diff --git a/README.md b/README.md index f3fe5e3bf0..378d77196a 100644 --- a/README.md +++ b/README.md @@ -14,7 +14,7 @@ Java and Spring Tutorials ================ This project is **a collection of small and focused tutorials** - each covering a single and well defined area of development in the Java ecosystem. -A strong focus of these is, of course, the Spring Framework - Spring, Spring Boot and Spring Securiyt. +A strong focus of these is, of course, the Spring Framework - Spring, Spring Boot and Spring Security. In additional to Spring, the following technologies are in focus: `core Java`, `Jackson`, `HttpClient`, `Guava`. diff --git a/akka-http/README.md b/akka-http/README.md new file mode 100644 index 0000000000..3831b5079f --- /dev/null +++ b/akka-http/README.md @@ -0,0 +1,3 @@ +## Relevant articles: + +- [Introduction to Akka HTTP](https://www.baeldung.com/akka-http) diff --git a/algorithms-miscellaneous-1/README.md b/algorithms-miscellaneous-1/README.md index a725bbd141..6f18396005 100644 --- a/algorithms-miscellaneous-1/README.md +++ b/algorithms-miscellaneous-1/README.md @@ -12,4 +12,6 @@ - [Check If a String Contains All The Letters of The Alphabet](https://www.baeldung.com/java-string-contains-all-letters) - [Find the Middle Element of a Linked List](http://www.baeldung.com/java-linked-list-middle-element) - [Calculate Factorial in Java](https://www.baeldung.com/java-calculate-factorial) -- [Find Substrings That Are Palindromes in Java](https://www.baeldung.com/java-palindrome-substrings) \ No newline at end of file +- [Find Substrings That Are Palindromes in Java](https://www.baeldung.com/java-palindrome-substrings) +- [Find the Longest Substring without Repeating Characters](https://www.baeldung.com/java-longest-substring-without-repeated-characters) +- [Java Two Pointer Technique](https://www.baeldung.com/java-two-pointer-technique) diff --git a/algorithms-miscellaneous-1/src/main/java/com/baeldung/algorithms/permutation/Permutation.java b/algorithms-miscellaneous-1/src/main/java/com/baeldung/algorithms/permutation/Permutation.java new file mode 100644 index 0000000000..7fedd78ffb --- /dev/null +++ b/algorithms-miscellaneous-1/src/main/java/com/baeldung/algorithms/permutation/Permutation.java @@ -0,0 +1,123 @@ +package com.baeldung.algorithms.permutation; + +import java.util.Arrays; +import java.util.Collections; + +public class Permutation { + + public static void printAllRecursive(T[] elements, char delimiter) { + printAllRecursive(elements.length, elements, delimiter); + } + + public static void printAllRecursive(int n, T[] elements, char delimiter) { + + if(n == 1) { + printArray(elements, delimiter); + } else { + for(int i = 0; i < n-1; i++) { + printAllRecursive(n - 1, elements, delimiter); + if(n % 2 == 0) { + swap(elements, i, n-1); + } else { + swap(elements, 0, n-1); + } + } + printAllRecursive(n - 1, elements, delimiter); + } + } + + public static void printAllIterative(int n, T[] elements, char delimiter) { + + int[] indexes = new int[n]; + for (int i = 0; i < n; i++) { + indexes[i] = 0; + } + + printArray(elements, delimiter); + + int i = 0; + while (i < n) { + if (indexes[i] < i) { + swap(elements, i % 2 == 0 ? 0: indexes[i], i); + printArray(elements, delimiter); + indexes[i]++; + i = 0; + } + else { + indexes[i] = 0; + i++; + } + } + } + + public static > void printAllOrdered(T[] elements, char delimiter) { + + Arrays.sort(elements); + boolean hasNext = true; + + while(hasNext) { + printArray(elements, delimiter); + int k = 0, l = 0; + hasNext = false; + for (int i = elements.length - 1; i > 0; i--) { + if (elements[i].compareTo(elements[i - 1]) > 0) { + k = i - 1; + hasNext = true; + break; + } + } + + for (int i = elements.length - 1; i > k; i--) { + if (elements[i].compareTo(elements[k]) > 0) { + l = i; + break; + } + } + + swap(elements, k, l); + Collections.reverse(Arrays.asList(elements).subList(k + 1, elements.length)); + } + } + + public static void printRandom(T[] elements, char delimiter) { + + Collections.shuffle(Arrays.asList(elements)); + printArray(elements, delimiter); + } + + private static void swap(T[] elements, int a, int b) { + + T tmp = elements[a]; + elements[a] = elements[b]; + elements[b] = tmp; + } + + private static void printArray(T[] elements, char delimiter) { + + String delimiterSpace = delimiter + " "; + for(int i = 0; i < elements.length; i++) { + System.out.print(elements[i] + delimiterSpace); + } + System.out.print('\n'); + } + + public static void main(String[] argv) { + + Integer[] elements = {1,2,3,4}; + + System.out.println("Rec:"); + printAllRecursive(elements, ';'); + + System.out.println("Iter:"); + printAllIterative(elements.length, elements, ';'); + + System.out.println("Orderes:"); + printAllOrdered(elements, ';'); + + System.out.println("Random:"); + printRandom(elements, ';'); + + System.out.println("Random:"); + printRandom(elements, ';'); + } +} diff --git a/algorithms-miscellaneous-1/src/main/java/com/baeldung/algorithms/twopointertechnique/LinkedListFindMiddle.java b/algorithms-miscellaneous-1/src/main/java/com/baeldung/algorithms/twopointertechnique/LinkedListFindMiddle.java new file mode 100644 index 0000000000..a7031f4fba --- /dev/null +++ b/algorithms-miscellaneous-1/src/main/java/com/baeldung/algorithms/twopointertechnique/LinkedListFindMiddle.java @@ -0,0 +1,16 @@ +package com.baeldung.algorithms.twopointertechnique; + +public class LinkedListFindMiddle { + + public T findMiddle(MyNode head) { + MyNode slowPointer = head; + MyNode fastPointer = head; + + while (fastPointer.next != null && fastPointer.next.next != null) { + fastPointer = fastPointer.next.next; + slowPointer = slowPointer.next; + } + return slowPointer.data; + } + +} diff --git a/algorithms-miscellaneous-1/src/main/java/com/baeldung/algorithms/twopointertechnique/MyNode.java b/algorithms-miscellaneous-1/src/main/java/com/baeldung/algorithms/twopointertechnique/MyNode.java new file mode 100644 index 0000000000..7d93f03ef9 --- /dev/null +++ b/algorithms-miscellaneous-1/src/main/java/com/baeldung/algorithms/twopointertechnique/MyNode.java @@ -0,0 +1,20 @@ +package com.baeldung.algorithms.twopointertechnique; + +public class MyNode { + MyNode next; + E data; + + public MyNode(E value) { + data = value; + next = null; + } + + public MyNode(E value, MyNode n) { + data = value; + next = n; + } + + public void setNext(MyNode n) { + next = n; + } +} diff --git a/algorithms-miscellaneous-1/src/main/java/com/baeldung/algorithms/twopointertechnique/RotateArray.java b/algorithms-miscellaneous-1/src/main/java/com/baeldung/algorithms/twopointertechnique/RotateArray.java new file mode 100644 index 0000000000..b4e3698c01 --- /dev/null +++ b/algorithms-miscellaneous-1/src/main/java/com/baeldung/algorithms/twopointertechnique/RotateArray.java @@ -0,0 +1,22 @@ +package com.baeldung.algorithms.twopointertechnique; + +public class RotateArray { + + public void rotate(int[] input, int step) { + step %= input.length; + reverse(input, 0, input.length - 1); + reverse(input, 0, step - 1); + reverse(input, step, input.length - 1); + } + + private void reverse(int[] input, int start, int end) { + while (start < end) { + int temp = input[start]; + input[start] = input[end]; + input[end] = temp; + start++; + end--; + } + } + +} diff --git a/algorithms-miscellaneous-1/src/main/java/com/baeldung/algorithms/twopointertechnique/TwoSum.java b/algorithms-miscellaneous-1/src/main/java/com/baeldung/algorithms/twopointertechnique/TwoSum.java new file mode 100644 index 0000000000..14eceaa1bd --- /dev/null +++ b/algorithms-miscellaneous-1/src/main/java/com/baeldung/algorithms/twopointertechnique/TwoSum.java @@ -0,0 +1,38 @@ +package com.baeldung.algorithms.twopointertechnique; + +public class TwoSum { + + public boolean twoSum(int[] input, int targetValue) { + + int pointerOne = 0; + int pointerTwo = input.length - 1; + + while (pointerOne < pointerTwo) { + int sum = input[pointerOne] + input[pointerTwo]; + + if (sum == targetValue) { + return true; + } else if (sum < targetValue) { + pointerOne++; + } else { + pointerTwo--; + } + } + + return false; + } + + public boolean twoSumSlow(int[] input, int targetValue) { + + for (int i = 0; i < input.length; i++) { + for (int j = 1; j < input.length; j++) { + if (input[i] + input[j] == targetValue) { + return true; + } + } + } + + return false; + } + +} diff --git a/algorithms-miscellaneous-1/src/test/java/com/baeldung/algorithms/twopointertechnique/LinkedListFindMiddleUnitTest.java b/algorithms-miscellaneous-1/src/test/java/com/baeldung/algorithms/twopointertechnique/LinkedListFindMiddleUnitTest.java new file mode 100644 index 0000000000..422a53fa3e --- /dev/null +++ b/algorithms-miscellaneous-1/src/test/java/com/baeldung/algorithms/twopointertechnique/LinkedListFindMiddleUnitTest.java @@ -0,0 +1,37 @@ +package com.baeldung.algorithms.twopointertechnique; + +import static org.assertj.core.api.Assertions.assertThat; + +import org.junit.Test; + +public class LinkedListFindMiddleUnitTest { + + LinkedListFindMiddle linkedListFindMiddle = new LinkedListFindMiddle(); + + @Test + public void givenLinkedListOfMyNodes_whenLinkedListFindMiddle_thenCorrect() { + + MyNode head = createNodesList(8); + + assertThat(linkedListFindMiddle.findMiddle(head)).isEqualTo("4"); + + head = createNodesList(9); + + assertThat(linkedListFindMiddle.findMiddle(head)).isEqualTo("5"); + } + + private static MyNode createNodesList(int n) { + + MyNode head = new MyNode("1"); + MyNode current = head; + + for (int i = 2; i <= n; i++) { + MyNode newNode = new MyNode(String.valueOf(i)); + current.setNext(newNode); + current = newNode; + } + + return head; + } + +} diff --git a/algorithms-miscellaneous-1/src/test/java/com/baeldung/algorithms/twopointertechnique/RotateArrayUnitTest.java b/algorithms-miscellaneous-1/src/test/java/com/baeldung/algorithms/twopointertechnique/RotateArrayUnitTest.java new file mode 100644 index 0000000000..da227ae751 --- /dev/null +++ b/algorithms-miscellaneous-1/src/test/java/com/baeldung/algorithms/twopointertechnique/RotateArrayUnitTest.java @@ -0,0 +1,26 @@ +package com.baeldung.algorithms.twopointertechnique; + +import static org.assertj.core.api.Assertions.assertThat; + +import org.junit.Test; + +public class RotateArrayUnitTest { + + private RotateArray rotateArray = new RotateArray(); + + private int[] inputArray; + + private int step; + + @Test + public void givenAnArrayOfIntegers_whenRotateKsteps_thenCorrect() { + + inputArray = new int[] { 1, 2, 3, 4, 5, 6, 7 }; + step = 4; + + rotateArray.rotate(inputArray, step); + + assertThat(inputArray).containsExactly(new int[] { 4, 5, 6, 7, 1, 2, 3 }); + } + +} diff --git a/algorithms-miscellaneous-1/src/test/java/com/baeldung/algorithms/twopointertechnique/TwoSumUnitTest.java b/algorithms-miscellaneous-1/src/test/java/com/baeldung/algorithms/twopointertechnique/TwoSumUnitTest.java new file mode 100644 index 0000000000..aa76f8e1cf --- /dev/null +++ b/algorithms-miscellaneous-1/src/test/java/com/baeldung/algorithms/twopointertechnique/TwoSumUnitTest.java @@ -0,0 +1,56 @@ +package com.baeldung.algorithms.twopointertechnique; + +import static org.junit.Assert.assertFalse; +import static org.junit.Assert.assertTrue; + +import org.junit.Test; + +public class TwoSumUnitTest { + + private TwoSum twoSum = new TwoSum(); + + private int[] sortedArray; + + private int targetValue; + + @Test + public void givenASortedArrayOfIntegers_whenTwoSumSlow_thenPairExists() { + + sortedArray = new int[] { 0, 1, 2, 3, 4, 5, 5, 6, 7, 8, 9, 9 }; + + targetValue = 12; + + assertTrue(twoSum.twoSumSlow(sortedArray, targetValue)); + } + + @Test + public void givenASortedArrayOfIntegers_whenTwoSumSlow_thenPairDoesNotExists() { + + sortedArray = new int[] { 0, 1, 2, 3, 4, 5, 5, 6, 7, 8, 9, 9 }; + + targetValue = 20; + + assertFalse(twoSum.twoSumSlow(sortedArray, targetValue)); + } + + @Test + public void givenASortedArrayOfIntegers_whenTwoSum_thenPairExists() { + + sortedArray = new int[] { 0, 1, 2, 3, 4, 5, 5, 6, 7, 8, 9, 9 }; + + targetValue = 12; + + assertTrue(twoSum.twoSum(sortedArray, targetValue)); + } + + @Test + public void givenASortedArrayOfIntegers_whenTwoSum_thenPairDoesNotExists() { + + sortedArray = new int[] { 0, 1, 2, 3, 4, 5, 5, 6, 7, 8, 9, 9 }; + + targetValue = 20; + + assertFalse(twoSum.twoSum(sortedArray, targetValue)); + } + +} diff --git a/apache-spark/pom.xml b/apache-spark/pom.xml index 290b63a14d..b05b97198d 100644 --- a/apache-spark/pom.xml +++ b/apache-spark/pom.xml @@ -15,16 +15,76 @@ - org.apache.spark - spark-core_2.10 + spark-core_2.11 ${org.apache.spark.spark-core.version} + provided + + org.apache.spark + spark-sql_2.11 + ${org.apache.spark.spark-sql.version} + provided + + + org.apache.spark + spark-streaming_2.11 + ${org.apache.spark.spark-streaming.version} + provided + + + org.apache.spark + spark-streaming-kafka-0-10_2.11 + ${org.apache.spark.spark-streaming-kafka.version} + + + com.datastax.spark + spark-cassandra-connector_2.11 + ${com.datastax.spark.spark-cassandra-connector.version} + + + com.datastax.spark + spark-cassandra-connector-java_2.11 + ${com.datastax.spark.spark-cassandra-connector-java.version} + - + + + + org.apache.maven.plugins + maven-compiler-plugin + 3.2 + + 1.8 + 1.8 + + + + maven-assembly-plugin + + + package + + single + + + + + + jar-with-dependencies + + + + + - 2.2.0 + 2.3.0 + 2.3.0 + 2.3.0 + 2.3.0 + 2.3.0 + 1.5.2 diff --git a/apache-spark/src/main/java/com/baeldung/data/pipeline/Word.java b/apache-spark/src/main/java/com/baeldung/data/pipeline/Word.java new file mode 100644 index 0000000000..b0caa468b1 --- /dev/null +++ b/apache-spark/src/main/java/com/baeldung/data/pipeline/Word.java @@ -0,0 +1,25 @@ +package com.baeldung.data.pipeline; + +import java.io.Serializable; + +public class Word implements Serializable { + private static final long serialVersionUID = 1L; + private String word; + private int count; + Word(String word, int count) { + this.word = word; + this.count = count; + } + public String getWord() { + return word; + } + public void setWord(String word) { + this.word = word; + } + public int getCount() { + return count; + } + public void setCount(int count) { + this.count = count; + } +} \ No newline at end of file diff --git a/apache-spark/src/main/java/com/baeldung/data/pipeline/WordCountingApp.java b/apache-spark/src/main/java/com/baeldung/data/pipeline/WordCountingApp.java new file mode 100644 index 0000000000..db2a73b411 --- /dev/null +++ b/apache-spark/src/main/java/com/baeldung/data/pipeline/WordCountingApp.java @@ -0,0 +1,80 @@ +package com.baeldung.data.pipeline; + +import static com.datastax.spark.connector.japi.CassandraJavaUtil.javaFunctions; +import static com.datastax.spark.connector.japi.CassandraJavaUtil.mapToRow; + +import java.util.Arrays; +import java.util.Collection; +import java.util.HashMap; +import java.util.List; +import java.util.Map; + +import org.apache.kafka.clients.consumer.ConsumerRecord; +import org.apache.kafka.common.serialization.StringDeserializer; +import org.apache.log4j.Level; +import org.apache.log4j.Logger; +import org.apache.spark.SparkConf; +import org.apache.spark.api.java.JavaRDD; +import org.apache.spark.streaming.Durations; +import org.apache.spark.streaming.api.java.JavaDStream; +import org.apache.spark.streaming.api.java.JavaInputDStream; +import org.apache.spark.streaming.api.java.JavaPairDStream; +import org.apache.spark.streaming.api.java.JavaStreamingContext; +import org.apache.spark.streaming.kafka010.ConsumerStrategies; +import org.apache.spark.streaming.kafka010.KafkaUtils; +import org.apache.spark.streaming.kafka010.LocationStrategies; + +import scala.Tuple2; + +public class WordCountingApp { + + public static void main(String[] args) throws InterruptedException { + Logger.getLogger("org") + .setLevel(Level.OFF); + Logger.getLogger("akka") + .setLevel(Level.OFF); + + Map kafkaParams = new HashMap<>(); + kafkaParams.put("bootstrap.servers", "localhost:9092"); + kafkaParams.put("key.deserializer", StringDeserializer.class); + kafkaParams.put("value.deserializer", StringDeserializer.class); + kafkaParams.put("group.id", "use_a_separate_group_id_for_each_stream"); + kafkaParams.put("auto.offset.reset", "latest"); + kafkaParams.put("enable.auto.commit", false); + + Collection topics = Arrays.asList("messages"); + + SparkConf sparkConf = new SparkConf(); + sparkConf.setMaster("local[2]"); + sparkConf.setAppName("WordCountingApp"); + sparkConf.set("spark.cassandra.connection.host", "127.0.0.1"); + + JavaStreamingContext streamingContext = new JavaStreamingContext(sparkConf, Durations.seconds(1)); + + JavaInputDStream> messages = KafkaUtils.createDirectStream(streamingContext, LocationStrategies.PreferConsistent(), ConsumerStrategies. Subscribe(topics, kafkaParams)); + + JavaPairDStream results = messages.mapToPair(record -> new Tuple2<>(record.key(), record.value())); + + JavaDStream lines = results.map(tuple2 -> tuple2._2()); + + JavaDStream words = lines.flatMap(x -> Arrays.asList(x.split("\\s+")) + .iterator()); + + JavaPairDStream wordCounts = words.mapToPair(s -> new Tuple2<>(s, 1)) + .reduceByKey((i1, i2) -> i1 + i2); + + wordCounts.foreachRDD(javaRdd -> { + Map wordCountMap = javaRdd.collectAsMap(); + for (String key : wordCountMap.keySet()) { + List wordList = Arrays.asList(new Word(key, wordCountMap.get(key))); + JavaRDD rdd = streamingContext.sparkContext() + .parallelize(wordList); + javaFunctions(rdd).writerBuilder("vocabulary", "words", mapToRow(Word.class)) + .saveToCassandra(); + } + }); + + streamingContext.start(); + streamingContext.awaitTermination(); + } +} \ No newline at end of file diff --git a/apache-spark/src/main/java/com/baeldung/data/pipeline/WordCountingAppWithCheckpoint.java b/apache-spark/src/main/java/com/baeldung/data/pipeline/WordCountingAppWithCheckpoint.java new file mode 100644 index 0000000000..efbe5f3851 --- /dev/null +++ b/apache-spark/src/main/java/com/baeldung/data/pipeline/WordCountingAppWithCheckpoint.java @@ -0,0 +1,97 @@ +package com.baeldung.data.pipeline; + +import static com.datastax.spark.connector.japi.CassandraJavaUtil.javaFunctions; +import static com.datastax.spark.connector.japi.CassandraJavaUtil.mapToRow; + +import java.util.Arrays; +import java.util.Collection; +import java.util.HashMap; +import java.util.List; +import java.util.Map; + +import org.apache.kafka.clients.consumer.ConsumerRecord; +import org.apache.kafka.common.serialization.StringDeserializer; +import org.apache.log4j.Level; +import org.apache.log4j.Logger; +import org.apache.spark.SparkConf; +import org.apache.spark.api.java.JavaRDD; +import org.apache.spark.api.java.JavaSparkContext; +import org.apache.spark.api.java.function.Function2; +import org.apache.spark.streaming.Durations; +import org.apache.spark.streaming.StateSpec; +import org.apache.spark.streaming.api.java.JavaDStream; +import org.apache.spark.streaming.api.java.JavaInputDStream; +import org.apache.spark.streaming.api.java.JavaMapWithStateDStream; +import org.apache.spark.streaming.api.java.JavaPairDStream; +import org.apache.spark.streaming.api.java.JavaStreamingContext; +import org.apache.spark.streaming.kafka010.ConsumerStrategies; +import org.apache.spark.streaming.kafka010.KafkaUtils; +import org.apache.spark.streaming.kafka010.LocationStrategies; + +import scala.Tuple2; + +public class WordCountingAppWithCheckpoint { + + public static JavaSparkContext sparkContext; + + public static void main(String[] args) throws InterruptedException { + + Logger.getLogger("org") + .setLevel(Level.OFF); + Logger.getLogger("akka") + .setLevel(Level.OFF); + + Map kafkaParams = new HashMap<>(); + kafkaParams.put("bootstrap.servers", "localhost:9092"); + kafkaParams.put("key.deserializer", StringDeserializer.class); + kafkaParams.put("value.deserializer", StringDeserializer.class); + kafkaParams.put("group.id", "use_a_separate_group_id_for_each_stream"); + kafkaParams.put("auto.offset.reset", "latest"); + kafkaParams.put("enable.auto.commit", false); + + Collection topics = Arrays.asList("messages"); + + SparkConf sparkConf = new SparkConf(); + sparkConf.setMaster("local[2]"); + sparkConf.setAppName("WordCountingAppWithCheckpoint"); + sparkConf.set("spark.cassandra.connection.host", "127.0.0.1"); + + JavaStreamingContext streamingContext = new JavaStreamingContext(sparkConf, Durations.seconds(1)); + + sparkContext = streamingContext.sparkContext(); + + streamingContext.checkpoint("./.checkpoint"); + + JavaInputDStream> messages = KafkaUtils.createDirectStream(streamingContext, LocationStrategies.PreferConsistent(), ConsumerStrategies. Subscribe(topics, kafkaParams)); + + JavaPairDStream results = messages.mapToPair(record -> new Tuple2<>(record.key(), record.value())); + + JavaDStream lines = results.map(tuple2 -> tuple2._2()); + + JavaDStream words = lines.flatMap(x -> Arrays.asList(x.split("\\s+")) + .iterator()); + + JavaPairDStream wordCounts = words.mapToPair(s -> new Tuple2<>(s, 1)) + .reduceByKey((Function2) (i1, i2) -> i1 + i2); + + JavaMapWithStateDStream> cumulativeWordCounts = wordCounts.mapWithState(StateSpec.function((word, one, state) -> { + int sum = one.orElse(0) + (state.exists() ? state.get() : 0); + Tuple2 output = new Tuple2<>(word, sum); + state.update(sum); + return output; + })); + + cumulativeWordCounts.foreachRDD(javaRdd -> { + List> wordCountList = javaRdd.collect(); + for (Tuple2 tuple : wordCountList) { + List wordList = Arrays.asList(new Word(tuple._1, tuple._2)); + JavaRDD rdd = sparkContext.parallelize(wordList); + javaFunctions(rdd).writerBuilder("vocabulary", "words", mapToRow(Word.class)) + .saveToCassandra(); + } + }); + + streamingContext.start(); + streamingContext.awaitTermination(); + } +} \ No newline at end of file diff --git a/axon/pom.xml b/axon/pom.xml index c643ea9e57..598dc820e5 100644 --- a/axon/pom.xml +++ b/axon/pom.xml @@ -4,29 +4,61 @@ 4.0.0 axon axon - + Basic Axon Framework with Spring Boot configuration tutorial + - parent-modules com.baeldung - 1.0.0-SNAPSHOT + parent-boot-2 + 0.0.1-SNAPSHOT + ../parent-boot-2 + + org.axonframework + axon-spring-boot-starter + ${axon.version} + + + org.axonframework + axon-server-connector + + + + org.axonframework axon-test ${axon.version} test + - org.axonframework - axon-core - ${axon.version} + org.springframework.boot + spring-boot-autoconfigure + 2.1.1.RELEASE + compile + + + + org.springframework.boot + spring-boot-starter-web + + + + org.springframework.boot + spring-boot-starter-data-jpa + + + + com.h2database + h2 + runtime - 3.0.2 + 4.0.3 \ No newline at end of file diff --git a/axon/src/main/java/com/baeldung/axon/MessagesRunner.java b/axon/src/main/java/com/baeldung/axon/MessagesRunner.java deleted file mode 100644 index 77b50d09bd..0000000000 --- a/axon/src/main/java/com/baeldung/axon/MessagesRunner.java +++ /dev/null @@ -1,54 +0,0 @@ -package com.baeldung.axon; - -import com.baeldung.axon.aggregates.MessagesAggregate; -import com.baeldung.axon.commands.CreateMessageCommand; -import com.baeldung.axon.commands.MarkReadMessageCommand; -import com.baeldung.axon.eventhandlers.MessagesEventHandler; -import org.axonframework.commandhandling.AggregateAnnotationCommandHandler; -import org.axonframework.commandhandling.CommandBus; -import org.axonframework.commandhandling.SimpleCommandBus; -import org.axonframework.commandhandling.gateway.CommandGateway; -import org.axonframework.commandhandling.gateway.DefaultCommandGateway; -import org.axonframework.eventhandling.AnnotationEventListenerAdapter; -import org.axonframework.eventsourcing.EventSourcingRepository; -import org.axonframework.eventsourcing.eventstore.EmbeddedEventStore; -import org.axonframework.eventsourcing.eventstore.EventStore; -import org.axonframework.eventsourcing.eventstore.inmemory.InMemoryEventStorageEngine; - -import java.util.UUID; - -public class MessagesRunner { - - public static void main(String[] args) { - CommandBus commandBus = new SimpleCommandBus(); - - CommandGateway commandGateway = new DefaultCommandGateway(commandBus); - - EventStore eventStore = new EmbeddedEventStore(new InMemoryEventStorageEngine()); - - EventSourcingRepository repository = - new EventSourcingRepository<>(MessagesAggregate.class, eventStore); - - - AggregateAnnotationCommandHandler messagesAggregateAggregateAnnotationCommandHandler = - new AggregateAnnotationCommandHandler(MessagesAggregate.class, repository); - messagesAggregateAggregateAnnotationCommandHandler.subscribe(commandBus); - - final AnnotationEventListenerAdapter annotationEventListenerAdapter = - new AnnotationEventListenerAdapter(new MessagesEventHandler()); - eventStore.subscribe(eventMessages -> eventMessages.forEach(e -> { - try { - annotationEventListenerAdapter.handle(e); - } catch (Exception e1) { - throw new RuntimeException(e1); - - } - } - - )); - - final String itemId = UUID.randomUUID().toString(); - commandGateway.send(new CreateMessageCommand(itemId, "Hello, how is your day? :-)")); - commandGateway.send(new MarkReadMessageCommand(itemId)); - } -} \ No newline at end of file diff --git a/axon/src/main/java/com/baeldung/axon/OrderApplication.java b/axon/src/main/java/com/baeldung/axon/OrderApplication.java new file mode 100644 index 0000000000..8f507e141c --- /dev/null +++ b/axon/src/main/java/com/baeldung/axon/OrderApplication.java @@ -0,0 +1,13 @@ +package com.baeldung.axon; + +import org.springframework.boot.SpringApplication; +import org.springframework.boot.autoconfigure.SpringBootApplication; + +@SpringBootApplication +public class OrderApplication { + + public static void main(String[] args) { + SpringApplication.run(OrderApplication.class, args); + } + +} \ No newline at end of file diff --git a/axon/src/main/java/com/baeldung/axon/aggregates/MessagesAggregate.java b/axon/src/main/java/com/baeldung/axon/aggregates/MessagesAggregate.java deleted file mode 100644 index e762604b74..0000000000 --- a/axon/src/main/java/com/baeldung/axon/aggregates/MessagesAggregate.java +++ /dev/null @@ -1,36 +0,0 @@ -package com.baeldung.axon.aggregates; - -import com.baeldung.axon.commands.CreateMessageCommand; -import com.baeldung.axon.commands.MarkReadMessageCommand; -import com.baeldung.axon.events.MessageCreatedEvent; -import com.baeldung.axon.events.MessageReadEvent; -import org.axonframework.commandhandling.CommandHandler; -import org.axonframework.commandhandling.model.AggregateIdentifier; -import org.axonframework.eventhandling.EventHandler; - -import static org.axonframework.commandhandling.model.AggregateLifecycle.apply; - - -public class MessagesAggregate { - - @AggregateIdentifier - private String id; - - public MessagesAggregate() { - } - - @CommandHandler - public MessagesAggregate(CreateMessageCommand command) { - apply(new MessageCreatedEvent(command.getId(), command.getText())); - } - - @EventHandler - public void on(MessageCreatedEvent event) { - this.id = event.getId(); - } - - @CommandHandler - public void markRead(MarkReadMessageCommand command) { - apply(new MessageReadEvent(id)); - } -} \ No newline at end of file diff --git a/axon/src/main/java/com/baeldung/axon/commandmodel/OrderAggregate.java b/axon/src/main/java/com/baeldung/axon/commandmodel/OrderAggregate.java new file mode 100644 index 0000000000..b37b2fdd66 --- /dev/null +++ b/axon/src/main/java/com/baeldung/axon/commandmodel/OrderAggregate.java @@ -0,0 +1,58 @@ +package com.baeldung.axon.commandmodel; + +import static org.axonframework.modelling.command.AggregateLifecycle.apply; + +import org.axonframework.commandhandling.CommandHandler; +import org.axonframework.eventsourcing.EventSourcingHandler; +import org.axonframework.modelling.command.AggregateIdentifier; +import org.axonframework.spring.stereotype.Aggregate; + +import com.baeldung.axon.coreapi.commands.ConfirmOrderCommand; +import com.baeldung.axon.coreapi.commands.PlaceOrderCommand; +import com.baeldung.axon.coreapi.commands.ShipOrderCommand; +import com.baeldung.axon.coreapi.events.OrderConfirmedEvent; +import com.baeldung.axon.coreapi.events.OrderPlacedEvent; +import com.baeldung.axon.coreapi.events.OrderShippedEvent; + +@Aggregate +public class OrderAggregate { + + @AggregateIdentifier + private String orderId; + private boolean orderConfirmed; + + @CommandHandler + public OrderAggregate(PlaceOrderCommand command) { + apply(new OrderPlacedEvent(command.getOrderId(), command.getProduct())); + } + + @CommandHandler + public void handle(ConfirmOrderCommand command) { + apply(new OrderConfirmedEvent(orderId)); + } + + @CommandHandler + public void handle(ShipOrderCommand command) { + if (!orderConfirmed) { + throw new IllegalStateException("Cannot ship an order which has not been confirmed yet."); + } + + apply(new OrderShippedEvent(orderId)); + } + + @EventSourcingHandler + public void on(OrderPlacedEvent event) { + this.orderId = event.getOrderId(); + orderConfirmed = false; + } + + @EventSourcingHandler + public void on(OrderConfirmedEvent event) { + orderConfirmed = true; + } + + protected OrderAggregate() { + // Required by Axon to build a default Aggregate prior to Event Sourcing + } + +} \ No newline at end of file diff --git a/axon/src/main/java/com/baeldung/axon/commands/CreateMessageCommand.java b/axon/src/main/java/com/baeldung/axon/commands/CreateMessageCommand.java deleted file mode 100644 index d0651bf12e..0000000000 --- a/axon/src/main/java/com/baeldung/axon/commands/CreateMessageCommand.java +++ /dev/null @@ -1,24 +0,0 @@ -package com.baeldung.axon.commands; - - -import org.axonframework.commandhandling.TargetAggregateIdentifier; - -public class CreateMessageCommand { - - @TargetAggregateIdentifier - private final String id; - private final String text; - - public CreateMessageCommand(String id, String text) { - this.id = id; - this.text = text; - } - - public String getId() { - return id; - } - - public String getText() { - return text; - } -} \ No newline at end of file diff --git a/axon/src/main/java/com/baeldung/axon/commands/MarkReadMessageCommand.java b/axon/src/main/java/com/baeldung/axon/commands/MarkReadMessageCommand.java deleted file mode 100644 index e66582d9ec..0000000000 --- a/axon/src/main/java/com/baeldung/axon/commands/MarkReadMessageCommand.java +++ /dev/null @@ -1,18 +0,0 @@ -package com.baeldung.axon.commands; - - -import org.axonframework.commandhandling.TargetAggregateIdentifier; - -public class MarkReadMessageCommand { - - @TargetAggregateIdentifier - private final String id; - - public MarkReadMessageCommand(String id) { - this.id = id; - } - - public String getId() { - return id; - } -} \ No newline at end of file diff --git a/axon/src/main/java/com/baeldung/axon/coreapi/commands/ConfirmOrderCommand.java b/axon/src/main/java/com/baeldung/axon/coreapi/commands/ConfirmOrderCommand.java new file mode 100644 index 0000000000..244b69f3b7 --- /dev/null +++ b/axon/src/main/java/com/baeldung/axon/coreapi/commands/ConfirmOrderCommand.java @@ -0,0 +1,43 @@ +package com.baeldung.axon.coreapi.commands; + +import org.axonframework.modelling.command.TargetAggregateIdentifier; + +import java.util.Objects; + +public class ConfirmOrderCommand { + + @TargetAggregateIdentifier + private final String orderId; + + public ConfirmOrderCommand(String orderId) { + this.orderId = orderId; + } + + public String getOrderId() { + return orderId; + } + + @Override + public int hashCode() { + return Objects.hash(orderId); + } + + @Override + public boolean equals(Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + final ConfirmOrderCommand other = (ConfirmOrderCommand) obj; + return Objects.equals(this.orderId, other.orderId); + } + + @Override + public String toString() { + return "ConfirmOrderCommand{" + + "orderId='" + orderId + '\'' + + '}'; + } +} diff --git a/axon/src/main/java/com/baeldung/axon/coreapi/commands/PlaceOrderCommand.java b/axon/src/main/java/com/baeldung/axon/coreapi/commands/PlaceOrderCommand.java new file mode 100644 index 0000000000..c70d503050 --- /dev/null +++ b/axon/src/main/java/com/baeldung/axon/coreapi/commands/PlaceOrderCommand.java @@ -0,0 +1,51 @@ +package com.baeldung.axon.coreapi.commands; + +import java.util.Objects; + +import org.axonframework.modelling.command.TargetAggregateIdentifier; + +public class PlaceOrderCommand { + + @TargetAggregateIdentifier + private final String orderId; + private final String product; + + public PlaceOrderCommand(String orderId, String product) { + this.orderId = orderId; + this.product = product; + } + + public String getOrderId() { + return orderId; + } + + public String getProduct() { + return product; + } + + @Override + public int hashCode() { + return Objects.hash(orderId, product); + } + + @Override + public boolean equals(Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + final PlaceOrderCommand other = (PlaceOrderCommand) obj; + return Objects.equals(this.orderId, other.orderId) + && Objects.equals(this.product, other.product); + } + + @Override + public String toString() { + return "PlaceOrderCommand{" + + "orderId='" + orderId + '\'' + + ", product='" + product + '\'' + + '}'; + } +} \ No newline at end of file diff --git a/axon/src/main/java/com/baeldung/axon/coreapi/commands/ShipOrderCommand.java b/axon/src/main/java/com/baeldung/axon/coreapi/commands/ShipOrderCommand.java new file mode 100644 index 0000000000..7312bc1fdb --- /dev/null +++ b/axon/src/main/java/com/baeldung/axon/coreapi/commands/ShipOrderCommand.java @@ -0,0 +1,43 @@ +package com.baeldung.axon.coreapi.commands; + +import java.util.Objects; + +import org.axonframework.modelling.command.TargetAggregateIdentifier; + +public class ShipOrderCommand { + + @TargetAggregateIdentifier + private final String orderId; + + public ShipOrderCommand(String orderId) { + this.orderId = orderId; + } + + public String getOrderId() { + return orderId; + } + + @Override + public int hashCode() { + return Objects.hash(orderId); + } + + @Override + public boolean equals(Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + final ShipOrderCommand other = (ShipOrderCommand) obj; + return Objects.equals(this.orderId, other.orderId); + } + + @Override + public String toString() { + return "ShipOrderCommand{" + + "orderId='" + orderId + '\'' + + '}'; + } +} \ No newline at end of file diff --git a/axon/src/main/java/com/baeldung/axon/coreapi/events/OrderConfirmedEvent.java b/axon/src/main/java/com/baeldung/axon/coreapi/events/OrderConfirmedEvent.java new file mode 100644 index 0000000000..d2b7d58435 --- /dev/null +++ b/axon/src/main/java/com/baeldung/axon/coreapi/events/OrderConfirmedEvent.java @@ -0,0 +1,40 @@ +package com.baeldung.axon.coreapi.events; + +import java.util.Objects; + +public class OrderConfirmedEvent { + + private final String orderId; + + public OrderConfirmedEvent(String orderId) { + this.orderId = orderId; + } + + public String getOrderId() { + return orderId; + } + + @Override + public int hashCode() { + return Objects.hash(orderId); + } + + @Override + public boolean equals(Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + final OrderConfirmedEvent other = (OrderConfirmedEvent) obj; + return Objects.equals(this.orderId, other.orderId); + } + + @Override + public String toString() { + return "OrderConfirmedEvent{" + + "orderId='" + orderId + '\'' + + '}'; + } +} diff --git a/axon/src/main/java/com/baeldung/axon/coreapi/events/OrderPlacedEvent.java b/axon/src/main/java/com/baeldung/axon/coreapi/events/OrderPlacedEvent.java new file mode 100644 index 0000000000..06de4c5f9f --- /dev/null +++ b/axon/src/main/java/com/baeldung/axon/coreapi/events/OrderPlacedEvent.java @@ -0,0 +1,48 @@ +package com.baeldung.axon.coreapi.events; + +import java.util.Objects; + +public class OrderPlacedEvent { + + private final String orderId; + private final String product; + + public OrderPlacedEvent(String orderId, String product) { + this.orderId = orderId; + this.product = product; + } + + public String getOrderId() { + return orderId; + } + + public String getProduct() { + return product; + } + + @Override + public int hashCode() { + return Objects.hash(orderId, product); + } + + @Override + public boolean equals(Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + final OrderPlacedEvent other = (OrderPlacedEvent) obj; + return Objects.equals(this.orderId, other.orderId) + && Objects.equals(this.product, other.product); + } + + @Override + public String toString() { + return "OrderPlacedEvent{" + + "orderId='" + orderId + '\'' + + ", product='" + product + '\'' + + '}'; + } +} \ No newline at end of file diff --git a/axon/src/main/java/com/baeldung/axon/coreapi/events/OrderShippedEvent.java b/axon/src/main/java/com/baeldung/axon/coreapi/events/OrderShippedEvent.java new file mode 100644 index 0000000000..76aa684629 --- /dev/null +++ b/axon/src/main/java/com/baeldung/axon/coreapi/events/OrderShippedEvent.java @@ -0,0 +1,40 @@ +package com.baeldung.axon.coreapi.events; + +import java.util.Objects; + +public class OrderShippedEvent { + + private final String orderId; + + public OrderShippedEvent(String orderId) { + this.orderId = orderId; + } + + public String getOrderId() { + return orderId; + } + + @Override + public int hashCode() { + return Objects.hash(orderId); + } + + @Override + public boolean equals(Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + final OrderShippedEvent other = (OrderShippedEvent) obj; + return Objects.equals(this.orderId, other.orderId); + } + + @Override + public String toString() { + return "OrderShippedEvent{" + + "orderId='" + orderId + '\'' + + '}'; + } +} \ No newline at end of file diff --git a/axon/src/main/java/com/baeldung/axon/coreapi/queries/FindAllOrderedProductsQuery.java b/axon/src/main/java/com/baeldung/axon/coreapi/queries/FindAllOrderedProductsQuery.java new file mode 100644 index 0000000000..9d6ca2cfb2 --- /dev/null +++ b/axon/src/main/java/com/baeldung/axon/coreapi/queries/FindAllOrderedProductsQuery.java @@ -0,0 +1,5 @@ +package com.baeldung.axon.coreapi.queries; + +public class FindAllOrderedProductsQuery { + +} diff --git a/axon/src/main/java/com/baeldung/axon/coreapi/queries/OrderStatus.java b/axon/src/main/java/com/baeldung/axon/coreapi/queries/OrderStatus.java new file mode 100644 index 0000000000..d215c5fc32 --- /dev/null +++ b/axon/src/main/java/com/baeldung/axon/coreapi/queries/OrderStatus.java @@ -0,0 +1,7 @@ +package com.baeldung.axon.coreapi.queries; + +public enum OrderStatus { + + PLACED, CONFIRMED, SHIPPED + +} diff --git a/axon/src/main/java/com/baeldung/axon/coreapi/queries/OrderedProduct.java b/axon/src/main/java/com/baeldung/axon/coreapi/queries/OrderedProduct.java new file mode 100644 index 0000000000..d847bb2a98 --- /dev/null +++ b/axon/src/main/java/com/baeldung/axon/coreapi/queries/OrderedProduct.java @@ -0,0 +1,64 @@ +package com.baeldung.axon.coreapi.queries; + +import java.util.Objects; + +public class OrderedProduct { + + private final String orderId; + private final String product; + private OrderStatus orderStatus; + + public OrderedProduct(String orderId, String product) { + this.orderId = orderId; + this.product = product; + orderStatus = OrderStatus.PLACED; + } + + public String getOrderId() { + return orderId; + } + + public String getProduct() { + return product; + } + + public OrderStatus getOrderStatus() { + return orderStatus; + } + + public void setOrderConfirmed() { + this.orderStatus = OrderStatus.CONFIRMED; + } + + public void setOrderShipped() { + this.orderStatus = OrderStatus.SHIPPED; + } + + @Override + public int hashCode() { + return Objects.hash(orderId, product, orderStatus); + } + + @Override + public boolean equals(Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + final OrderedProduct other = (OrderedProduct) obj; + return Objects.equals(this.orderId, other.orderId) + && Objects.equals(this.product, other.product) + && Objects.equals(this.orderStatus, other.orderStatus); + } + + @Override + public String toString() { + return "OrderedProduct{" + + "orderId='" + orderId + '\'' + + ", product='" + product + '\'' + + ", orderStatus=" + orderStatus + + '}'; + } +} diff --git a/axon/src/main/java/com/baeldung/axon/eventhandlers/MessagesEventHandler.java b/axon/src/main/java/com/baeldung/axon/eventhandlers/MessagesEventHandler.java