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Merge pull request #2 from eugenp/master 

merge
This commit is contained in:
Krzysztof Majewski 2019-07-17 16:29:40 +02:00 committed by GitHub
parent 55c9579875 fdc96b05cf
commit dfa2c562f0
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588 changed files with 10737 additions and 2359 deletions
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7
.gitignore vendored
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@ -1,4 +1,5 @@
*/bin/*
bin/
*.class
@ -21,6 +22,9 @@
*.iws
out/
# VSCode
.vscode/
# Mac
.DS_Store
@ -77,4 +81,5 @@ apache-avro/src/main/java/com/baeldung/avro/model/
jta/transaction-logs/
software-security/sql-injection-samples/derby.log
spring-soap/src/main/java/com/baeldung/springsoap/gen/
/report-*.json
/report-*.json
transaction.log

3
algorithms-miscellaneous-1/pom.xml
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@ -42,7 +42,7 @@
<dependency>
<groupId>com.github.dpaukov</groupId>
<artifactId>combinatoricslib3</artifactId>
<version>3.3.0</version>
<version>${combinatoricslib3.version}</version>
</dependency>
</dependencies>
@ -83,6 +83,7 @@
<org.assertj.core.version>3.9.0</org.assertj.core.version>
<commons-codec.version>1.11</commons-codec.version>
<guava.version>27.0.1-jre</guava.version>
<combinatoricslib3.version>3.3.0</combinatoricslib3.version>
</properties>
</project>

2
algorithms-miscellaneous-3/README.md
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@ -5,3 +5,5 @@
- [Converting Between Roman and Arabic Numerals in Java](http://www.baeldung.com/java-convert-roman-arabic)
- [Practical Java Examples of the Big O Notation](http://www.baeldung.com/java-algorithm-complexity)
- [Checking If a List Is Sorted in Java](https://www.baeldung.com/java-check-if-list-sorted)
- [Checking if a Java Graph has a Cycle](https://www.baeldung.com/java-graph-has-a-cycle)
- [A Guide to the Folding Technique in Java](https://www.baeldung.com/folding-hashing-technique)

2
apache-avro/pom.xml
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@ -17,7 +17,7 @@
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.10</version>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<dependency>

25
apache-olingo/olingo2/pom.xml
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@ -3,37 +3,28 @@
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.3.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<groupId>org.baeldung.examples.olingo2</groupId>
<artifactId>olingo2-sample</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>olingo2-sample</name>
<description>Sample Olingo 2 Project</description>
<properties>
<java.version>1.8