deleted file mode 100644 index 3e51e19c4e..0000000000 --- a/axon/src/main/java/com/baeldung/axon/eventhandlers/MessagesEventHandler.java +++ /dev/null @@ -1,19 +0,0 @@ -package com.baeldung.axon.eventhandlers; - -import com.baeldung.axon.events.MessageReadEvent; -import com.baeldung.axon.events.MessageCreatedEvent; -import org.axonframework.eventhandling.EventHandler; - - -public class MessagesEventHandler { - - @EventHandler - public void handle(MessageCreatedEvent event) { - System.out.println("Message received: " + event.getText() + " (" + event.getId() + ")"); - } - - @EventHandler - public void handle(MessageReadEvent event) { - System.out.println("Message read: " + event.getId()); - } -} \ No newline at end of file diff --git a/axon/src/main/java/com/baeldung/axon/events/MessageCreatedEvent.java b/axon/src/main/java/com/baeldung/axon/events/MessageCreatedEvent.java deleted file mode 100644 index 3c9aac5ed8..0000000000 --- a/axon/src/main/java/com/baeldung/axon/events/MessageCreatedEvent.java +++ /dev/null @@ -1,20 +0,0 @@ -package com.baeldung.axon.events; - -public class MessageCreatedEvent { - - private final String id; - private final String text; - - public MessageCreatedEvent(String id, String text) { - this.id = id; - this.text = text; - } - - public String getId() { - return id; - } - - public String getText() { - return text; - } -} \ No newline at end of file diff --git a/axon/src/main/java/com/baeldung/axon/events/MessageReadEvent.java b/axon/src/main/java/com/baeldung/axon/events/MessageReadEvent.java deleted file mode 100644 index 57bfc8e19e..0000000000 --- a/axon/src/main/java/com/baeldung/axon/events/MessageReadEvent.java +++ /dev/null @@ -1,14 +0,0 @@ -package com.baeldung.axon.events; - -public class MessageReadEvent { - - private final String id; - - public MessageReadEvent(String id) { - this.id = id; - } - - public String getId() { - return id; - } -} \ No newline at end of file diff --git a/axon/src/main/java/com/baeldung/axon/gui/OrderRestEndpoint.java b/axon/src/main/java/com/baeldung/axon/gui/OrderRestEndpoint.java new file mode 100644 index 0000000000..a9f34cc691 --- /dev/null +++ b/axon/src/main/java/com/baeldung/axon/gui/OrderRestEndpoint.java @@ -0,0 +1,52 @@ +package com.baeldung.axon.gui; + +import java.util.List; +import java.util.UUID; + +import org.axonframework.commandhandling.gateway.CommandGateway; +import org.axonframework.messaging.responsetypes.ResponseTypes; +import org.axonframework.queryhandling.QueryGateway; +import org.springframework.web.bind.annotation.GetMapping; +import org.springframework.web.bind.annotation.PostMapping; +import org.springframework.web.bind.annotation.RestController; + +import com.baeldung.axon.coreapi.commands.ConfirmOrderCommand; +import com.baeldung.axon.coreapi.commands.PlaceOrderCommand; +import com.baeldung.axon.coreapi.commands.ShipOrderCommand; +import com.baeldung.axon.coreapi.queries.FindAllOrderedProductsQuery; +import com.baeldung.axon.coreapi.queries.OrderedProduct; + +@RestController +public class OrderRestEndpoint { + + private final CommandGateway commandGateway; + private final QueryGateway queryGateway; + + public OrderRestEndpoint(CommandGateway commandGateway, QueryGateway queryGateway) { + this.commandGateway = commandGateway; + this.queryGateway = queryGateway; + } + + @PostMapping("/ship-order") + public void shipOrder() { + String orderId = UUID.randomUUID().toString(); + commandGateway.send(new PlaceOrderCommand(orderId, "Deluxe Chair")); + commandGateway.send(new ConfirmOrderCommand(orderId)); + commandGateway.send(new ShipOrderCommand(orderId)); + } + + @PostMapping("/ship-unconfirmed-order") + public void shipUnconfirmedOrder() { + String orderId = UUID.randomUUID().toString(); + commandGateway.send(new PlaceOrderCommand(orderId, "Deluxe Chair")); + // This throws an exception, as an Order cannot be shipped if it has not been confirmed yet. + commandGateway.send(new ShipOrderCommand(orderId)); + } + + @GetMapping("/all-orders") + public List findAllOrderedProducts() { + return queryGateway.query(new FindAllOrderedProductsQuery(), ResponseTypes.multipleInstancesOf(OrderedProduct.class)) + .join(); + } + +} diff --git a/axon/src/main/java/com/baeldung/axon/querymodel/OrderedProductsEventHandler.java b/axon/src/main/java/com/baeldung/axon/querymodel/OrderedProductsEventHandler.java new file mode 100644 index 0000000000..d4cf3d999b --- /dev/null +++ b/axon/src/main/java/com/baeldung/axon/querymodel/OrderedProductsEventHandler.java @@ -0,0 +1,50 @@ +package com.baeldung.axon.querymodel; + +import java.util.ArrayList; +import java.util.HashMap; +import java.util.List; +import java.util.Map; + +import org.axonframework.eventhandling.EventHandler; +import org.axonframework.queryhandling.QueryHandler; +import org.springframework.stereotype.Service; + +import com.baeldung.axon.coreapi.events.OrderConfirmedEvent; +import com.baeldung.axon.coreapi.events.OrderPlacedEvent; +import com.baeldung.axon.coreapi.events.OrderShippedEvent; +import com.baeldung.axon.coreapi.queries.FindAllOrderedProductsQuery; +import com.baeldung.axon.coreapi.queries.OrderedProduct; + +@Service +public class OrderedProductsEventHandler { + + private final Map orderedProducts = new HashMap<>(); + + @EventHandler + public void on(OrderPlacedEvent event) { + String orderId = event.getOrderId(); + orderedProducts.put(orderId, new OrderedProduct(orderId, event.getProduct())); + } + + @EventHandler + public void on(OrderConfirmedEvent event) { + orderedProducts.computeIfPresent(event.getOrderId(), (orderId, orderedProduct) -> { + orderedProduct.setOrderConfirmed(); + return orderedProduct; + }); + } + + @EventHandler + public void on(OrderShippedEvent event) { + orderedProducts.computeIfPresent(event.getOrderId(), (orderId, orderedProduct) -> { + orderedProduct.setOrderShipped(); + return orderedProduct; + }); + } + + @QueryHandler + public List handle(FindAllOrderedProductsQuery query) { + return new ArrayList<>(orderedProducts.values()); + } + +} \ No newline at end of file diff --git a/axon/src/main/resources/order-api.http b/axon/src/main/resources/order-api.http new file mode 100644 index 0000000000..a3c69c72bc --- /dev/null +++ b/axon/src/main/resources/order-api.http @@ -0,0 +1,11 @@ +POST http://localhost:8080/ship-order + +### + +POST http://localhost:8080/ship-unconfirmed-order + +### + +GET http://localhost:8080/all-orders + +### diff --git a/axon/src/test/java/com/baeldung/axon/MessagesAggregateIntegrationTest.java b/axon/src/test/java/com/baeldung/axon/MessagesAggregateIntegrationTest.java deleted file mode 100644 index ad099d2c2b..0000000000 --- a/axon/src/test/java/com/baeldung/axon/MessagesAggregateIntegrationTest.java +++ /dev/null @@ -1,42 +0,0 @@ -package com.baeldung.axon; - -import com.baeldung.axon.aggregates.MessagesAggregate; -import com.baeldung.axon.commands.CreateMessageCommand; -import com.baeldung.axon.commands.MarkReadMessageCommand; -import com.baeldung.axon.events.MessageCreatedEvent; -import com.baeldung.axon.events.MessageReadEvent; -import org.axonframework.test.aggregate.AggregateTestFixture; -import org.axonframework.test.aggregate.FixtureConfiguration; -import org.junit.Before; -import org.junit.Test; - -import java.util.UUID; - -public class MessagesAggregateIntegrationTest { - - private FixtureConfiguration fixture; - - @Before - public void setUp() throws Exception { - fixture = new AggregateTestFixture(MessagesAggregate.class); - - } - - @Test - public void giveAggregateRoot_whenCreateMessageCommand_thenShouldProduceMessageCreatedEvent() throws Exception { - String eventText = "Hello, how is your day?"; - String id = UUID.randomUUID().toString(); - fixture.given() - .when(new CreateMessageCommand(id, eventText)) - .expectEvents(new MessageCreatedEvent(id, eventText)); - } - - @Test - public void givenMessageCreatedEvent_whenReadMessageCommand_thenShouldProduceMessageReadEvent() throws Exception { - String id = UUID.randomUUID().toString(); - - fixture.given(new MessageCreatedEvent(id, "Hello :-)")) - .when(new MarkReadMessageCommand(id)) - .expectEvents(new MessageReadEvent(id)); - } -} \ No newline at end of file diff --git a/axon/src/test/java/com/baeldung/axon/commandmodel/OrderAggregateUnitTest.java b/axon/src/test/java/com/baeldung/axon/commandmodel/OrderAggregateUnitTest.java new file mode 100644 index 0000000000..9beedbaa19 --- /dev/null +++ b/axon/src/test/java/com/baeldung/axon/commandmodel/OrderAggregateUnitTest.java @@ -0,0 +1,61 @@ +package com.baeldung.axon.commandmodel; + +import java.util.UUID; + +import org.axonframework.test.aggregate.AggregateTestFixture; +import org.axonframework.test.aggregate.FixtureConfiguration; +import org.junit.*; + +import com.baeldung.axon.coreapi.commands.ConfirmOrderCommand; +import com.baeldung.axon.coreapi.commands.PlaceOrderCommand; +import com.baeldung.axon.coreapi.commands.ShipOrderCommand; +import com.baeldung.axon.coreapi.events.OrderConfirmedEvent; +import com.baeldung.axon.coreapi.events.OrderPlacedEvent; +import com.baeldung.axon.coreapi.events.OrderShippedEvent; + +public class OrderAggregateUnitTest { + + private FixtureConfiguration fixture; + + @Before + public void setUp() { + fixture = new AggregateTestFixture<>(OrderAggregate.class); + } + + @Test + public void giveNoPriorActivity_whenPlaceOrderCommand_thenShouldPublishOrderPlacedEvent() { + String orderId = UUID.randomUUID().toString(); + String product = "Deluxe Chair"; + fixture.givenNoPriorActivity() + .when(new PlaceOrderCommand(orderId, product)) + .expectEvents(new OrderPlacedEvent(orderId, product)); + } + + @Test + public void givenOrderPlacedEvent_whenConfirmOrderCommand_thenShouldPublishOrderConfirmedEvent() { + String orderId = UUID.randomUUID().toString(); + String product = "Deluxe Chair"; + fixture.given(new OrderPlacedEvent(orderId, product)) + .when(new ConfirmOrderCommand(orderId)) + .expectEvents(new OrderConfirmedEvent(orderId)); + } + + @Test + public void givenOrderPlacedEvent_whenShipOrderCommand_thenShouldThrowIllegalStateException() { + String orderId = UUID.randomUUID().toString(); + String product = "Deluxe Chair"; + fixture.given(new OrderPlacedEvent(orderId, product)) + .when(new ShipOrderCommand(orderId)) + .expectException(IllegalStateException.class); + } + + @Test + public void givenOrderPlacedEventAndOrderConfirmedEvent_whenShipOrderCommand_thenShouldPublishOrderShippedEvent() { + String orderId = UUID.randomUUID().toString(); + String product = "Deluxe Chair"; + fixture.given(new OrderPlacedEvent(orderId, product), new OrderConfirmedEvent(orderId)) + .when(new ShipOrderCommand(orderId)) + .expectEvents(new OrderShippedEvent(orderId)); + } + +} \ No newline at end of file diff --git a/core-java-11/README.md b/core-java-11/README.md index 181ada3f45..c8039f4bc5 100644 --- a/core-java-11/README.md +++ b/core-java-11/README.md @@ -2,4 +2,4 @@ - [Java 11 Single File Source Code](https://www.baeldung.com/java-single-file-source-code) - [Java 11 Local Variable Syntax for Lambda Parameters](https://www.baeldung.com/java-var-lambda-params) - +- [Java 11 String API Additions](https://www.baeldung.com/java-11-string-api) diff --git a/core-java-8/README.md b/core-java-8/README.md index e5fa953cc7..892dc71f76 100644 --- a/core-java-8/README.md +++ b/core-java-8/README.md @@ -33,3 +33,8 @@ - [Java Primitives versus Objects](https://www.baeldung.com/java-primitives-vs-objects) - [How to Use if/else Logic in Java 8 Streams](https://www.baeldung.com/java-8-streams-if-else-logic) - [How to Replace Many if Statements in Java](https://www.baeldung.com/java-replace-if-statements) +- [Java @Override Annotation](https://www.baeldung.com/java-override) +- [Java @SuppressWarnings Annotation](https://www.baeldung.com/java-suppresswarnings) +- [Java @SafeVarargs Annotation](https://www.baeldung.com/java-safevarargs) +- [Java @Deprecated Annotation](https://www.baeldung.com/java-deprecated) +- [Java 8 Predicate Chain](https://www.baeldung.com/java-predicate-chain) diff --git a/core-java-8/src/main/java/com/baeldung/interfaces/Electronic.java b/core-java-8/src/main/java/com/baeldung/interfaces/Electronic.java deleted file mode 100644 index bfbc381483..0000000000 --- a/core-java-8/src/main/java/com/baeldung/interfaces/Electronic.java +++ /dev/null @@ -1,22 +0,0 @@ -package com.baeldung.interfaces; - -public interface Electronic { - //Constant variable - public static final String LED = "LED"; - - //Abstract method - public int getElectricityUse(); - - // Static method - public static boolean isEnergyEfficient(String electtronicType) { - if (electtronicType.equals(LED)) { - return true; - } - return false; - } - - //Default method - public default void printDescription() { - System.out.println("Electronic Description"); - } -} diff --git a/core-java-8/src/main/java/com/baeldung/interfaces/Motorcycle.java b/core-java-8/src/main/java/com/baeldung/interfaces/Motorcycle.java deleted file mode 100644 index 6003f476a3..0000000000 --- a/core-java-8/src/main/java/com/baeldung/interfaces/Motorcycle.java +++ /dev/null @@ -1,10 +0,0 @@ -package com.baeldung.interfaces; - -import com.baeldung.interfaces.multiinheritance.Transform; - -public class Motorcycle implements Transform { - @Override - public void transform() { - // Implementation - } -} \ No newline at end of file diff --git a/core-java-8/src/main/java/com/baeldung/interfaces/Truck.java b/core-java-8/src/main/java/com/baeldung/interfaces/Truck.java deleted file mode 100644 index d78de23371..0000000000 --- a/core-java-8/src/main/java/com/baeldung/interfaces/Truck.java +++ /dev/null @@ -1,8 +0,0 @@ -package com.baeldung.interfaces; - -public class Truck extends Vehicle { - @Override - public void transform() { - // implementation - } -} diff --git a/core-java-8/src/main/java/com/baeldung/interfaces/Vehicle.java b/core-java-8/src/main/java/com/baeldung/interfaces/Vehicle.java deleted file mode 100644 index 8b4662e1a3..0000000000 --- a/core-java-8/src/main/java/com/baeldung/interfaces/Vehicle.java +++ /dev/null @@ -1,6 +0,0 @@ -package com.baeldung.interfaces; - -import com.baeldung.interfaces.multiinheritance.Transform; - -public abstract class Vehicle implements Transform { -} diff --git a/core-java-8/src/main/java/com/baeldung/interfaces/multiinheritance/Vehicle.java b/core-java-8/src/main/java/com/baeldung/interfaces/multiinheritance/Vehicle.java deleted file mode 100644 index fb0d36e3e0..0000000000 --- a/core-java-8/src/main/java/com/baeldung/interfaces/multiinheritance/Vehicle.java +++ /dev/null @@ -1,13 +0,0 @@ -package com.baeldung.interfaces.multiinheritance; - -public class Vehicle implements Fly, Transform { - @Override - public void fly() { - System.out.println("I can Fly!!"); - } - - @Override - public void transform() { - System.out.println("I can Transform!!"); - } -} diff --git a/core-java-8/src/main/java/com/baeldung/interfaces/polymorphysim/Circle.java b/core-java-8/src/main/java/com/baeldung/interfaces/polymorphysim/Circle.java deleted file mode 100644 index afb3142d96..0000000000 --- a/core-java-8/src/main/java/com/baeldung/interfaces/polymorphysim/Circle.java +++ /dev/null @@ -1,25 +0,0 @@ -package com.baeldung.interfaces.polymorphysim; - -public class Circle implements Shape { - - private double radius; - - public Circle(double radius){ - this.radius = radius; - } - - @Override - public String name() { - return "Circle"; - } - - @Override - public double area() { - return Math.PI * (radius * radius); - } - - @Override - public String getColor() { - return "green"; - } -} diff --git a/core-java-8/src/main/java/com/baeldung/interfaces/polymorphysim/DisplayShape.java b/core-java-8/src/main/java/com/baeldung/interfaces/polymorphysim/DisplayShape.java deleted file mode 100644 index d9c9dd107a..0000000000 --- a/core-java-8/src/main/java/com/baeldung/interfaces/polymorphysim/DisplayShape.java +++ /dev/null @@ -1,26 +0,0 @@ -package com.baeldung.interfaces.polymorphysim; - -import java.util.ArrayList; - -public class DisplayShape { - - private ArrayList shapes; - - public ArrayList getShapes() { - return shapes; - } - - public DisplayShape() { - shapes = new ArrayList<>(); - } - - public void add(Shape shape) { - shapes.add(shape); - } - - public void display() { - for (Shape shape : shapes) { - System.out.println(shape.name() + " area: " + shape.area()); - } - } -} diff --git a/core-java-8/src/main/java/com/baeldung/interfaces/polymorphysim/FunctionalMain.java b/core-java-8/src/main/java/com/baeldung/interfaces/polymorphysim/FunctionalMain.java deleted file mode 100644 index 5316dd7db7..0000000000 --- a/core-java-8/src/main/java/com/baeldung/interfaces/polymorphysim/FunctionalMain.java +++ /dev/null @@ -1,23 +0,0 @@ -package com.baeldung.interfaces.polymorphysim; - -import java.util.function.Predicate; - -public class FunctionalMain { - -public static void main(String[] args) { - Shape circleShape = new Circle(2); - Shape squareShape = new Square(2); - - DisplayShape DisplayShape = new DisplayShape(); - DisplayShape.add(circleShape); - DisplayShape.add(squareShape); - - Predicate checkArea = (shape) -> shape.area() < 5; - - for (Shape shape : DisplayShape.getShapes()) { - if (checkArea.test(shape)) { - System.out.println(shape.name() + " " + shape.area()); - } - } -} -} diff --git a/core-java-8/src/main/java/com/baeldung/interfaces/polymorphysim/MainPolymorphic.java b/core-java-8/src/main/java/com/baeldung/interfaces/polymorphysim/MainPolymorphic.java deleted file mode 100644 index cc43c1300b..0000000000 --- a/core-java-8/src/main/java/com/baeldung/interfaces/polymorphysim/MainPolymorphic.java +++ /dev/null @@ -1,15 +0,0 @@ -package com.baeldung.interfaces.polymorphysim; - -public class MainPolymorphic { - public static void main(String[] args){ - - Shape circleShape = new Circle(2); - Shape squareShape = new Square(2); - - DisplayShape displayShape = new DisplayShape(); - displayShape.add(circleShape); - displayShape.add(squareShape); - - displayShape.display(); - } -} diff --git a/core-java-8/src/main/java/com/baeldung/interfaces/polymorphysim/Shape.java b/core-java-8/src/main/java/com/baeldung/interfaces/polymorphysim/Shape.java deleted file mode 100644 index 560e07a80a..0000000000 --- a/core-java-8/src/main/java/com/baeldung/interfaces/polymorphysim/Shape.java +++ /dev/null @@ -1,9 +0,0 @@ -package com.baeldung.interfaces.polymorphysim; - -import com.baeldung.interfaces.HasColor; - -public interface Shape extends HasColor { - - public abstract String name(); - public abstract double area(); -} diff --git a/core-java-8/src/main/java/com/baeldung/interfaces/polymorphysim/Square.java b/core-java-8/src/main/java/com/baeldung/interfaces/polymorphysim/Square.java deleted file mode 100644 index 00b75ace20..0000000000 --- a/core-java-8/src/main/java/com/baeldung/interfaces/polymorphysim/Square.java +++ /dev/null @@ -1,25 +0,0 @@ -package com.baeldung.interfaces.polymorphysim; - -public class Square implements Shape { - - private double width; - - public Square(double width) { - this.width = width; - } - - @Override - public String name() { - return "Square"; - } - - @Override - public double area() { - return width * width; - } - - @Override - public String getColor() { - return "red"; - } -} diff --git a/core-java-8/src/test/java/com/baeldung/interfaces/PolymorphysimUnitTest.java b/core-java-8/src/test/java/com/baeldung/interfaces/PolymorphysimUnitTest.java deleted file mode 100644 index 7ded5e6621..0000000000 --- a/core-java-8/src/test/java/com/baeldung/interfaces/PolymorphysimUnitTest.java +++ /dev/null @@ -1,26 +0,0 @@ -package com.baeldung.interfaces; - -import com.baeldung.interfaces.polymorphysim.Circle; -import com.baeldung.interfaces.polymorphysim.Shape; -import com.baeldung.interfaces.polymorphysim.Square; -import org.assertj.core.api.Assertions; -import org.junit.Test; - -public class PolymorphysimUnitTest { - - @Test - public void whenInterfacePointsToCircle_CircleAreaMethodisBeingCalled(){ - double expectedArea = 12.566370614359172; - Shape circle = new Circle(2); - double actualArea = circle.area(); - Assertions.assertThat(actualArea).isEqualTo(expectedArea); - } - - @Test - public void whenInterfacePointsToSquare_SquareAreaMethodisBeingCalled(){ - double expectedArea = 4; - Shape square = new Square(2); - double actualArea = square.area(); - Assertions.assertThat(actualArea).isEqualTo(expectedArea); - } -} diff --git a/core-java-9/src/main/java/com/baeldung/java9/set/UnmodifiableSet.java b/core-java-9/src/main/java/com/baeldung/java9/set/UnmodifiableSet.java new file mode 100644 index 0000000000..7dbcd2a3a3 --- /dev/null +++ b/core-java-9/src/main/java/com/baeldung/java9/set/UnmodifiableSet.java @@ -0,0 +1,44 @@ +package com.baeldung.java9.set; + +import com.google.common.collect.ImmutableSet; + +import java.util.Collections; +import java.util.HashSet; +import java.util.Set; + +public class UnmodifiableSet { + + public static void main(String[] args) { + + Set set = new HashSet<>(); + set.add("Canada"); + set.add("USA"); + + coreJDK(set); + guavaOf(); + copyOf(set); + java9Of(); + } + + private static void java9Of() { + Set immutable = Set.of("Canada", "USA"); + System.out.println(immutable); + } + + private static void guavaOf() { + Set immutable = ImmutableSet.of("Canada", "USA"); + System.out.println(immutable); + } + + private static void copyOf(Set set) { + Set immutable = ImmutableSet.copyOf(set); + set.add("Costa Rica"); + System.out.println(immutable); + } + + private static void coreJDK(Set set) { + Set unmodifiableSet = Collections.unmodifiableSet(set); + set.add("Costa Rica"); + System.out.println(unmodifiableSet); + } +} diff --git a/core-java-9/src/test/java/com/baeldung/java9/SetExamplesUnitTest.java b/core-java-9/src/test/java/com/baeldung/java9/SetExamplesUnitTest.java index 9e7e8e6e4b..28e71affcc 100644 --- a/core-java-9/src/test/java/com/baeldung/java9/SetExamplesUnitTest.java +++ b/core-java-9/src/test/java/com/baeldung/java9/SetExamplesUnitTest.java @@ -1,5 +1,7 @@ package com.baeldung.java9; +import java.util.Collections; +import java.util.HashSet; import java.util.Set; import org.junit.Test; @@ -23,4 +25,14 @@ public class SetExamplesUnitTest { Set intSet = Set.of(intArray); assertEquals(intSet.size(), intArray.length); } + + @Test(expected = UnsupportedOperationException.class) + public void testUnmodifiableSet() { + Set set = new HashSet<>(); + set.add("Canada"); + set.add("USA"); + + Set unmodifiableSet = Collections.unmodifiableSet(set); + unmodifiableSet.add("Costa Rica"); + } } diff --git a/core-java-arrays/README.md b/core-java-arrays/README.md index 56110585ac..400dd7793c 100644 --- a/core-java-arrays/README.md +++ b/core-java-arrays/README.md @@ -13,3 +13,4 @@ - [How to Invert an Array in Java](http://www.baeldung.com/java-invert-array) - [Array Operations in Java](http://www.baeldung.com/java-common-array-operations) - [Intersection Between two Integer Arrays](https://www.baeldung.com/java-array-intersection) +- [Sorting Arrays in Java](https://www.baeldung.com/java-sorting-arrays) diff --git a/core-java-collections-list/README.md b/core-java-collections-list/README.md index aba53f5b30..a35e714006 100644 --- a/core-java-collections-list/README.md +++ b/core-java-collections-list/README.md @@ -24,4 +24,5 @@ - [Java List Initialization in One Line](https://www.baeldung.com/java-init-list-one-line) - [Ways to Iterate Over a List in Java](https://www.baeldung.com/java-iterate-list) - [ClassCastException: Arrays$ArrayList cannot be cast to ArrayList](https://www.baeldung.com/java-classcastexception-arrays-arraylist) -- [Flattening Nested Collections in Java](http://www.baeldung.com/java-flatten-nested-collections) \ No newline at end of file +- [Flattening Nested Collections in Java](http://www.baeldung.com/java-flatten-nested-collections) +- [Intersection of Two Lists in Java](https://www.baeldung.com/java-lists-intersection) diff --git a/core-java-collections-list/src/main/java/com/baeldung/list/multidimensional/ArrayListOfArrayList.java b/core-java-collections-list/src/main/java/com/baeldung/list/multidimensional/ArrayListOfArrayList.java index 2c3da7b1fc..e11f8e8ba0 100644 --- a/core-java-collections-list/src/main/java/com/baeldung/list/multidimensional/ArrayListOfArrayList.java +++ b/core-java-collections-list/src/main/java/com/baeldung/list/multidimensional/ArrayListOfArrayList.java @@ -6,11 +6,11 @@ public class ArrayListOfArrayList { public static void main(String args[]) { - int numVertices = 3; - ArrayList> graph = new ArrayList<>(numVertices); + int vertexCount = 3; + ArrayList> graph = new ArrayList<>(vertexCount); //Initializing each element of ArrayList with ArrayList - for(int i=0; i< numVertices; i++) { + for(int i = 0; i< vertexCount; i++) { graph.add(new ArrayList()); } @@ -21,13 +21,14 @@ public class ArrayListOfArrayList { graph.get(1).add(0); graph.get(2).add(1); graph.get(0).add(2); - - //Printing all the edges - for(int vertexNo=0; vertexNo listOfVertices = graph.get(vertexNo); - for(int i=0; i > > space = new ArrayList<>(x_axis_length); //Initializing each element of ArrayList with ArrayList< ArrayList > - for(int i=0; i< x_axis_length; i++) { + for(int i = 0; i < x_axis_length; i++) { space.add(new ArrayList< ArrayList >(y_axis_length)); - for(int j =0; j< y_axis_length; j++) { + for(int j = 0; j < y_axis_length; j++) { space.get(i).add(new ArrayList(z_axis_length)); } } @@ -33,9 +33,9 @@ public class ThreeDimensionalArrayList { space.get(1).get(1).add(1,"Yellow"); //Printing colors for all the points - for(int i=0; i vector = new Vector<>(); + vector.add("baeldung"); + vector.add("Vector"); + vector.add("example"); + + Enumeration e = vector.elements(); + while(e.hasMoreElements()){ + System.out.println(e.nextElement()); + } + + Iterator iterator = vector.iterator(); + while (iterator.hasNext()) { + System.out.println(iterator.next()); + } + } + +} diff --git a/core-java-collections/src/main/java/com/baeldung/performance/ArrayListBenchmark.java b/core-java-collections/src/main/java/com/baeldung/performance/ArrayListBenchmark.java index dddd85007d..331ae8d908 100644 --- a/core-java-collections/src/main/java/com/baeldung/performance/ArrayListBenchmark.java +++ b/core-java-collections/src/main/java/com/baeldung/performance/ArrayListBenchmark.java @@ -9,7 +9,7 @@ import java.util.*; import java.util.concurrent.TimeUnit; @BenchmarkMode(Mode.AverageTime) -@OutputTimeUnit(TimeUnit.MICROSECONDS) +@OutputTimeUnit(TimeUnit.NANOSECONDS) @Warmup(iterations = 10) public class ArrayListBenchmark { @@ -17,6 +17,7 @@ public class ArrayListBenchmark { public static class MyState { List employeeList = new ArrayList<>(); + Vector employeeVector = new Vector<>(); //LinkedList employeeList = new LinkedList<>(); long iterations = 100000; @@ -29,9 +30,11 @@ public class ArrayListBenchmark { public void setUp() { for (long i = 0; i < iterations; i++) { employeeList.add(new Employee(i, "John")); + employeeVector.add(new Employee(i, "John")); } employeeList.add(employee); + employeeVector.add(employee); employeeIndex = employeeList.indexOf(employee); } } @@ -46,6 +49,11 @@ public class ArrayListBenchmark { return state.employeeList.contains(state.employee); } + @Benchmark + public boolean testContainsVector(ArrayListBenchmark.MyState state) { + return state.employeeVector.contains(state.employee); + } + @Benchmark public int testIndexOf(ArrayListBenchmark.MyState state) { return state.employeeList.indexOf(state.employee); @@ -56,19 +64,24 @@ public class ArrayListBenchmark { return state.employeeList.get(state.employeeIndex); } + @Benchmark + public Employee testVectorGet(ArrayListBenchmark.MyState state) { + return state.employeeVector.get(state.employeeIndex); + } + @Benchmark public boolean testRemove(ArrayListBenchmark.MyState state) { return state.employeeList.remove(state.employee); } -// @Benchmark -// public void testAdd(ArrayListBenchmark.MyState state) { -// state.employeeList.add(new Employee(state.iterations + 1, "John")); -// } + @Benchmark + public void testAdd(ArrayListBenchmark.MyState state) { + state.employeeList.add(new Employee(state.iterations + 1, "John")); + } public static void main(String[] args) throws Exception { Options options = new OptionsBuilder() - .include(ArrayListBenchmark.class.getSimpleName()).threads(1) + .include(ArrayListBenchmark.class.getSimpleName()).threads(3) .forks(1).shouldFailOnError(true) .shouldDoGC(true) .jvmArgs("-server").build(); diff --git a/core-java-collections/src/main/java/com/baeldung/queueInterface/CustomBaeldungQueue.java b/core-java-collections/src/main/java/com/baeldung/queueInterface/CustomBaeldungQueue.java new file mode 100644 index 0000000000..6b088a5079 --- /dev/null +++ b/core-java-collections/src/main/java/com/baeldung/queueInterface/CustomBaeldungQueue.java @@ -0,0 +1,48 @@ +package com.baeldung.queueinterface; + +import java.util.AbstractQueue; +import java.util.Iterator; +import java.util.LinkedList; + +public class CustomBaeldungQueue extends AbstractQueue { + + private LinkedList elements; + + public CustomBaeldungQueue() { + this.elements = new LinkedList(); + } + + @Override + public Iterator iterator() { + return elements.iterator(); + } + + @Override + public int size() { + return elements.size(); + } + + @Override + public boolean offer(T t) { + if(t == null) return false; + elements.add(t); + return true; + } + + @Override + public T poll() { + + Iterator iter = elements.iterator(); + T t = iter.next(); + if(t != null){ + iter.remove(); + return t; + } + return null; + } + + @Override + public T peek() { + return elements.getFirst(); + } +} diff --git a/core-java-collections/src/test/java/com/baeldung/queueInterface/PriorityQueueUnitTest.java b/core-java-collections/src/test/java/com/baeldung/queueInterface/PriorityQueueUnitTest.java new file mode 100644 index 0000000000..c5b564b55b --- /dev/null +++ b/core-java-collections/src/test/java/com/baeldung/queueInterface/PriorityQueueUnitTest.java @@ -0,0 +1,53 @@ +package com.baeldung.queueinterface; + +import org.junit.Before; +import org.junit.Test; + +import java.util.PriorityQueue; + +import static org.junit.Assert.assertEquals; + +public class PriorityQueueUnitTest { + + + + @Test + public void givenIntegerQueue_whenIntegersOutOfOrder_checkRetrievalOrderIsNatural() { + + PriorityQueue integerQueue = new PriorityQueue<>(); + + integerQueue.add(9); + integerQueue.add(2); + integerQueue.add(4); + + int first = integerQueue.poll(); + int second = integerQueue.poll(); + int third = integerQueue.poll(); + + assertEquals(2, first); + assertEquals(4, second); + assertEquals(9, third); + + + } + + @Test + public void givenStringQueue_whenStringsAddedOutOfNaturalOrder_checkRetrievalOrderNatural() { + + PriorityQueue stringQueue = new PriorityQueue<>(); + + stringQueue.add("banana"); + stringQueue.add("apple"); + stringQueue.add("cherry"); + + String first = stringQueue.poll(); + String second = stringQueue.poll(); + String third = stringQueue.poll(); + + assertEquals("apple", first); + assertEquals("banana", second); + assertEquals("cherry", third); + + + } +} diff --git a/core-java-collections/src/test/java/com/baeldung/queueinterface/CustomBaeldungQueueUnitTest.java b/core-java-collections/src/test/java/com/baeldung/queueinterface/CustomBaeldungQueueUnitTest.java new file mode 100644 index 0000000000..6dec768542 --- /dev/null +++ b/core-java-collections/src/test/java/com/baeldung/queueinterface/CustomBaeldungQueueUnitTest.java @@ -0,0 +1,30 @@ +package com.baeldung.queueinterface; + +import org.junit.Before; +import org.junit.Test; + +import static org.junit.Assert.*; + +public class CustomBaeldungQueueUnitTest { + + private CustomBaeldungQueue customQueue; + + @Before + public void setUp() throws Exception { + customQueue = new CustomBaeldungQueue<>(); + } + + @Test + public void givenQueueWithTwoElements_whenElementsRetrieved_checkRetrievalCorrect() { + + customQueue.add(7); + customQueue.add(5); + + int first = customQueue.poll(); + int second = customQueue.poll(); + + assertEquals(7, first); + assertEquals(5, second); + + } +} diff --git a/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/application/Application.java b/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/application/Application.java new file mode 100644 index 0000000000..0c5caba8a0 --- /dev/null +++ b/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/application/Application.java @@ -0,0 +1,86 @@ +package com.baeldung.concurrent.threadsafety.application; + +import com.baeldung.concurrent.threadsafety.callables.AtomicCounterCallable; +import com.baeldung.concurrent.threadsafety.mathutils.MathUtils; +import com.baeldung.concurrent.threadsafety.callables.CounterCallable; +import com.baeldung.concurrent.threadsafety.callables.ExtrinsicLockCounterCallable; +import com.baeldung.concurrent.threadsafety.callables.MessageServiceCallable; +import com.baeldung.concurrent.threadsafety.callables.ReentranReadWriteLockCounterCallable; +import com.baeldung.concurrent.threadsafety.callables.ReentrantLockCounterCallable; +import com.baeldung.concurrent.threadsafety.services.AtomicCounter; +import com.baeldung.concurrent.threadsafety.services.Counter; +import com.baeldung.concurrent.threadsafety.services.ExtrinsicLockCounter; +import com.baeldung.concurrent.threadsafety.services.MessageService; +import com.baeldung.concurrent.threadsafety.services.ReentrantLockCounter; +import com.baeldung.concurrent.threadsafety.services.ReentrantReadWriteLockCounter; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.Collection; +import java.util.Collections; +import java.util.Map; +import java.util.concurrent.ConcurrentHashMap; +import java.util.concurrent.ExecutionException; +import java.util.concurrent.ExecutorService; +import java.util.concurrent.Executors; +import java.util.concurrent.Future; + +public class Application { + + public static void main(String[] args) throws InterruptedException, ExecutionException { + + new Thread(() -> { + System.out.println(MathUtils.factorial(10)); + }).start(); + new Thread(() -> { + System.out.println(MathUtils.factorial(5)); + }).start(); + + ExecutorService executorService = Executors.newFixedThreadPool(10); + MessageService messageService = new MessageService("Welcome to Baeldung!"); + Future future1 = (Future) executorService.submit(new MessageServiceCallable(messageService)); + Future future2 = (Future) executorService.submit(new MessageServiceCallable(messageService)); + System.out.println(future1.get()); + System.out.println(future2.get()); + + Counter counter = new Counter(); + Future future3 = (Future) executorService.submit(new CounterCallable(counter)); + Future future4 = (Future) executorService.submit(new CounterCallable(counter)); + System.out.println(future3.get()); + System.out.println(future4.get()); + + ExtrinsicLockCounter extrinsicLockCounter = new ExtrinsicLockCounter(); + Future future5 = (Future) executorService.submit(new ExtrinsicLockCounterCallable(extrinsicLockCounter)); + Future future6 = (Future) executorService.submit(new ExtrinsicLockCounterCallable(extrinsicLockCounter)); + System.out.println(future5.get()); + System.out.println(future6.get()); + + ReentrantLockCounter reentrantLockCounter = new ReentrantLockCounter(); + Future future7 = (Future) executorService.submit(new ReentrantLockCounterCallable(reentrantLockCounter)); + Future future8 = (Future) executorService.submit(new ReentrantLockCounterCallable(reentrantLockCounter)); + System.out.println(future7.get()); + System.out.println(future8.get()); + + ReentrantReadWriteLockCounter reentrantReadWriteLockCounter = new ReentrantReadWriteLockCounter(); + Future future9 = (Future) executorService.submit(new ReentranReadWriteLockCounterCallable(reentrantReadWriteLockCounter)); + Future future10 = (Future) executorService.submit(new ReentranReadWriteLockCounterCallable(reentrantReadWriteLockCounter)); + System.out.println(future9.get()); + System.out.println(future10.get()); + + AtomicCounter atomicCounter = new AtomicCounter(); + Future future11 = (Future) executorService.submit(new AtomicCounterCallable(atomicCounter)); + Future future12 = (Future) executorService.submit(new AtomicCounterCallable(atomicCounter)); + System.out.println(future11.get()); + System.out.println(future12.get()); + + Collection syncCollection = Collections.synchronizedCollection(new ArrayList<>()); + Thread thread11 = new Thread(() -> syncCollection.addAll(Arrays.asList(1, 2, 3, 4, 5, 6))); + Thread thread12 = new Thread(() -> syncCollection.addAll(Arrays.asList(1, 2, 3, 4, 5, 6))); + thread11.start(); + thread12.start(); + + Map concurrentMap = new ConcurrentHashMap<>(); + concurrentMap.put("1", "one"); + concurrentMap.put("2", "two"); + concurrentMap.put("3", "three"); + } +} diff --git a/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/callables/AtomicCounterCallable.java b/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/callables/AtomicCounterCallable.java new file mode 100644 index 0000000000..d711299b5c --- /dev/null +++ b/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/callables/AtomicCounterCallable.java @@ -0,0 +1,19 @@ +package com.baeldung.concurrent.threadsafety.callables; + +import com.baeldung.concurrent.threadsafety.services.AtomicCounter; +import java.util.concurrent.Callable; + +public class AtomicCounterCallable implements Callable { + + private final AtomicCounter counter; + + public AtomicCounterCallable(AtomicCounter counter) { + this.counter = counter; + } + + @Override + public Integer call() throws Exception { + counter.incrementCounter(); + return counter.getCounter(); + } +} diff --git a/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/callables/CounterCallable.java b/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/callables/CounterCallable.java new file mode 100644 index 0000000000..cdcd84a17b --- /dev/null +++ b/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/callables/CounterCallable.java @@ -0,0 +1,19 @@ +package com.baeldung.concurrent.threadsafety.callables; + +import com.baeldung.concurrent.threadsafety.services.Counter; +import java.util.concurrent.Callable; + +public class CounterCallable implements Callable { + + private final Counter counter; + + public CounterCallable(Counter counter) { + this.counter = counter; + } + + @Override + public Integer call() throws Exception { + counter.incrementCounter(); + return counter.getCounter(); + } +} diff --git a/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/callables/ExtrinsicLockCounterCallable.java b/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/callables/ExtrinsicLockCounterCallable.java new file mode 100644 index 0000000000..29533e7630 --- /dev/null +++ b/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/callables/ExtrinsicLockCounterCallable.java @@ -0,0 +1,19 @@ +package com.baeldung.concurrent.threadsafety.callables; + +import com.baeldung.concurrent.threadsafety.services.ExtrinsicLockCounter; +import java.util.concurrent.Callable; + +public class ExtrinsicLockCounterCallable implements Callable { + + private final ExtrinsicLockCounter counter; + + public ExtrinsicLockCounterCallable(ExtrinsicLockCounter counter) { + this.counter = counter; + } + + @Override + public Integer call() throws Exception { + counter.incrementCounter(); + return counter.getCounter(); + } +} diff --git a/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/callables/MessageServiceCallable.java b/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/callables/MessageServiceCallable.java new file mode 100644 index 0000000000..84e8c7bb51 --- /dev/null +++ b/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/callables/MessageServiceCallable.java @@ -0,0 +1,19 @@ +package com.baeldung.concurrent.threadsafety.callables; + +import com.baeldung.concurrent.threadsafety.services.MessageService; +import java.util.concurrent.Callable; + +public class MessageServiceCallable implements Callable { + + private final MessageService messageService; + + public MessageServiceCallable(MessageService messageService) { + this.messageService = messageService; + + } + + @Override + public String call() { + return messageService.getMesssage(); + } +} diff --git a/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/callables/ReentranReadWriteLockCounterCallable.java b/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/callables/ReentranReadWriteLockCounterCallable.java new file mode 100644 index 0000000000..e806460d50 --- /dev/null +++ b/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/callables/ReentranReadWriteLockCounterCallable.java @@ -0,0 +1,20 @@ +package com.baeldung.concurrent.threadsafety.callables; + +import com.baeldung.concurrent.threadsafety.services.ReentrantReadWriteLockCounter; +import java.util.concurrent.Callable; + +public class ReentranReadWriteLockCounterCallable implements Callable { + + private final ReentrantReadWriteLockCounter counter; + + public ReentranReadWriteLockCounterCallable(ReentrantReadWriteLockCounter counter) { + this.counter = counter; + } + + @Override + public Integer call() throws Exception { + counter.incrementCounter(); + return counter.getCounter(); + } + +} diff --git a/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/callables/ReentrantLockCounterCallable.java b/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/callables/ReentrantLockCounterCallable.java new file mode 100644 index 0000000000..3511a98c60 --- /dev/null +++ b/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/callables/ReentrantLockCounterCallable.java @@ -0,0 +1,19 @@ +package com.baeldung.concurrent.threadsafety.callables; + +import com.baeldung.concurrent.threadsafety.services.ReentrantLockCounter; +import java.util.concurrent.Callable; + +public class ReentrantLockCounterCallable implements Callable { + + private final ReentrantLockCounter counter; + + public ReentrantLockCounterCallable(ReentrantLockCounter counter) { + this.counter = counter; + } + + @Override + public Integer call() throws Exception { + counter.incrementCounter(); + return counter.getCounter(); + } +} diff --git a/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/mathutils/MathUtils.java b/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/mathutils/MathUtils.java new file mode 100644 index 0000000000..f560cd4281 --- /dev/null +++ b/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/mathutils/MathUtils.java @@ -0,0 +1,14 @@ +package com.baeldung.concurrent.threadsafety.mathutils; + +import java.math.BigInteger; + +public class MathUtils { + + public static BigInteger factorial(int number) { + BigInteger f = new BigInteger("1"); + for (int i = 2; i <= number; i++) { + f = f.multiply(BigInteger.valueOf(i)); + } + return f; + } +} diff --git a/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/services/AtomicCounter.java b/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/services/AtomicCounter.java new file mode 100644 index 0000000000..32a373495c --- /dev/null +++ b/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/services/AtomicCounter.java @@ -0,0 +1,18 @@ +package com.baeldung.concurrent.threadsafety.services; + +import java.util.concurrent.atomic.AtomicInteger; + +public class AtomicCounter { + + private final AtomicInteger counter = new AtomicInteger(); + + public AtomicCounter() {} + + public void incrementCounter() { + counter.incrementAndGet(); + } + + public synchronized int getCounter() { + return counter.get(); + } +} diff --git a/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/services/Counter.java b/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/services/Counter.java new file mode 100644 index 0000000000..f7dbc05639 --- /dev/null +++ b/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/services/Counter.java @@ -0,0 +1,18 @@ +package com.baeldung.concurrent.threadsafety.services; + +public class Counter { + + private volatile int counter; + + public Counter() { + this.counter = 0; + } + + public synchronized void incrementCounter() { + counter += 1; + } + + public int getCounter() { + return counter; + } +} diff --git a/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/services/ExtrinsicLockCounter.java b/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/services/ExtrinsicLockCounter.java new file mode 100644 index 0000000000..8ab431fbc3 --- /dev/null +++ b/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/services/ExtrinsicLockCounter.java @@ -0,0 +1,23 @@ +package com.baeldung.concurrent.threadsafety.services; + +public class ExtrinsicLockCounter { + + private int counter; + private final Object lock = new Object(); + + public ExtrinsicLockCounter() { + this.counter = 0; + } + + public void incrementCounter() { + synchronized (lock) { + counter += 1; + } + } + + public int getCounter() { + synchronized (lock) { + return counter; + } + } +} diff --git a/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/services/MessageService.java b/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/services/MessageService.java new file mode 100644 index 0000000000..33981381ea --- /dev/null +++ b/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/services/MessageService.java @@ -0,0 +1,14 @@ +package com.baeldung.concurrent.threadsafety.services; + +public class MessageService { + + private final String message; + + public MessageService(String message) { + this.message = message; + } + + public String getMesssage() { + return message; + } +} diff --git a/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/services/ReentrantLockCounter.java b/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/services/ReentrantLockCounter.java new file mode 100644 index 0000000000..717f0717af --- /dev/null +++ b/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/services/ReentrantLockCounter.java @@ -0,0 +1,26 @@ +package com.baeldung.concurrent.threadsafety.services; + +import java.util.concurrent.locks.ReentrantLock; + +public class ReentrantLockCounter { + + private int counter; + private final ReentrantLock reLock = new ReentrantLock(true); + + public ReentrantLockCounter() { + this.counter = 0; + } + + public void incrementCounter() { + reLock.lock(); + try { + counter += 1; + } finally { + reLock.unlock(); + } + } + + public int getCounter() { + return counter; + } +} diff --git a/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/services/ReentrantReadWriteLockCounter.java b/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/services/ReentrantReadWriteLockCounter.java new file mode 100644 index 0000000000..f740c938b1 --- /dev/null +++ b/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/services/ReentrantReadWriteLockCounter.java @@ -0,0 +1,34 @@ +package com.baeldung.concurrent.threadsafety.services; + +import java.util.concurrent.locks.Lock; +import java.util.concurrent.locks.ReentrantReadWriteLock; + +public class ReentrantReadWriteLockCounter { + + private int counter; + private final ReentrantReadWriteLock rwLock = new ReentrantReadWriteLock(); + private final Lock readLock = rwLock.readLock(); + private final Lock writeLock = rwLock.writeLock(); + + public ReentrantReadWriteLockCounter() { + this.counter = 0; + } + + public void incrementCounter() { + writeLock.lock(); + try { + counter += 1; + } finally { + writeLock.unlock(); + } + } + + public int getCounter() { + readLock.lock(); + try { + return counter; + } finally { + readLock.unlock(); + } + } +} diff --git a/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/services/StateHolder.java b/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/services/StateHolder.java new file mode 100644 index 0000000000..5bbff9f39c --- /dev/null +++ b/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/threadsafety/services/StateHolder.java @@ -0,0 +1,14 @@ +package com.baeldung.concurrent.threadsafety.services; + +public class StateHolder { + + private final String state; + + public StateHolder(String state) { + this.state = state; + } + + public String getState() { + return state; + } +} diff --git a/core-java-concurrency-basic/src/test/com/baeldung/concurrent/threadsafety/tests/CounterTest.java b/core-java-concurrency-basic/src/test/com/baeldung/concurrent/threadsafety/tests/CounterTest.java new file mode 100644 index 0000000000..3abbb1bdad --- /dev/null +++ b/core-java-concurrency-basic/src/test/com/baeldung/concurrent/threadsafety/tests/CounterTest.java @@ -0,0 +1,23 @@ +package com.baeldung.concurrent.threadsafety.tests; + +import org.junit.Test; +import static org.assertj.core.api.Assertions.assertThat; +import com.baeldung.concurrent.threadsafety.callables.CounterCallable; +import com.baeldung.concurrent.threadsafety.services.Counter; +import java.util.concurrent.ExecutorService; +import java.util.concurrent.Executors; +import java.util.concurrent.Future; + +public class CounterTest { + + @Test + public void whenCalledIncrementCounter_thenCorrect() throws Exception { + ExecutorService executorService = Executors.newFixedThreadPool(2); + Counter counter = new Counter(); + Future future1 = (Future) executorService.submit(new CounterCallable(counter)); + Future future2 = (Future) executorService.submit(new CounterCallable(counter)); + + assertThat(future1.get()).isEqualTo(1); + assertThat(future2.get()).isEqualTo(2); + } +} diff --git a/core-java-concurrency-basic/src/test/com/baeldung/concurrent/threadsafety/tests/ExtrinsicLockCounterTest.java b/core-java-concurrency-basic/src/test/com/baeldung/concurrent/threadsafety/tests/ExtrinsicLockCounterTest.java new file mode 100644 index 0000000000..dba90f5b74 --- /dev/null +++ b/core-java-concurrency-basic/src/test/com/baeldung/concurrent/threadsafety/tests/ExtrinsicLockCounterTest.java @@ -0,0 +1,23 @@ +package com.baeldung.concurrent.threadsafety.tests; + +import org.junit.Test; +import static org.assertj.core.api.Assertions.assertThat; +import com.baeldung.concurrent.threadsafety.callables.ExtrinsicLockCounterCallable; +import com.baeldung.concurrent.threadsafety.services.ExtrinsicLockCounter; +import java.util.concurrent.ExecutorService; +import java.util.concurrent.Executors; +import java.util.concurrent.Future; + +public class ExtrinsicLockCounterTest { + + @Test + public void whenCalledIncrementCounter_thenCorrect() throws Exception { + ExecutorService executorService = Executors.newFixedThreadPool(2); + ExtrinsicLockCounter counter = new ExtrinsicLockCounter(); + Future future1 = (Future) executorService.submit(new ExtrinsicLockCounterCallable(counter)); + Future future2 = (Future) executorService.submit(new ExtrinsicLockCounterCallable(counter)); + + assertThat(future1.get()).isEqualTo(1); + assertThat(future2.get()).isEqualTo(2); + } +} diff --git a/core-java-concurrency-basic/src/test/com/baeldung/concurrent/threadsafety/tests/MathUtilsTest.java b/core-java-concurrency-basic/src/test/com/baeldung/concurrent/threadsafety/tests/MathUtilsTest.java new file mode 100644 index 0000000000..8f3f574b03 --- /dev/null +++ b/core-java-concurrency-basic/src/test/com/baeldung/concurrent/threadsafety/tests/MathUtilsTest.java @@ -0,0 +1,13 @@ +package com.baeldung.concurrent.threadsafety.tests; + +import com.baeldung.concurrent.threadsafety.mathutils.MathUtils; +import org.junit.Test; +import static org.assertj.core.api.Assertions.assertThat; + +public class MathUtilsTest { + + @Test + public void whenCalledFactorialMethod_thenCorrect() { + assertThat(MathUtils.factorial(2)).isEqualTo(2); + } +} diff --git a/core-java-concurrency-basic/src/test/com/baeldung/concurrent/threadsafety/tests/MessageServiceTest.java b/core-java-concurrency-basic/src/test/com/baeldung/concurrent/threadsafety/tests/MessageServiceTest.java new file mode 100644 index 0000000000..8f1f1a8754 --- /dev/null +++ b/core-java-concurrency-basic/src/test/com/baeldung/concurrent/threadsafety/tests/MessageServiceTest.java @@ -0,0 +1,23 @@ +package com.baeldung.concurrent.threadsafety.tests; + +import org.junit.Test; +import static org.assertj.core.api.Assertions.assertThat; +import com.baeldung.concurrent.threadsafety.callables.MessageServiceCallable; +import com.baeldung.concurrent.threadsafety.services.MessageService; +import java.util.concurrent.ExecutorService; +import java.util.concurrent.Executors; +import java.util.concurrent.Future; + +public class MessageServiceTest { + + @Test + public void whenCalledgetMessage_thenCorrect() throws Exception { + ExecutorService executorService = Executors.newFixedThreadPool(2); + MessageService messageService = new MessageService("Welcome to Baeldung!"); + Future future1 = (Future) executorService.submit(new MessageServiceCallable(messageService)); + Future future2 = (Future) executorService.submit(new MessageServiceCallable(messageService)); + + assertThat(future1.get()).isEqualTo("Welcome to Baeldung!"); + assertThat(future2.get()).isEqualTo("Welcome to Baeldung!"); + } +} diff --git a/core-java-concurrency-basic/src/test/com/baeldung/concurrent/threadsafety/tests/ReentrantLockCounterTest.java b/core-java-concurrency-basic/src/test/com/baeldung/concurrent/threadsafety/tests/ReentrantLockCounterTest.java new file mode 100644 index 0000000000..05c721ab26 --- /dev/null +++ b/core-java-concurrency-basic/src/test/com/baeldung/concurrent/threadsafety/tests/ReentrantLockCounterTest.java @@ -0,0 +1,23 @@ +package com.baeldung.concurrent.threadsafety.tests; + +import com.baeldung.concurrent.threadsafety.callables.ReentrantLockCounterCallable; +import com.baeldung.concurrent.threadsafety.services.ReentrantLockCounter; +import java.util.concurrent.ExecutorService; +import java.util.concurrent.Executors; +import java.util.concurrent.Future; +import static org.assertj.core.api.Assertions.assertThat; +import org.junit.Test; + +public class ReentrantLockCounterTest { + + @Test + public void whenCalledIncrementCounter_thenCorrect() throws Exception { + ExecutorService executorService = Executors.newFixedThreadPool(2); + ReentrantLockCounter counter = new ReentrantLockCounter(); + Future future1 = (Future) executorService.submit(new ReentrantLockCounterCallable(counter)); + Future future2 = (Future) executorService.submit(new ReentrantLockCounterCallable(counter)); + + assertThat(future1.get()).isEqualTo(1); + assertThat(future2.get()).isEqualTo(2); + } +} diff --git a/core-java-concurrency-basic/src/test/com/baeldung/concurrent/threadsafety/tests/ReentrantReadWriteLockCounterTest.java b/core-java-concurrency-basic/src/test/com/baeldung/concurrent/threadsafety/tests/ReentrantReadWriteLockCounterTest.java new file mode 100644 index 0000000000..c56137ce04 --- /dev/null +++ b/core-java-concurrency-basic/src/test/com/baeldung/concurrent/threadsafety/tests/ReentrantReadWriteLockCounterTest.java @@ -0,0 +1,24 @@ +package com.baeldung.concurrent.threadsafety.tests; + +import com.baeldung.concurrent.threadsafety.callables.ReentranReadWriteLockCounterCallable; +import com.baeldung.concurrent.threadsafety.services.ReentrantReadWriteLockCounter; +import java.util.concurrent.ExecutorService; +import java.util.concurrent.Executors; +import java.util.concurrent.Future; +import static org.assertj.core.api.Assertions.assertThat; +import org.junit.Test; + +public class ReentrantReadWriteLockCounterTest { + + @Test + public void whenCalledIncrementCounter_thenCorrect() throws Exception { + ExecutorService executorService = Executors.newFixedThreadPool(2); + ReentrantReadWriteLockCounter counter = new ReentrantReadWriteLockCounter(); + Future future1 = (Future) executorService.submit(new ReentranReadWriteLockCounterCallable(counter)); + Future future2 = (Future) executorService.submit(new ReentranReadWriteLockCounterCallable(counter)); + + assertThat(future1.get()).isEqualTo(1); + assertThat(future2.get()).isEqualTo(2); + } + +} diff --git a/core-java-io/README.md b/core-java-io/README.md index 3d028783ed..2ad980ca6a 100644 --- a/core-java-io/README.md +++ b/core-java-io/README.md @@ -35,3 +35,5 @@ - [Guide to Java OutputStream](https://www.baeldung.com/java-outputstream) - [Reading a CSV File into an Array](https://www.baeldung.com/java-csv-file-array) - [Guide to BufferedReader](https://www.baeldung.com/java-buffered-reader) +- [How to Get the File Extension of a File in Java](http://www.baeldung.com/java-file-extension) +- [Getting a File’s Mime Type in Java](http://www.baeldung.com/java-file-mime-type) \ No newline at end of file diff --git a/core-java-io/pom.xml b/core-java-io/pom.xml index ac5f1f7c2e..1f2d52de81 100644 --- a/core-java-io/pom.xml +++ b/core-java-io/pom.xml @@ -160,6 +160,17 @@ ${opencsv.version} test + + + org.apache.tika + tika-core + ${tika.version} + + + net.sf.jmimemagic + jmimemagic + ${jmime-magic.version} + @@ -264,6 +275,9 @@ 2.1.0.1 1.19 2.4.5 + + 1.18 + 0.1.5 \ No newline at end of file diff --git a/core-java-io/src/main/java/com/baeldung/csv/WriteCsvFileExample.java b/core-java-io/src/main/java/com/baeldung/csv/WriteCsvFileExample.java new file mode 100644 index 0000000000..e1237481b1 --- /dev/null +++ b/core-java-io/src/main/java/com/baeldung/csv/WriteCsvFileExample.java @@ -0,0 +1,26 @@ +package com.baeldung.csv; + +public class WriteCsvFileExample { + + public String convertToCSV(String[] data) { + StringBuilder csvLine = new StringBuilder(); + + for (int i = 0; i < data.length; i++) { + if (i > 0) { + csvLine.append(","); + } + csvLine.append(escapeSpecialCharacters(data[i])); + } + + return csvLine.toString(); + } + + public String escapeSpecialCharacters(String data) { + String escapedData = data.replaceAll("\\R", " "); + if (data.contains(",") || data.contains("\"") || data.contains("'")) { + data = data.replace("\"", "\"\""); + escapedData = "\"" + data + "\""; + } + return escapedData; + } +} diff --git a/core-java/src/main/java/com/baeldung/extension/Extension.java b/core-java-io/src/main/java/com/baeldung/extension/Extension.java similarity index 100% rename from core-java/src/main/java/com/baeldung/extension/Extension.java rename to core-java-io/src/main/java/com/baeldung/extension/Extension.java diff --git a/core-java-io/src/test/java/com/baeldung/csv/WriteCsvFileExampleUnitTest.java b/core-java-io/src/test/java/com/baeldung/csv/WriteCsvFileExampleUnitTest.java new file mode 100644 index 0000000000..e30ec0818c --- /dev/null +++ b/core-java-io/src/test/java/com/baeldung/csv/WriteCsvFileExampleUnitTest.java @@ -0,0 +1,84 @@ +package com.baeldung.csv; + +import static org.junit.Assert.assertEquals; +import static org.junit.Assert.assertTrue; + +import java.io.File; +import java.io.FileNotFoundException; +import java.io.PrintWriter; +import java.util.ArrayList; +import java.util.List; + +import org.junit.Before; +import org.junit.Test; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +public class WriteCsvFileExampleUnitTest { + private static final Logger LOG = LoggerFactory.getLogger(WriteCsvFileExampleUnitTest.class); + + private static final String CSV_FILE_NAME = "src/test/resources/exampleOutput.csv"; + private WriteCsvFileExample csvExample; + + @Before + public void setupClass() { + csvExample = new WriteCsvFileExample(); + } + + @Test + public void givenCommaContainingData_whenEscapeSpecialCharacters_stringReturnedInQuotes() { + String data = "three,two,one"; + String escapedData = csvExample.escapeSpecialCharacters(data); + + String expectedData = "\"three,two,one\""; + assertEquals(expectedData, escapedData); + } + + @Test + public void givenQuoteContainingData_whenEscapeSpecialCharacters_stringReturnedFormatted() { + String data = "She said \"Hello\""; + String escapedData = csvExample.escapeSpecialCharacters(data); + + String expectedData = "\"She said \"\"Hello\"\"\""; + assertEquals(expectedData, escapedData); + } + + @Test + public void givenNewlineContainingData_whenEscapeSpecialCharacters_stringReturnedInQuotes() { + String dataNewline = "This contains\na newline"; + String dataCarriageReturn = "This contains\r\na newline and carriage return"; + String escapedDataNl = csvExample.escapeSpecialCharacters(dataNewline); + String escapedDataCr = csvExample.escapeSpecialCharacters(dataCarriageReturn); + + String expectedData = "This contains a newline"; + assertEquals(expectedData, escapedDataNl); + String expectedDataCr = "This contains a newline and carriage return"; + assertEquals(expectedDataCr, escapedDataCr); + } + + @Test + public void givenNonSpecialData_whenEscapeSpecialCharacters_stringReturnedUnchanged() { + String data = "This is nothing special"; + String returnedData = csvExample.escapeSpecialCharacters(data); + + assertEquals(data, returnedData); + } + + @Test + public void givenBufferedWriter_whenWriteLine_thenOutputCreated() { + List dataLines = new ArrayList(); + dataLines.add(new String[] { "John", "Doe", "38", "Comment Data\nAnother line of comment data" }); + dataLines.add(new String[] { "Jane", "Doe, Jr.", "19", "She said \"I'm being quoted\"" }); + + File csvOutputFile = new File(CSV_FILE_NAME); + try (PrintWriter pw = new PrintWriter(csvOutputFile)) { + dataLines.stream() + .map(csvExample::convertToCSV) + .forEach(pw::println); + } catch (FileNotFoundException e) { + LOG.error("IOException " + e.getMessage()); + } + + assertTrue(csvOutputFile.exists()); + } +} diff --git a/core-java/src/test/java/com/baeldung/extension/ExtensionUnitTest.java b/core-java-io/src/test/java/com/baeldung/extension/ExtensionUnitTest.java similarity index 100% rename from core-java/src/test/java/com/baeldung/extension/ExtensionUnitTest.java rename to core-java-io/src/test/java/com/baeldung/extension/ExtensionUnitTest.java diff --git a/core-java/src/test/java/com/baeldung/java/mimetype/MimeTypeUnitTest.java b/core-java-io/src/test/java/com/baeldung/java/mimetype/MimeTypeUnitTest.java similarity index 100% rename from core-java/src/test/java/com/baeldung/java/mimetype/MimeTypeUnitTest.java rename to core-java-io/src/test/java/com/baeldung/java/mimetype/MimeTypeUnitTest.java diff --git a/core-java-io/src/test/java/org/baeldung/java/io/InputStreamToByteBufferUnitTest.java b/core-java-io/src/test/java/org/baeldung/java/io/InputStreamToByteBufferUnitTest.java new file mode 100644 index 0000000000..fedadde04b --- /dev/null +++ b/core-java-io/src/test/java/org/baeldung/java/io/InputStreamToByteBufferUnitTest.java @@ -0,0 +1,60 @@ +package org.baeldung.java.io; + + +import com.google.common.io.ByteStreams; +import org.apache.commons.io.IOUtils; +import org.junit.jupiter.api.Test; + +import java.io.File; +import java.io.FileInputStream; +import java.io.IOException; +import java.nio.ByteBuffer; +import java.nio.channels.ReadableByteChannel; + +import static org.junit.jupiter.api.Assertions.assertEquals; + +class InputStreamToByteBufferUnitTest { + + @Test + public void givenUsingCoreClasses_whenWritingAFileIntoAByteBuffer_thenBytesLengthMustMatch() throws IOException { + File inputFile = getFile(); + ByteBuffer bufferByte = ByteBuffer.allocate((int) inputFile.length()); + FileInputStream in = new FileInputStream(inputFile); + in.getChannel().read(bufferByte); + + assertEquals(bufferByte.position(), inputFile.length()); + } + + @Test + public void givenUsingCommonsIo_whenWritingAFileIntoAByteBuffer_thenBytesLengthMustMatch() throws IOException { + File inputFile = getFile(); + ByteBuffer bufferByte = ByteBuffer.allocateDirect((int) inputFile.length()); + ReadableByteChannel readableByteChannel = new FileInputStream(inputFile).getChannel(); + IOUtils.readFully(readableByteChannel, bufferByte); + + assertEquals(bufferByte.position(), inputFile.length()); + } + + @Test + public void givenUsingGuava_whenWritingAFileIntoAByteBuffer_thenBytesLengthMustMatch() throws IOException { + File inputFile = getFile(); + FileInputStream in = new FileInputStream(inputFile); + byte[] targetArray = ByteStreams.toByteArray(in); + ByteBuffer bufferByte = ByteBuffer.wrap(targetArray); + bufferByte.rewind(); + while (bufferByte.hasRemaining()) { + bufferByte.get(); + } + + assertEquals(bufferByte.position(), inputFile.length()); + } + + private File getFile() { + ClassLoader classLoader = new InputStreamToByteBufferUnitTest().getClass().getClassLoader(); + + String fileName = "frontenac-2257154_960_720.jpg"; + + return new File(classLoader.getResource(fileName).getFile()); + } + +} diff --git a/core-java/src/test/resources/META-INF/mime.types b/core-java-io/src/test/resources/META-INF/mime.types similarity index 100% rename from core-java/src/test/resources/META-INF/mime.types rename to core-java-io/src/test/resources/META-INF/mime.types diff --git a/core-java-io/src/test/resources/exampleOutput.csv b/core-java-io/src/test/resources/exampleOutput.csv new file mode 100644 index 0000000000..45c37f3a3b --- /dev/null +++ b/core-java-io/src/test/resources/exampleOutput.csv @@ -0,0 +1,2 @@ +John,Doe,38,Comment Data Another line of comment data +Jane,"Doe, Jr.",19,"She said ""I'm being quoted""" \ No newline at end of file diff --git a/core-java-io/src/test/resources/frontenac-2257154_960_720.jpg b/core-java-io/src/test/resources/frontenac-2257154_960_720.jpg new file mode 100644 index 0000000000..77c459b0e3 Binary files /dev/null and b/core-java-io/src/test/resources/frontenac-2257154_960_720.jpg differ diff --git a/core-java/src/test/resources/product.png b/core-java-io/src/test/resources/product.png similarity index 100% rename from core-java/src/test/resources/product.png rename to core-java-io/src/test/resources/product.png diff --git a/core-java-lang/README.md b/core-java-lang/README.md index 52dfe708a3..7af962558d 100644 --- a/core-java-lang/README.md +++ b/core-java-lang/README.md @@ -33,3 +33,5 @@ - [How to Separate Double into Integer and Decimal Parts](https://www.baeldung.com/java-separate-double-into-integer-decimal-parts) - [“Sneaky Throws” in Java](http://www.baeldung.com/java-sneaky-throws) - [Retrieving a Class Name in Java](https://www.baeldung.com/java-class-name) +- [Java Compound Operators](https://www.baeldung.com/java-compound-operators) +- [Guide to Java Packages](https://www.baeldung.com/java-packages) \ No newline at end of file diff --git a/core-java-lang/src/main/java/com/baeldung/enums/values/Element1.java b/core-java-lang/src/main/java/com/baeldung/enums/values/Element1.java new file mode 100644 index 0000000000..6c80adacb1 --- /dev/null +++ b/core-java-lang/src/main/java/com/baeldung/enums/values/Element1.java @@ -0,0 +1,17 @@ +package com.baeldung.enums.values; + +/** + * This is a simple enum of periodic table elements + */ +public enum Element1 { + H, + HE, + LI, + BE, + B, + C, + N, + O, + F, + NE +} diff --git a/core-java-lang/src/main/java/com/baeldung/enums/values/Element2.java b/core-java-lang/src/main/java/com/baeldung/enums/values/Element2.java new file mode 100644 index 0000000000..28bf3a475a --- /dev/null +++ b/core-java-lang/src/main/java/com/baeldung/enums/values/Element2.java @@ -0,0 +1,52 @@ +package com.baeldung.enums.values; + +/** + * The simple enum has been enhanced to add the name of the element. + */ +public enum Element2 { + H("Hydrogen"), + HE("Helium"), + LI("Lithium"), + BE("Beryllium"), + B("Boron"), + C("Carbon"), + N("Nitrogen"), + O("Oxygen"), + F("Flourine"), + NE("Neon"); + + /** a final variable to store the label, which can't be changed */ + public final String label; + + /** + * A private constructor that sets the label. + * @param label + */ + private Element2(String label) { + this.label = label; + } + + /** + * Look up Element2 instances by the label field. This implementation iterates through + * the values() list to find the label. + * @param label The label to look up + * @return The Element2 instance with the label, or null if not found. + */ + public static Element2 valueOfLabel(String label) { + for (Element2 e2 : values()) { + if (e2.label.equals(label)) { + return e2; + } + } + return null; + } + + /** + * Override the toString() method to return the label instead of the declared name. + * @return + */ + @Override + public String toString() { + return this.label; + } +} diff --git a/core-java-lang/src/main/java/com/baeldung/enums/values/Element3.java b/core-java-lang/src/main/java/com/baeldung/enums/values/Element3.java new file mode 100644 index 0000000000..cb98695de8 --- /dev/null +++ b/core-java-lang/src/main/java/com/baeldung/enums/values/Element3.java @@ -0,0 +1,63 @@ +package com.baeldung.enums.values; + +import java.util.HashMap; +import java.util.Map; + +/** + * A Map has been added to cache labels for faster lookup. + */ +public enum Element3 { + H("Hydrogen"), + HE("Helium"), + LI("Lithium"), + BE("Beryllium"), + B("Boron"), + C("Carbon"), + N("Nitrogen"), + O("Oxygen"), + F("Flourine"), + NE("Neon"); + + /** + * A map to cache labels and their associated Element3 instances. + * Note that this only works if the labels are all unique! + */ + private static final Map BY_LABEL = new HashMap<>(); + + /** populate the BY_LABEL cache */ + static { + for (Element3 e3 : values()) { + BY_LABEL.put(e3.label, e3); + } + } + + /** a final variable to store the label, which can't be changed */ + public final String label; + + /** + * A private constructor that sets the label. + * @param label + */ + private Element3(String label) { + this.label = label; + } + + /** + * Look up Element2 instances by the label field. This implementation finds the + * label in the BY_LABEL cache. + * @param label The label to look up + * @return The Element3 instance with the label, or null if not found. + */ + public static Element3 valueOfLabel(String label) { + return BY_LABEL.get(label); + } + + /** + * Override the toString() method to return the label instead of the declared name. + * @return + */ + @Override + public String toString() { + return this.label; + } +} diff --git a/core-java-lang/src/main/java/com/baeldung/enums/values/Element4.java b/core-java-lang/src/main/java/com/baeldung/enums/values/Element4.java new file mode 100644 index 0000000000..89c45f9d1b --- /dev/null +++ b/core-java-lang/src/main/java/com/baeldung/enums/values/Element4.java @@ -0,0 +1,95 @@ +package com.baeldung.enums.values; + +import java.util.HashMap; +import java.util.Map; + +/** + * Multiple fields have been added and the Labeled interface is implemented. + */ +public enum Element4 implements Labeled { + H("Hydrogen", 1, 1.008f), + HE("Helium", 2, 4.0026f), + LI("Lithium", 3, 6.94f), + BE("Beryllium", 4, 9.01722f), + B("Boron", 5, 10.81f), + C("Carbon", 6, 12.011f), + N("Nitrogen", 7, 14.007f), + O("Oxygen", 8, 15.999f), + F("Flourine", 9, 18.998f), + NE("Neon", 10, 20.180f); + /** + * Maps cache labels and their associated Element3 instances. + * Note that this only works if the values are all unique! + */ + private static final Map BY_LABEL = new HashMap<>(); + private static final Map BY_ATOMIC_NUMBER = new HashMap<>(); + private static final Map BY_ATOMIC_WEIGHT = new HashMap<>(); + + /** populate the caches */ + static { + for (Element4 e4 : values()) { + BY_LABEL.put(e4.label, e4); + BY_ATOMIC_NUMBER.put(e4.atomicNumber, e4); + BY_ATOMIC_WEIGHT.put(e4.atomicWeight, e4); + } + } + + /** final variables to store the values, which can't be changed */ + public final String label; + public final int atomicNumber; + public final float atomicWeight; + + private Element4(String label, int atomicNumber, float atomicWeight) { + this.label = label; + this.atomicNumber = atomicNumber; + this.atomicWeight = atomicWeight; + } + + /** + * Implement the Labeled interface. + * @return the label value + */ + @Override + public String label() { + return label; + } + + /** + * Look up Element2 instances by the label field. This implementation finds the + * label in the BY_LABEL cache. + * @param label The label to look up + * @return The Element4 instance with the label, or null if not found. + */ + public static Element4 valueOfLabel(String label) { + return BY_LABEL.get(label); + } + + /** + * Look up Element2 instances by the atomicNumber field. This implementation finds the + * atomicNUmber in the cache. + * @param number The atomicNumber to look up + * @return The Element4 instance with the label, or null if not found. + */ + public static Element4 valueOfAtomicNumber(int number) { + return BY_ATOMIC_NUMBER.get(number); + } + + /** + * Look up Element2 instances by the atomicWeight field. This implementation finds the + * atomic weight in the cache. + * @param weight the atomic weight to look up + * @return The Element4 instance with the label, or null if not found. + */ + public static Element4 valueOfAtomicWeight(float weight) { + return BY_ATOMIC_WEIGHT.get(weight); + } + + /** + * Override the toString() method to return the label instead of the declared name. + * @return + */ + @Override + public String toString() { + return this.label; + } +} diff --git a/core-java-lang/src/main/java/com/baeldung/enums/values/Labeled.java b/core-java-lang/src/main/java/com/baeldung/enums/values/Labeled.java new file mode 100644 index 0000000000..e41d6525f1 --- /dev/null +++ b/core-java-lang/src/main/java/com/baeldung/enums/values/Labeled.java @@ -0,0 +1,5 @@ +package com.baeldung.enums.values; + +public interface Labeled { + String label(); +} diff --git a/core-java-lang/src/main/java/com/baeldung/interfaces/Box.java b/core-java-lang/src/main/java/com/baeldung/interfaces/Box.java new file mode 100644 index 0000000000..0bb6560465 --- /dev/null +++ b/core-java-lang/src/main/java/com/baeldung/interfaces/Box.java @@ -0,0 +1,5 @@ +package com.baeldung.interfaces; + +public interface Box extends HasColor { + int getHeight(); +} diff --git a/core-java-8/src/main/java/com/baeldung/interfaces/Employee.java b/core-java-lang/src/main/java/com/baeldung/interfaces/Employee.java similarity index 99% rename from core-java-8/src/main/java/com/baeldung/interfaces/Employee.java rename to core-java-lang/src/main/java/com/baeldung/interfaces/Employee.java index 903bc81e6f..8c6bd3f7f3 100644 --- a/core-java-8/src/main/java/com/baeldung/interfaces/Employee.java +++ b/core-java-lang/src/main/java/com/baeldung/interfaces/Employee.java @@ -11,5 +11,4 @@ public class Employee { public void setSalary(double salary) { this.salary = salary; } - } diff --git a/core-java-8/src/main/java/com/baeldung/interfaces/EmployeeSalaryComparator.java b/core-java-lang/src/main/java/com/baeldung/interfaces/EmployeeSalaryComparator.java similarity index 67% rename from core-java-8/src/main/java/com/baeldung/interfaces/EmployeeSalaryComparator.java rename to core-java-lang/src/main/java/com/baeldung/interfaces/EmployeeSalaryComparator.java index cfa4226c1a..5c841b7c2b 100644 --- a/core-java-8/src/main/java/com/baeldung/interfaces/EmployeeSalaryComparator.java +++ b/core-java-lang/src/main/java/com/baeldung/interfaces/EmployeeSalaryComparator.java @@ -6,12 +6,11 @@ public class EmployeeSalaryComparator implements Comparator { @Override public int compare(Employee employeeA, Employee employeeB) { - - if(employeeA.getSalary() < employeeB.getSalary()){ + if (employeeA.getSalary() < employeeB.getSalary()) { return -1; - }else if(employeeA.getSalary() > employeeB.getSalary()){ + } else if (employeeA.getSalary() > employeeB.getSalary()) { return 1; - }else{ + } else { return 0; } } diff --git a/core-java-8/src/main/java/com/baeldung/interfaces/HasColor.java b/core-java-lang/src/main/java/com/baeldung/interfaces/HasColor.java similarity index 66% rename from core-java-8/src/main/java/com/baeldung/interfaces/HasColor.java rename to core-java-lang/src/main/java/com/baeldung/interfaces/HasColor.java index 6eface2d47..d9688ea866 100644 --- a/core-java-8/src/main/java/com/baeldung/interfaces/HasColor.java +++ b/core-java-lang/src/main/java/com/baeldung/interfaces/HasColor.java @@ -1,5 +1,4 @@ package com.baeldung.interfaces; public interface HasColor { - public String getColor(); -} \ No newline at end of file +} diff --git a/core-java-8/src/main/java/com/baeldung/interfaces/multiinheritance/Car.java b/core-java-lang/src/main/java/com/baeldung/interfaces/multiinheritance/Car.java similarity index 84% rename from core-java-8/src/main/java/com/baeldung/interfaces/multiinheritance/Car.java rename to core-java-lang/src/main/java/com/baeldung/interfaces/multiinheritance/Car.java index b951fc0273..d9b30a1e7b 100644 --- a/core-java-8/src/main/java/com/baeldung/interfaces/multiinheritance/Car.java +++ b/core-java-lang/src/main/java/com/baeldung/interfaces/multiinheritance/Car.java @@ -1,6 +1,7 @@ package com.baeldung.interfaces.multiinheritance; -public class Car implements Fly, Transform { +public class Car implements Fly,Transform { + @Override public void fly() { System.out.println("I can Fly!!"); diff --git a/core-java-8/src/main/java/com/baeldung/interfaces/multiinheritance/Fly.java b/core-java-lang/src/main/java/com/baeldung/interfaces/multiinheritance/Fly.java similarity index 69% rename from core-java-8/src/main/java/com/baeldung/interfaces/multiinheritance/Fly.java rename to core-java-lang/src/main/java/com/baeldung/interfaces/multiinheritance/Fly.java index d84182aec6..611e51c67b 100644 --- a/core-java-8/src/main/java/com/baeldung/interfaces/multiinheritance/Fly.java +++ b/core-java-lang/src/main/java/com/baeldung/interfaces/multiinheritance/Fly.java @@ -1,5 +1,6 @@ package com.baeldung.interfaces.multiinheritance; -public abstract interface Fly{ +public interface Fly { + void fly(); } diff --git a/core-java-8/src/main/java/com/baeldung/interfaces/multiinheritance/Transform.java b/core-java-lang/src/main/java/com/baeldung/interfaces/multiinheritance/Transform.java similarity index 100% rename from core-java-8/src/main/java/com/baeldung/interfaces/multiinheritance/Transform.java rename to core-java-lang/src/main/java/com/baeldung/interfaces/multiinheritance/Transform.java diff --git a/core-java-lang/src/main/java/com/baeldung/interfaces/multiinheritance/Vehicle.java b/core-java-lang/src/main/java/com/baeldung/interfaces/multiinheritance/Vehicle.java new file mode 100644 index 0000000000..be25e112ee --- /dev/null +++ b/core-java-lang/src/main/java/com/baeldung/interfaces/multiinheritance/Vehicle.java @@ -0,0 +1,4 @@ +package com.baeldung.interfaces.multiinheritance; + +public abstract class Vehicle implements Transform { +} diff --git a/core-java-lang/src/main/java/com/baeldung/interfaces/polymorphysim/Circle.java b/core-java-lang/src/main/java/com/baeldung/interfaces/polymorphysim/Circle.java new file mode 100644 index 0000000000..b4d97bd53a --- /dev/null +++ b/core-java-lang/src/main/java/com/baeldung/interfaces/polymorphysim/Circle.java @@ -0,0 +1,9 @@ +package com.baeldung.interfaces.polymorphysim; + +public class Circle implements Shape { + + @Override + public String name() { + return "Circle"; + } +} diff --git a/core-java-lang/src/main/java/com/baeldung/interfaces/polymorphysim/MainTestClass.java b/core-java-lang/src/main/java/com/baeldung/interfaces/polymorphysim/MainTestClass.java new file mode 100644 index 0000000000..5cce3c3af0 --- /dev/null +++ b/core-java-lang/src/main/java/com/baeldung/interfaces/polymorphysim/MainTestClass.java @@ -0,0 +1,20 @@ +package com.baeldung.interfaces.polymorphysim; + +import java.util.ArrayList; +import java.util.List; + +public class MainTestClass { + + public static void main(String[] args) { + List shapes = new ArrayList<>(); + Shape circleShape = new Circle(); + Shape squareShape = new Square(); + + shapes.add(circleShape); + shapes.add(squareShape); + + for (Shape shape : shapes) { + System.out.println(shape.name()); + } + } +} diff --git a/core-java-lang/src/main/java/com/baeldung/interfaces/polymorphysim/Shape.java b/core-java-lang/src/main/java/com/baeldung/interfaces/polymorphysim/Shape.java new file mode 100644 index 0000000000..885dc73de2 --- /dev/null +++ b/core-java-lang/src/main/java/com/baeldung/interfaces/polymorphysim/Shape.java @@ -0,0 +1,6 @@ +package com.baeldung.interfaces.polymorphysim; + +public interface Shape { + + String name(); +} diff --git a/core-java-lang/src/main/java/com/baeldung/interfaces/polymorphysim/Square.java b/core-java-lang/src/main/java/com/baeldung/interfaces/polymorphysim/Square.java new file mode 100644 index 0000000000..c17bdd902d --- /dev/null +++ b/core-java-lang/src/main/java/com/baeldung/interfaces/polymorphysim/Square.java @@ -0,0 +1,9 @@ +package com.baeldung.interfaces.polymorphysim; + +public class Square implements Shape { + + @Override + public String name() { + return "Square"; + } +} diff --git a/core-java-lang/src/test/java/com/baeldung/enums/values/Element1UnitTest.java b/core-java-lang/src/test/java/com/baeldung/enums/values/Element1UnitTest.java new file mode 100644 index 0000000000..ab3e684230 --- /dev/null +++ b/core-java-lang/src/test/java/com/baeldung/enums/values/Element1UnitTest.java @@ -0,0 +1,48 @@ +package com.baeldung.enums.values; + +import org.junit.After; +import org.junit.AfterClass; +import org.junit.Before; +import org.junit.BeforeClass; +import org.junit.Test; +import static org.junit.Assert.*; + +/** + * + * @author chris + */ +public class Element1UnitTest { + + public Element1UnitTest() { + } + + @BeforeClass + public static void setUpClass() { + } + + @AfterClass + public static void tearDownClass() { + } + + @Before + public void setUp() { + } + + @After + public void tearDown() { + } + + @Test + public void whenAccessingToString_thenItShouldEqualName() { + for (Element1 e1 : Element1.values()) { + assertEquals(e1.name(), e1.toString()); + } + } + + @Test + public void whenCallingValueOf_thenReturnTheCorrectEnum() { + for (Element1 e1 : Element1.values()) { + assertSame(e1, Element1.valueOf(e1.name())); + } + } +} diff --git a/core-java-lang/src/test/java/com/baeldung/enums/values/Element2UnitTest.java b/core-java-lang/src/test/java/com/baeldung/enums/values/Element2UnitTest.java new file mode 100644 index 0000000000..02995a2f41 --- /dev/null +++ b/core-java-lang/src/test/java/com/baeldung/enums/values/Element2UnitTest.java @@ -0,0 +1,59 @@ +/* + * To change this license header, choose License Headers in Project Properties. + * To change this template file, choose Tools | Templates + * and open the template in the editor. + */ +package com.baeldung.enums.values; + +import org.junit.After; +import org.junit.AfterClass; +import org.junit.Before; +import org.junit.BeforeClass; +import org.junit.Test; +import static org.junit.Assert.*; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +/** + * + * @author chris + */ +public class Element2UnitTest { + private static final Logger LOGGER = LoggerFactory.getLogger(Element2UnitTest.class); + + public Element2UnitTest() { + } + + @BeforeClass + public static void setUpClass() { + } + + @AfterClass + public static void tearDownClass() { + } + + @Before + public void setUp() { + } + + @After + public void tearDown() { + } + + @Test + public void whenLocatebyLabel_thenReturnCorrectValue() { + for (Element2 e2 : Element2.values()) { + assertSame(e2, Element2.valueOfLabel(e2.label)); + } + } + + /** + * Test of toString method, of class Element2. + */ + @Test + public void whenCallingToString_thenReturnLabel() { + for (Element2 e2 : Element2.values()) { + assertEquals(e2.label, e2.toString()); + } + } +} diff --git a/core-java-lang/src/test/java/com/baeldung/enums/values/Element3UnitTest.java b/core-java-lang/src/test/java/com/baeldung/enums/values/Element3UnitTest.java new file mode 100644 index 0000000000..40c76a97b1 --- /dev/null +++ b/core-java-lang/src/test/java/com/baeldung/enums/values/Element3UnitTest.java @@ -0,0 +1,57 @@ +/* + * To change this license header, choose License Headers in Project Properties. + * To change this template file, choose Tools | Templates + * and open the template in the editor. + */ +package com.baeldung.enums.values; + +import org.junit.After; +import org.junit.AfterClass; +import org.junit.Before; +import org.junit.BeforeClass; +import org.junit.Test; +import static org.junit.Assert.*; + +/** + * + * @author chris + */ +public class Element3UnitTest { + + public Element3UnitTest() { + } + + @BeforeClass + public static void setUpClass() { + } + + @AfterClass + public static void tearDownClass() { + } + + @Before + public void setUp() { + } + + @After + public void tearDown() { + } + + @Test + public void whenLocatebyLabel_thenReturnCorrectValue() { + for (Element3 e3 : Element3.values()) { + assertSame(e3, Element3.valueOfLabel(e3.label)); + } + } + + /** + * Test of toString method, of class Element3. + */ + @Test + public void whenCallingToString_thenReturnLabel() { + for (Element3 e3 : Element3.values()) { + assertEquals(e3.label, e3.toString()); + } + } + +} diff --git a/core-java-lang/src/test/java/com/baeldung/enums/values/Element4UnitTest.java b/core-java-lang/src/test/java/com/baeldung/enums/values/Element4UnitTest.java new file mode 100644 index 0000000000..d349dcef72 --- /dev/null +++ b/core-java-lang/src/test/java/com/baeldung/enums/values/Element4UnitTest.java @@ -0,0 +1,71 @@ +/* + * To change this license header, choose License Headers in Project Properties. + * To change this template file, choose Tools | Templates + * and open the template in the editor. + */ +package com.baeldung.enums.values; + +import org.junit.After; +import org.junit.AfterClass; +import org.junit.Before; +import org.junit.BeforeClass; +import org.junit.Test; +import static org.junit.Assert.*; + +/** + * + * @author chris + */ +public class Element4UnitTest { + + public Element4UnitTest() { + } + + @BeforeClass + public static void setUpClass() { + } + + @AfterClass + public static void tearDownClass() { + } + + @Before + public void setUp() { + } + + @After + public void tearDown() { + } + + @Test + public void whenLocatebyLabel_thenReturnCorrectValue() { + for (Element4 e4 : Element4.values()) { + assertSame(e4, Element4.valueOfLabel(e4.label)); + } + } + + @Test + public void whenLocatebyAtmNum_thenReturnCorrectValue() { + for (Element4 e4 : Element4.values()) { + assertSame(e4, Element4.valueOfAtomicNumber(e4.atomicNumber)); + } + } + + @Test + public void whenLocatebyAtmWt_thenReturnCorrectValue() { + for (Element4 e4 : Element4.values()) { + assertSame(e4, Element4.valueOfAtomicWeight(e4.atomicWeight)); + } + } + + /** + * Test of toString method, of class Element4. + */ + @Test + public void whenCallingToString_thenReturnLabel() { + for (Element4 e4 : Element4.values()) { + assertEquals(e4.label, e4.toString()); + } + } + +} diff --git a/core-java-perf/src/main/java/com/baeldung/flightrecorder/FlightRecorder.java b/core-java-perf/src/main/java/com/baeldung/flightrecorder/FlightRecorder.java new file mode 100644 index 0000000000..02c3e96124 --- /dev/null +++ b/core-java-perf/src/main/java/com/baeldung/flightrecorder/FlightRecorder.java @@ -0,0 +1,32 @@ +package com.baeldung.flightrecorder; + +import java.util.ArrayList; +import java.util.List; + +/** + * Simple program that illustrates how to use Java Flight Recorder. + * + * This programs creates a list, inserts objects in it until + * an OutOfMemoryError is thrown. + * + */ +public class FlightRecorder { + + public static void main(String[] args) { + List items = new ArrayList<>(1); + try { + while (true) { + items.add(new Object()); + } + } catch (OutOfMemoryError e) { + System.out.println(e.getMessage()); + } + assert items.size() > 0; + try { + Thread.sleep(1000); + } catch (InterruptedException e) { + System.out.println(e.getMessage()); + } + } + +} diff --git a/core-java-security/README.md b/core-java-security/README.md new file mode 100644 index 0000000000..415171094b --- /dev/null +++ b/core-java-security/README.md @@ -0,0 +1,11 @@ +## Core Java Security + +### Relevant Articles: +- [MD5 Hashing in Java](http://www.baeldung.com/java-md5) +- [Guide to the Cipher Class](http://www.baeldung.com/java-cipher-class) +- [Introduction to SSL in Java](http://www.baeldung.com/java-ssl) +- [Java KeyStore API](http://www.baeldung.com/java-keystore) +- [Encrypting and Decrypting Files in Java](http://www.baeldung.com/java-cipher-input-output-stream) +- [Hashing a Password in Java](https://www.baeldung.com/java-password-hashing) +- [SSL Handshake Failures](https://www.baeldung.com/java-ssl-handshake-failures) +- [SHA-256 Hashing in Java](https://www.baeldung.com/sha-256-hashing-java) \ No newline at end of file diff --git a/core-java-security/pom.xml b/core-java-security/pom.xml new file mode 100644 index 0000000000..cf91121465 --- /dev/null +++ b/core-java-security/pom.xml @@ -0,0 +1,55 @@ + + 4.0.0 + com.baeldung + core-java-security + 0.1.0-SNAPSHOT + jar + core-java-security + + + com.baeldung + parent-java + 0.0.1-SNAPSHOT + ../parent-java + + + + + org.apache.commons + commons-lang3 + ${commons-lang3.version} + + + + org.assertj + assertj-core + ${assertj-core.version} + test + + + + commons-codec + commons-codec + ${commons-codec.version} + + + org.bouncycastle + bcprov-jdk15on + ${bouncycastle.version} + + + + + + + 3.8.1 + 1.55 + 1.10 + + + 3.10.0 + + + + diff --git a/core-java/src/main/java/com/baeldung/cipher/Encryptor.java b/core-java-security/src/main/java/com/baeldung/cipher/Encryptor.java similarity index 100% rename from core-java/src/main/java/com/baeldung/cipher/Encryptor.java rename to core-java-security/src/main/java/com/baeldung/cipher/Encryptor.java diff --git a/core-java/src/main/java/com/baeldung/encrypt/FileEncrypterDecrypter.java b/core-java-security/src/main/java/com/baeldung/encrypt/FileEncrypterDecrypter.java similarity index 100% rename from core-java/src/main/java/com/baeldung/encrypt/FileEncrypterDecrypter.java rename to core-java-security/src/main/java/com/baeldung/encrypt/FileEncrypterDecrypter.java diff --git a/core-java/src/main/java/com/baeldung/hashing/SHA256Hashing.java b/core-java-security/src/main/java/com/baeldung/hashing/SHA256Hashing.java similarity index 100% rename from core-java/src/main/java/com/baeldung/hashing/SHA256Hashing.java rename to core-java-security/src/main/java/com/baeldung/hashing/SHA256Hashing.java diff --git a/core-java/src/main/java/com/baeldung/keystore/JavaKeyStore.java b/core-java-security/src/main/java/com/baeldung/keystore/JavaKeyStore.java similarity index 100% rename from core-java/src/main/java/com/baeldung/keystore/JavaKeyStore.java rename to core-java-security/src/main/java/com/baeldung/keystore/JavaKeyStore.java diff --git a/core-java/src/main/java/com/baeldung/passwordhashing/PBKDF2Hasher.java b/core-java-security/src/main/java/com/baeldung/passwordhashing/PBKDF2Hasher.java similarity index 100% rename from core-java/src/main/java/com/baeldung/passwordhashing/PBKDF2Hasher.java rename to core-java-security/src/main/java/com/baeldung/passwordhashing/PBKDF2Hasher.java diff --git a/core-java/src/main/java/com/baeldung/passwordhashing/SHA512Hasher.java b/core-java-security/src/main/java/com/baeldung/passwordhashing/SHA512Hasher.java similarity index 100% rename from core-java/src/main/java/com/baeldung/passwordhashing/SHA512Hasher.java rename to core-java-security/src/main/java/com/baeldung/passwordhashing/SHA512Hasher.java diff --git a/core-java/src/main/java/com/baeldung/passwordhashing/SimplePBKDF2Hasher.java b/core-java-security/src/main/java/com/baeldung/passwordhashing/SimplePBKDF2Hasher.java similarity index 100% rename from core-java/src/main/java/com/baeldung/passwordhashing/SimplePBKDF2Hasher.java rename to core-java-security/src/main/java/com/baeldung/passwordhashing/SimplePBKDF2Hasher.java diff --git a/core-java-security/src/main/java/com/baeldung/ssl/EnableTLSv12.java b/core-java-security/src/main/java/com/baeldung/ssl/EnableTLSv12.java new file mode 100644 index 0000000000..aa70b11584 --- /dev/null +++ b/core-java-security/src/main/java/com/baeldung/ssl/EnableTLSv12.java @@ -0,0 +1,115 @@ +package com.baeldung.ssl; + +import java.io.BufferedReader; +import java.io.BufferedWriter; +import java.io.IOException; +import java.io.InputStreamReader; +import java.io.OutputStreamWriter; +import java.io.PrintWriter; +import java.net.URL; +import java.net.UnknownHostException; +import java.security.KeyManagementException; +import java.security.NoSuchAlgorithmException; +import java.security.SecureRandom; + +import javax.net.ssl.HttpsURLConnection; +import javax.net.ssl.SSLContext; +import javax.net.ssl.SSLParameters; +import javax.net.ssl.SSLSocket; +import javax.net.ssl.SSLSocketFactory; + +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +public class EnableTLSv12 { + + private final Logger logger = LoggerFactory.getLogger(EnableTLSv12.class); + + public String url = ""; + public Integer port = null; + + public EnableTLSv12() { + } + + public static void main(String[] args) throws IOException, KeyManagementException, NoSuchAlgorithmException { + EnableTLSv12 enableTLSv12 = new EnableTLSv12(); + if (args.length != 2) { + System.out.println("Provide the server url and the secure port:"); + System.exit(-1); + } + enableTLSv12.setHost(args); + enableTLSv12.setPort(args); + enableTLSv12.enableTLSv12UsingHttpConnection(); + enableTLSv12.enableTLSv12UsingProtocol(); + enableTLSv12.enableTLSv12UsingSSLContext(); + enableTLSv12.enableTLSv12UsingSSLParameters(); + } + + private void setPort(String[] args) { + url = args[0]; + } + + private void setHost(String[] args) { + String portNumber = args[1]; + port = Integer.parseInt(portNumber); + } + + private void handleCommunication(SSLSocket socket, String usedTLSProcess) throws IOException { + logger.debug("Enabled TLS v1.2 on " + usedTLSProcess); + try (PrintWriter out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()))); BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()))) { + out.println("GET / HTTP/1.0"); + out.println(); + out.flush(); + if (out.checkError()) { + logger.error("SSLSocketClient: java.io.PrintWriter error"); + return; + } + + String inputLine; + while ((inputLine = in.readLine()) != null) + logger.info(inputLine); + } + } + + public void enableTLSv12UsingSSLParameters() throws UnknownHostException, IOException { + SSLSocketFactory socketFactory = (SSLSocketFactory) SSLSocketFactory.getDefault(); + SSLSocket sslSocket = (SSLSocket) socketFactory.createSocket(url.trim(), port); + SSLParameters params = new SSLParameters(); + params.setProtocols(new String[] { "TLSv1.2" }); + sslSocket.setSSLParameters(params); + sslSocket.startHandshake(); + handleCommunication(sslSocket, "SSLSocketFactory-SSLParameters"); + } + + public void enableTLSv12UsingProtocol() throws IOException { + SSLSocketFactory socketFactory = (SSLSocketFactory) SSLSocketFactory.getDefault(); + SSLSocket sslSocket = (SSLSocket) socketFactory.createSocket(url, port); + sslSocket.setEnabledProtocols(new String[] { "TLSv1.2" }); + sslSocket.startHandshake(); + handleCommunication(sslSocket, "SSLSocketFactory-EnabledProtocols"); + } + + public void enableTLSv12UsingHttpConnection() throws IOException, NoSuchAlgorithmException, KeyManagementException { + URL urls = new URL("https://" + url + ":" + port); + SSLContext sslContext = SSLContext.getInstance("TLSv1.2"); + sslContext.init(null, null, new SecureRandom()); + HttpsURLConnection connection = (HttpsURLConnection) urls.openConnection(); + connection.setSSLSocketFactory(sslContext.getSocketFactory()); + try (BufferedReader br = new BufferedReader(new InputStreamReader(connection.getInputStream()))) { + String input; + while ((input = br.readLine()) != null) { + logger.info(input); + } + } + logger.debug("Created TLSv1.2 connection on HttpsURLConnection"); + } + + public void enableTLSv12UsingSSLContext() throws NoSuchAlgorithmException, KeyManagementException, UnknownHostException, IOException { + SSLContext sslContext = SSLContext.getInstance("TLSv1.2"); + sslContext.init(null, null, new SecureRandom()); + SSLSocketFactory socketFactory = sslContext.getSocketFactory(); + SSLSocket socket = (SSLSocket) socketFactory.createSocket(url, port); + handleCommunication(socket, "SSLContext"); + } + +} diff --git a/core-java/src/main/java/com/baeldung/ssl/SecureConnection.java b/core-java-security/src/main/java/com/baeldung/ssl/SecureConnection.java similarity index 100% rename from core-java/src/main/java/com/baeldung/ssl/SecureConnection.java rename to core-java-security/src/main/java/com/baeldung/ssl/SecureConnection.java diff --git a/core-java/src/main/java/com/baeldung/ssl/example/SimpleClient.java b/core-java-security/src/main/java/com/baeldung/ssl/example/SimpleClient.java similarity index 100% rename from core-java/src/main/java/com/baeldung/ssl/example/SimpleClient.java rename to core-java-security/src/main/java/com/baeldung/ssl/example/SimpleClient.java diff --git a/core-java/src/main/java/com/baeldung/ssl/example/SimpleServer.java b/core-java-security/src/main/java/com/baeldung/ssl/example/SimpleServer.java similarity index 100% rename from core-java/src/main/java/com/baeldung/ssl/example/SimpleServer.java rename to core-java-security/src/main/java/com/baeldung/ssl/example/SimpleServer.java diff --git a/core-java-security/src/main/resources/logback.xml b/core-java-security/src/main/resources/logback.xml new file mode 100644 index 0000000000..56af2d397e --- /dev/null +++ b/core-java-security/src/main/resources/logback.xml @@ -0,0 +1,19 @@ + + + + + %d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n + + + + + + + + + + + + + + \ No newline at end of file diff --git a/core-java/src/test/java/com/baeldung/cipher/EncryptorUnitTest.java b/core-java-security/src/test/java/com/baeldung/cipher/EncryptorUnitTest.java similarity index 100% rename from core-java/src/test/java/com/baeldung/cipher/EncryptorUnitTest.java rename to core-java-security/src/test/java/com/baeldung/cipher/EncryptorUnitTest.java diff --git a/core-java/src/test/java/com/baeldung/encrypt/FileEncrypterDecrypterIntegrationTest.java b/core-java-security/src/test/java/com/baeldung/encrypt/FileEncrypterDecrypterIntegrationTest.java similarity index 100% rename from core-java/src/test/java/com/baeldung/encrypt/FileEncrypterDecrypterIntegrationTest.java rename to core-java-security/src/test/java/com/baeldung/encrypt/FileEncrypterDecrypterIntegrationTest.java diff --git a/core-java/src/test/java/com/baeldung/hashing/SHA256HashingUnitTest.java b/core-java-security/src/test/java/com/baeldung/hashing/SHA256HashingUnitTest.java similarity index 100% rename from core-java/src/test/java/com/baeldung/hashing/SHA256HashingUnitTest.java rename to core-java-security/src/test/java/com/baeldung/hashing/SHA256HashingUnitTest.java diff --git a/core-java/src/test/java/com/baeldung/keystore/JavaKeyStoreUnitTest.java b/core-java-security/src/test/java/com/baeldung/keystore/JavaKeyStoreUnitTest.java similarity index 100% rename from core-java/src/test/java/com/baeldung/keystore/JavaKeyStoreUnitTest.java rename to core-java-security/src/test/java/com/baeldung/keystore/JavaKeyStoreUnitTest.java diff --git a/core-java/src/test/java/com/baeldung/passwordhashing/PBKDF2HasherUnitTest.java b/core-java-security/src/test/java/com/baeldung/passwordhashing/PBKDF2HasherUnitTest.java similarity index 100% rename from core-java/src/test/java/com/baeldung/passwordhashing/PBKDF2HasherUnitTest.java rename to core-java-security/src/test/java/com/baeldung/passwordhashing/PBKDF2HasherUnitTest.java diff --git a/core-java/src/test/java/com/baeldung/passwordhashing/SHA512HasherUnitTest.java b/core-java-security/src/test/java/com/baeldung/passwordhashing/SHA512HasherUnitTest.java similarity index 100% rename from core-java/src/test/java/com/baeldung/passwordhashing/SHA512HasherUnitTest.java rename to core-java-security/src/test/java/com/baeldung/passwordhashing/SHA512HasherUnitTest.java diff --git a/core-java/src/test/java/org/baeldung/java/md5/JavaMD5UnitTest.java b/core-java-security/src/test/java/org/baeldung/java/md5/JavaMD5UnitTest.java similarity index 100% rename from core-java/src/test/java/org/baeldung/java/md5/JavaMD5UnitTest.java rename to core-java-security/src/test/java/org/baeldung/java/md5/JavaMD5UnitTest.java diff --git a/core-java/src/test/resources/test_md5.txt b/core-java-security/src/test/resources/test_md5.txt similarity index 100% rename from core-java/src/test/resources/test_md5.txt rename to core-java-security/src/test/resources/test_md5.txt diff --git a/core-java/README.md b/core-java/README.md index 21c58bb880..5aee69d9a9 100644 --- a/core-java/README.md +++ b/core-java/README.md @@ -5,7 +5,6 @@ ### Relevant Articles: - [Java Timer](http://www.baeldung.com/java-timer-and-timertask) - [How to Run a Shell Command in Java](http://www.baeldung.com/run-shell-command-in-java) -- [MD5 Hashing in Java](http://www.baeldung.com/java-md5) - [How to Print Screen in Java](http://www.baeldung.com/print-screen-in-java) - [A Guide To Java Regular Expressions API](http://www.baeldung.com/regular-expressions-java) - [Getting Started with Java Properties](http://www.baeldung.com/java-properties) @@ -23,44 +22,27 @@ - [Difference between URL and URI](http://www.baeldung.com/java-url-vs-uri) - [Creating a Java Compiler Plugin](http://www.baeldung.com/java-build-compiler-plugin) - [Quick Guide to Java Stack](http://www.baeldung.com/java-stack) -- [Guide to java.util.Formatter](http://www.baeldung.com/java-string-formatter) -- [Guide to the Cipher Class](http://www.baeldung.com/java-cipher-class) - [Compiling Java *.class Files with javac](http://www.baeldung.com/javac) -- [A Guide to Iterator in Java](http://www.baeldung.com/java-iterator) - [Introduction to Javadoc](http://www.baeldung.com/javadoc) - [Guide to the Externalizable Interface in Java](http://www.baeldung.com/java-externalizable) -- [A Practical Guide to DecimalFormat](http://www.baeldung.com/java-decimalformat) - [How to Detect the OS Using Java](http://www.baeldung.com/java-detect-os) - [ASCII Art in Java](http://www.baeldung.com/ascii-art-in-java) - [What is the serialVersionUID?](http://www.baeldung.com/java-serial-version-uid) - [A Guide to the ResourceBundle](http://www.baeldung.com/java-resourcebundle) - [Class Loaders in Java](http://www.baeldung.com/java-classloaders) -- [Introduction to SSL in Java](http://www.baeldung.com/java-ssl) -- [Java KeyStore API](http://www.baeldung.com/java-keystore) - [Double-Checked Locking with Singleton](http://www.baeldung.com/java-singleton-double-checked-locking) - [Guide to Java Clock Class](http://www.baeldung.com/java-clock) - [Importance of Main Manifest Attribute in a Self-Executing JAR](http://www.baeldung.com/java-jar-executable-manifest-main-class) -- [How to Get the File Extension of a File in Java](http://www.baeldung.com/java-file-extension) - [Java Global Exception Handler](http://www.baeldung.com/java-global-exception-handler) -- [Encrypting and Decrypting Files in Java](http://www.baeldung.com/java-cipher-input-output-stream) - [How to Get the Size of an Object in Java](http://www.baeldung.com/java-size-of-object) - [Guide to Java Instrumentation](http://www.baeldung.com/java-instrumentation) -- [Getting a File’s Mime Type in Java](http://www.baeldung.com/java-file-mime-type) - [Common Java Exceptions](http://www.baeldung.com/java-common-exceptions) - [Throw Exception in Optional in Java 8](https://www.baeldung.com/java-optional-throw-exception) -- [Add a Character to a String at a Given Position](https://www.baeldung.com/java-add-character-to-string) -- [Calculating the nth Root in Java](https://www.baeldung.com/java-nth-root) -- [Convert Double to String, Removing Decimal Places](https://www.baeldung.com/java-double-to-string) -- [ZoneOffset in Java](https://www.baeldung.com/java-zone-offset) -- [Hashing a Password in Java](https://www.baeldung.com/java-password-hashing) - [Merging java.util.Properties Objects](https://www.baeldung.com/java-merging-properties) -- [A Guide to SimpleDateFormat](https://www.baeldung.com/java-simple-date-format) -- [SSL Handshake Failures](https://www.baeldung.com/java-ssl-handshake-failures) -- [Changing the Order in a Sum Operation Can Produce Different Results?](https://www.baeldung.com/java-floating-point-sum-order) +- [Merging java.util.Properties Objects](https://www.baeldung.com/java-merging-properties) - [Java – Try with Resources](https://www.baeldung.com/java-try-with-resources) - [Abstract Classes in Java](https://www.baeldung.com/java-abstract-class) - [Guide to Character Encoding](https://www.baeldung.com/java-char-encoding) -- [Calculate the Area of a Circle in Java](https://www.baeldung.com/java-calculate-circle-area) -- [A Guide to the Java Math Class](https://www.baeldung.com/java-lang-math) - [Graphs in Java](https://www.baeldung.com/java-graphs) - [Console I/O in Java](http://www.baeldung.com/java-console-input-output) +- [Formatting with printf() in Java](https://www.baeldung.com/java-printstream-printf) diff --git a/core-java/pom.xml b/core-java/pom.xml index b4f0643aa8..6c58653d5a 100644 --- a/core-java/pom.xml +++ b/core-java/pom.xml @@ -24,11 +24,6 @@ commons-lang3 ${commons-lang3.version} - - org.bouncycastle - bcprov-jdk15on - ${bouncycastle.version} - org.unix4j unix4j-command @@ -75,12 +70,6 @@ ${assertj-core.version} test - - - commons-codec - commons-codec - ${commons-codec.version} - org.javamoney moneta @@ -126,17 +115,6 @@ h2 ${h2database.version} - - - org.apache.tika - tika-core - ${tika.version} - - - net.sf.jmimemagic - jmimemagic - ${jmime-magic.version} - org.javassist @@ -477,8 +455,6 @@ 3.5 - 1.55 - 1.10 2.5 3.6.1 1.0.3 @@ -509,9 +485,6 @@ 2.0.3.RELEASE 1.6.0 61.1 - - 1.18 - 0.1.5 3.21.0-GA diff --git a/core-java/src/main/java/com/baeldung/curltojava/JavaCurlExamples.java b/core-java/src/main/java/com/baeldung/curltojava/JavaCurlExamples.java new file mode 100644 index 0000000000..166b0ecb13 --- /dev/null +++ b/core-java/src/main/java/com/baeldung/curltojava/JavaCurlExamples.java @@ -0,0 +1,29 @@ +package com.baeldung.curltojava; + +import java.io.BufferedInputStream; +import java.io.IOException; +import java.io.InputStream; +import java.util.logging.Level; +import java.util.logging.Logger; + +public class JavaCurlExamples { + + public static String inputStreamToString(InputStream inputStream) { + final int bufferSize = 8 * 1024; + byte[] buffer = new byte[bufferSize]; + final StringBuilder builder = new StringBuilder(); + try (BufferedInputStream bufferedInputStream = new BufferedInputStream(inputStream, bufferSize)) { + while (bufferedInputStream.read(buffer) != -1) { + builder.append(new String(buffer)); + } + } catch (IOException ex) { + Logger.getLogger(JavaCurlExamples.class.getName()).log(Level.SEVERE, null, ex); + } + return builder.toString(); + } + + public static void consumeInputStream(InputStream inputStream) { + inputStreamToString(inputStream); + } + +} diff --git a/core-java/src/main/java/com/baeldung/reflection/Employee.java b/core-java/src/main/java/com/baeldung/reflection/Employee.java new file mode 100644 index 0000000000..833cf26b14 --- /dev/null +++ b/core-java/src/main/java/com/baeldung/reflection/Employee.java @@ -0,0 +1,7 @@ +package com.baeldung.reflection; + +public class Employee extends Person { + + public int employeeId; + +} diff --git a/core-java/src/main/java/com/baeldung/reflection/MonthEmployee.java b/core-java/src/main/java/com/baeldung/reflection/MonthEmployee.java new file mode 100644 index 0000000000..697ecc1500 --- /dev/null +++ b/core-java/src/main/java/com/baeldung/reflection/MonthEmployee.java @@ -0,0 +1,7 @@ +package com.baeldung.reflection; + +public class MonthEmployee extends Employee { + + private double reward; + +} diff --git a/core-java/src/main/java/com/baeldung/reflection/Person.java b/core-java/src/main/java/com/baeldung/reflection/Person.java new file mode 100644 index 0000000000..23b312cdd9 --- /dev/null +++ b/core-java/src/main/java/com/baeldung/reflection/Person.java @@ -0,0 +1,8 @@ +package com.baeldung.reflection; + +public class Person { + + public String lastName; + private String firstName; + +} diff --git a/core-java/src/test/java/com/baeldung/curltojava/JavaCurlExamplesLiveTest.java b/core-java/src/test/java/com/baeldung/curltojava/JavaCurlExamplesLiveTest.java new file mode 100644 index 0000000000..2ec62cbbf9 --- /dev/null +++ b/core-java/src/test/java/com/baeldung/curltojava/JavaCurlExamplesLiveTest.java @@ -0,0 +1,50 @@ +package com.baeldung.curltojava; + +import java.io.File; +import java.io.IOException; +import java.io.InputStream; + +import org.junit.Assert; +import org.junit.Test; + +public class JavaCurlExamplesLiveTest { + + @Test + public void givenCommand_whenCalled_thenProduceZeroExitCode() throws IOException { + String command = "curl -X GET https://postman-echo.com/get?foo1=bar1&foo2=bar2"; + ProcessBuilder processBuilder = new ProcessBuilder(command.split(" ")); + processBuilder.directory(new File("/home/")); + Process process = processBuilder.start(); + InputStream inputStream = process.getInputStream(); + // Consume the inputStream so the process can exit + JavaCurlExamples.consumeInputStream(inputStream); + int exitCode = process.exitValue(); + + Assert.assertEquals(0, exitCode); + } + + @Test + public void givenNewCommands_whenCalled_thenCheckIfIsAlive() throws IOException { + String command = "curl -X GET https://postman-echo.com/get?foo1=bar1&foo2=bar2"; + ProcessBuilder processBuilder = new ProcessBuilder(command.split(" ")); + processBuilder.directory(new File("/home/")); + Process process = processBuilder.start(); + + // Re-use processBuilder + processBuilder.command(new String[]{"newCommand", "arguments"}); + + Assert.assertEquals(true, process.isAlive()); + } + + @Test + public void whenRequestPost_thenCheckIfReturnContent() throws IOException { + String command = "curl -X POST https://postman-echo.com/post --data foo1=bar1&foo2=bar2"; + Process process = Runtime.getRuntime().exec(command); + + // Get the POST result + String content = JavaCurlExamples.inputStreamToString(process.getInputStream()); + + Assert.assertTrue(null != content && !content.isEmpty()); + } + +} diff --git a/core-java/src/test/java/com/baeldung/leapyear/LeapYearUnitTest.java b/core-java/src/test/java/com/baeldung/leapyear/LeapYearUnitTest.java new file mode 100644 index 0000000000..9fb3d03838 --- /dev/null +++ b/core-java/src/test/java/com/baeldung/leapyear/LeapYearUnitTest.java @@ -0,0 +1,39 @@ +package com.baeldung.leapyear; + +import java.time.Year; +import java.util.GregorianCalendar; + +import org.junit.Assert; +import org.junit.Test; + +public class LeapYearUnitTest { + + //Before Java8 + @Test + public void testLeapYearUsingGregorianCalendar () { + Assert.assertFalse(new GregorianCalendar().isLeapYear(2018)); + } + + //Java 8 and above + @Test + public void testLeapYearUsingJavaTimeYear () { + Assert.assertTrue(Year.isLeap(2012)); + } + + @Test + public void testBCYearUsingJavaTimeYear () { + Assert.assertTrue(Year.isLeap(-4)); + } + + @Test + public void testWrongLeapYearUsingJavaTimeYear () { + Assert.assertFalse(Year.isLeap(2018)); + } + + @Test + public void testLeapYearInDateUsingJavaTimeYear () { + LocalDate date = LocalDate.parse("2020-01-05", DateTimeFormatter.ISO_LOCAL_DATE); + Assert.assertTrue(Year.from(date).isLeap()); + } + +} diff --git a/core-java/src/test/java/com/baeldung/reflection/PersonAndEmployeeReflectionUnitTest.java b/core-java/src/test/java/com/baeldung/reflection/PersonAndEmployeeReflectionUnitTest.java new file mode 100644 index 0000000000..c051f165f1 --- /dev/null +++ b/core-java/src/test/java/com/baeldung/reflection/PersonAndEmployeeReflectionUnitTest.java @@ -0,0 +1,128 @@ +package com.baeldung.reflection; + +import org.junit.Test; + +import java.lang.reflect.Field; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.Collections; +import java.util.List; + +import static org.junit.Assert.*; + +public class PersonAndEmployeeReflectionUnitTest { + + // Fields names + private static final String LAST_NAME_FIELD = "lastName"; + private static final String FIRST_NAME_FIELD = "firstName"; + private static final String EMPLOYEE_ID_FIELD = "employeeId"; + private static final String MONTH_EMPLOYEE_REWARD_FIELD = "reward"; + + @Test + public void givenPersonClass_whenGetDeclaredFields_thenTwoFields() { + // When + Field[] allFields = Person.class.getDeclaredFields(); + + // Then + assertEquals(2, allFields.length); + + Field lastNameField = allFields[0]; + assertEquals(LAST_NAME_FIELD, lastNameField.getName()); + assertEquals(String.class, lastNameField.getType()); + + Field firstNameField = allFields[1]; + assertEquals(FIRST_NAME_FIELD, firstNameField.getName()); + assertEquals(String.class, firstNameField.getType()); + } + + @Test + public void givenEmployeeClass_whenSuperClassGetDeclaredFields_thenOneField() { + // When + Field[] allFields = Employee.class.getSuperclass().getDeclaredFields(); + + // Then + assertEquals(2, allFields.length); + + Field lastNameField = allFields[0]; + assertEquals(LAST_NAME_FIELD, lastNameField.getName()); + assertEquals(String.class, lastNameField.getType()); + + Field firstNameField = allFields[1]; + assertEquals(FIRST_NAME_FIELD, firstNameField.getName()); + assertEquals(String.class, firstNameField.getType()); + } + + @Test + public void givenEmployeeClass_whenGetDeclaredFields_thenOneField() { + // When + Field[] allFields = Employee.class.getDeclaredFields(); + + // Then + assertEquals(1, allFields.length); + + Field employeeIdField = allFields[0]; + assertEquals(EMPLOYEE_ID_FIELD, employeeIdField.getName()); + assertEquals(int.class, employeeIdField.getType()); + } + + @Test + public void givenEmployeeClass_whenGetDeclaredFieldsOnBothClasses_thenThreeFields() { + // When + Field[] personFields = Employee.class.getSuperclass().getDeclaredFields(); + Field[] employeeFields = Employee.class.getDeclaredFields(); + Field[] allFields = new Field[employeeFields.length + personFields.length]; + Arrays.setAll(allFields, i -> (i < personFields.length ? personFields[i] : employeeFields[i - personFields.length])); + + // Then + assertEquals(3, allFields.length); + + Field lastNameField = allFields[0]; + assertEquals(LAST_NAME_FIELD, lastNameField.getName()); + assertEquals(String.class, lastNameField.getType()); + + Field firstNameField = allFields[1]; + assertEquals(FIRST_NAME_FIELD, firstNameField.getName()); + assertEquals(String.class, firstNameField.getType()); + + Field employeeIdField = allFields[2]; + assertEquals(EMPLOYEE_ID_FIELD, employeeIdField.getName()); + assertEquals(int.class, employeeIdField.getType()); + } + + @Test + public void givenMonthEmployeeClass_whenGetAllFields_thenFourFields() { + // When + List allFields = getAllFields(MonthEmployee.class); + + // Then + assertEquals(4, allFields.size()); + + Field lastNameField = allFields.get(0); + assertEquals(LAST_NAME_FIELD, lastNameField.getName()); + assertEquals(String.class, lastNameField.getType()); + + Field firstNameField = allFields.get(1); + assertEquals(FIRST_NAME_FIELD, firstNameField.getName()); + assertEquals(String.class, firstNameField.getType()); + + Field employeeIdField = allFields.get(2); + assertEquals(EMPLOYEE_ID_FIELD, employeeIdField.getName()); + assertEquals(int.class, employeeIdField.getType()); + + Field monthEmployeeRewardField = allFields.get(3); + assertEquals(MONTH_EMPLOYEE_REWARD_FIELD, monthEmployeeRewardField.getName()); + assertEquals(double.class, monthEmployeeRewardField.getType()); + } + + public List getAllFields(Class clazz) { + if (clazz == null) { + return Collections.emptyList(); + } + + List result = new ArrayList<>(); + result.addAll(getAllFields(clazz.getSuperclass())); + result.addAll(Arrays.asList(clazz.getDeclaredFields())); + return result; + } + +} diff --git a/core-java/src/test/java/com/baeldung/string/StringReplaceAndRemoveUnitTest.java b/core-java/src/test/java/com/baeldung/string/StringReplaceAndRemoveUnitTest.java deleted file mode 100644 index d952d2383b..0000000000 --- a/core-java/src/test/java/com/baeldung/string/StringReplaceAndRemoveUnitTest.java +++ /dev/null @@ -1,83 +0,0 @@ -package com.baeldung.string; - - -import org.apache.commons.lang3.StringUtils; -import org.junit.Test; - -import static org.junit.Assert.assertFalse; -import static org.junit.Assert.assertTrue; - -public class StringReplaceAndRemoveUnitTest { - - - @Test - public void givenTestStrings_whenReplace_thenProcessedString() { - - String master = "Hello World Baeldung!"; - String target = "Baeldung"; - String replacement = "Java"; - String processed = master.replace(target, replacement); - assertTrue(processed.contains(replacement)); - assertFalse(processed.contains(target)); - - } - - @Test - public void givenTestStrings_whenReplaceAll_thenProcessedString() { - - String master2 = "Welcome to Baeldung, Hello World Baeldung"; - String regexTarget= "(Baeldung)$"; - String replacement = "Java"; - String processed2 = master2.replaceAll(regexTarget, replacement); - assertTrue(processed2.endsWith("Java")); - - } - - @Test - public void givenTestStrings_whenStringBuilderMethods_thenProcessedString() { - - String master = "Hello World Baeldung!"; - String target = "Baeldung"; - String replacement = "Java"; - - int startIndex = master.indexOf(target); - int stopIndex = startIndex + target.length(); - - StringBuilder builder = new StringBuilder(master); - - - builder.delete(startIndex, stopIndex); - assertFalse(builder.toString().contains(target)); - - - builder.replace(startIndex, stopIndex, replacement); - assertTrue(builder.toString().contains(replacement)); - - - } - - - @Test - public void givenTestStrings_whenStringUtilsMethods_thenProcessedStrings() { - - String master = "Hello World Baeldung!"; - String target = "Baeldung"; - String replacement = "Java"; - - String processed = StringUtils.replace(master, target, replacement); - assertTrue(processed.contains(replacement)); - - String master2 = "Hello World Baeldung!"; - String target2 = "baeldung"; - String processed2 = StringUtils.replaceIgnoreCase(master2, target2, replacement); - assertFalse(processed2.contains(target)); - - } - - - - - - - -} diff --git a/core-kotlin/README.md b/core-kotlin/README.md index 05f07e7e7e..225ad87e87 100644 --- a/core-kotlin/README.md +++ b/core-kotlin/README.md @@ -47,3 +47,7 @@ - [Dependency Injection for Kotlin with Injekt](https://www.baeldung.com/kotlin-dependency-injection-with-injekt) - [Implementing a Binary Tree in Kotlin](https://www.baeldung.com/kotlin-binary-tree) - [Generate a Random Alphanumeric String in Kotlin](https://www.baeldung.com/kotlin-random-alphanumeric-string) +- [Kotlin Contracts](https://www.baeldung.com/kotlin-contracts) +- [Operator Overloading in Kotlin](https://www.baeldung.com/kotlin-operator-overloading) +- [Inline Classes in Kotlin](https://www.baeldung.com/kotlin-inline-classes) +- [Creating Java static final Equivalents in Kotlin](https://www.baeldung.com/kotlin-java-static-final) diff --git a/core-kotlin/pom.xml b/core-kotlin/pom.xml index 8b871f28ee..ed79ebc01b 100644 --- a/core-kotlin/pom.xml +++ b/core-kotlin/pom.xml @@ -72,17 +72,6 @@ injekt-core 1.16.1 - - uy.kohesive.kovert - kovert-vertx - [1.5.0,1.6.0) - - - nl.komponents.kovenant - kovenant - - - diff --git a/gson/README.md b/gson/README.md index e1eb155f43..4edd7158d4 100644 --- a/gson/README.md +++ b/gson/README.md @@ -9,3 +9,4 @@ - [Exclude Fields from Serialization in Gson](http://www.baeldung.com/gson-exclude-fields-serialization) - [Save Data to a JSON File with Gson](https://www.baeldung.com/gson-save-file) - [Convert JSON to a Map Using Gson](https://www.baeldung.com/gson-json-to-map) +- [Working with Primitive Values in Gson](https://www.baeldung.com/java-gson-primitives) diff --git a/guava/README.md b/guava/README.md index 0346d34903..60754dbe57 100644 --- a/guava/README.md +++ b/guava/README.md @@ -18,4 +18,3 @@ - [Hamcrest Text Matchers](http://www.baeldung.com/hamcrest-text-matchers) - [Quick Guide to the Guava RateLimiter](http://www.baeldung.com/guava-rate-limiter) - [Hamcrest File Matchers](https://www.baeldung.com/hamcrest-file-matchers) -- [SHA-256 Hashing in Java](https://www.baeldung.com/sha-256-hashing-java) diff --git a/java-collections-maps/README.md b/java-collections-maps/README.md index a6037a3c57..b4ab270448 100644 --- a/java-collections-maps/README.md +++ b/java-collections-maps/README.md @@ -17,3 +17,5 @@ - [Finding the Highest Value in a Java Map](https://www.baeldung.com/java-find-map-max) - [Merging Two Maps with Java 8](https://www.baeldung.com/java-merge-maps) - [How to Check If a Key Exists in a Map](https://www.baeldung.com/java-map-key-exists) +- [Comparing Two HashMaps in Java](https://www.baeldung.com/java-compare-hashmaps) +- [Immutable Map Implementations in Java](https://www.baeldung.com/java-immutable-maps) diff --git a/java-collections-maps/src/main/java/com/baeldung/convert/MapToString.java b/java-collections-maps/src/main/java/com/baeldung/convert/MapToString.java new file mode 100644 index 0000000000..aca0d05ef1 --- /dev/null +++ b/java-collections-maps/src/main/java/com/baeldung/convert/MapToString.java @@ -0,0 +1,34 @@ +package com.baeldung.convert; + +import com.google.common.base.Joiner; +import org.apache.commons.lang3.StringUtils; + +import java.util.Map; +import java.util.stream.Collectors; + +public class MapToString { + + public static String convertWithIteration(Map map) { + StringBuilder mapAsString = new StringBuilder("{"); + for (Integer key : map.keySet()) { + mapAsString.append(key + "=" + map.get(key) + ", "); + } + mapAsString.delete(mapAsString.length()-2, mapAsString.length()).append("}"); + return mapAsString.toString(); + } + + public static String convertWithStream(Map map) { + String mapAsString = map.keySet().stream() + .map(key -> key + "=" + map.get(key)) + .collect(Collectors.joining(", ", "{", "}")); + return mapAsString; + } + + public static String convertWithGuava(Map map) { + return Joiner.on(",").withKeyValueSeparator("=").join(map); + } + + public static String convertWithApache(Map map) { + return StringUtils.join(map); + } +} diff --git a/java-collections-maps/src/main/java/com/baeldung/convert/StringToMap.java b/java-collections-maps/src/main/java/com/baeldung/convert/StringToMap.java new file mode 100644 index 0000000000..caabca4a09 --- /dev/null +++ b/java-collections-maps/src/main/java/com/baeldung/convert/StringToMap.java @@ -0,0 +1,21 @@ +package com.baeldung.convert; + +import com.google.common.base.Splitter; + +import java.util.Arrays; +import java.util.Map; +import java.util.stream.Collectors; + +public class StringToMap { + + public static Map convertWithStream(String mapAsString) { + Map map = Arrays.stream(mapAsString.split(",")) + .map(entry -> entry.split("=")) + .collect(Collectors.toMap(entry -> entry[0], entry -> entry[1])); + return map; + } + + public static Map convertWithGuava(String mapAsString) { + return Splitter.on(',').withKeyValueSeparator('=').split(mapAsString); + } +} diff --git a/java-collections-maps/src/test/java/com/baeldung/convert/MapToStringUnitTest.java b/java-collections-maps/src/test/java/com/baeldung/convert/MapToStringUnitTest.java new file mode 100644 index 0000000000..d9923e74a0 --- /dev/null +++ b/java-collections-maps/src/test/java/com/baeldung/convert/MapToStringUnitTest.java @@ -0,0 +1,48 @@ +package com.baeldung.convert; + +import org.apache.commons.collections4.MapUtils; +import org.junit.Assert; +import org.junit.jupiter.api.BeforeEach; +import org.junit.jupiter.api.Test; + +import java.util.HashMap; +import java.util.Map; + +public class MapToStringUnitTest { + + private Map wordsByKey = new HashMap<>(); + + @BeforeEach + public void setup() { + wordsByKey.clear(); + wordsByKey.put(1, "one"); + wordsByKey.put(2, "two"); + wordsByKey.put(3, "three"); + wordsByKey.put(4, "four"); + } + + @Test + public void givenMap_WhenUsingIteration_ThenResultingMapIsCorrect() { + String mapAsString = MapToString.convertWithIteration(wordsByKey); + Assert.assertEquals("{1=one, 2=two, 3=three, 4=four}", mapAsString); + } + + @Test + public void givenMap_WhenUsingStream_ThenResultingMapIsCorrect() { + String mapAsString = MapToString.convertWithStream(wordsByKey); + Assert.assertEquals("{1=one, 2=two, 3=three, 4=four}", mapAsString); + } + + @Test + public void givenMap_WhenUsingGuava_ThenResultingMapIsCorrect() { + String mapAsString = MapToString.convertWithGuava(wordsByKey); + Assert.assertEquals("1=one,2=two,3=three,4=four", mapAsString); + } + + @Test + public void givenMap_WhenUsingApache_ThenResultingMapIsCorrect() { + String mapAsString = MapToString.convertWithApache(wordsByKey); + Assert.assertEquals("{1=one, 2=two, 3=three, 4=four}", mapAsString); + MapUtils.debugPrint(System.out, "Map as String", wordsByKey); + } +} \ No newline at end of file diff --git a/java-collections-maps/src/test/java/com/baeldung/convert/StringToMapUnitTest.java b/java-collections-maps/src/test/java/com/baeldung/convert/StringToMapUnitTest.java new file mode 100644 index 0000000000..8fb906efd0 --- /dev/null +++ b/java-collections-maps/src/test/java/com/baeldung/convert/StringToMapUnitTest.java @@ -0,0 +1,23 @@ +package com.baeldung.convert; + +import org.junit.Assert; +import org.junit.jupiter.api.Test; + +import java.util.Map; + +public class StringToMapUnitTest { + + @Test + public void givenString_WhenUsingStream_ThenResultingStringIsCorrect() { + Map wordsByKey = StringToMap.convertWithStream("1=one,2=two,3=three,4=four"); + Assert.assertEquals(4, wordsByKey.size()); + Assert.assertEquals("one", wordsByKey.get("1")); + } + + @Test + void givenString_WhenUsingGuava_ThenResultingStringIsCorrect() { + Map wordsByKey = StringToMap.convertWithGuava("1=one,2=two,3=three,4=four"); + Assert.assertEquals(4, wordsByKey.size()); + Assert.assertEquals("one", wordsByKey.get("1")); + } +} \ No newline at end of file diff --git a/java-dates/README.md b/java-dates/README.md index 21e54082f4..ac3166d938 100644 --- a/java-dates/README.md +++ b/java-dates/README.md @@ -26,3 +26,5 @@ - [Format ZonedDateTime to String](https://www.baeldung.com/java-format-zoned-datetime-string) - [Convert Between java.time.Instant and java.sql.Timestamp](https://www.baeldung.com/java-time-instant-to-java-sql-timestamp) - [Convert between String and Timestamp](https://www.baeldung.com/java-string-to-timestamp) +- [A Guide to SimpleDateFormat](https://www.baeldung.com/java-simple-date-format) +- [ZoneOffset in Java](https://www.baeldung.com/java-zone-offset) \ No newline at end of file diff --git a/core-java/src/main/java/com/baeldung/zoneddatetime/OffsetDateTimeExample.java b/java-dates/src/main/java/com/baeldung/zoneddatetime/OffsetDateTimeExample.java similarity index 100% rename from core-java/src/main/java/com/baeldung/zoneddatetime/OffsetDateTimeExample.java rename to java-dates/src/main/java/com/baeldung/zoneddatetime/OffsetDateTimeExample.java diff --git a/core-java/src/main/java/com/baeldung/zoneddatetime/OffsetTimeExample.java b/java-dates/src/main/java/com/baeldung/zoneddatetime/OffsetTimeExample.java similarity index 100% rename from core-java/src/main/java/com/baeldung/zoneddatetime/OffsetTimeExample.java rename to java-dates/src/main/java/com/baeldung/zoneddatetime/OffsetTimeExample.java diff --git a/core-java/src/main/java/com/baeldung/zoneddatetime/ZoneDateTimeExample.java b/java-dates/src/main/java/com/baeldung/zoneddatetime/ZoneDateTimeExample.java similarity index 100% rename from core-java/src/main/java/com/baeldung/zoneddatetime/ZoneDateTimeExample.java rename to java-dates/src/main/java/com/baeldung/zoneddatetime/ZoneDateTimeExample.java diff --git a/java-dates/src/test/java/com/baeldung/date/DateDiffUnitTest.java b/java-dates/src/test/java/com/baeldung/date/DateDiffUnitTest.java index 1234a700de..a35699e469 100644 --- a/java-dates/src/test/java/com/baeldung/date/DateDiffUnitTest.java +++ b/java-dates/src/test/java/com/baeldung/date/DateDiffUnitTest.java @@ -8,6 +8,8 @@ import java.time.Duration; import java.time.LocalDate; import java.time.LocalDateTime; import java.time.Period; +import java.time.ZoneId; +import java.time.ZonedDateTime; import java.time.temporal.ChronoUnit; import java.util.Date; import java.util.Locale; diff --git a/core-java/src/test/java/com/baeldung/simpledateformat/SimpleDateFormatUnitTest.java b/java-dates/src/test/java/com/baeldung/simpledateformat/SimpleDateFormatUnitTest.java similarity index 100% rename from core-java/src/test/java/com/baeldung/simpledateformat/SimpleDateFormatUnitTest.java rename to java-dates/src/test/java/com/baeldung/simpledateformat/SimpleDateFormatUnitTest.java diff --git a/core-java/src/test/java/com/baeldung/zoneddatetime/OffsetDateTimeExampleUnitTest.java b/java-dates/src/test/java/com/baeldung/zoneddatetime/OffsetDateTimeExampleUnitTest.java similarity index 100% rename from core-java/src/test/java/com/baeldung/zoneddatetime/OffsetDateTimeExampleUnitTest.java rename to java-dates/src/test/java/com/baeldung/zoneddatetime/OffsetDateTimeExampleUnitTest.java diff --git a/core-java/src/test/java/com/baeldung/zoneddatetime/OffsetTimeExampleUnitTest.java b/java-dates/src/test/java/com/baeldung/zoneddatetime/OffsetTimeExampleUnitTest.java similarity index 100% rename from core-java/src/test/java/com/baeldung/zoneddatetime/OffsetTimeExampleUnitTest.java rename to java-dates/src/test/java/com/baeldung/zoneddatetime/OffsetTimeExampleUnitTest.java diff --git a/core-java/src/test/java/com/baeldung/zoneddatetime/ZoneDateTimeExampleUnitTest.java b/java-dates/src/test/java/com/baeldung/zoneddatetime/ZoneDateTimeExampleUnitTest.java similarity index 100% rename from core-java/src/test/java/com/baeldung/zoneddatetime/ZoneDateTimeExampleUnitTest.java rename to java-dates/src/test/java/com/baeldung/zoneddatetime/ZoneDateTimeExampleUnitTest.java diff --git a/java-numbers/README.md b/java-numbers/README.md index 1138d9a74c..2b1131f325 100644 --- a/java-numbers/README.md +++ b/java-numbers/README.md @@ -13,3 +13,9 @@ - [Find All Pairs of Numbers in an Array That Add Up to a Given Sum](http://www.baeldung.com/java-algorithm-number-pairs-sum) - [Java – Random Long, Float, Integer and Double](http://www.baeldung.com/java-generate-random-long-float-integer-double) - [Using Math.sin with Degrees](https://www.baeldung.com/java-math-sin-degrees) +- [A Practical Guide to DecimalFormat](http://www.baeldung.com/java-decimalformat) +- [Calculating the nth Root in Java](https://www.baeldung.com/java-nth-root) +- [Convert Double to String, Removing Decimal Places](https://www.baeldung.com/java-double-to-string) +- [Changing the Order in a Sum Operation Can Produce Different Results?](https://www.baeldung.com/java-floating-point-sum-order) +- [Calculate the Area of a Circle in Java](https://www.baeldung.com/java-calculate-circle-area) +- [A Guide to the Java Math Class](https://www.baeldung.com/java-lang-math) \ No newline at end of file diff --git a/java-numbers/pom.xml b/java-numbers/pom.xml index bb63c8cfe1..0f5140ea5e 100644 --- a/java-numbers/pom.xml +++ b/java-numbers/pom.xml @@ -72,16 +72,6 @@ - - org.apache.maven.plugins - maven-surefire-plugin - - - **/*IntegrationTest.java - - true - - org.apache.maven.plugins diff --git a/core-java/src/main/java/com/baeldung/area/circle/Circle.java b/java-numbers/src/main/java/com/baeldung/area/circle/Circle.java similarity index 100% rename from core-java/src/main/java/com/baeldung/area/circle/Circle.java rename to java-numbers/src/main/java/com/baeldung/area/circle/Circle.java diff --git a/core-java/src/main/java/com/baeldung/area/circle/CircleArea.java b/java-numbers/src/main/java/com/baeldung/area/circle/CircleArea.java similarity index 100% rename from core-java/src/main/java/com/baeldung/area/circle/CircleArea.java rename to java-numbers/src/main/java/com/baeldung/area/circle/CircleArea.java diff --git a/core-java/src/main/java/com/baeldung/nth/root/calculator/NthRootCalculator.java b/java-numbers/src/main/java/com/baeldung/nth/root/calculator/NthRootCalculator.java similarity index 100% rename from core-java/src/main/java/com/baeldung/nth/root/calculator/NthRootCalculator.java rename to java-numbers/src/main/java/com/baeldung/nth/root/calculator/NthRootCalculator.java diff --git a/core-java/src/main/java/com/baeldung/nth/root/main/Main.java b/java-numbers/src/main/java/com/baeldung/nth/root/main/Main.java similarity index 100% rename from core-java/src/main/java/com/baeldung/nth/root/main/Main.java rename to java-numbers/src/main/java/com/baeldung/nth/root/main/Main.java diff --git a/core-java/src/main/java/com/baeldung/string/DoubleToString.java b/java-numbers/src/main/java/com/baeldung/string/DoubleToString.java similarity index 99% rename from core-java/src/main/java/com/baeldung/string/DoubleToString.java rename to java-numbers/src/main/java/com/baeldung/string/DoubleToString.java index d26d26f3df..dd55ba51ad 100644 --- a/core-java/src/main/java/com/baeldung/string/DoubleToString.java +++ b/java-numbers/src/main/java/com/baeldung/string/DoubleToString.java @@ -38,4 +38,5 @@ public class DoubleToString { return df.format(d); } + } diff --git a/core-java/src/test/java/com/baeldung/decimalformat/DecimalFormatExamplesUnitTest.java b/java-numbers/src/test/java/com/baeldung/decimalformat/DecimalFormatExamplesUnitTest.java similarity index 100% rename from core-java/src/test/java/com/baeldung/decimalformat/DecimalFormatExamplesUnitTest.java rename to java-numbers/src/test/java/com/baeldung/decimalformat/DecimalFormatExamplesUnitTest.java diff --git a/core-java/src/test/java/com/baeldung/java/math/MathUnitTest.java b/java-numbers/src/test/java/com/baeldung/java/math/MathUnitTest.java similarity index 100% rename from core-java/src/test/java/com/baeldung/java/math/MathUnitTest.java rename to java-numbers/src/test/java/com/baeldung/java/math/MathUnitTest.java diff --git a/core-java/src/test/java/com/baeldung/nth/root/calculator/NthRootCalculatorUnitTest.java b/java-numbers/src/test/java/com/baeldung/nth/root/calculator/NthRootCalculatorUnitTest.java similarity index 100% rename from core-java/src/test/java/com/baeldung/nth/root/calculator/NthRootCalculatorUnitTest.java rename to java-numbers/src/test/java/com/baeldung/nth/root/calculator/NthRootCalculatorUnitTest.java diff --git a/core-java/src/test/java/com/baeldung/nth/root/main/MainUnitTest.java b/java-numbers/src/test/java/com/baeldung/nth/root/main/MainUnitTest.java similarity index 100% rename from core-java/src/test/java/com/baeldung/nth/root/main/MainUnitTest.java rename to java-numbers/src/test/java/com/baeldung/nth/root/main/MainUnitTest.java diff --git a/core-java/src/test/java/com/baeldung/removingdecimals/RemovingDecimalsManualTest.java b/java-numbers/src/test/java/com/baeldung/removingdecimals/RemovingDecimalsManualTest.java similarity index 100% rename from core-java/src/test/java/com/baeldung/removingdecimals/RemovingDecimalsManualTest.java rename to java-numbers/src/test/java/com/baeldung/removingdecimals/RemovingDecimalsManualTest.java diff --git a/core-java/src/test/java/com/baeldung/removingdecimals/RemovingDecimalsUnitTest.java b/java-numbers/src/test/java/com/baeldung/removingdecimals/RemovingDecimalsUnitTest.java similarity index 100% rename from core-java/src/test/java/com/baeldung/removingdecimals/RemovingDecimalsUnitTest.java rename to java-numbers/src/test/java/com/baeldung/removingdecimals/RemovingDecimalsUnitTest.java diff --git a/core-java/src/test/java/com/baeldung/string/DoubleToStringUnitTest.java b/java-numbers/src/test/java/com/baeldung/string/DoubleToStringUnitTest.java similarity index 100% rename from core-java/src/test/java/com/baeldung/string/DoubleToStringUnitTest.java rename to java-numbers/src/test/java/com/baeldung/string/DoubleToStringUnitTest.java diff --git a/java-streams/README.md b/java-streams/README.md index 2550f08650..33ca2619a8 100644 --- a/java-streams/README.md +++ b/java-streams/README.md @@ -14,3 +14,4 @@ - [Primitive Type Streams in Java 8](http://www.baeldung.com/java-8-primitive-streams) - [Stream Ordering in Java](https://www.baeldung.com/java-stream-ordering) - [Introduction to Protonpack](https://www.baeldung.com/java-protonpack) +- [Java Stream Filter with Lambda Expression](https://www.baeldung.com/java-stream-filter-lambda) diff --git a/java-strings/README.md b/java-strings/README.md index 60131e392d..b72a378d06 100644 --- a/java-strings/README.md +++ b/java-strings/README.md @@ -45,3 +45,8 @@ - [Remove or Replace part of a String in Java](https://www.baeldung.com/java-remove-replace-string-part) - [Replace a Character at a Specific Index in a String in Java](https://www.baeldung.com/java-replace-character-at-index) - [Convert a Comma Separated String to a List in Java](https://www.baeldung.com/java-string-with-separator-to-list) +- [Guide to java.util.Formatter](http://www.baeldung.com/java-string-formatter) +- [Add a Character to a String at a Given Position](https://www.baeldung.com/java-add-character-to-string) +- [Remove Leading and Trailing Characters from a String](https://www.baeldung.com/java-remove-trailing-characters) +- [Concatenating Strings In Java](https://www.baeldung.com/java-strings-concatenation) +- [Java toString() Method](https://www.baeldung.com/java-tostring) diff --git a/core-java/src/main/java/com/baeldung/string/AppendCharAtPositionX.java b/java-strings/src/main/java/com/baeldung/string/AppendCharAtPositionX.java similarity index 100% rename from core-java/src/main/java/com/baeldung/string/AppendCharAtPositionX.java rename to java-strings/src/main/java/com/baeldung/string/AppendCharAtPositionX.java diff --git a/java-strings/src/main/java/com/baeldung/string/Pangram.java b/java-strings/src/main/java/com/baeldung/string/Pangram.java new file mode 100644 index 0000000000..c09b0c1d29 --- /dev/null +++ b/java-strings/src/main/java/com/baeldung/string/Pangram.java @@ -0,0 +1,61 @@ +package com.baeldung.string; + +import java.util.Arrays; +import java.util.Map; +import java.util.function.Function; +import java.util.stream.Collectors; +import java.util.stream.Stream; + +public class Pangram { + private static final int ALPHABET_COUNT = 26; + + public static boolean isPangram(String str) { + if (str == null) + return false; + Boolean[] alphabetMarker = new Boolean[ALPHABET_COUNT]; + Arrays.fill(alphabetMarker, false); + int alphabetIndex = 0; + String strUpper = str.toUpperCase(); + for (int i = 0; i < str.length(); i++) { + if ('A' <= strUpper.charAt(i) && strUpper.charAt(i) <= 'Z') { + alphabetIndex = strUpper.charAt(i) - 'A'; + alphabetMarker[alphabetIndex] = true; + } + } + for (boolean index : alphabetMarker) { + if (!index) + return false; + } + return true; + } + + public static boolean isPangramWithStreams(String str) { + if (str == null) + return false; + + // filtered character stream + String strUpper = str.toUpperCase(); + Stream filteredCharStream = strUpper.chars() + .filter(item -> ((item >= 'A' && item <= 'Z'))) + .mapToObj(c -> (char) c); + Map alphabetMap = filteredCharStream.collect(Collectors.toMap(item -> item, k -> Boolean.TRUE, (p1, p2) -> p1)); + + return (alphabetMap.size() == ALPHABET_COUNT); + } + + public static boolean isPerfectPangram(String str) { + if (str == null) + return false; + + // filtered character stream + String strUpper = str.toUpperCase(); + Stream filteredCharStream = strUpper.chars() + .filter(item -> ((item >= 'A' && item <= 'Z'))) + .mapToObj(c -> (char) c); + Map alphabetFrequencyMap = filteredCharStream.collect(Collectors.groupingBy(Function.identity(), Collectors.counting())); + + return (alphabetFrequencyMap.size() == ALPHABET_COUNT && alphabetFrequencyMap.values() + .stream() + .allMatch(item -> item == 1)); + } +} diff --git a/java-strings/src/main/java/com/baeldung/string/tostring/Customer.java b/java-strings/src/main/java/com/baeldung/string/tostring/Customer.java new file mode 100644 index 0000000000..e914a83f0e --- /dev/null +++ b/java-strings/src/main/java/com/baeldung/string/tostring/Customer.java @@ -0,0 +1,19 @@ +package com.baeldung.string.tostring; + +public class Customer { + private String firstName; + private String lastName; + + public String getFirstName() { + return firstName; + } + public void setFirstName(String firstName) { + this.firstName = firstName; + } + public String getLastName() { + return lastName; + } + public void setLastName(String lastName) { + this.lastName = lastName; + } +} diff --git a/java-strings/src/main/java/com/baeldung/string/tostring/CustomerArrayToString.java b/java-strings/src/main/java/com/baeldung/string/tostring/CustomerArrayToString.java new file mode 100644 index 0000000000..1736657276 --- /dev/null +++ b/java-strings/src/main/java/com/baeldung/string/tostring/CustomerArrayToString.java @@ -0,0 +1,19 @@ +package com.baeldung.string.tostring; + +import java.util.Arrays; + +public class CustomerArrayToString extends Customer { + private Order[] orders; + + public Order[] getOrders() { + return orders; + } + public void setOrders(Order[] orders) { + this.orders = orders; + } + @Override + public String toString() { + return "Customer [orders=" + Arrays.toString(orders) + ", getFirstName()=" + getFirstName() + + ", getLastName()=" + getLastName() + "]"; + } +} diff --git a/java-strings/src/main/java/com/baeldung/string/tostring/CustomerComplexObjectToString.java b/java-strings/src/main/java/com/baeldung/string/tostring/CustomerComplexObjectToString.java new file mode 100644 index 0000000000..9bede1b3fc --- /dev/null +++ b/java-strings/src/main/java/com/baeldung/string/tostring/CustomerComplexObjectToString.java @@ -0,0 +1,19 @@ +package com.baeldung.string.tostring; + +public class CustomerComplexObjectToString extends Customer { + private Order order; + + public Order getOrder() { + return order; + } + + public void setOrder(Order order) { + this.order = order; + } + + @Override + public String toString() { + return "Customer [order=" + order + ", getFirstName()=" + getFirstName() + + ", getLastName()=" + getLastName() + "]"; + } +} \ No newline at end of file diff --git a/java-strings/src/main/java/com/baeldung/string/tostring/CustomerPrimitiveToString.java b/java-strings/src/main/java/com/baeldung/string/tostring/CustomerPrimitiveToString.java new file mode 100644 index 0000000000..86e08ca447 --- /dev/null +++ b/java-strings/src/main/java/com/baeldung/string/tostring/CustomerPrimitiveToString.java @@ -0,0 +1,19 @@ +package com.baeldung.string.tostring; + +public class CustomerPrimitiveToString extends Customer { + private long balance; + + public long getBalance() { + return balance; + } + + public void setBalance(long balance) { + this.balance = balance; + } + + @Override + public String toString() { + return "Customer [balance=" + balance + ", getFirstName()=" + getFirstName() + + ", getLastName()=" + getLastName() + "]"; + } +} diff --git a/java-strings/src/main/java/com/baeldung/string/tostring/CustomerReflectionToString.java b/java-strings/src/main/java/com/baeldung/string/tostring/CustomerReflectionToString.java new file mode 100644 index 0000000000..2da1163c63 --- /dev/null +++ b/java-strings/src/main/java/com/baeldung/string/tostring/CustomerReflectionToString.java @@ -0,0 +1,41 @@ +package com.baeldung.string.tostring; + +import java.util.List; + +import org.apache.commons.lang3.builder.ReflectionToStringBuilder; + +public class CustomerReflectionToString extends Customer{ + + private Integer score; + private List orders; + private StringBuffer fullname; + + public Integer getScore() { + return score; + } + + public void setScore(Integer score) { + this.score = score; + } + + public List getOrders() { + return orders; + } + + public void setOrders(List orders) { + this.orders = orders; + } + + public StringBuffer getFullname() { + return fullname; + } + + public void setFullname(StringBuffer fullname) { + this.fullname = fullname; + } + + @Override + public String toString() { + return ReflectionToStringBuilder.toString(this); + } +} diff --git a/java-strings/src/main/java/com/baeldung/string/tostring/CustomerWrapperCollectionToString.java b/java-strings/src/main/java/com/baeldung/string/tostring/CustomerWrapperCollectionToString.java new file mode 100644 index 0000000000..6c7b999045 --- /dev/null +++ b/java-strings/src/main/java/com/baeldung/string/tostring/CustomerWrapperCollectionToString.java @@ -0,0 +1,39 @@ +package com.baeldung.string.tostring; + +import java.util.List; + +public class CustomerWrapperCollectionToString extends Customer { + private Integer score; + private List orders; + private StringBuffer fullname; + + public Integer getScore() { + return score; + } + + public void setScore(Integer score) { + this.score = score; + } + + public List getOrders() { + return orders; + } + + public void setOrders(List orders) { + this.orders = orders; + } + + public StringBuffer getFullname() { + return fullname; + } + + public void setFullname(StringBuffer fullname) { + this.fullname = fullname; + } + + @Override + public String toString() { + return "Customer [score=" + score + ", orders=" + orders + ", fullname=" + fullname + + ", getFirstName()=" + getFirstName() + ", getLastName()=" + getLastName() + "]"; + } +} diff --git a/java-strings/src/main/java/com/baeldung/string/tostring/Order.java b/java-strings/src/main/java/com/baeldung/string/tostring/Order.java new file mode 100644 index 0000000000..017e2d9bc8 --- /dev/null +++ b/java-strings/src/main/java/com/baeldung/string/tostring/Order.java @@ -0,0 +1,46 @@ +package com.baeldung.string.tostring; + +public class Order { + + private String orderId; + private String desc; + private long value; + private String status; + + public String getOrderId() { + return orderId; + } + + public void setOrderId(String orderId) { + this.orderId = orderId; + } + + public String getDesc() { + return desc; + } + + public void setDesc(String desc) { + this.desc = desc; + } + + public long getValue() { + return value; + } + + public void setValue(long value) { + this.value = value; + } + + public String getStatus() { + return status; + } + + public void setStatus(String status) { + this.status = status; + } + @Override + public String toString() { + return "Order [orderId=" + orderId + ", desc=" + desc + ", value=" + value + "]"; + } + +} diff --git a/core-java/src/test/java/com/baeldung/string/AppendCharAtPositionXUnitTest.java b/java-strings/src/test/java/com/baeldung/string/AppendCharAtPositionXUnitTest.java similarity index 100% rename from core-java/src/test/java/com/baeldung/string/AppendCharAtPositionXUnitTest.java rename to java-strings/src/test/java/com/baeldung/string/AppendCharAtPositionXUnitTest.java diff --git a/java-strings/src/test/java/com/baeldung/string/PangramUnitTest.java b/java-strings/src/test/java/com/baeldung/string/PangramUnitTest.java new file mode 100644 index 0000000000..36e603b535 --- /dev/null +++ b/java-strings/src/test/java/com/baeldung/string/PangramUnitTest.java @@ -0,0 +1,43 @@ +package com.baeldung.string; + +import static org.junit.Assert.assertFalse; +import static org.junit.Assert.assertTrue; +import org.junit.Test; + +public class PangramUnitTest { + + @Test + public void givenValidString_isPangram_shouldReturnSuccess() { + String input = "Two driven jocks help fax my big quiz"; + assertTrue(Pangram.isPangram(input)); + assertTrue(Pangram.isPangramWithStreams(input)); + } + + @Test + public void givenNullString_isPangram_shouldReturnFailure() { + String input = null; + assertFalse(Pangram.isPangram(input)); + assertFalse(Pangram.isPangramWithStreams(input)); + assertFalse(Pangram.isPerfectPangram(input)); + } + + @Test + public void givenPerfectPangramString_isPerfectPangram_shouldReturnSuccess() { + String input = "abcdefghijklmNoPqrStuVwxyz"; + assertTrue(Pangram.isPerfectPangram(input)); + } + + @Test + public void givenNonPangramString_isPangram_shouldReturnFailure() { + String input = "invalid pangram"; + assertFalse(Pangram.isPangram(input)); + assertFalse(Pangram.isPangramWithStreams(input)); + } + + @Test + public void givenPangram_isPerfectPangram_shouldReturnFailure() { + String input = "Two driven jocks help fax my big quiz"; + assertFalse(Pangram.isPerfectPangram(input)); + } + +} diff --git a/java-strings/src/test/java/com/baeldung/string/StringReplaceAndRemoveUnitTest.java b/java-strings/src/test/java/com/baeldung/string/StringReplaceAndRemoveUnitTest.java index d952d2383b..4d2b54241b 100644 --- a/java-strings/src/test/java/com/baeldung/string/StringReplaceAndRemoveUnitTest.java +++ b/java-strings/src/test/java/com/baeldung/string/StringReplaceAndRemoveUnitTest.java @@ -1,7 +1,7 @@ package com.baeldung.string; - import org.apache.commons.lang3.StringUtils; +import org.apache.commons.lang3.RegExUtils; import org.junit.Test; import static org.junit.Assert.assertFalse; @@ -9,7 +9,6 @@ import static org.junit.Assert.assertTrue; public class StringReplaceAndRemoveUnitTest { - @Test public void givenTestStrings_whenReplace_thenProcessedString() { @@ -26,7 +25,7 @@ public class StringReplaceAndRemoveUnitTest { public void givenTestStrings_whenReplaceAll_thenProcessedString() { String master2 = "Welcome to Baeldung, Hello World Baeldung"; - String regexTarget= "(Baeldung)$"; + String regexTarget = "(Baeldung)$"; String replacement = "Java"; String processed2 = master2.replaceAll(regexTarget, replacement); assertTrue(processed2.endsWith("Java")); @@ -45,18 +44,16 @@ public class StringReplaceAndRemoveUnitTest { StringBuilder builder = new StringBuilder(master); - builder.delete(startIndex, stopIndex); - assertFalse(builder.toString().contains(target)); - + assertFalse(builder.toString() + .contains(target)); builder.replace(startIndex, stopIndex, replacement); - assertTrue(builder.toString().contains(replacement)); - + assertTrue(builder.toString() + .contains(replacement)); } - @Test public void givenTestStrings_whenStringUtilsMethods_thenProcessedStrings() { @@ -74,10 +71,20 @@ public class StringReplaceAndRemoveUnitTest { } + @Test + public void givenTestStrings_whenReplaceExactWord_thenProcessedString() { + String sentence = "A car is not the same as a carriage, and some planes can carry cars inside them!"; + String regexTarget = "\\bcar\\b"; + String exactWordReplaced = sentence.replaceAll(regexTarget, "truck"); + assertTrue("A truck is not the same as a carriage, and some planes can carry cars inside them!".equals(exactWordReplaced)); + } - - - - + @Test + public void givenTestStrings_whenReplaceExactWordUsingRegExUtilsMethod_thenProcessedString() { + String sentence = "A car is not the same as a carriage, and some planes can carry cars inside them!"; + String regexTarget = "\\bcar\\b"; + String exactWordReplaced = RegExUtils.replaceAll(sentence, regexTarget, "truck"); + assertTrue("A truck is not the same as a carriage, and some planes can carry cars inside them!".equals(exactWordReplaced)); + } } diff --git a/java-strings/src/test/java/com/baeldung/string/formatter/DateToStringFormatterUnitTest.java b/java-strings/src/test/java/com/baeldung/string/formatter/DateToStringFormatterUnitTest.java index f236c641c3..d760510c73 100644 --- a/java-strings/src/test/java/com/baeldung/string/formatter/DateToStringFormatterUnitTest.java +++ b/java-strings/src/test/java/com/baeldung/string/formatter/DateToStringFormatterUnitTest.java @@ -1,7 +1,6 @@ package com.baeldung.string.formatter; -import org.junit.BeforeClass; -import org.junit.Test; +import static org.junit.Assert.assertEquals; import java.text.DateFormat; import java.text.SimpleDateFormat; @@ -11,9 +10,11 @@ import java.time.ZoneId; import java.time.format.DateTimeFormatter; import java.util.Calendar; import java.util.Date; +import java.util.Locale; import java.util.TimeZone; -import static org.junit.Assert.assertEquals; +import org.junit.BeforeClass; +import org.junit.Test; public class DateToStringFormatterUnitTest { @@ -40,7 +41,7 @@ public class DateToStringFormatterUnitTest { @Test public void whenDateConvertedUsingDateFormatToString_thenCorrect() { String formattedDate = DateFormat - .getDateTimeInstance(DateFormat.MEDIUM, DateFormat.SHORT) + .getDateTimeInstance(DateFormat.MEDIUM, DateFormat.SHORT, Locale.US) .format(date); assertEquals(EXPECTED_STRING_DATE, formattedDate); diff --git a/java-strings/src/test/java/com/baeldung/string/interview/LocaleUnitTest.java b/java-strings/src/test/java/com/baeldung/string/interview/LocaleUnitTest.java new file mode 100644 index 0000000000..1d221056fd --- /dev/null +++ b/java-strings/src/test/java/com/baeldung/string/interview/LocaleUnitTest.java @@ -0,0 +1,19 @@ +package com.baeldung.string.interview; + +import java.math.BigDecimal; +import java.text.NumberFormat; +import java.util.Locale; +import static org.junit.Assert.assertEquals; + +import org.junit.Test; + +public class LocaleUnitTest { + @Test + public void whenUsingLocal_thenCorrectResultsForDifferentLocale() { + Locale usLocale = Locale.US; + BigDecimal number = new BigDecimal(102_300.456d); + + NumberFormat usNumberFormat = NumberFormat.getCurrencyInstance(usLocale); + assertEquals(usNumberFormat.format(number), "$102,300.46"); + } +} diff --git a/java-strings/src/test/java/com/baeldung/string/interview/StringAnagramUnitTest.java b/java-strings/src/test/java/com/baeldung/string/interview/StringAnagramUnitTest.java new file mode 100644 index 0000000000..aadfade737 --- /dev/null +++ b/java-strings/src/test/java/com/baeldung/string/interview/StringAnagramUnitTest.java @@ -0,0 +1,29 @@ +package com.baeldung.string.interview; + +import static org.assertj.core.api.Assertions.assertThat; + +import java.util.Arrays; + +import org.junit.Test; + +public class StringAnagramUnitTest { + public boolean isAnagram(String s1, String s2) { + if(s1.length() != s2.length()) + return false; + + char[] arr1 = s1.toCharArray(); + char[] arr2 = s2.toCharArray(); + + Arrays.sort(arr1); + Arrays.sort(arr2); + + return Arrays.equals(arr1, arr2); + } + + @Test + public void whenTestAnagrams_thenTestingCorrectly() { + assertThat(isAnagram("car", "arc")).isTrue(); + assertThat(isAnagram("west", "stew")).isTrue(); + assertThat(isAnagram("west", "east")).isFalse(); + } +} diff --git a/java-strings/src/test/java/com/baeldung/string/interview/StringChangeCaseUnitTest.java b/java-strings/src/test/java/com/baeldung/string/interview/StringChangeCaseUnitTest.java new file mode 100644 index 0000000000..2c7ec500fe --- /dev/null +++ b/java-strings/src/test/java/com/baeldung/string/interview/StringChangeCaseUnitTest.java @@ -0,0 +1,20 @@ +package com.baeldung.string.interview; + +import static org.junit.Assert.assertEquals; + +import org.junit.Test; + +public class StringChangeCaseUnitTest { + @Test + public void givenString_whenChangingToUppercase_thenCaseChanged() { + String s = "Welcome to Baeldung!"; + assertEquals("WELCOME TO BAELDUNG!", s.toUpperCase()); + } + + + @Test + public void givenString_whenChangingToLowerrcase_thenCaseChanged() { + String s = "Welcome to Baeldung!"; + assertEquals("welcome to baeldung!", s.toLowerCase()); + } +} diff --git a/java-strings/src/test/java/com/baeldung/string/interview/StringCountOccurrencesUnitTest.java b/java-strings/src/test/java/com/baeldung/string/interview/StringCountOccurrencesUnitTest.java new file mode 100644 index 0000000000..6c17643ac8 --- /dev/null +++ b/java-strings/src/test/java/com/baeldung/string/interview/StringCountOccurrencesUnitTest.java @@ -0,0 +1,28 @@ +package com.baeldung.string.interview; + +import static org.junit.Assert.assertEquals; + +import org.junit.Test; + +public class StringCountOccurrencesUnitTest { + public int countOccurrences(String s, char c) { + int count = 0; + for (int i = 0; i < s.length(); i++) { + if (s.charAt(i) == c) { + count++; + } + } + return count; + } + + @Test + public void givenString_whenCountingFrequencyOfChar_thenCountCorrect() { + assertEquals(3, countOccurrences("united states", 't')); + } + + public void givenString_whenUsingJava8_thenCountingOfCharCorrect() { + String str = "united states"; + long count = str.chars().filter(ch -> (char)ch == 't').count(); + assertEquals(3, count); + } +} diff --git a/java-strings/src/test/java/com/baeldung/string/interview/StringFormatUnitTest.java b/java-strings/src/test/java/com/baeldung/string/interview/StringFormatUnitTest.java new file mode 100644 index 0000000000..787017791c --- /dev/null +++ b/java-strings/src/test/java/com/baeldung/string/interview/StringFormatUnitTest.java @@ -0,0 +1,14 @@ +package com.baeldung.string.interview; + +import static org.junit.Assert.assertEquals; + +import org.junit.Test; + +public class StringFormatUnitTest { + @Test + public void givenString_whenUsingStringFormat_thenStringFormatted() { + String title = "Baeldung"; + String formatted = String.format("Title is %s", title); + assertEquals(formatted, "Title is Baeldung"); + } +} diff --git a/java-strings/src/test/java/com/baeldung/string/interview/StringInternUnitTest.java b/java-strings/src/test/java/com/baeldung/string/interview/StringInternUnitTest.java new file mode 100644 index 0000000000..c5bffb7573 --- /dev/null +++ b/java-strings/src/test/java/com/baeldung/string/interview/StringInternUnitTest.java @@ -0,0 +1,17 @@ +package com.baeldung.string.interview; + +import static org.assertj.core.api.Assertions.assertThat; + +import org.junit.Test; + +public class StringInternUnitTest { + @Test + public void whenCallingStringIntern_thenStringsInterned() { + String s1 = "Baeldung"; + String s2 = new String("Baeldung"); + String s3 = new String("Baeldung").intern(); + + assertThat(s1 == s2).isFalse(); + assertThat(s1 == s3).isTrue(); + } +} diff --git a/java-strings/src/test/java/com/baeldung/string/interview/StringJoinerUnitTest.java b/java-strings/src/test/java/com/baeldung/string/interview/StringJoinerUnitTest.java new file mode 100644 index 0000000000..d44c7478e4 --- /dev/null +++ b/java-strings/src/test/java/com/baeldung/string/interview/StringJoinerUnitTest.java @@ -0,0 +1,18 @@ +package com.baeldung.string.interview; + +import java.util.StringJoiner; +import static org.junit.Assert.assertEquals; + +import org.junit.Test; + +public class StringJoinerUnitTest { + @Test + public void whenUsingStringJoiner_thenStringsJoined() { + StringJoiner joiner = new StringJoiner(",", "[", "]"); + joiner.add("Red") + .add("Green") + .add("Blue"); + + assertEquals(joiner.toString(), "[Red,Green,Blue]"); + } +} diff --git a/java-strings/src/test/java/com/baeldung/string/interview/StringPalindromeUnitTest.java b/java-strings/src/test/java/com/baeldung/string/interview/StringPalindromeUnitTest.java new file mode 100644 index 0000000000..79ed14cd99 --- /dev/null +++ b/java-strings/src/test/java/com/baeldung/string/interview/StringPalindromeUnitTest.java @@ -0,0 +1,29 @@ +package com.baeldung.string.interview; + +import static org.assertj.core.api.Assertions.assertThat; + +import org.junit.Test; + +public class StringPalindromeUnitTest { + + public boolean isPalindrome(String text) { + int forward = 0; + int backward = text.length() - 1; + while (backward > forward) { + char forwardChar = text.charAt(forward++); + char backwardChar = text.charAt(backward--); + if (forwardChar != backwardChar) + return false; + } + return true; + } + + @Test + public void givenIsPalindromeMethod_whenCheckingString_thenFindIfPalindrome() { + assertThat(isPalindrome("madam")).isTrue(); + assertThat(isPalindrome("radar")).isTrue(); + assertThat(isPalindrome("level")).isTrue(); + + assertThat(isPalindrome("baeldung")).isFalse(); + } +} diff --git a/java-strings/src/test/java/com/baeldung/string/interview/StringReverseUnitTest.java b/java-strings/src/test/java/com/baeldung/string/interview/StringReverseUnitTest.java new file mode 100644 index 0000000000..bb9b45dc97 --- /dev/null +++ b/java-strings/src/test/java/com/baeldung/string/interview/StringReverseUnitTest.java @@ -0,0 +1,13 @@ +package com.baeldung.string.interview; + +import static org.junit.Assert.assertEquals; + +import org.junit.Test; + +public class StringReverseUnitTest { + @Test + public void whenUsingInbuildMethods_thenStringReversed() { + String reversed = new StringBuilder("baeldung").reverse().toString(); + assertEquals("gnudleab", reversed); + } +} diff --git a/java-strings/src/test/java/com/baeldung/string/interview/StringSplitUnitTest.java b/java-strings/src/test/java/com/baeldung/string/interview/StringSplitUnitTest.java new file mode 100644 index 0000000000..e1cea62462 --- /dev/null +++ b/java-strings/src/test/java/com/baeldung/string/interview/StringSplitUnitTest.java @@ -0,0 +1,32 @@ +package com.baeldung.string.interview; + +import org.apache.commons.lang3.StringUtils; +import org.junit.Test; +import static org.junit.Assert.assertArrayEquals; + +public class StringSplitUnitTest { + @Test + public void givenCoreJava_whenSplittingStrings_thenSplitted() { + String expected[] = { + "john", + "peter", + "mary" + }; + + String[] splitted = "john,peter,mary".split(","); + assertArrayEquals( expected, splitted ); + } + + @Test + public void givenApacheCommons_whenSplittingStrings_thenSplitted() { + String expected[] = { + "john", + "peter", + "mary" + }; + String[] splitted = StringUtils.split("john peter mary"); + assertArrayEquals( expected, splitted ); + } + + +} diff --git a/java-strings/src/test/java/com/baeldung/string/interview/StringToByteArrayUnitTest.java b/java-strings/src/test/java/com/baeldung/string/interview/StringToByteArrayUnitTest.java new file mode 100644 index 0000000000..aee4eedcd6 --- /dev/null +++ b/java-strings/src/test/java/com/baeldung/string/interview/StringToByteArrayUnitTest.java @@ -0,0 +1,24 @@ +package com.baeldung.string.interview; + +import static org.junit.Assert.assertArrayEquals; + +import java.io.UnsupportedEncodingException; +import java.nio.charset.StandardCharsets; + +import org.junit.Test; + +public class StringToByteArrayUnitTest { + @Test + public void whenGetBytes_thenCorrect() throws UnsupportedEncodingException { + byte[] byteArray1 = "abcd".getBytes(); + byte[] byteArray2 = "efgh".getBytes(StandardCharsets.US_ASCII); + byte[] byteArray3 = "ijkl".getBytes("UTF-8"); + byte[] expected1 = new byte[] { 97, 98, 99, 100 }; + byte[] expected2 = new byte[] { 101, 102, 103, 104 }; + byte[] expected3 = new byte[] { 105, 106, 107, 108 }; + + assertArrayEquals(expected1, byteArray1); + assertArrayEquals(expected2, byteArray2); + assertArrayEquals(expected3, byteArray3); + } +} diff --git a/java-strings/src/test/java/com/baeldung/string/interview/StringToCharArrayUnitTest.java b/java-strings/src/test/java/com/baeldung/string/interview/StringToCharArrayUnitTest.java new file mode 100644 index 0000000000..1322d0fa82 --- /dev/null +++ b/java-strings/src/test/java/com/baeldung/string/interview/StringToCharArrayUnitTest.java @@ -0,0 +1,17 @@ +package com.baeldung.string.interview; + +import static org.junit.Assert.assertEquals; + +import java.util.Arrays; + +import org.junit.Test; + +public class StringToCharArrayUnitTest { + @Test + public void whenConvertingStringToCharArray_thenConversionSuccessful() { + String beforeConvStr = "hello"; + char[] afterConvCharArr = { 'h', 'e', 'l', 'l', 'o' }; + + assertEquals(Arrays.equals(beforeConvStr.toCharArray(), afterConvCharArr), true); + } +} diff --git a/java-strings/src/test/java/com/baeldung/string/interview/StringToIntegerUnitTest.java b/java-strings/src/test/java/com/baeldung/string/interview/StringToIntegerUnitTest.java new file mode 100644 index 0000000000..a905438a84 --- /dev/null +++ b/java-strings/src/test/java/com/baeldung/string/interview/StringToIntegerUnitTest.java @@ -0,0 +1,15 @@ +package com.baeldung.string.interview; + +import org.junit.Test; +import static org.assertj.core.api.Assertions.assertThat; + +public class StringToIntegerUnitTest { + @Test + public void givenString_whenParsingInt_shouldConvertToInt() { + String givenString = "42"; + + int result = Integer.parseInt(givenString); + + assertThat(result).isEqualTo(42); + } +} diff --git a/java-strings/src/test/java/com/baeldung/string/tostring/CustomerArrayToStringUnitTest.java b/java-strings/src/test/java/com/baeldung/string/tostring/CustomerArrayToStringUnitTest.java new file mode 100644 index 0000000000..9a88416179 --- /dev/null +++ b/java-strings/src/test/java/com/baeldung/string/tostring/CustomerArrayToStringUnitTest.java @@ -0,0 +1,26 @@ +package com.baeldung.string.tostring; + +import static org.junit.jupiter.api.Assertions.assertEquals; + +import org.junit.jupiter.api.Test; + +public class CustomerArrayToStringUnitTest { + private static final String CUSTOMER_ARRAY_TO_STRING + = "Customer [orders=[Order [orderId=A1111, desc=Game, value=0]], getFirstName()=Rajesh, getLastName()=Bhojwani]"; + + @Test + public void givenArray_whenToString_thenCustomerDetails() { + CustomerArrayToString customer = new CustomerArrayToString(); + customer.setFirstName("Rajesh"); + customer.setLastName("Bhojwani"); + Order[] orders = new Order[1]; + orders[0] = new Order(); + orders[0].setOrderId("A1111"); + orders[0].setDesc("Game"); + orders[0].setStatus("In-Shiping"); + customer.setOrders(orders); + + assertEquals(CUSTOMER_ARRAY_TO_STRING, customer.toString()); + } + +} diff --git a/java-strings/src/test/java/com/baeldung/string/tostring/CustomerComplexObjectToStringUnitTest.java b/java-strings/src/test/java/com/baeldung/string/tostring/CustomerComplexObjectToStringUnitTest.java new file mode 100644 index 0000000000..5ffb0d0e58 --- /dev/null +++ b/java-strings/src/test/java/com/baeldung/string/tostring/CustomerComplexObjectToStringUnitTest.java @@ -0,0 +1,25 @@ +package com.baeldung.string.tostring; + +import static org.junit.jupiter.api.Assertions.assertEquals; + +import org.junit.jupiter.api.Test; + +public class CustomerComplexObjectToStringUnitTest { + private static final String CUSTOMER_COMPLEX_TO_STRING + = "Customer [order=Order [orderId=A1111, desc=Game, value=0], getFirstName()=Rajesh, getLastName()=Bhojwani]"; + + @Test + public void givenComplex_whenToString_thenCustomerDetails() { + CustomerComplexObjectToString customer = new CustomerComplexObjectToString(); + customer.setFirstName("Rajesh"); + customer.setLastName("Bhojwani"); + Order order = new Order(); + order.setOrderId("A1111"); + order.setDesc("Game"); + order.setStatus("In-Shiping"); + customer.setOrder(order); + + assertEquals(CUSTOMER_COMPLEX_TO_STRING, customer.toString()); + } + +} diff --git a/java-strings/src/test/java/com/baeldung/string/tostring/CustomerPrimitiveToStringUnitTest.java b/java-strings/src/test/java/com/baeldung/string/tostring/CustomerPrimitiveToStringUnitTest.java new file mode 100644 index 0000000000..d43733bc60 --- /dev/null +++ b/java-strings/src/test/java/com/baeldung/string/tostring/CustomerPrimitiveToStringUnitTest.java @@ -0,0 +1,22 @@ +package com.baeldung.string.tostring; + +import static org.junit.jupiter.api.Assertions.assertEquals; + +import org.junit.jupiter.api.Test; + +public class CustomerPrimitiveToStringUnitTest { + + private static final String CUSTOMER_PRIMITIVE_TO_STRING + = "Customer [balance=110, getFirstName()=Rajesh, getLastName()=Bhojwani]"; + + @Test + public void givenPrimitive_whenToString_thenCustomerDetails() { + CustomerPrimitiveToString customer = new CustomerPrimitiveToString(); + customer.setFirstName("Rajesh"); + customer.setLastName("Bhojwani"); + customer.setBalance(110); + + assertEquals(CUSTOMER_PRIMITIVE_TO_STRING, customer.toString()); + } +} + diff --git a/java-strings/src/test/java/com/baeldung/string/tostring/CustomerWrapperCollectionToStringUnitTest.java b/java-strings/src/test/java/com/baeldung/string/tostring/CustomerWrapperCollectionToStringUnitTest.java new file mode 100644 index 0000000000..e04512ff75 --- /dev/null +++ b/java-strings/src/test/java/com/baeldung/string/tostring/CustomerWrapperCollectionToStringUnitTest.java @@ -0,0 +1,33 @@ +package com.baeldung.string.tostring; + +import static org.junit.jupiter.api.Assertions.assertEquals; + +import java.util.ArrayList; +import java.util.List; + +import org.junit.jupiter.api.Test; + +public class CustomerWrapperCollectionToStringUnitTest { + private static final String CUSTOMER_WRAPPER_COLLECTION_TO_STRING + = "Customer [score=8, orders=[Book, Pen], fullname=Bhojwani, Rajesh, getFirstName()=Rajesh, getLastName()=Bhojwani]"; + + @Test + public void givenWrapperCollectionStrBuffer_whenToString_thenCustomerDetails() { + CustomerWrapperCollectionToString customer = new CustomerWrapperCollectionToString(); + customer.setFirstName("Rajesh"); + customer.setLastName("Bhojwani"); + customer.setScore(8); + + List orders = new ArrayList(); + orders.add("Book"); + orders.add("Pen"); + customer.setOrders(orders); + + StringBuffer fullname = new StringBuffer(); + fullname.append(customer.getLastName()+", "+ customer.getFirstName()); + customer.setFullname(fullname); + + assertEquals(CUSTOMER_WRAPPER_COLLECTION_TO_STRING, customer.toString()); + } + +} diff --git a/jee-7/README.md b/jee-7/README.md index a2493e561b..a783e7860e 100644 --- a/jee-7/README.md +++ b/jee-7/README.md @@ -5,3 +5,4 @@ - [Introduction to JAX-WS](http://www.baeldung.com/jax-ws) - [A Guide to Java EE Web-Related Annotations](http://www.baeldung.com/javaee-web-annotations) - [Introduction to Testing with Arquillian](http://www.baeldung.com/arquillian) +- [Java EE 7 Batch Processing](https://www.baeldung.com/java-ee-7-batch-processing) diff --git a/kotlin-libraries/pom.xml b/kotlin-libraries/pom.xml index ae77a9aa2d..507e5820d4 100644 --- a/kotlin-libraries/pom.xml +++ b/kotlin-libraries/pom.xml @@ -95,6 +95,23 @@ 0.7.3 + + uy.kohesive.kovert + kovert-vertx + [1.5.0,1.6.0) + + + nl.komponents.kovenant + kovenant + + + + + nl.komponents.kovenant + kovenant + 3.3.0 + pom + @@ -110,4 +127,4 @@ 0.10.4 - \ No newline at end of file + diff --git a/core-kotlin/src/main/kotlin/com/baeldung/kovert/AnnotatedServer.kt b/kotlin-libraries/src/main/kotlin/com/baeldung/kovert/AnnotatedServer.kt similarity index 100% rename from core-kotlin/src/main/kotlin/com/baeldung/kovert/AnnotatedServer.kt rename to kotlin-libraries/src/main/kotlin/com/baeldung/kovert/AnnotatedServer.kt diff --git a/core-kotlin/src/main/kotlin/com/baeldung/kovert/ErrorServer.kt b/kotlin-libraries/src/main/kotlin/com/baeldung/kovert/ErrorServer.kt similarity index 100% rename from core-kotlin/src/main/kotlin/com/baeldung/kovert/ErrorServer.kt rename to kotlin-libraries/src/main/kotlin/com/baeldung/kovert/ErrorServer.kt diff --git a/core-kotlin/src/main/kotlin/com/baeldung/kovert/JsonServer.kt b/kotlin-libraries/src/main/kotlin/com/baeldung/kovert/JsonServer.kt similarity index 100% rename from core-kotlin/src/main/kotlin/com/baeldung/kovert/JsonServer.kt rename to kotlin-libraries/src/main/kotlin/com/baeldung/kovert/JsonServer.kt diff --git a/core-kotlin/src/main/kotlin/com/baeldung/kovert/NoopServer.kt b/kotlin-libraries/src/main/kotlin/com/baeldung/kovert/NoopServer.kt similarity index 100% rename from core-kotlin/src/main/kotlin/com/baeldung/kovert/NoopServer.kt rename to kotlin-libraries/src/main/kotlin/com/baeldung/kovert/NoopServer.kt diff --git a/core-kotlin/src/main/kotlin/com/baeldung/kovert/SecuredServer.kt b/kotlin-libraries/src/main/kotlin/com/baeldung/kovert/SecuredServer.kt similarity index 100% rename from core-kotlin/src/main/kotlin/com/baeldung/kovert/SecuredServer.kt rename to kotlin-libraries/src/main/kotlin/com/baeldung/kovert/SecuredServer.kt diff --git a/core-kotlin/src/main/kotlin/com/baeldung/kovert/SimpleServer.kt b/kotlin-libraries/src/main/kotlin/com/baeldung/kovert/SimpleServer.kt similarity index 100% rename from core-kotlin/src/main/kotlin/com/baeldung/kovert/SimpleServer.kt rename to kotlin-libraries/src/main/kotlin/com/baeldung/kovert/SimpleServer.kt diff --git a/core-kotlin/src/main/resources/kovert.conf b/kotlin-libraries/src/main/resources/kovert.conf similarity index 100% rename from core-kotlin/src/main/resources/kovert.conf rename to kotlin-libraries/src/main/resources/kovert.conf diff --git a/libraries-data/src/main/kafka-connect/04_Custom/connect-distributed.properties b/libraries-data/src/main/kafka-connect/04_Custom/connect-distributed.properties deleted file mode 100644 index 5b91baddbd..0000000000 --- a/libraries-data/src/main/kafka-connect/04_Custom/connect-distributed.properties +++ /dev/null @@ -1,88 +0,0 @@ -## -# Licensed to the Apache Software Foundation (ASF) under one or more -# contributor license agreements. See the NOTICE file distributed with -# this work for additional information regarding copyright ownership. -# The ASF licenses this file to You under the Apache License, Version 2.0 -# (the "License"); you may not use this file except in compliance with -# the License. You may obtain a copy of the License at -# -# http://www.apache.org/licenses/LICENSE-2.0 -# -# Unless required by applicable law or agreed to in writing, software -# distributed under the License is distributed on an "AS IS" BASIS, -# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -# See the License for the specific language governing permissions and -# limitations under the License. -## - -# This file contains some of the configurations for the Kafka Connect distributed worker. This file is intended -# to be used with the examples, and some settings may differ from those used in a production system, especially -# the `bootstrap.servers` and those specifying replication factors. - -# A list of host/port pairs to use for establishing the initial connection to the Kafka cluster. -bootstrap.servers=localhost:9092 - -# unique name for the cluster, used in forming the Connect cluster group. Note that this must not conflict with consumer group IDs -group.id=connect-cluster - -# The converters specify the format of data in Kafka and how to translate it into Connect data. Every Connect user will -# need to configure these based on the format they want their data in when loaded from or stored into Kafka -key.converter=org.apache.kafka.connect.json.JsonConverter -value.converter=org.apache.kafka.connect.json.JsonConverter -# Converter-specific settings can be passed in by prefixing the Converter's setting with the converter we want to apply -# it to -key.converter.schemas.enable=true -value.converter.schemas.enable=true - -# Topic to use for storing offsets. This topic should have many partitions and be replicated and compacted. -# Kafka Connect will attempt to create the topic automatically when needed, but you can always manually create -# the topic before starting Kafka Connect if a specific topic configuration is needed. -# Most users will want to use the built-in default replication factor of 3 or in some cases even specify a larger value. -# Since this means there must be at least as many brokers as the maximum replication factor used, we'd like to be able -# to run this example on a single-broker cluster and so here we instead set the replication factor to 1. -offset.storage.topic=connect-offsets -offset.storage.replication.factor=1 -#offset.storage.partitions=25 - -# Topic to use for storing connector and task configurations; note that this should be a single partition, highly replicated, -# and compacted topic. Kafka Connect will attempt to create the topic automatically when needed, but you can always manually create -# the topic before starting Kafka Connect if a specific topic configuration is needed. -# Most users will want to use the built-in default replication factor of 3 or in some cases even specify a larger value. -# Since this means there must be at least as many brokers as the maximum replication factor used, we'd like to be able -# to run this example on a single-broker cluster and so here we instead set the replication factor to 1. -config.storage.topic=connect-configs -config.storage.replication.factor=1 - -# Topic to use for storing statuses. This topic can have multiple partitions and should be replicated and compacted. -# Kafka Connect will attempt to create the topic automatically when needed, but you can always manually create -# the topic before starting Kafka Connect if a specific topic configuration is needed. -# Most users will want to use the built-in default replication factor of 3 or in some cases even specify a larger value. -# Since this means there must be at least as many brokers as the maximum replication factor used, we'd like to be able -# to run this example on a single-broker cluster and so here we instead set the replication factor to 1. -status.storage.topic=connect-status -status.storage.replication.factor=1 -#status.storage.partitions=5 - -# Flush much faster than normal, which is useful for testing/debugging -offset.flush.interval.ms=10000 - -# These are provided to inform the user about the presence of the REST host and port configs -# Hostname & Port for the REST API to listen on. If this is set, it will bind to the interface used to listen to requests. -#rest.host.name= -#rest.port=8083 - -# The Hostname & Port that will be given out to other workers to connect to i.e. URLs that are routable from other servers. -#rest.advertised.host.name= -#rest.advertised.port= - -# Set to a list of filesystem paths separated by commas (,) to enable class loading isolation for plugins -# (connectors, converters, transformations). The list should consist of top level directories that include -# any combination of: -# a) directories immediately containing jars with plugins and their dependencies -# b) uber-jars with plugins and their dependencies -# c) directories immediately containing the package directory structure of classes of plugins and their dependencies -# Examples: -# plugin.path=/usr/local/share/java,/usr/local/share/kafka/plugins,/opt/connectors, -# Replace the relative path below with an absolute path if you are planning to start Kafka Connect from within a -# directory other than the home directory of Confluent Platform. -plugin.path=./share/java diff --git a/libraries-data/src/main/kafka-connect/04_Custom/connect-mongodb-sink.json b/libraries-data/src/main/kafka-connect/04_Custom/connect-mongodb-sink.json index 333768e4b7..852f400fc6 100644 --- a/libraries-data/src/main/kafka-connect/04_Custom/connect-mongodb-sink.json +++ b/libraries-data/src/main/kafka-connect/04_Custom/connect-mongodb-sink.json @@ -1,22 +1,14 @@ { - "firstName": "John", - "lastName": "Smith", - "age": 25, - "address": { - "streetAddress": "21 2nd Street", - "city": "New York", - "state": "NY", - "postalCode": "10021" - }, - "phoneNumber": [{ - "type": "home", - "number": "212 555-1234" - }, { - "type": "fax", - "number": "646 555-4567" - } - ], - "gender": { - "type": "male" + "name": "mongodb-sink", + "config": { + "connector.class": "at.grahsl.kafka.connect.mongodb.MongoDbSinkConnector", + "tasks.max": 1, + "topics": "connect-custom", + "mongodb.connection.uri": "mongodb://mongo-db/test?retryWrites=true", + "mongodb.collection": "MyCollection", + "key.converter": "org.apache.kafka.connect.json.JsonConverter", + "key.converter.schemas.enable": false, + "value.converter": "org.apache.kafka.connect.json.JsonConverter", + "value.converter.schemas.enable": false } } diff --git a/libraries-data/src/main/kafka-connect/04_Custom/connect-mqtt-source.json b/libraries-data/src/main/kafka-connect/04_Custom/connect-mqtt-source.json index 02d87c5ad7..c76d326c0a 100644 --- a/libraries-data/src/main/kafka-connect/04_Custom/connect-mqtt-source.json +++ b/libraries-data/src/main/kafka-connect/04_Custom/connect-mqtt-source.json @@ -3,9 +3,11 @@ "config": { "connector.class": "io.confluent.connect.mqtt.MqttSourceConnector", "tasks.max": 1, - "mqtt.server.uri": "ws://broker.hivemq.com:8000/mqtt", + "mqtt.server.uri": "tcp://mosquitto:1883", "mqtt.topics": "baeldung", "kafka.topic": "connect-custom", - "value.converter": "org.apache.kafka.connect.converters.ByteArrayConverter" + "value.converter": "org.apache.kafka.connect.converters.ByteArrayConverter", + "confluent.topic.bootstrap.servers": "kafka:9092", + "confluent.topic.replication.factor": 1 } -} +} \ No newline at end of file diff --git a/libraries-data/src/main/kafka-connect/04_Custom/docker-compose.yaml b/libraries-data/src/main/kafka-connect/04_Custom/docker-compose.yaml new file mode 100644 index 0000000000..26cd653335 --- /dev/null +++ b/libraries-data/src/main/kafka-connect/04_Custom/docker-compose.yaml @@ -0,0 +1,94 @@ +version: '3.3' + +services: + mosquitto: + image: eclipse-mosquitto:1.5.5 + hostname: mosquitto + container_name: mosquitto + expose: + - "1883" + ports: + - "1883:1883" + zookeeper: + image: zookeeper:3.4.9 + restart: unless-stopped + hostname: zookeeper + container_name: zookeeper + ports: + - "2181:2181" + environment: + ZOO_MY_ID: 1 + ZOO_PORT: 2181 + ZOO_SERVERS: server.1=zookeeper:2888:3888 + volumes: + - ./zookeeper/data:/data + - ./zookeeper/datalog:/datalog + kafka: + image: confluentinc/cp-kafka:5.1.0 + hostname: kafka + container_name: kafka + ports: + - "9092:9092" + environment: + KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: PLAINTEXT:PLAINTEXT,PLAINTEXT_HOST:PLAINTEXT + KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://kafka:9092,PLAINTEXT_HOST://localhost:29092 + KAFKA_ZOOKEEPER_CONNECT: "zookeeper:2181" + KAFKA_BROKER_ID: 1 + KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1 + volumes: + - ./kafka/data:/var/lib/kafka/data + depends_on: + - zookeeper + kafka-connect: + image: confluentinc/cp-kafka-connect:5.1.0 + hostname: kafka-connect + container_name: kafka-connect + ports: + - "8083:8083" + environment: + CONNECT_BOOTSTRAP_SERVERS: "kafka:9092" + CONNECT_REST_ADVERTISED_HOST_NAME: connect + CONNECT_REST_PORT: 8083 + CONNECT_GROUP_ID: compose-connect-group + CONNECT_CONFIG_STORAGE_TOPIC: docker-connect-configs + CONNECT_OFFSET_STORAGE_TOPIC: docker-connect-offsets + CONNECT_STATUS_STORAGE_TOPIC: docker-connect-status + CONNECT_KEY_CONVERTER: org.apache.kafka.connect.json.JsonConverter + CONNECT_VALUE_CONVERTER: org.apache.kafka.connect.json.JsonConverter + CONNECT_INTERNAL_KEY_CONVERTER: "org.apache.kafka.connect.json.JsonConverter" + CONNECT_INTERNAL_VALUE_CONVERTER: "org.apache.kafka.connect.json.JsonConverter" + CONNECT_CONFIG_STORAGE_REPLICATION_FACTOR: "1" + CONNECT_OFFSET_STORAGE_REPLICATION_FACTOR: "1" + CONNECT_STATUS_STORAGE_REPLICATION_FACTOR: "1" + CONNECT_PLUGIN_PATH: '/usr/share/java,/etc/kafka-connect/jars' + CONNECT_CONFLUENT_TOPIC_REPLICATION_FACTOR: 1 + volumes: + - /tmp/custom/jars:/etc/kafka-connect/jars + depends_on: + - zookeeper + - kafka + - mosquitto + mongo-db: + image: mongo:4.0.5 + hostname: mongo-db + container_name: mongo-db + expose: + - "27017" + ports: + - "27017:27017" + command: --bind_ip_all --smallfiles + volumes: + - ./mongo-db:/data + mongoclient: + image: mongoclient/mongoclient:2.2.0 + container_name: mongoclient + hostname: mongoclient + depends_on: + - mongo-db + ports: + - 3000:3000 + environment: + MONGO_URL: "mongodb://mongo-db:27017" + PORT: 3000 + expose: + - "3000" \ No newline at end of file diff --git a/lombok-custom/README.md b/lombok-custom/README.md new file mode 100644 index 0000000000..bfc784ea7e --- /dev/null +++ b/lombok-custom/README.md @@ -0,0 +1,3 @@ +## Relevant articles: + +- [Implementing a Custom Lombok Annotation](https://www.baeldung.com/lombok-custom-annotation) diff --git a/parent-java/pom.xml b/parent-java/pom.xml index 86be34d508..8f603b2d09 100644 --- a/parent-java/pom.xml +++ b/parent-java/pom.xml @@ -24,7 +24,7 @@ - 22.0 + 23.0 - \ No newline at end of file + diff --git a/patterns/design-patterns/src/main/java/com/baeldung/creational/abstractfactory/AbstractFactory.java b/patterns/design-patterns/src/main/java/com/baeldung/creational/abstractfactory/AbstractFactory.java index 5b4bf08006..88e819c066 100644 --- a/patterns/design-patterns/src/main/java/com/baeldung/creational/abstractfactory/AbstractFactory.java +++ b/patterns/design-patterns/src/main/java/com/baeldung/creational/abstractfactory/AbstractFactory.java @@ -1,6 +1,5 @@ package com.baeldung.creational.abstractfactory; -public interface AbstractFactory { - Animal getAnimal(String toyType) ; - Color getColor(String colorType); +public interface AbstractFactory { + T create(String type) ; } \ No newline at end of file diff --git a/patterns/design-patterns/src/main/java/com/baeldung/creational/abstractfactory/AbstractPatternDriver.java b/patterns/design-patterns/src/main/java/com/baeldung/creational/abstractfactory/AbstractPatternDriver.java index 68759d5aff..c1501091c5 100644 --- a/patterns/design-patterns/src/main/java/com/baeldung/creational/abstractfactory/AbstractPatternDriver.java +++ b/patterns/design-patterns/src/main/java/com/baeldung/creational/abstractfactory/AbstractPatternDriver.java @@ -6,10 +6,10 @@ public class AbstractPatternDriver { //creating a brown toy dog abstractFactory = FactoryProvider.getFactory("Toy"); - Animal toy = abstractFactory.getAnimal("Dog"); + Animal toy =(Animal) abstractFactory.create("Dog"); abstractFactory = FactoryProvider.getFactory("Color"); - Color color = abstractFactory.getColor("Brown"); + Color color =(Color) abstractFactory.create("Brown"); String result = "A " + toy.getType() + " with " + color.getColor() + " color " + toy.makeSound(); diff --git a/patterns/design-patterns/src/main/java/com/baeldung/creational/abstractfactory/AnimalFactory.java b/patterns/design-patterns/src/main/java/com/baeldung/creational/abstractfactory/AnimalFactory.java index bbc3eb7a82..4b46261571 100644 --- a/patterns/design-patterns/src/main/java/com/baeldung/creational/abstractfactory/AnimalFactory.java +++ b/patterns/design-patterns/src/main/java/com/baeldung/creational/abstractfactory/AnimalFactory.java @@ -1,9 +1,9 @@ package com.baeldung.creational.abstractfactory; -public class AnimalFactory implements AbstractFactory { +public class AnimalFactory implements AbstractFactory { @Override - public Animal getAnimal(String animalType) { + public Animal create(String animalType) { if ("Dog".equalsIgnoreCase(animalType)) { return new Dog(); } else if ("Duck".equalsIgnoreCase(animalType)) { @@ -13,9 +13,4 @@ public class AnimalFactory implements AbstractFactory { return null; } - @Override - public Color getColor(String color) { - throw new UnsupportedOperationException(); - } - } diff --git a/patterns/design-patterns/src/main/java/com/baeldung/creational/abstractfactory/ColorFactory.java b/patterns/design-patterns/src/main/java/com/baeldung/creational/abstractfactory/ColorFactory.java index 8b7e4f8086..3d9c5c18a3 100644 --- a/patterns/design-patterns/src/main/java/com/baeldung/creational/abstractfactory/ColorFactory.java +++ b/patterns/design-patterns/src/main/java/com/baeldung/creational/abstractfactory/ColorFactory.java @@ -1,9 +1,9 @@ package com.baeldung.creational.abstractfactory; -public class ColorFactory implements AbstractFactory { +public class ColorFactory implements AbstractFactory { @Override - public Color getColor(String colorType) { + public Color create(String colorType) { if ("Brown".equalsIgnoreCase(colorType)) { return new Brown(); } else if ("White".equalsIgnoreCase(colorType)) { @@ -13,9 +13,4 @@ public class ColorFactory implements AbstractFactory { return null; } - @Override - public Animal getAnimal(String toyType) { - throw new UnsupportedOperationException(); - } - } diff --git a/patterns/design-patterns/src/test/java/com/baeldung/creational/abstractfactory/AbstractPatternIntegrationTest.java b/patterns/design-patterns/src/test/java/com/baeldung/creational/abstractfactory/AbstractPatternIntegrationTest.java index 6d1a4ad8fd..4f02249a4b 100644 --- a/patterns/design-patterns/src/test/java/com/baeldung/creational/abstractfactory/AbstractPatternIntegrationTest.java +++ b/patterns/design-patterns/src/test/java/com/baeldung/creational/abstractfactory/AbstractPatternIntegrationTest.java @@ -11,10 +11,10 @@ public class AbstractPatternIntegrationTest { //creating a brown toy dog abstractFactory = FactoryProvider.getFactory("Toy"); - Animal toy = abstractFactory.getAnimal("Dog"); + Animal toy = (Animal) abstractFactory.create("Dog"); abstractFactory = FactoryProvider.getFactory("Color"); - Color color = abstractFactory.getColor("Brown"); + Color color =(Color) abstractFactory.create("Brown"); String result = "A " + toy.getType() + " with " + color.getColor() + " color " + toy.makeSound(); assertEquals("A Dog with brown color Barks", result); diff --git a/persistence-modules/hibernate5/README.md b/persistence-modules/hibernate5/README.md index 2b948a683a..03bdd9b759 100644 --- a/persistence-modules/hibernate5/README.md +++ b/persistence-modules/hibernate5/README.md @@ -23,3 +23,9 @@ - [Difference Between @JoinColumn and mappedBy](https://www.baeldung.com/jpa-joincolumn-vs-mappedby) - [Hibernate 5 Bootstrapping API](https://www.baeldung.com/hibernate-5-bootstrapping-api) - [Criteria Queries Using JPA Metamodel](https://www.baeldung.com/hibernate-criteria-queries-metamodel) +- [Guide to the Hibernate EntityManager](https://www.baeldung.com/hibernate-entitymanager) +- [Get All Data from a Table with Hibernate](https://www.baeldung.com/hibernate-select-all) +- [One-to-One Relationship in JPA](https://www.baeldung.com/jpa-one-to-one) +- [Hibernate Named Query](https://www.baeldung.com/hibernate-named-query) +- [Using c3p0 with Hibernate](https://www.baeldung.com/hibernate-c3p0) +- [Persist a JSON Object Using Hibernate](https://www.baeldung.com/hibernate-persist-json-object) diff --git a/persistence-modules/java-jpa/README.md b/persistence-modules/java-jpa/README.md index 9a90216519..2eea5e60b4 100644 --- a/persistence-modules/java-jpa/README.md +++ b/persistence-modules/java-jpa/README.md @@ -2,4 +2,5 @@ - [A Guide to SqlResultSetMapping](http://www.baeldung.com/jpa-sql-resultset-mapping) - [A Guide to Stored Procedures with JPA](http://www.baeldung.com/jpa-stored-procedures) -- [Fixing the JPA error “java.lang.String cannot be cast to [Ljava.lang.String;”](https://www.baeldung.com/jpa-error-java-lang-string-cannot-be-cast) +- [Fixing the JPA error “java.lang.String cannot be cast to Ljava.lang.String;”](https://www.baeldung.com/jpa-error-java-lang-string-cannot-be-cast) +- [JPA Entity Graph](https://www.baeldung.com/jpa-entity-graph) diff --git a/persistence-modules/spring-data-jpa/README.md b/persistence-modules/spring-data-jpa/README.md index 3c71600565..976a692699 100644 --- a/persistence-modules/spring-data-jpa/README.md +++ b/persistence-modules/spring-data-jpa/README.md @@ -18,6 +18,7 @@ - [Limiting Query Results with JPA and Spring Data JPA](https://www.baeldung.com/jpa-limit-query-results) - [Sorting Query Results with Spring Data](https://www.baeldung.com/spring-data-sorting) - [INSERT Statement in JPA](https://www.baeldung.com/jpa-insert) +- [Pagination and Sorting using Spring Data JPA](https://www.baeldung.com/spring-data-jpa-pagination-sorting) ### Eclipse Config After importing the project into Eclipse, you may see the following error: diff --git a/persistence-modules/spring-data-jpa/src/main/java/com/baeldung/dao/repositories/user/UserRepository.java b/persistence-modules/spring-data-jpa/src/main/java/com/baeldung/dao/repositories/user/UserRepository.java index 5bb0232e4a..7f54254832 100644 --- a/persistence-modules/spring-data-jpa/src/main/java/com/baeldung/dao/repositories/user/UserRepository.java +++ b/persistence-modules/spring-data-jpa/src/main/java/com/baeldung/dao/repositories/user/UserRepository.java @@ -1,6 +1,7 @@ package com.baeldung.dao.repositories.user; import com.baeldung.domain.user.User; + import org.springframework.data.domain.Page; import org.springframework.data.domain.Pageable; import org.springframework.data.domain.Sort; @@ -13,7 +14,7 @@ import java.util.Collection; import java.util.List; import java.util.stream.Stream; -public interface UserRepository extends JpaRepository { +public interface UserRepository extends JpaRepository , UserRepositoryCustom{ Stream findAllByName(String name); diff --git a/persistence-modules/spring-data-jpa/src/main/java/com/baeldung/dao/repositories/user/UserRepositoryCustom.java b/persistence-modules/spring-data-jpa/src/main/java/com/baeldung/dao/repositories/user/UserRepositoryCustom.java new file mode 100644 index 0000000000..72c1fd5d00 --- /dev/null +++ b/persistence-modules/spring-data-jpa/src/main/java/com/baeldung/dao/repositories/user/UserRepositoryCustom.java @@ -0,0 +1,10 @@ +package com.baeldung.dao.repositories.user; + +import java.util.List; +import java.util.Set; + +import com.baeldung.domain.user.User; + +public interface UserRepositoryCustom { + List findUserByEmails(Set emails); +} diff --git a/persistence-modules/spring-data-jpa/src/main/java/com/baeldung/dao/repositories/user/UserRepositoryCustomImpl.java b/persistence-modules/spring-data-jpa/src/main/java/com/baeldung/dao/repositories/user/UserRepositoryCustomImpl.java new file mode 100644 index 0000000000..9f841caf68 --- /dev/null +++ b/persistence-modules/spring-data-jpa/src/main/java/com/baeldung/dao/repositories/user/UserRepositoryCustomImpl.java @@ -0,0 +1,43 @@ +package com.baeldung.dao.repositories.user; + +import java.util.ArrayList; +import java.util.List; +import java.util.Set; + +import javax.persistence.EntityManager; +import javax.persistence.PersistenceContext; +import javax.persistence.criteria.CriteriaBuilder; +import javax.persistence.criteria.CriteriaQuery; +import javax.persistence.criteria.Path; +import javax.persistence.criteria.Predicate; +import javax.persistence.criteria.Root; + +import com.baeldung.domain.user.User; + +public class UserRepositoryCustomImpl implements UserRepositoryCustom { + + @PersistenceContext + private EntityManager entityManager; + + @Override + public List findUserByEmails(Set emails) { + CriteriaBuilder cb = entityManager.getCriteriaBuilder(); + CriteriaQuery query = cb.createQuery(User.class); + Root user = query.from(User.class); + + Path emailPath = user.get("email"); + + List predicates = new ArrayList<>(); + for (String email : emails) { + + predicates.add(cb.like(emailPath, email)); + + } + query.select(user) + .where(cb.or(predicates.toArray(new Predicate[predicates.size()]))); + + return entityManager.createQuery(query) + .getResultList(); + } + +} diff --git a/persistence-modules/spring-data-jpa/src/test/java/com/baeldung/dao/repositories/UserRepositoryIntegrationTest.java b/persistence-modules/spring-data-jpa/src/test/java/com/baeldung/dao/repositories/UserRepositoryIntegrationTest.java index e29161394b..b05086d00e 100644 --- a/persistence-modules/spring-data-jpa/src/test/java/com/baeldung/dao/repositories/UserRepositoryIntegrationTest.java +++ b/persistence-modules/spring-data-jpa/src/test/java/com/baeldung/dao/repositories/UserRepositoryIntegrationTest.java @@ -18,7 +18,9 @@ import org.springframework.test.context.junit4.SpringRunner; import org.springframework.transaction.annotation.Transactional; import java.util.Collection; +import java.util.HashSet; import java.util.List; +import java.util.Set; import java.util.stream.Stream; import static org.assertj.core.api.Assertions.assertThat; @@ -274,9 +276,8 @@ public class UserRepositoryIntegrationTest { List usersSortByName = userRepository.findAll(new Sort(Sort.Direction.ASC, "name")); - assertThat(usersSortByName - .get(0) - .getName()).isEqualTo(USER_NAME_ADAM); + assertThat(usersSortByName.get(0) + .getName()).isEqualTo(USER_NAME_ADAM); } @Test(expected = PropertyReferenceException.class) @@ -289,9 +290,8 @@ public class UserRepositoryIntegrationTest { List usersSortByNameLength = userRepository.findAll(new Sort("LENGTH(name)")); - assertThat(usersSortByNameLength - .get(0) - .getName()).isEqualTo(USER_NAME_ADAM); + assertThat(usersSortByNameLength.get(0) + .getName()).isEqualTo(USER_NAME_ADAM); } @Test @@ -304,9 +304,8 @@ public class UserRepositoryIntegrationTest { List usersSortByNameLength = userRepository.findAllUsers(JpaSort.unsafe("LENGTH(name)")); - assertThat(usersSortByNameLength - .get(0) - .getName()).isEqualTo(USER_NAME_ADAM); + assertThat(usersSortByNameLength.get(0) + .getName()).isEqualTo(USER_NAME_ADAM); } @Test @@ -320,10 +319,9 @@ public class UserRepositoryIntegrationTest { Page usersPage = userRepository.findAllUsersWithPagination(new PageRequest(1, 3)); - assertThat(usersPage - .getContent() - .get(0) - .getName()).isEqualTo("SAMPLE1"); + assertThat(usersPage.getContent() + .get(0) + .getName()).isEqualTo("SAMPLE1"); } @Test @@ -337,10 +335,9 @@ public class UserRepositoryIntegrationTest { Page usersSortByNameLength = userRepository.findAllUsersWithPaginationNative(new PageRequest(1, 3)); - assertThat(usersSortByNameLength - .getContent() - .get(0) - .getName()).isEqualTo("SAMPLE1"); + assertThat(usersSortByNameLength.getContent() + .get(0) + .getName()).isEqualTo("SAMPLE1"); } @Test @@ -370,6 +367,30 @@ public class UserRepositoryIntegrationTest { assertThat(updatedUsersSize).isEqualTo(2); } + @Test + public void givenUsersInDBWhenFindByEmailsWithDynamicQueryThenReturnCollection() { + + User user1 = new User(); + user1.setEmail(USER_EMAIL); + userRepository.save(user1); + + User user2 = new User(); + user2.setEmail(USER_EMAIL2); + userRepository.save(user2); + + User user3 = new User(); + user3.setEmail(USER_EMAIL3); + userRepository.save(user3); + + Set emails = new HashSet<>(); + emails.add(USER_EMAIL2); + emails.add(USER_EMAIL3); + + Collection usersWithEmails = userRepository.findUserByEmails(emails); + + assertThat(usersWithEmails.size()).isEqualTo(2); + } + @After public void cleanUp() { userRepository.deleteAll(); diff --git a/pom.xml b/pom.xml index 923cbab302..a9b4b3f119 100644 --- a/pom.xml +++ b/pom.xml @@ -232,6 +232,7 @@ ${maven-war-plugin.version} + com.vackosar.gitflowincrementalbuilder @@ -383,6 +384,7 @@ core-java-concurrency-basic core-java-concurrency-collections core-java-io + core-java-security core-java-lang-syntax core-java-lang core-java-lang-oop @@ -435,7 +437,7 @@ java-collections-conversions java-collections-maps - java-ee-8-security-api + java-lite java-numbers java-rmi @@ -643,6 +645,7 @@ spring-boot-logging-log4j2 spring-boot-mvc spring-boot-ops + spring-boot-rest spring-boot-property-exp spring-boot-security spring-boot-testing @@ -662,6 +665,7 @@ spring-dispatcher-servlet spring-drools + spring-ehcache spring-ejb spring-exceptions @@ -881,6 +885,7 @@ spring-data-rest spring-dispatcher-servlet spring-drools + spring-ehcache spring-freemarker persistence-modules/spring-hibernate-3 persistence-modules/spring-hibernate4 @@ -1095,6 +1100,7 @@ core-java-concurrency-basic core-java-concurrency-collections core-java-io + core-java-security core-java-lang-syntax core-java-lang core-java-lang-oop @@ -1351,6 +1357,7 @@ spring-boot-logging-log4j2 spring-boot-mvc spring-boot-ops + spring-boot-rest spring-boot-property-exp spring-boot-security spring-boot-vue @@ -1368,6 +1375,7 @@ spring-dispatcher-servlet spring-drools + spring-ehcache spring-ejb spring-exceptions diff --git a/spring-5-reactive-oauth/src/main/java/com/baeldung/reactive/oauth/Spring5ReactiveOauthApplication.java b/spring-5-reactive-oauth/src/main/java/com/baeldung/reactive/oauth/Spring5ReactiveOauthApplication.java index 602ded6b9e..b95517200e 100644 --- a/spring-5-reactive-oauth/src/main/java/com/baeldung/reactive/oauth/Spring5ReactiveOauthApplication.java +++ b/spring-5-reactive-oauth/src/main/java/com/baeldung/reactive/oauth/Spring5ReactiveOauthApplication.java @@ -3,11 +3,13 @@ package com.baeldung.reactive.oauth; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.context.annotation.Bean; +import org.springframework.context.annotation.PropertySource; import org.springframework.security.oauth2.client.registration.ReactiveClientRegistrationRepository; import org.springframework.security.oauth2.client.web.reactive.function.client.ServerOAuth2AuthorizedClientExchangeFilterFunction; import org.springframework.security.oauth2.client.web.server.ServerOAuth2AuthorizedClientRepository; import org.springframework.web.reactive.function.client.WebClient; +@PropertySource("classpath:default-application.yml") @SpringBootApplication public class Spring5ReactiveOauthApplication { diff --git a/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/authorizationcodeclient/OauthClientApplication.java b/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/authorizationcodeclient/OauthClientApplication.java new file mode 100644 index 0000000000..7bae78bb14 --- /dev/null +++ b/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/authorizationcodeclient/OauthClientApplication.java @@ -0,0 +1,24 @@ +package com.baeldung.webclient.authorizationcodeclient; + +import org.springframework.boot.SpringApplication; +import org.springframework.boot.autoconfigure.SpringBootApplication; +import org.springframework.context.annotation.PropertySource; + +/** + * + * Note: This app is configured to use the authorization service and the resource service located in module spring-5-security-oauth + * + * As we usually do with other well-known auth providers (github/facebook/...) we have to log-in using user credentials (bael-user/bael-password) and client configurations (bael-client-id/bael-secret) handled by the auth server + * + * @author rozagerardo + * + */ +@PropertySource("classpath:webclient-auth-code-client-application.properties") +@SpringBootApplication +public class OauthClientApplication { + + public static void main(String[] args) { + SpringApplication.run(OauthClientApplication.class, args); + } + +} diff --git a/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/authorizationcodeclient/configuration/WebClientConfig.java b/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/authorizationcodeclient/configuration/WebClientConfig.java new file mode 100644 index 0000000000..884a3c145d --- /dev/null +++ b/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/authorizationcodeclient/configuration/WebClientConfig.java @@ -0,0 +1,20 @@ +package com.baeldung.webclient.authorizationcodeclient.configuration; + +import org.springframework.context.annotation.Bean; +import org.springframework.context.annotation.Configuration; +import org.springframework.security.oauth2.client.registration.ReactiveClientRegistrationRepository; +import org.springframework.security.oauth2.client.web.reactive.function.client.ServerOAuth2AuthorizedClientExchangeFilterFunction; +import org.springframework.security.oauth2.client.web.server.ServerOAuth2AuthorizedClientRepository; +import org.springframework.web.reactive.function.client.WebClient; + +@Configuration +public class WebClientConfig { + + @Bean + WebClient webClientForAuthorized(ReactiveClientRegistrationRepository clientRegistrations, ServerOAuth2AuthorizedClientRepository authorizedClients) { + ServerOAuth2AuthorizedClientExchangeFilterFunction oauth = new ServerOAuth2AuthorizedClientExchangeFilterFunction(clientRegistrations, authorizedClients); + return WebClient.builder() + .filter(oauth) + .build(); + } +} diff --git a/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/authorizationcodeclient/configuration/WebSecurityConfig.java b/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/authorizationcodeclient/configuration/WebSecurityConfig.java new file mode 100644 index 0000000000..4271ae96cf --- /dev/null +++ b/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/authorizationcodeclient/configuration/WebSecurityConfig.java @@ -0,0 +1,22 @@ +package com.baeldung.webclient.authorizationcodeclient.configuration; + +import org.springframework.context.annotation.Bean; +import org.springframework.context.annotation.Configuration; +import org.springframework.security.config.web.server.ServerHttpSecurity; +import org.springframework.security.web.server.SecurityWebFilterChain; + +@Configuration +public class WebSecurityConfig { + @Bean + public SecurityWebFilterChain springSecurityFilterChain(ServerHttpSecurity http) { + http.authorizeExchange() + .anyExchange() + .authenticated() + .and() + .oauth2Client() + .and() + .formLogin(); + return http.build(); + } + +} diff --git a/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/authorizationcodeclient/web/ClientRestController.java b/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/authorizationcodeclient/web/ClientRestController.java new file mode 100644 index 0000000000..c36b7d1dea --- /dev/null +++ b/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/authorizationcodeclient/web/ClientRestController.java @@ -0,0 +1,53 @@ +package com.baeldung.webclient.authorizationcodeclient.web; + +import static org.springframework.security.oauth2.client.web.reactive.function.client.ServerOAuth2AuthorizedClientExchangeFilterFunction.clientRegistrationId; +import static org.springframework.security.oauth2.client.web.reactive.function.client.ServerOAuth2AuthorizedClientExchangeFilterFunction.oauth2AuthorizedClient; + +import org.springframework.beans.factory.annotation.Autowired; +import org.springframework.security.oauth2.client.OAuth2AuthorizedClient; +import org.springframework.security.oauth2.client.annotation.RegisteredOAuth2AuthorizedClient; +import org.springframework.web.bind.annotation.GetMapping; +import org.springframework.web.bind.annotation.RestController; +import org.springframework.web.reactive.function.client.WebClient; + +import reactor.core.publisher.Mono; + +@RestController +public class ClientRestController { + + private static final String RESOURCE_URI = "http://localhost:8084/retrieve-resource"; + + @Autowired + WebClient webClient; + + @GetMapping("/auth-code") + Mono useOauthWithAuthCode() { + Mono retrievedResource = webClient.get() + .uri(RESOURCE_URI) + .retrieve() + .bodyToMono(String.class); + return retrievedResource.map(string -> "We retrieved the following resource using Oauth: " + string); + } + + @GetMapping("/auth-code-annotated") + Mono useOauthWithAuthCodeAndAnnotation(@RegisteredOAuth2AuthorizedClient("bael") OAuth2AuthorizedClient authorizedClient) { + Mono retrievedResource = webClient.get() + .uri(RESOURCE_URI) + .attributes(oauth2AuthorizedClient(authorizedClient)) + .retrieve() + .bodyToMono(String.class); + return retrievedResource.map(string -> "We retrieved the following resource using Oauth: " + string + ". Principal associated: " + authorizedClient.getPrincipalName() + ". Token will expire at: " + authorizedClient.getAccessToken() + .getExpiresAt()); + } + + @GetMapping("/auth-code-explicit-client") + Mono useOauthWithExpicitClient() { + Mono retrievedResource = webClient.get() + .uri(RESOURCE_URI) + .attributes(clientRegistrationId("bael")) + .retrieve() + .bodyToMono(String.class); + return retrievedResource.map(string -> "We retrieved the following resource using Oauth: " + string); + } + +} diff --git a/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/authorizationcodelogin/OauthClientApplication.java b/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/authorizationcodelogin/OauthClientApplication.java new file mode 100644 index 0000000000..9dd6dd1bde --- /dev/null +++ b/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/authorizationcodelogin/OauthClientApplication.java @@ -0,0 +1,24 @@ +package com.baeldung.webclient.authorizationcodelogin; + +import org.springframework.boot.SpringApplication; +import org.springframework.boot.autoconfigure.SpringBootApplication; +import org.springframework.context.annotation.PropertySource; + +/** + * + * Note: This app is configured to use the authorization service and the resource service located in module spring-5-security-oauth + * + * As we usually do with other well-known auth providers (github/facebook/...) we have to log-in using user credentials (bael-user/bael-password) and client configurations (bael-client-id/bael-secret) handled by the auth server + * + * @author rozagerardo + * + */ +@PropertySource("classpath:webclient-auth-code-login-application.properties") +@SpringBootApplication +public class OauthClientApplication { + + public static void main(String[] args) { + SpringApplication.run(OauthClientApplication.class, args); + } + +} diff --git a/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/authorizationcodelogin/configuration/WebClientConfig.java b/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/authorizationcodelogin/configuration/WebClientConfig.java new file mode 100644 index 0000000000..15458cc60a --- /dev/null +++ b/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/authorizationcodelogin/configuration/WebClientConfig.java @@ -0,0 +1,31 @@ +package com.baeldung.webclient.authorizationcodelogin.configuration; + +import org.springframework.context.annotation.Bean; +import org.springframework.context.annotation.Configuration; +import org.springframework.context.annotation.Primary; +import org.springframework.security.oauth2.client.registration.ReactiveClientRegistrationRepository; +import org.springframework.security.oauth2.client.web.reactive.function.client.ServerOAuth2AuthorizedClientExchangeFilterFunction; +import org.springframework.security.oauth2.client.web.server.ServerOAuth2AuthorizedClientRepository; +import org.springframework.web.reactive.function.client.WebClient; + +@Configuration +public class WebClientConfig { + + @Bean + @Primary + WebClient webClientForAuthorized(ReactiveClientRegistrationRepository clientRegistrations, ServerOAuth2AuthorizedClientRepository authorizedClients) { + ServerOAuth2AuthorizedClientExchangeFilterFunction oauth = new ServerOAuth2AuthorizedClientExchangeFilterFunction(clientRegistrations, authorizedClients); + oauth.setDefaultOAuth2AuthorizedClient(true); + return WebClient.builder() + .filter(oauth) + .build(); + } + + @Bean + WebClient otherWebClient(ReactiveClientRegistrationRepository clientRegistrations, ServerOAuth2AuthorizedClientRepository authorizedClients) { + ServerOAuth2AuthorizedClientExchangeFilterFunction oauth = new ServerOAuth2AuthorizedClientExchangeFilterFunction(clientRegistrations, authorizedClients); + return WebClient.builder() + .filter(oauth) + .build(); + } +} diff --git a/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/authorizationcodelogin/configuration/WebSecurityConfig.java b/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/authorizationcodelogin/configuration/WebSecurityConfig.java new file mode 100644 index 0000000000..f45fc09222 --- /dev/null +++ b/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/authorizationcodelogin/configuration/WebSecurityConfig.java @@ -0,0 +1,20 @@ +package com.baeldung.webclient.authorizationcodelogin.configuration; + +import org.springframework.context.annotation.Bean; +import org.springframework.context.annotation.Configuration; +import org.springframework.security.config.web.server.ServerHttpSecurity; +import org.springframework.security.web.server.SecurityWebFilterChain; + +@Configuration +public class WebSecurityConfig { + @Bean + public SecurityWebFilterChain springSecurityFilterChain(ServerHttpSecurity http) { + http.authorizeExchange() + .anyExchange() + .authenticated() + .and() + .oauth2Login(); + return http.build(); + } + +} diff --git a/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/authorizationcodelogin/web/ClientRestController.java b/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/authorizationcodelogin/web/ClientRestController.java new file mode 100644 index 0000000000..55e0096525 --- /dev/null +++ b/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/authorizationcodelogin/web/ClientRestController.java @@ -0,0 +1,68 @@ +package com.baeldung.webclient.authorizationcodelogin.web; + +import static org.springframework.security.oauth2.client.web.reactive.function.client.ServerOAuth2AuthorizedClientExchangeFilterFunction.clientRegistrationId; +import static org.springframework.security.oauth2.client.web.reactive.function.client.ServerOAuth2AuthorizedClientExchangeFilterFunction.oauth2AuthorizedClient; + +import org.springframework.beans.factory.annotation.Autowired; +import org.springframework.beans.factory.annotation.Qualifier; +import org.springframework.security.oauth2.client.OAuth2AuthorizedClient; +import org.springframework.security.oauth2.client.annotation.RegisteredOAuth2AuthorizedClient; +import org.springframework.web.bind.annotation.GetMapping; +import org.springframework.web.bind.annotation.RestController; +import org.springframework.web.reactive.function.client.WebClient; + +import reactor.core.publisher.Mono; + +@RestController +public class ClientRestController { + + private static final String RESOURCE_URI = "http://localhost:8084/retrieve-resource"; + + @Autowired + WebClient webClient; + + @Autowired + @Qualifier("otherWebClient") + WebClient otherWebClient; + + @GetMapping("/auth-code") + Mono useOauthWithAuthCode() { + Mono retrievedResource = webClient.get() + .uri(RESOURCE_URI) + .retrieve() + .bodyToMono(String.class); + return retrievedResource.map(string -> "We retrieved the following resource using Oauth: " + string); + } + + @GetMapping("/auth-code-no-client") + Mono useOauthWithNoClient() { + // This call will fail, since we don't have the client properly set for this webClient + Mono retrievedResource = otherWebClient.get() + .uri(RESOURCE_URI) + .retrieve() + .bodyToMono(String.class); + return retrievedResource.map(string -> "We retrieved the following resource using Oauth: " + string); + } + + @GetMapping("/auth-code-annotated") + Mono useOauthWithAuthCodeAndAnnotation(@RegisteredOAuth2AuthorizedClient("bael") OAuth2AuthorizedClient authorizedClient) { + Mono retrievedResource = otherWebClient.get() + .uri(RESOURCE_URI) + .attributes(oauth2AuthorizedClient(authorizedClient)) + .retrieve() + .bodyToMono(String.class); + return retrievedResource.map(string -> "We retrieved the following resource using Oauth: " + string + ". Principal associated: " + authorizedClient.getPrincipalName() + ". Token will expire at: " + authorizedClient.getAccessToken() + .getExpiresAt()); + } + + @GetMapping("/auth-code-explicit-client") + Mono useOauthWithExpicitClient() { + Mono retrievedResource = otherWebClient.get() + .uri(RESOURCE_URI) + .attributes(clientRegistrationId("bael")) + .retrieve() + .bodyToMono(String.class); + return retrievedResource.map(string -> "We retrieved the following resource using Oauth: " + string); + } + +} diff --git a/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/clientcredentials/ClientCredentialsOauthApplication.java b/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/clientcredentials/ClientCredentialsOauthApplication.java new file mode 100644 index 0000000000..d1b9f7f744 --- /dev/null +++ b/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/clientcredentials/ClientCredentialsOauthApplication.java @@ -0,0 +1,26 @@ +package com.baeldung.webclient.clientcredentials; + +import org.springframework.boot.SpringApplication; +import org.springframework.boot.autoconfigure.SpringBootApplication; +import org.springframework.context.annotation.PropertySource; +import org.springframework.scheduling.annotation.EnableScheduling; + +/** + * + * Note: This app is configured to use the authorization service and the resource service located in module spring-5-security-oauth + * + * As we usually do with other well-known auth providers (github/facebook/...) we have to log-in using credentials handled by the auth server (bael-user/bael-password) + * + * @author rozagerardo + * + */ +@PropertySource("classpath:webclient-client-credentials-oauth-application.properties") +@EnableScheduling +@SpringBootApplication +public class ClientCredentialsOauthApplication { + + public static void main(String[] args) { + SpringApplication.run(ClientCredentialsOauthApplication.class, args); + } + +} diff --git a/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/clientcredentials/configuration/WebClientConfig.java b/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/clientcredentials/configuration/WebClientConfig.java new file mode 100644 index 0000000000..8ffc92b4cd --- /dev/null +++ b/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/clientcredentials/configuration/WebClientConfig.java @@ -0,0 +1,22 @@ +package com.baeldung.webclient.clientcredentials.configuration; + +import org.springframework.context.annotation.Bean; +import org.springframework.context.annotation.Configuration; +import org.springframework.security.oauth2.client.registration.ReactiveClientRegistrationRepository; +import org.springframework.security.oauth2.client.web.reactive.function.client.ServerOAuth2AuthorizedClientExchangeFilterFunction; +import org.springframework.security.oauth2.client.web.server.UnAuthenticatedServerOAuth2AuthorizedClientRepository; +import org.springframework.web.reactive.function.client.WebClient; + +@Configuration +public class WebClientConfig { + + @Bean + WebClient webClient(ReactiveClientRegistrationRepository clientRegistrations) { + ServerOAuth2AuthorizedClientExchangeFilterFunction oauth = new ServerOAuth2AuthorizedClientExchangeFilterFunction(clientRegistrations, new UnAuthenticatedServerOAuth2AuthorizedClientRepository()); + oauth.setDefaultClientRegistrationId("bael"); + return WebClient.builder() + .filter(oauth) + .build(); + } + +} diff --git a/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/clientcredentials/service/WebClientChonJob.java b/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/clientcredentials/service/WebClientChonJob.java new file mode 100644 index 0000000000..dc38ce3f9e --- /dev/null +++ b/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/clientcredentials/service/WebClientChonJob.java @@ -0,0 +1,33 @@ +package com.baeldung.webclient.clientcredentials.service; + +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; +import org.springframework.beans.factory.annotation.Autowired; +import org.springframework.scheduling.annotation.Scheduled; +import org.springframework.security.oauth2.client.OAuth2AuthorizedClient; +import org.springframework.security.oauth2.client.annotation.RegisteredOAuth2AuthorizedClient; +import org.springframework.stereotype.Component; +import org.springframework.web.reactive.function.client.WebClient; + +@Component +public class WebClientChonJob { + + Logger logger = LoggerFactory.getLogger(WebClientChonJob.class); + + private static final String RESOURCE_URI = "http://localhost:8084/retrieve-resource"; + + @Autowired + private WebClient webClient; + + @Scheduled(fixedRate = 1000) + public void logResourceServiceResponse() { + + webClient.get() + .uri(RESOURCE_URI) + .retrieve() + .bodyToMono(String.class) + .map(string -> "We retrieved the following resource using Client Credentials Grant Type: " + string) + .subscribe(logger::info); + } + +} diff --git a/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/manualrequest/ManualRequestApplication.java b/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/manualrequest/ManualRequestApplication.java new file mode 100644 index 0000000000..c2762ad559 --- /dev/null +++ b/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/manualrequest/ManualRequestApplication.java @@ -0,0 +1,23 @@ +package com.baeldung.webclient.manualrequest; + +import org.springframework.boot.SpringApplication; +import org.springframework.boot.autoconfigure.SpringBootApplication; +import org.springframework.context.annotation.PropertySource; + +/** + * + * Note: This app is configured to use the authorization service and the resource service located in module spring-5-security-oauth + * + * As we usually do with other well-known auth providers (github/facebook/...) we have to log-in using user credentials (bael-user/bael-password) and client configurations (bael-client-id/bael-secret) handled by the auth server + * + * @author rozagerardo + * + */ +@SpringBootApplication +public class ManualRequestApplication { + + public static void main(String[] args) { + SpringApplication.run(ManualRequestApplication.class, args); + } + +} diff --git a/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/manualrequest/configure/WebClientConfig.java b/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/manualrequest/configure/WebClientConfig.java new file mode 100644 index 0000000000..51fc60821a --- /dev/null +++ b/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/manualrequest/configure/WebClientConfig.java @@ -0,0 +1,16 @@ +package com.baeldung.webclient.manualrequest.configure; + +import org.springframework.context.annotation.Bean; +import org.springframework.context.annotation.Configuration; +import org.springframework.web.reactive.function.client.WebClient; + +@Configuration +public class WebClientConfig { + + @Bean + public WebClient configureWebClient() { + return WebClient.builder() + .build(); + }; + +} diff --git a/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/manualrequest/configure/WebSecurityConfig.java b/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/manualrequest/configure/WebSecurityConfig.java new file mode 100644 index 0000000000..1753681db8 --- /dev/null +++ b/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/manualrequest/configure/WebSecurityConfig.java @@ -0,0 +1,17 @@ +package com.baeldung.webclient.manualrequest.configure; + +import org.springframework.context.annotation.Bean; +import org.springframework.context.annotation.Configuration; +import org.springframework.security.config.web.server.ServerHttpSecurity; +import org.springframework.security.web.server.SecurityWebFilterChain; + +@Configuration +public class WebSecurityConfig { + @Bean + public SecurityWebFilterChain springSecurityFilterChain(ServerHttpSecurity http) { + http.authorizeExchange() + .anyExchange() + .permitAll(); + return http.build(); + } +} diff --git a/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/manualrequest/web/ManualOauthRequestController.java b/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/manualrequest/web/ManualOauthRequestController.java new file mode 100644 index 0000000000..9f9d6d3167 --- /dev/null +++ b/spring-5-reactive-oauth/src/main/java/com/baeldung/webclient/manualrequest/web/ManualOauthRequestController.java @@ -0,0 +1,57 @@ +package com.baeldung.webclient.manualrequest.web; + +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; +import org.springframework.beans.factory.annotation.Autowired; +import org.springframework.http.HttpHeaders; +import org.springframework.http.MediaType; +import org.springframework.security.oauth2.core.endpoint.OAuth2ParameterNames; +import org.springframework.util.Base64Utils; +import org.springframework.web.bind.annotation.GetMapping; +import org.springframework.web.bind.annotation.RestController; +import org.springframework.web.reactive.function.BodyInserters; +import org.springframework.web.reactive.function.client.WebClient; + +import com.fasterxml.jackson.databind.JsonNode; +import com.nimbusds.oauth2.sdk.GrantType; + +import reactor.core.publisher.Mono; + +@RestController +public class ManualOauthRequestController { + + private static Logger logger = LoggerFactory.getLogger(ManualOauthRequestController.class); + + private static final String TOKEN_ENDPOINT = "localhost:8085/oauth/token"; + private static final String RESOURCE_ENDPOINT = "localhost:8084/retrieve-resource"; + private static final String CLIENT_ID = "bael-client-id"; + private static final String CLIENT_SECRET = "bael-secret"; + + @Autowired + WebClient client; + + @GetMapping("/manual-request-oauth") + public Mono obtainSecuredResource() { + logger.info("Creating web client..."); + Mono resource = client.post() + .uri(TOKEN_ENDPOINT) + .header(HttpHeaders.AUTHORIZATION, "Basic " + Base64Utils.encodeToString((CLIENT_ID + ":" + CLIENT_SECRET).getBytes())) + .body(BodyInserters.fromFormData(OAuth2ParameterNames.GRANT_TYPE, GrantType.CLIENT_CREDENTIALS.getValue())) + .retrieve() + .bodyToMono(JsonNode.class) + .flatMap(tokenResponse -> { + String accessTokenValue = tokenResponse.get("access_token") + .textValue(); + logger.info("Retrieved the following access token: {}", accessTokenValue); + return client.get() + .uri(RESOURCE_ENDPOINT) + .headers(h -> h.setBearerAuth(accessTokenValue)) + .retrieve() + .bodyToMono(String.class); + }); + logger.info("non-blocking Oauth calls registered..."); + return resource.map(res -> "Retrieved the resource using a manual approach: " + res); + + } + +} diff --git a/spring-5-reactive-oauth/src/main/resources/application.yml b/spring-5-reactive-oauth/src/main/resources/application.yml index e35e19b344..bec62fdd33 100644 --- a/spring-5-reactive-oauth/src/main/resources/application.yml +++ b/spring-5-reactive-oauth/src/main/resources/application.yml @@ -1,20 +1,3 @@ -spring: - security: - oauth2: - client: - registration: - google: - client-id: YOUR_APP_CLIENT_ID - client-secret: YOUR_APP_CLIENT_SECRET - custom: - client-id: fooClientIdPassword - client-secret: secret - scopes: read,foo - authorization-grant-type: authorization_code - redirect-uri-template: http://localhost:8080/login/oauth2/code/custom - provider: - custom: - authorization-uri: http://localhost:8081/spring-security-oauth-server/oauth/authorize - token-uri: http://localhost:8081/spring-security-oauth-server/oauth/token - user-info-uri: http://localhost:8088/spring-security-oauth-resource/users/extra - user-name-attribute: user_name \ No newline at end of file +logging: + level: + root: DEBUG \ No newline at end of file diff --git a/spring-5-reactive-oauth/src/main/resources/default-application.yml b/spring-5-reactive-oauth/src/main/resources/default-application.yml new file mode 100644 index 0000000000..e35e19b344 --- /dev/null +++ b/spring-5-reactive-oauth/src/main/resources/default-application.yml @@ -0,0 +1,20 @@ +spring: + security: + oauth2: + client: + registration: + google: + client-id: YOUR_APP_CLIENT_ID + client-secret: YOUR_APP_CLIENT_SECRET + custom: + client-id: fooClientIdPassword + client-secret: secret + scopes: read,foo + authorization-grant-type: authorization_code + redirect-uri-template: http://localhost:8080/login/oauth2/code/custom + provider: + custom: + authorization-uri: http://localhost:8081/spring-security-oauth-server/oauth/authorize + token-uri: http://localhost:8081/spring-security-oauth-server/oauth/token + user-info-uri: http://localhost:8088/spring-security-oauth-resource/users/extra + user-name-attribute: user_name \ No newline at end of file diff --git a/spring-5-reactive-oauth/src/main/resources/webclient-auth-code-client-application.properties b/spring-5-reactive-oauth/src/main/resources/webclient-auth-code-client-application.properties new file mode 100644 index 0000000000..612777a06d --- /dev/null +++ b/spring-5-reactive-oauth/src/main/resources/webclient-auth-code-client-application.properties @@ -0,0 +1,10 @@ +spring.security.oauth2.client.registration.bael.client-name=bael +spring.security.oauth2.client.registration.bael.client-id=bael-client-id +spring.security.oauth2.client.registration.bael.client-secret=bael-secret +spring.security.oauth2.client.registration.bael.authorization-grant-type=authorization_code +spring.security.oauth2.client.registration.bael.redirect-uri=http://localhost:8080/authorize/oauth2/code/bael + +spring.security.oauth2.client.provider.bael.token-uri=http://localhost:8085/oauth/token +spring.security.oauth2.client.provider.bael.authorization-uri=http://localhost:8085/oauth/authorize + +spring.security.user.password=pass diff --git a/spring-5-reactive-oauth/src/main/resources/webclient-auth-code-login-application.properties b/spring-5-reactive-oauth/src/main/resources/webclient-auth-code-login-application.properties new file mode 100644 index 0000000000..edd5b80b13 --- /dev/null +++ b/spring-5-reactive-oauth/src/main/resources/webclient-auth-code-login-application.properties @@ -0,0 +1,10 @@ +spring.security.oauth2.client.registration.bael.client-name=bael +spring.security.oauth2.client.registration.bael.client-id=bael-client-id +spring.security.oauth2.client.registration.bael.client-secret=bael-secret +spring.security.oauth2.client.registration.bael.authorization-grant-type=authorization_code +spring.security.oauth2.client.registration.bael.redirect-uri=http://localhost:8080/login/oauth2/code/bael + +spring.security.oauth2.client.provider.bael.token-uri=http://localhost:8085/oauth/token +spring.security.oauth2.client.provider.bael.authorization-uri=http://localhost:8085/oauth/authorize +spring.security.oauth2.client.provider.bael.user-info-uri=http://localhost:8084/user +spring.security.oauth2.client.provider.bael.user-name-attribute=name diff --git a/spring-5-reactive-oauth/src/main/resources/webclient-client-credentials-oauth-application.properties b/spring-5-reactive-oauth/src/main/resources/webclient-client-credentials-oauth-application.properties new file mode 100644 index 0000000000..f82f74ec48 --- /dev/null +++ b/spring-5-reactive-oauth/src/main/resources/webclient-client-credentials-oauth-application.properties @@ -0,0 +1,4 @@ +spring.security.oauth2.client.registration.bael.authorization-grant-type=client_credentials +spring.security.oauth2.client.registration.bael.client-id=bael-client-id +spring.security.oauth2.client.registration.bael.client-secret=bael-secret +spring.security.oauth2.client.provider.bael.token-uri=http://localhost:8085/oauth/token diff --git a/spring-5-reactive-oauth/src/test/java/com/baeldung/webclient/clientcredentials/OAuth2ClientCredentialsLiveTest.java b/spring-5-reactive-oauth/src/test/java/com/baeldung/webclient/clientcredentials/OAuth2ClientCredentialsLiveTest.java new file mode 100644 index 0000000000..e31815c3f8 --- /dev/null +++ b/spring-5-reactive-oauth/src/test/java/com/baeldung/webclient/clientcredentials/OAuth2ClientCredentialsLiveTest.java @@ -0,0 +1,52 @@ +package com.baeldung.webclient.clientcredentials; + +import static org.assertj.core.api.Assertions.assertThat; + +import java.util.Collection; +import java.util.stream.Collectors; + +import org.junit.Before; +import org.junit.Test; +import org.junit.runner.RunWith; +import org.springframework.beans.factory.annotation.Autowired; +import org.springframework.boot.test.context.SpringBootTest; +import org.springframework.test.context.junit4.SpringRunner; + +import com.baeldung.webclient.clientcredentials.service.WebClientChonJob; +import com.baeldung.webclient.utils.ListAppender; + +import ch.qos.logback.classic.spi.ILoggingEvent; + +/** + * + * Note: this Live test requires the Authorization Service and the Resource service located in the spring-5-security-oauth module + * + * @author ger + * + */ +@RunWith(SpringRunner.class) +@SpringBootTest(classes = { ClientCredentialsOauthApplication.class }) +public class OAuth2ClientCredentialsLiveTest { + + @Autowired + WebClientChonJob service; + + @Before + public void clearLogList() { + ListAppender.clearEventList(); + } + + @Test + public void givenFooWithNullId_whenProcessFoo_thenLogsWithDebugTrace() throws Exception { + service.logResourceServiceResponse(); + + Thread.sleep(3000); + + Collection allLoggedEntries = ListAppender.getEvents() + .stream() + .map(ILoggingEvent::getFormattedMessage) + .collect(Collectors.toList()); + assertThat(allLoggedEntries).anyMatch(entry -> entry.contains("We retrieved the following resource using Client Credentials Grant Type: This is the resource!")); + } + +} diff --git a/spring-5-reactive-oauth/src/test/java/com/baeldung/webclient/manualrequest/OAuth2ManualRequestLiveTest.java b/spring-5-reactive-oauth/src/test/java/com/baeldung/webclient/manualrequest/OAuth2ManualRequestLiveTest.java new file mode 100644 index 0000000000..94aa580f0a --- /dev/null +++ b/spring-5-reactive-oauth/src/test/java/com/baeldung/webclient/manualrequest/OAuth2ManualRequestLiveTest.java @@ -0,0 +1,43 @@ +package com.baeldung.webclient.manualrequest; + +import org.junit.Before; +import org.junit.Test; +import org.springframework.test.web.reactive.server.WebTestClient; +import org.springframework.test.web.reactive.server.WebTestClient.ResponseSpec; + +/** + * + * Note: this Live test requires not only the corresponding application running, + * but also the Authorization Service and the Resource service located in the spring-5-security-oauth module. + * + * + * @author ger + * + */ +public class OAuth2ManualRequestLiveTest { + + private static final String BASE_URL = "http://localhost:8080"; + private static final String MANUAL_REQUEST_URI = "/manual-request-oauth"; + + private static WebTestClient client; + + @Before + public void setup() { + client = WebTestClient.bindToServer() + .baseUrl(BASE_URL) + .build(); + } + + @Test + public void whenRequestingDebugHookOn_thenObtainExpectedMessage() { + ResponseSpec response = client.get() + .uri(MANUAL_REQUEST_URI) + .exchange(); + + response.expectStatus() + .isOk() + .expectBody(String.class) + .isEqualTo("Retrieved the resource using a manual approach: This is the resource!"); + } + +} diff --git a/spring-5-reactive-oauth/src/test/java/com/baeldung/webclient/utils/ListAppender.java b/spring-5-reactive-oauth/src/test/java/com/baeldung/webclient/utils/ListAppender.java new file mode 100644 index 0000000000..6f8fbe004a --- /dev/null +++ b/spring-5-reactive-oauth/src/test/java/com/baeldung/webclient/utils/ListAppender.java @@ -0,0 +1,25 @@ +package com.baeldung.webclient.utils; + +import java.util.ArrayList; +import java.util.List; + +import ch.qos.logback.classic.spi.ILoggingEvent; +import ch.qos.logback.core.AppenderBase; + +public class ListAppender extends AppenderBase { + + static private List events = new ArrayList<>(); + + @Override + protected void append(ILoggingEvent eventObject) { + events.add(eventObject); + } + + public static List getEvents() { + return events; + } + + public static void clearEventList() { + events.clear(); + } +} \ No newline at end of file diff --git a/spring-5-reactive-oauth/src/test/resources/logback-test.xml b/spring-5-reactive-oauth/src/test/resources/logback-test.xml new file mode 100644 index 0000000000..891c54bfd3 --- /dev/null +++ b/spring-5-reactive-oauth/src/test/resources/logback-test.xml @@ -0,0 +1,16 @@ + + + + + + + + + + + + + \ No newline at end of file diff --git a/spring-5-reactive/README.md b/spring-5-reactive/README.md index 2a4ee017f4..c39bb616f8 100644 --- a/spring-5-reactive/README.md +++ b/spring-5-reactive/README.md @@ -18,3 +18,4 @@ The "REST With Spring" Classes: http://bit.ly/restwithspring - [Validation for Functional Endpoints in Spring 5](https://www.baeldung.com/spring-functional-endpoints-validation) - [Logging a Reactive Sequence](https://www.baeldung.com/spring-reactive-sequence-logging) - [Testing Reactive Streams Using StepVerifier and TestPublisher](https://www.baeldung.com/reactive-streams-step-verifier-test-publisher) +- [Debugging Reactive Streams in Spring 5](https://www.baeldung.com/spring-debugging-reactive-streams) diff --git a/spring-5-security-oauth/README.md b/spring-5-security-oauth/README.md index f13925992b..5a444d4784 100644 --- a/spring-5-security-oauth/README.md +++ b/spring-5-security-oauth/README.md @@ -2,3 +2,4 @@ - [Spring Security 5 -OAuth2 Login](http://www.baeldung.com/spring-security-5-oauth2-login) - [Extracting Principal and Authorities using Spring Security OAuth](https://www.baeldung.com/spring-security-oauth-principal-authorities-extractor) +- [Customizing Authorization and Token Requests with Spring Security 5.1 Client](https://www.baeldung.com/spring-security-custom-oauth-requests) diff --git a/spring-5-security-oauth/src/main/java/com/baeldung/oauth2/SpringOAuthApplication.java b/spring-5-security-oauth/src/main/java/com/baeldung/oauth2/SpringOAuthApplication.java index 557c23b368..1478b03d2e 100644 --- a/spring-5-security-oauth/src/main/java/com/baeldung/oauth2/SpringOAuthApplication.java +++ b/spring-5-security-oauth/src/main/java/com/baeldung/oauth2/SpringOAuthApplication.java @@ -2,7 +2,9 @@ package com.baeldung.oauth2; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; +import org.springframework.context.annotation.PropertySource; +@PropertySource("classpath:default-application.properties") @SpringBootApplication public class SpringOAuthApplication { diff --git a/spring-5-security-oauth/src/main/java/com/baeldung/oauth2extractors/ExtractorsApplication.java b/spring-5-security-oauth/src/main/java/com/baeldung/oauth2extractors/ExtractorsApplication.java index 6ab4d525bf..174e5b0fdf 100644 --- a/spring-5-security-oauth/src/main/java/com/baeldung/oauth2extractors/ExtractorsApplication.java +++ b/spring-5-security-oauth/src/main/java/com/baeldung/oauth2extractors/ExtractorsApplication.java @@ -3,10 +3,12 @@ package com.baeldung.oauth2extractors; import org.apache.logging.log4j.util.Strings; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; +import org.springframework.context.annotation.PropertySource; import org.springframework.core.env.AbstractEnvironment; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; +@PropertySource("classpath:default-application.properties") @SpringBootApplication @Controller public class ExtractorsApplication { diff --git a/spring-5-security-oauth/src/main/java/com/baeldung/webclient/authorizationserver/AuthorizationServerApplication.java b/spring-5-security-oauth/src/main/java/com/baeldung/webclient/authorizationserver/AuthorizationServerApplication.java new file mode 100644 index 0000000000..d72704386c --- /dev/null +++ b/spring-5-security-oauth/src/main/java/com/baeldung/webclient/authorizationserver/AuthorizationServerApplication.java @@ -0,0 +1,17 @@ +package com.baeldung.webclient.authorizationserver; + +import org.springframework.boot.SpringApplication; +import org.springframework.boot.autoconfigure.SpringBootApplication; +import org.springframework.context.annotation.PropertySource; +import org.springframework.security.oauth2.config.annotation.web.configuration.EnableAuthorizationServer; + +@EnableAuthorizationServer +@PropertySource("classpath:webclient-authorization-application.properties") +@SpringBootApplication +public class AuthorizationServerApplication { + + public static void main(String[] args) { + SpringApplication.run(AuthorizationServerApplication.class, args); + } + +} diff --git a/spring-5-security-oauth/src/main/java/com/baeldung/webclient/authorizationserver/configuration/WebSecurityConfig.java b/spring-5-security-oauth/src/main/java/com/baeldung/webclient/authorizationserver/configuration/WebSecurityConfig.java new file mode 100644 index 0000000000..5dd15f1b8c --- /dev/null +++ b/spring-5-security-oauth/src/main/java/com/baeldung/webclient/authorizationserver/configuration/WebSecurityConfig.java @@ -0,0 +1,26 @@ +package com.baeldung.webclient.authorizationserver.configuration; + +import org.springframework.context.annotation.Configuration; +import org.springframework.security.config.annotation.web.builders.HttpSecurity; +import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity; +import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter; + +@EnableWebSecurity +@Configuration +public class WebSecurityConfig extends WebSecurityConfigurerAdapter { + + @Override + protected void configure(HttpSecurity http) throws Exception { + http.authorizeRequests() + .antMatchers("/login", "/user") + .permitAll() + .and() + .authorizeRequests() + .anyRequest() + .authenticated() + .and() + .formLogin() + .and() + .httpBasic(); + } +} diff --git a/spring-5-security-oauth/src/main/java/com/baeldung/webclient/resourceserver/ResourceServerApplication.java b/spring-5-security-oauth/src/main/java/com/baeldung/webclient/resourceserver/ResourceServerApplication.java new file mode 100644 index 0000000000..50ad293ef8 --- /dev/null +++ b/spring-5-security-oauth/src/main/java/com/baeldung/webclient/resourceserver/ResourceServerApplication.java @@ -0,0 +1,17 @@ +package com.baeldung.webclient.resourceserver; + +import org.springframework.boot.SpringApplication; +import org.springframework.boot.autoconfigure.SpringBootApplication; +import org.springframework.context.annotation.PropertySource; +import org.springframework.security.oauth2.config.annotation.web.configuration.EnableResourceServer; + +@EnableResourceServer +@PropertySource("webclient-resources-application.properties") +@SpringBootApplication +public class ResourceServerApplication { + + public static void main(String[] args) { + SpringApplication.run(ResourceServerApplication.class, args); + } + +} diff --git a/spring-5-security-oauth/src/main/java/com/baeldung/webclient/resourceserver/configuration/AuthorizationConfigs.java b/spring-5-security-oauth/src/main/java/com/baeldung/webclient/resourceserver/configuration/AuthorizationConfigs.java new file mode 100644 index 0000000000..5aea1983db --- /dev/null +++ b/spring-5-security-oauth/src/main/java/com/baeldung/webclient/resourceserver/configuration/AuthorizationConfigs.java @@ -0,0 +1,29 @@ +package com.baeldung.webclient.resourceserver.configuration; + +import org.springframework.beans.factory.annotation.Value; +import org.springframework.context.annotation.Bean; +import org.springframework.context.annotation.Configuration; +import org.springframework.security.oauth2.provider.token.RemoteTokenServices; +import org.springframework.security.oauth2.provider.token.ResourceServerTokenServices; + +@Configuration +public class AuthorizationConfigs { + + @Value("${oauth.authserver.client-id}") + String clientId; + + @Value("${oauth.authserver.client-secret}") + String clientSecret; + + @Value("${oauth.authserver.check-token-endpoint}") + String checkTokenEndpoint; + + @Bean + public ResourceServerTokenServices tokenSvc() { + RemoteTokenServices remoteService = new RemoteTokenServices(); + remoteService.setCheckTokenEndpointUrl(checkTokenEndpoint); + remoteService.setClientId(clientId); + remoteService.setClientSecret(clientSecret); + return remoteService; + } +} diff --git a/spring-5-security-oauth/src/main/java/com/baeldung/webclient/resourceserver/web/ResourceRestController.java b/spring-5-security-oauth/src/main/java/com/baeldung/webclient/resourceserver/web/ResourceRestController.java new file mode 100644 index 0000000000..aef0fb4d7d --- /dev/null +++ b/spring-5-security-oauth/src/main/java/com/baeldung/webclient/resourceserver/web/ResourceRestController.java @@ -0,0 +1,23 @@ +package com.baeldung.webclient.resourceserver.web; + +import java.security.Principal; + +import org.springframework.web.bind.annotation.GetMapping; +import org.springframework.web.bind.annotation.ResponseBody; +import org.springframework.web.bind.annotation.RestController; + +@RestController +public class ResourceRestController { + + @GetMapping("/retrieve-resource") + public String retrieveResource() { + return "This is the resource!"; + } + + @GetMapping("/user") + @ResponseBody + public Principal user(Principal user) { + return user; + } + +} diff --git a/spring-5-security-oauth/src/main/resources/application.properties b/spring-5-security-oauth/src/main/resources/application.properties index 5912b0f755..c84e745918 100644 --- a/spring-5-security-oauth/src/main/resources/application.properties +++ b/spring-5-security-oauth/src/main/resources/application.properties @@ -1,5 +1,3 @@ -server.port=8081 - logging.level.root=INFO logging.level.com.baeldung.dsl.ClientErrorLoggingFilter=DEBUG \ No newline at end of file diff --git a/spring-5-security-oauth/src/main/resources/default-application.properties b/spring-5-security-oauth/src/main/resources/default-application.properties new file mode 100644 index 0000000000..bafddced85 --- /dev/null +++ b/spring-5-security-oauth/src/main/resources/default-application.properties @@ -0,0 +1 @@ +server.port=8081 \ No newline at end of file diff --git a/spring-5-security-oauth/src/main/resources/webclient-authorization-application.properties b/spring-5-security-oauth/src/main/resources/webclient-authorization-application.properties new file mode 100644 index 0000000000..9531045359 --- /dev/null +++ b/spring-5-security-oauth/src/main/resources/webclient-authorization-application.properties @@ -0,0 +1,13 @@ +server.port=8085 + +security.oauth2.client.client-id=bael-client-id +security.oauth2.client.client-secret=bael-secret +security.oauth2.client.scope=read,write + +security.oauth2.authorization.check-token-access=isAuthenticated() + +spring.security.user.name=bael-user +spring.security.user.password=bael-password + +security.oauth2.client.registered-redirect-uri=http://localhost:8080/login/oauth2/code/bael, http://localhost:8080/authorize/oauth2/code/bael +security.oauth2.client.use-current-uri=false \ No newline at end of file diff --git a/spring-5-security-oauth/src/main/resources/webclient-resources-application.properties b/spring-5-security-oauth/src/main/resources/webclient-resources-application.properties new file mode 100644 index 0000000000..1cfb9ca12d --- /dev/null +++ b/spring-5-security-oauth/src/main/resources/webclient-resources-application.properties @@ -0,0 +1,6 @@ +server.port=8084 + +#spring.security.oauth2.resourceserver.jwt.issuer-uri=localhost:8085 +oauth.authserver.client-id=bael-client-id +oauth.authserver.client-secret=bael-secret +oauth.authserver.check-token-endpoint=http://localhost:8085/oauth/check_token diff --git a/spring-boot-bootstrap/pom.xml b/spring-boot-bootstrap/pom.xml index 7cafc5aa24..0ffc1820b8 100644 --- a/spring-boot-bootstrap/pom.xml +++ b/spring-boot-bootstrap/pom.xml @@ -57,6 +57,27 @@ + + beanstalk + + ${project.name}-eb + + + org.springframework.boot + spring-boot-maven-plugin + + + org.apache.maven.plugins + maven-compiler-plugin + + + **/cloud/config/*.java + + + + + + openshift diff --git a/spring-boot-bootstrap/src/main/resources/application-beanstalk.properties b/spring-boot-bootstrap/src/main/resources/application-beanstalk.properties new file mode 100644 index 0000000000..de03a3b5bb --- /dev/null +++ b/spring-boot-bootstrap/src/main/resources/application-beanstalk.properties @@ -0,0 +1,3 @@ +spring.datasource.url=jdbc:mysql://${rds.hostname}:${rds.port}/${rds.db.name} +spring.datasource.username=${rds.username} +spring.datasource.password=${rds.password} \ No newline at end of file diff --git a/spring-boot-ops/README.md b/spring-boot-ops/README.md index c125c96c36..553b02ebf0 100644 --- a/spring-boot-ops/README.md +++ b/spring-boot-ops/README.md @@ -9,4 +9,4 @@ - [Shutdown a Spring Boot Application](http://www.baeldung.com/spring-boot-shutdown) - [Spring Boot Console Application](http://www.baeldung.com/spring-boot-console-app) - [Comparing Embedded Servlet Containers in Spring Boot](http://www.baeldung.com/spring-boot-servlet-containers) - + - [Programmatically Restarting a Spring Boot Application](https://www.baeldung.com/java-restart-spring-boot-app) diff --git a/spring-boot-rest/README.md b/spring-boot-rest/README.md new file mode 100644 index 0000000000..0a8d13cf76 --- /dev/null +++ b/spring-boot-rest/README.md @@ -0,0 +1,3 @@ +Module for the articles that are part of the Spring REST E-book: + +1. [Bootstrap a Web Application with Spring 5](https://www.baeldung.com/bootstraping-a-web-application-with-spring-and-java-based-configuration) diff --git a/spring-boot-rest/pom.xml b/spring-boot-rest/pom.xml new file mode 100644 index 0000000000..baf9d35a09 --- /dev/null +++ b/spring-boot-rest/pom.xml @@ -0,0 +1,43 @@ + + + 4.0.0 + com.baeldung.web + spring-boot-rest + spring-boot-rest + Spring Boot Rest Module + war + + + parent-boot-2 + com.baeldung + 0.0.1-SNAPSHOT + ../parent-boot-2 + + + + + org.springframework.boot + spring-boot-starter-web + + + + org.springframework.boot + spring-boot-starter-test + test + + + + + + + org.springframework.boot + spring-boot-maven-plugin + + + + + + com.baeldung.SpringBootRestApplication + + diff --git a/spring-boot-rest/src/main/java/com/baeldung/web/SpringBootRestApplication.java b/spring-boot-rest/src/main/java/com/baeldung/web/SpringBootRestApplication.java new file mode 100644 index 0000000000..62aae7619d --- /dev/null +++ b/spring-boot-rest/src/main/java/com/baeldung/web/SpringBootRestApplication.java @@ -0,0 +1,13 @@ +package com.baeldung; + +import org.springframework.boot.SpringApplication; +import org.springframework.boot.autoconfigure.SpringBootApplication; + +@SpringBootApplication +public class SpringBootRestApplication { + + public static void main(String[] args) { + SpringApplication.run(SpringBootRestApplication.class, args); + } + +} diff --git a/spring-boot-rest/src/main/java/com/baeldung/web/config/WebConfig.java b/spring-boot-rest/src/main/java/com/baeldung/web/config/WebConfig.java new file mode 100644 index 0000000000..808e946218 --- /dev/null +++ b/spring-boot-rest/src/main/java/com/baeldung/web/config/WebConfig.java @@ -0,0 +1,8 @@ +package com.baeldung.web.config; + +import org.springframework.context.annotation.Configuration; + +@Configuration +public class WebConfig { + +} \ No newline at end of file diff --git a/spring-boot-rest/src/main/resources/application.properties b/spring-boot-rest/src/main/resources/application.properties new file mode 100644 index 0000000000..e69de29bb2 diff --git a/spring-boot-rest/src/test/java/com/baeldung/web/SpringContextIntegrationTest.java b/spring-boot-rest/src/test/java/com/baeldung/web/SpringContextIntegrationTest.java new file mode 100644 index 0000000000..0c1fdf372b --- /dev/null +++ b/spring-boot-rest/src/test/java/com/baeldung/web/SpringContextIntegrationTest.java @@ -0,0 +1,16 @@ +package com.baeldung.spring.boot.rest; + +import org.junit.Test; +import org.junit.runner.RunWith; +import org.springframework.boot.test.context.SpringBootTest; +import org.springframework.test.context.junit4.SpringRunner; + +@RunWith(SpringRunner.class) +@SpringBootTest +public class SpringContextIntegrationTest { + + @Test + public void contextLoads() { + } + +} diff --git a/spring-boot-security/pom.xml b/spring-boot-security/pom.xml index d5c7976ba2..b87189757a 100644 --- a/spring-boot-security/pom.xml +++ b/spring-boot-security/pom.xml @@ -66,4 +66,8 @@ + + com.baeldung.springbootsecurity.basic_auth.SpringBootSecurityApplication + + diff --git a/spring-boot-testing/README.MD b/spring-boot-testing/README.MD index a609b5bf09..144c3581f7 100644 --- a/spring-boot-testing/README.MD +++ b/spring-boot-testing/README.MD @@ -4,3 +4,4 @@ The "REST With Spring" Classes: http://bit.ly/restwithspring ### Relevant Articles: - [Testing with Spring and Spock](https://www.baeldung.com/spring-spock-testing) +- [Exclude Auto-Configuration Classes in Spring Boot Tests](https://www.baeldung.com/spring-boot-exclude-auto-configuration-test) diff --git a/spring-boot-testing/pom.xml b/spring-boot-testing/pom.xml index 2a498e54c5..c2c886a4fe 100644 --- a/spring-boot-testing/pom.xml +++ b/spring-boot-testing/pom.xml @@ -23,6 +23,10 @@ org.springframework.boot spring-boot-starter-tomcat + + org.springframework.boot + spring-boot-starter-security + org.springframework.boot spring-boot-starter-test @@ -43,6 +47,13 @@ ${spock.version} test + + + io.rest-assured + rest-assured + test + + @@ -98,51 +109,14 @@ - + - - - autoconfiguration - - - - org.apache.maven.plugins - maven-surefire-plugin - - - integration-test - - test - - - - **/*LiveTest.java - **/*IntegrationTest.java - **/*IntTest.java - - - **/AutoconfigurationTest.java - - - - - - - json - - - - - - - - - org.baeldung.boot.Application + com.baeldung.boot.Application 2.2.4 1.2-groovy-2.4 diff --git a/spring-boot-testing/src/main/java/com/baeldung/boot/Application.java b/spring-boot-testing/src/main/java/com/baeldung/boot/Application.java index c1b6558b26..cb0d0c1532 100644 --- a/spring-boot-testing/src/main/java/com/baeldung/boot/Application.java +++ b/spring-boot-testing/src/main/java/com/baeldung/boot/Application.java @@ -1,4 +1,4 @@ -package org.baeldung.boot; +package com.baeldung.boot; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; diff --git a/spring-boot-testing/src/main/java/com/baeldung/boot/controller/rest/HomeController.java b/spring-boot-testing/src/main/java/com/baeldung/boot/controller/rest/HomeController.java new file mode 100644 index 0000000000..595c34254b --- /dev/null +++ b/spring-boot-testing/src/main/java/com/baeldung/boot/controller/rest/HomeController.java @@ -0,0 +1,14 @@ +package com.baeldung.boot.controller.rest; + +import org.springframework.web.bind.annotation.GetMapping; +import org.springframework.web.bind.annotation.RestController; + +@RestController +public class HomeController { + + @GetMapping("/") + public String salutation() { + return "Welcome !"; + } + +} \ No newline at end of file diff --git a/spring-boot-testing/src/main/java/com/baeldung/boot/controller/rest/WebController.java b/spring-boot-testing/src/main/java/com/baeldung/boot/controller/rest/WebController.java index 5b65599e00..7247ca3dfa 100644 --- a/spring-boot-testing/src/main/java/com/baeldung/boot/controller/rest/WebController.java +++ b/spring-boot-testing/src/main/java/com/baeldung/boot/controller/rest/WebController.java @@ -1,4 +1,6 @@ -package org.baeldung.boot.controller.rest; +package com.baeldung.boot.controller.rest; + +import java.util.Optional; import org.springframework.http.HttpStatus; import org.springframework.web.bind.annotation.DeleteMapping; @@ -9,8 +11,6 @@ import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseStatus; import org.springframework.web.bind.annotation.RestController; -import java.util.Optional; - @RestController @RequestMapping("/hello") public class WebController { diff --git a/spring-boot-testing/src/main/resources/application-test.properties b/spring-boot-testing/src/main/resources/application-test.properties new file mode 100644 index 0000000000..8d5e86ba26 --- /dev/null +++ b/spring-boot-testing/src/main/resources/application-test.properties @@ -0,0 +1,3 @@ + +# test properties +spring.autoconfigure.exclude=org.springframework.boot.autoconfigure.security.servlet.SecurityAutoConfiguration \ No newline at end of file diff --git a/spring-boot-testing/src/main/resources/application.properties b/spring-boot-testing/src/main/resources/application.properties new file mode 100644 index 0000000000..e378aacdd5 --- /dev/null +++ b/spring-boot-testing/src/main/resources/application.properties @@ -0,0 +1,4 @@ + +# security +spring.security.user.name=john +spring.security.user.password=123 \ No newline at end of file diff --git a/spring-boot-testing/src/test/groovy/org/baeldung/boot/LoadContextTest.groovy b/spring-boot-testing/src/test/groovy/com/baeldung/boot/LoadContextTest.groovy similarity index 87% rename from spring-boot-testing/src/test/groovy/org/baeldung/boot/LoadContextTest.groovy rename to spring-boot-testing/src/test/groovy/com/baeldung/boot/LoadContextTest.groovy index 2d4a7ca2cf..85b0a4b89b 100644 --- a/spring-boot-testing/src/test/groovy/org/baeldung/boot/LoadContextTest.groovy +++ b/spring-boot-testing/src/test/groovy/com/baeldung/boot/LoadContextTest.groovy @@ -1,6 +1,6 @@ -package org.baeldung.boot +package com.baeldung.boot -import org.baeldung.boot.controller.rest.WebController +import com.baeldung.boot.controller.rest.WebController import org.springframework.beans.factory.annotation.Autowired import org.springframework.boot.test.context.SpringBootTest import spock.lang.Narrative diff --git a/spring-boot-testing/src/test/groovy/org/baeldung/boot/WebControllerTest.groovy b/spring-boot-testing/src/test/groovy/com/baeldung/boot/WebControllerTest.groovy similarity index 96% rename from spring-boot-testing/src/test/groovy/org/baeldung/boot/WebControllerTest.groovy rename to spring-boot-testing/src/test/groovy/com/baeldung/boot/WebControllerTest.groovy index fe1b34ab8c..d8b4e03adc 100644 --- a/spring-boot-testing/src/test/groovy/org/baeldung/boot/WebControllerTest.groovy +++ b/spring-boot-testing/src/test/groovy/com/baeldung/boot/WebControllerTest.groovy @@ -1,4 +1,4 @@ -package org.baeldung.boot +package com.baeldung.boot import org.springframework.beans.factory.annotation.Autowired import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc @@ -12,8 +12,8 @@ import spock.lang.Title @Title("WebController Specification") @Narrative("The Specification of the behaviour of the WebController. It can greet a person, change the name and reset it to 'world'") -@AutoConfigureMockMvc -@WebMvcTest +@AutoConfigureMockMvc(secure=false) +@WebMvcTest() class WebControllerTest extends Specification { @Autowired diff --git a/spring-boot-testing/src/test/groovy/com/baeldung/boot/WebControllerTest.groovy alias b/spring-boot-testing/src/test/groovy/com/baeldung/boot/WebControllerTest.groovy alias new file mode 100644 index 0000000000..f2fc2f48e2 Binary files /dev/null and b/spring-boot-testing/src/test/groovy/com/baeldung/boot/WebControllerTest.groovy alias differ diff --git a/spring-boot-testing/src/test/java/com/baeldung/autoconfig/exclude/ExcludeAutoConfig1IntegrationTest.java b/spring-boot-testing/src/test/java/com/baeldung/autoconfig/exclude/ExcludeAutoConfig1IntegrationTest.java new file mode 100644 index 0000000000..a4a29cddf3 --- /dev/null +++ b/spring-boot-testing/src/test/java/com/baeldung/autoconfig/exclude/ExcludeAutoConfig1IntegrationTest.java @@ -0,0 +1,26 @@ +package com.baeldung.autoconfig.exclude; + +import static org.junit.Assert.assertEquals; +import io.restassured.RestAssured; + +import org.junit.Test; +import org.junit.runner.RunWith; +import org.springframework.boot.test.context.SpringBootTest; +import org.springframework.boot.test.context.SpringBootTest.WebEnvironment; +import org.springframework.http.HttpStatus; +import org.springframework.test.context.TestPropertySource; +import org.springframework.test.context.junit4.SpringRunner; + +import com.baeldung.boot.Application; + +@RunWith(SpringRunner.class) +@SpringBootTest(classes = Application.class, webEnvironment = WebEnvironment.DEFINED_PORT) +@TestPropertySource(properties = "spring.autoconfigure.exclude=org.springframework.boot.autoconfigure.security.servlet.SecurityAutoConfiguration") +public class ExcludeAutoConfig1IntegrationTest { + + @Test + public void givenSecurityConfigExcluded_whenAccessHome_thenNoAuthenticationRequired() { + int statusCode = RestAssured.get("http://localhost:8080/").statusCode(); + assertEquals(HttpStatus.OK.value(), statusCode); + } +} diff --git a/spring-boot-testing/src/test/java/com/baeldung/autoconfig/exclude/ExcludeAutoConfig2IntegrationTest.java b/spring-boot-testing/src/test/java/com/baeldung/autoconfig/exclude/ExcludeAutoConfig2IntegrationTest.java new file mode 100644 index 0000000000..cdf79b159c --- /dev/null +++ b/spring-boot-testing/src/test/java/com/baeldung/autoconfig/exclude/ExcludeAutoConfig2IntegrationTest.java @@ -0,0 +1,26 @@ +package com.baeldung.autoconfig.exclude; + +import static org.junit.Assert.assertEquals; +import io.restassured.RestAssured; + +import org.junit.Test; +import org.junit.runner.RunWith; +import org.springframework.boot.test.context.SpringBootTest; +import org.springframework.boot.test.context.SpringBootTest.WebEnvironment; +import org.springframework.http.HttpStatus; +import org.springframework.test.context.ActiveProfiles; +import org.springframework.test.context.junit4.SpringRunner; + +import com.baeldung.boot.Application; + +@RunWith(SpringRunner.class) +@SpringBootTest(classes = Application.class, webEnvironment = WebEnvironment.DEFINED_PORT) +@ActiveProfiles("test") +public class ExcludeAutoConfig2IntegrationTest { + + @Test + public void givenSecurityConfigExcluded_whenAccessHome_thenNoAuthenticationRequired() { + int statusCode = RestAssured.get("http://localhost:8080/").statusCode(); + assertEquals(HttpStatus.OK.value(), statusCode); + } +} diff --git a/spring-boot-testing/src/test/java/com/baeldung/autoconfig/exclude/ExcludeAutoConfig3IntegrationTest.java b/spring-boot-testing/src/test/java/com/baeldung/autoconfig/exclude/ExcludeAutoConfig3IntegrationTest.java new file mode 100644 index 0000000000..0e45d1e9e5 --- /dev/null +++ b/spring-boot-testing/src/test/java/com/baeldung/autoconfig/exclude/ExcludeAutoConfig3IntegrationTest.java @@ -0,0 +1,27 @@ +package com.baeldung.autoconfig.exclude; + +import static org.junit.Assert.assertEquals; +import io.restassured.RestAssured; + +import org.junit.Test; +import org.junit.runner.RunWith; +import org.springframework.boot.autoconfigure.EnableAutoConfiguration; +import org.springframework.boot.autoconfigure.security.servlet.SecurityAutoConfiguration; +import org.springframework.boot.test.context.SpringBootTest; +import org.springframework.boot.test.context.SpringBootTest.WebEnvironment; +import org.springframework.http.HttpStatus; +import org.springframework.test.context.junit4.SpringRunner; + +import com.baeldung.boot.Application; + +@RunWith(SpringRunner.class) +@SpringBootTest(classes = Application.class, webEnvironment = WebEnvironment.DEFINED_PORT) +@EnableAutoConfiguration(exclude=SecurityAutoConfiguration.class) +public class ExcludeAutoConfig3IntegrationTest { + + @Test + public void givenSecurityConfigExcluded_whenAccessHome_thenNoAuthenticationRequired() { + int statusCode = RestAssured.get("http://localhost:8080/").statusCode(); + assertEquals(HttpStatus.OK.value(), statusCode); + } +} diff --git a/spring-boot-testing/src/test/java/com/baeldung/autoconfig/exclude/ExcludeAutoConfig4IntegrationTest.java b/spring-boot-testing/src/test/java/com/baeldung/autoconfig/exclude/ExcludeAutoConfig4IntegrationTest.java new file mode 100644 index 0000000000..8429aed6cd --- /dev/null +++ b/spring-boot-testing/src/test/java/com/baeldung/autoconfig/exclude/ExcludeAutoConfig4IntegrationTest.java @@ -0,0 +1,22 @@ +package com.baeldung.autoconfig.exclude; + +import static org.junit.Assert.assertEquals; +import io.restassured.RestAssured; + +import org.junit.Test; +import org.junit.runner.RunWith; +import org.springframework.boot.test.context.SpringBootTest; +import org.springframework.boot.test.context.SpringBootTest.WebEnvironment; +import org.springframework.http.HttpStatus; +import org.springframework.test.context.junit4.SpringRunner; + +@RunWith(SpringRunner.class) +@SpringBootTest(classes = TestApplication.class, webEnvironment = WebEnvironment.DEFINED_PORT) +public class ExcludeAutoConfig4IntegrationTest { + + @Test + public void givenSecurityConfigExcluded_whenAccessHome_thenNoAuthenticationRequired() { + int statusCode = RestAssured.get("http://localhost:8080/").statusCode(); + assertEquals(HttpStatus.OK.value(), statusCode); + } +} diff --git a/spring-boot-testing/src/test/java/com/baeldung/autoconfig/exclude/TestApplication.java b/spring-boot-testing/src/test/java/com/baeldung/autoconfig/exclude/TestApplication.java new file mode 100644 index 0000000000..7c162f85ab --- /dev/null +++ b/spring-boot-testing/src/test/java/com/baeldung/autoconfig/exclude/TestApplication.java @@ -0,0 +1,13 @@ +package com.baeldung.autoconfig.exclude; + +import org.springframework.boot.SpringApplication; +import org.springframework.boot.autoconfigure.SpringBootApplication; +import org.springframework.boot.autoconfigure.security.servlet.SecurityAutoConfiguration; + +@SpringBootApplication(scanBasePackages="com.baeldung.boot", exclude=SecurityAutoConfiguration.class) +public class TestApplication { + + public static void main(String[] args) { + SpringApplication.run(TestApplication.class, args); + } +} diff --git a/spring-boot-testing/src/test/java/com/baeldung/boot/SpringContextIntegrationTest.java b/spring-boot-testing/src/test/java/com/baeldung/boot/SpringContextIntegrationTest.java new file mode 100644 index 0000000000..63ab07fdb7 --- /dev/null +++ b/spring-boot-testing/src/test/java/com/baeldung/boot/SpringContextIntegrationTest.java @@ -0,0 +1,15 @@ +package com.baeldung.boot; + +import org.junit.Test; +import org.junit.runner.RunWith; +import org.springframework.boot.test.context.SpringBootTest; +import org.springframework.test.context.junit4.SpringRunner; + +@RunWith(SpringRunner.class) +@SpringBootTest(classes = Application.class) +public class SpringContextIntegrationTest { + + @Test + public void whenSpringContextIsBootstrapped_thenNoExceptions() { + } +} diff --git a/spring-boot-testing/src/test/java/com/baeldung/boot/autoconfig/AutoConfigIntegrationTest.java b/spring-boot-testing/src/test/java/com/baeldung/boot/autoconfig/AutoConfigIntegrationTest.java new file mode 100644 index 0000000000..fe71f44ddf --- /dev/null +++ b/spring-boot-testing/src/test/java/com/baeldung/boot/autoconfig/AutoConfigIntegrationTest.java @@ -0,0 +1,30 @@ +package com.baeldung.boot.autoconfig; + +import static org.junit.Assert.assertEquals; +import io.restassured.RestAssured; + +import org.junit.Test; +import org.junit.runner.RunWith; +import org.springframework.boot.test.context.SpringBootTest; +import org.springframework.boot.test.context.SpringBootTest.WebEnvironment; +import org.springframework.http.HttpStatus; +import org.springframework.test.context.junit4.SpringRunner; + +import com.baeldung.boot.Application; + +@RunWith(SpringRunner.class) +@SpringBootTest(classes = Application.class, webEnvironment = WebEnvironment.DEFINED_PORT) +public class AutoConfigIntegrationTest { + + @Test + public void givenNoAuthentication_whenAccessHome_thenUnauthorized() { + int statusCode = RestAssured.get("http://localhost:8080/").statusCode(); + assertEquals(HttpStatus.UNAUTHORIZED.value(), statusCode); + } + + @Test + public void givenAuthentication_whenAccessHome_thenOK() { + int statusCode = RestAssured.given().auth().basic("john", "123").get("http://localhost:8080/").statusCode(); + assertEquals(HttpStatus.OK.value(), statusCode); + } +} diff --git a/spring-cloud/spring-cloud-kubernetes/README.md b/spring-cloud/spring-cloud-kubernetes/README.md index 295ead1c2f..2387758626 100644 --- a/spring-cloud/spring-cloud-kubernetes/README.md +++ b/spring-cloud/spring-cloud-kubernetes/README.md @@ -1,3 +1,4 @@ ### Relevant Articles: - [Running Spring Boot Applications With Minikube](https://www.baeldung.com/spring-boot-minikube) +- [Self-Healing Applications with Kubernetes and Spring Boot](https://www.baeldung.com/spring-boot-kubernetes-self-healing-apps) diff --git a/spring-core/src/main/java/com/baeldung/annotation/MyBean.java b/spring-core/src/main/java/com/baeldung/annotation/MyBean.java new file mode 100644 index 0000000000..9a1fd3beec --- /dev/null +++ b/spring-core/src/main/java/com/baeldung/annotation/MyBean.java @@ -0,0 +1,26 @@ +package com.baeldung.annotation; + +import org.springframework.stereotype.Component; +import javax.annotation.PostConstruct; +import javax.annotation.PreDestroy; + +@Component +public class MyBean { + + private final TestBean testBean; + + public MyBean(TestBean testBean) { + this.testBean = testBean; + System.out.println("Hello from constructor"); + } + + @PostConstruct + private void postConstruct() { + System.out.println("Hello from @PostConstruct method"); + } + + @PreDestroy + public void preDestroy() { + System.out.println("Bean is being destroyed"); + } +} \ No newline at end of file diff --git a/spring-core/src/main/java/com/baeldung/annotation/TestBean.java b/spring-core/src/main/java/com/baeldung/annotation/TestBean.java new file mode 100644 index 0000000000..0539e10751 --- /dev/null +++ b/spring-core/src/main/java/com/baeldung/annotation/TestBean.java @@ -0,0 +1,8 @@ +package com.baeldung.annotation; + +import org.springframework.stereotype.Component; + +@Component +public class TestBean { + +} \ No newline at end of file diff --git a/spring-core/src/main/java/com/baeldung/value/ValuesApp.java b/spring-core/src/main/java/com/baeldung/value/ValuesApp.java index f525dfde89..80893c1adf 100644 --- a/spring-core/src/main/java/com/baeldung/value/ValuesApp.java +++ b/spring-core/src/main/java/com/baeldung/value/ValuesApp.java @@ -2,6 +2,7 @@ package com.baeldung.value; import java.util.Arrays; import java.util.List; +import java.util.Map; import javax.annotation.PostConstruct; @@ -45,6 +46,27 @@ public class ValuesApp { @Value("#{'${listOfValues}'.split(',')}") private List valuesList; + + @Value("#{${valuesMap}}") + private Map valuesMap; + + @Value("#{${valuesMap}.key1}") + private Integer valuesMapKey1; + + @Value("#{${valuesMap}['unknownKey']}") + private Integer unknownMapKey; + + @Value("#{${unknownMap : {key1:'1', key2 : '2'}}}") + private Map unknownMap; + + @Value("#{${valuesMap}['unknownKey'] ?: 5}") + private Integer unknownMapKeyWithDefaultValue; + + @Value("#{${valuesMap}.?[value>'1']}") + private Map valuesMapFiltered; + + @Value("#{systemProperties}") + private Map systemPropertiesMap; public static void main(String[] args) { System.setProperty("systemValue", "Some system parameter value"); @@ -69,5 +91,12 @@ public class ValuesApp { System.out.println(spelSomeDefault); System.out.println(someBeanValue); System.out.println(valuesList); + System.out.println(valuesMap); + System.out.println(valuesMapKey1); + System.out.println(unknownMapKey); + System.out.println(unknownMap); + System.out.println(unknownMapKeyWithDefaultValue); + System.out.println(valuesMapFiltered); + System.out.println(systemPropertiesMap); } } diff --git a/spring-core/src/main/resources/values.properties b/spring-core/src/main/resources/values.properties index d7d61b8ee8..c6db5873fb 100644 --- a/spring-core/src/main/resources/values.properties +++ b/spring-core/src/main/resources/values.properties @@ -1,3 +1,4 @@ value.from.file=Value got from the file priority=Properties file -listOfValues=A,B,C \ No newline at end of file +listOfValues=A,B,C +valuesMap={key1:'1', key2 : '2', key3 : '3'} \ No newline at end of file diff --git a/spring-ehcache/.gitignore b/spring-ehcache/.gitignore new file mode 100644 index 0000000000..83c05e60c8 --- /dev/null +++ b/spring-ehcache/.gitignore @@ -0,0 +1,13 @@ +*.class + +#folders# +/target +/neoDb* +/data +/src/main/webapp/WEB-INF/classes +*/META-INF/* + +# Packaged files # +*.jar +*.war +*.ear \ No newline at end of file diff --git a/spring-ehcache/README.md b/spring-ehcache/README.md new file mode 100644 index 0000000000..749441375e --- /dev/null +++ b/spring-ehcache/README.md @@ -0,0 +1,7 @@ +## Spring Ehcache Example Project + +A simple example of using ehcache with spring-boot. + +### Relevant Articles: +- [Spring Boot Ehcache Example](http://www.baeldung.com/spring-ehcache) + diff --git a/spring-ehcache/checkstyle.xml b/spring-ehcache/checkstyle.xml new file mode 100644 index 0000000000..85063a7570 --- /dev/null +++ b/spring-ehcache/checkstyle.xml @@ -0,0 +1,11 @@ + + + + + + + + + \ No newline at end of file diff --git a/spring-ehcache/pom.xml b/spring-ehcache/pom.xml new file mode 100644 index 0000000000..b8378617c5 --- /dev/null +++ b/spring-ehcache/pom.xml @@ -0,0 +1,87 @@ + + 4.0.0 + spring-ehcache + 0.1-SNAPSHOT + spring-ehcache + jar + + + parent-boot-2 + com.baeldung + 0.0.1-SNAPSHOT + ../parent-boot-2 + + + + + + org.springframework.boot + spring-boot-starter-web + + + org.springframework.boot + spring-boot-starter-cache + + + javax.cache + cache-api + + + org.ehcache + ehcache + + + + + spring-ehcache + + + src/main/resources + true + + + + + + org.springframework.boot + spring-boot-maven-plugin + + + org.apache.maven.plugins + maven-checkstyle-plugin + ${checkstyle-maven-plugin.version} + + checkstyle.xml + + + + + check + + + + + + + + + + + org.apache.maven.plugins + maven-checkstyle-plugin + ${checkstyle-maven-plugin.version} + + checkstyle.xml + + + + + + + + 3.0.0 + false + + + diff --git a/spring-ehcache/src/main/java/com/baeldung/cachetest/Application.java b/spring-ehcache/src/main/java/com/baeldung/cachetest/Application.java new file mode 100644 index 0000000000..a1ce7a5317 --- /dev/null +++ b/spring-ehcache/src/main/java/com/baeldung/cachetest/Application.java @@ -0,0 +1,13 @@ +package com.baeldung.cachetest; + +import org.springframework.boot.SpringApplication; +import org.springframework.boot.autoconfigure.SpringBootApplication; + +@SpringBootApplication +public class Application { + + public static void main(String[] args) { + SpringApplication.run(Application.class, args); + } + +} \ No newline at end of file diff --git a/spring-ehcache/src/main/java/com/baeldung/cachetest/config/CacheConfig.java b/spring-ehcache/src/main/java/com/baeldung/cachetest/config/CacheConfig.java new file mode 100644 index 0000000000..3cf2309cb9 --- /dev/null +++ b/spring-ehcache/src/main/java/com/baeldung/cachetest/config/CacheConfig.java @@ -0,0 +1,57 @@ +package com.baeldung.cachetest.config; + +import java.math.BigDecimal; +import java.time.Duration; + +import javax.cache.CacheManager; + +import org.ehcache.config.CacheConfiguration; +import org.ehcache.config.ResourcePools; +import org.ehcache.config.builders.CacheConfigurationBuilder; +import org.ehcache.config.builders.CacheEventListenerConfigurationBuilder; +import org.ehcache.config.builders.ExpiryPolicyBuilder; +import org.ehcache.config.builders.ResourcePoolsBuilder; +import org.ehcache.config.units.EntryUnit; +import org.ehcache.config.units.MemoryUnit; +import org.ehcache.event.EventType; +import org.ehcache.jsr107.Eh107Configuration; +import org.springframework.boot.autoconfigure.cache.JCacheManagerCustomizer; +import org.springframework.cache.annotation.EnableCaching; +import org.springframework.context.annotation.Bean; +import org.springframework.context.annotation.Configuration; + +@Configuration +@EnableCaching +public class CacheConfig { + + private static final int ON_HEAP_CACHE_SIZE_ENTRIES = 2; + private static final int OFF_HEAP_CACHE_SIZE_MB = 10; + private static final int CACHE_EXPIRY_SECONDS = 30; + + @Bean + public JCacheManagerCustomizer jcacheManagerCustomizer() { + return new JCacheManagerCustomizer() { + + @Override + public void customize(CacheManager cacheManager) { + ResourcePools resourcePools = ResourcePoolsBuilder.newResourcePoolsBuilder() + .heap(ON_HEAP_CACHE_SIZE_ENTRIES, EntryUnit.ENTRIES) + .offheap(OFF_HEAP_CACHE_SIZE_MB, MemoryUnit.MB).build(); + + CacheEventListenerConfigurationBuilder eventLoggerConfig = CacheEventListenerConfigurationBuilder + .newEventListenerConfiguration(new CacheEventLogger(), EventType.CREATED, EventType.EXPIRED) + .unordered().asynchronous(); + + CacheConfiguration cacheConfiguration = CacheConfigurationBuilder + .newCacheConfigurationBuilder(Long.class, BigDecimal.class, resourcePools) + .withExpiry(ExpiryPolicyBuilder.timeToLiveExpiration(Duration.ofSeconds(CACHE_EXPIRY_SECONDS))) + .add(eventLoggerConfig).build(); + + cacheManager.createCache("squareCache", + Eh107Configuration.fromEhcacheCacheConfiguration(cacheConfiguration)); + + } + }; + } + +} diff --git a/spring-ehcache/src/main/java/com/baeldung/cachetest/config/CacheEventLogger.java b/spring-ehcache/src/main/java/com/baeldung/cachetest/config/CacheEventLogger.java new file mode 100644 index 0000000000..c8ead85f1e --- /dev/null +++ b/spring-ehcache/src/main/java/com/baeldung/cachetest/config/CacheEventLogger.java @@ -0,0 +1,18 @@ +package com.baeldung.cachetest.config; + +import org.ehcache.event.CacheEvent; +import org.ehcache.event.CacheEventListener; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +public class CacheEventLogger implements CacheEventListener { + + private static final Logger log = LoggerFactory.getLogger(CacheEventLogger.class); + + @Override + public void onEvent(CacheEvent cacheEvent) { + log.info("Cache event {} for item with key {}. Old value = {}, New value = {}", cacheEvent.getType(), + cacheEvent.getKey(), cacheEvent.getOldValue(), cacheEvent.getNewValue()); + } + +} diff --git a/spring-ehcache/src/main/java/com/baeldung/cachetest/rest/NumberController.java b/spring-ehcache/src/main/java/com/baeldung/cachetest/rest/NumberController.java new file mode 100644 index 0000000000..4115c34cc4 --- /dev/null +++ b/spring-ehcache/src/main/java/com/baeldung/cachetest/rest/NumberController.java @@ -0,0 +1,29 @@ +package com.baeldung.cachetest.rest; + +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; +import org.springframework.beans.factory.annotation.Autowired; +import org.springframework.http.MediaType; +import org.springframework.web.bind.annotation.GetMapping; +import org.springframework.web.bind.annotation.PathVariable; +import org.springframework.web.bind.annotation.RequestMapping; +import org.springframework.web.bind.annotation.RestController; + +import com.baeldung.cachetest.service.NumberService; + +@RestController +@RequestMapping(path = "/number", produces = MediaType.APPLICATION_JSON_UTF8_VALUE) +public class NumberController { + + private final static Logger log = LoggerFactory.getLogger(NumberController.class); + + @Autowired + private NumberService numberService; + + @GetMapping(path = "/square/{number}") + public String getThing(@PathVariable Long number) { + log.info("call numberService to square {}", number); + return String.format("{\"square\": %s}", numberService.square(number)); + } + +} diff --git a/spring-ehcache/src/main/java/com/baeldung/cachetest/service/NumberService.java b/spring-ehcache/src/main/java/com/baeldung/cachetest/service/NumberService.java new file mode 100644 index 0000000000..bcd930f5e1 --- /dev/null +++ b/spring-ehcache/src/main/java/com/baeldung/cachetest/service/NumberService.java @@ -0,0 +1,22 @@ +package com.baeldung.cachetest.service; + +import java.math.BigDecimal; + +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; +import org.springframework.cache.annotation.Cacheable; +import org.springframework.stereotype.Service; + +@Service +public class NumberService { + + private final static Logger log = LoggerFactory.getLogger(NumberService.class); + + @Cacheable(value = "squareCache", key = "#number", condition = "#number>10") + public BigDecimal square(Long number) { + BigDecimal square = BigDecimal.valueOf(number).multiply(BigDecimal.valueOf(number)); + log.info("square of {} is {}", number, square); + return square; + } + +} diff --git a/spring-kafka/pom.xml b/spring-kafka/pom.xml index 5c370880b4..b76d4f10c0 100644 --- a/spring-kafka/pom.xml +++ b/spring-kafka/pom.xml @@ -33,7 +33,7 @@ - 1.1.3.RELEASE + 2.2.2.RELEASE 2.9.7 diff --git a/spring-kafka/src/main/java/com/baeldung/spring/kafka/KafkaApplication.java b/spring-kafka/src/main/java/com/baeldung/spring/kafka/KafkaApplication.java index 4ee7f40335..b313eafdb9 100644 --- a/spring-kafka/src/main/java/com/baeldung/spring/kafka/KafkaApplication.java +++ b/spring-kafka/src/main/java/com/baeldung/spring/kafka/KafkaApplication.java @@ -13,8 +13,11 @@ import org.springframework.kafka.annotation.KafkaListener; import org.springframework.kafka.annotation.TopicPartition; import org.springframework.kafka.core.KafkaTemplate; import org.springframework.kafka.support.KafkaHeaders; +import org.springframework.kafka.support.SendResult; import org.springframework.messaging.handler.annotation.Header; import org.springframework.messaging.handler.annotation.Payload; +import org.springframework.util.concurrent.ListenableFuture; +import org.springframework.util.concurrent.ListenableFutureCallback; @SpringBootApplication public class KafkaApplication { @@ -98,7 +101,20 @@ public class KafkaApplication { private String greetingTopicName; public void sendMessage(String message) { - kafkaTemplate.send(topicName, message); + + ListenableFuture> future = kafkaTemplate.send(topicName, message); + + future.addCallback(new ListenableFutureCallback>() { + + @Override + public void onSuccess(SendResult result) { + System.out.println("Sent message=[" + message + "] with offset=[" + result.getRecordMetadata().offset() + "]"); + } + @Override + public void onFailure(Throwable ex) { + System.out.println("Unable to send message=[" + message + "] due to : " + ex.getMessage()); + } + }); } public void sendMessageToPartion(String message, int partition) { diff --git a/spring-kafka/src/main/java/com/baeldung/spring/kafka/KafkaTopicConfig.java b/spring-kafka/src/main/java/com/baeldung/spring/kafka/KafkaTopicConfig.java new file mode 100644 index 0000000000..a3426e78a3 --- /dev/null +++ b/spring-kafka/src/main/java/com/baeldung/spring/kafka/KafkaTopicConfig.java @@ -0,0 +1,57 @@ +package com.baeldung.spring.kafka; + +import java.util.HashMap; +import java.util.Map; + +import org.apache.kafka.clients.admin.AdminClientConfig; +import org.apache.kafka.clients.admin.NewTopic; +import org.springframework.beans.factory.annotation.Value; +import org.springframework.context.annotation.Bean; +import org.springframework.context.annotation.Configuration; +import org.springframework.kafka.core.KafkaAdmin; + +@Configuration +public class KafkaTopicConfig { + + @Value(value = "${kafka.bootstrapAddress}") + private String bootstrapAddress; + + @Value(value = "${message.topic.name}") + private String topicName; + + @Value(value = "${partitioned.topic.name}") + private String partionedTopicName; + + @Value(value = "${filtered.topic.name}") + private String filteredTopicName; + + @Value(value = "${greeting.topic.name}") + private String greetingTopicName; + + @Bean + public KafkaAdmin kafkaAdmin() { + Map configs = new HashMap<>(); + configs.put(AdminClientConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapAddress); + return new KafkaAdmin(configs); + } + + @Bean + public NewTopic topic1() { + return new NewTopic(topicName, 1, (short) 1); + } + + @Bean + public NewTopic topic2() { + return new NewTopic(partionedTopicName, 6, (short) 1); + } + + @Bean + public NewTopic topic3() { + return new NewTopic(filteredTopicName, 1, (short) 1); + } + + @Bean + public NewTopic topic4() { + return new NewTopic(greetingTopicName, 1, (short) 1); + } +} diff --git a/spring-kafka/src/test/java/org/baeldung/SpringContextLiveTest.java b/spring-kafka/src/test/java/org/baeldung/SpringContextLiveTest.java new file mode 100644 index 0000000000..d8fb3131f5 --- /dev/null +++ b/spring-kafka/src/test/java/org/baeldung/SpringContextLiveTest.java @@ -0,0 +1,17 @@ +package org.baeldung; + +import org.junit.Test; +import org.junit.runner.RunWith; +import org.springframework.boot.test.context.SpringBootTest; +import org.springframework.test.context.junit4.SpringRunner; + +import com.baeldung.spring.kafka.KafkaApplication; + +@RunWith(SpringRunner.class) +@SpringBootTest(classes = KafkaApplication.class) +public class SpringContextLiveTest { + + @Test + public void whenSpringContextIsBootstrapped_thenNoExceptions() { + } +}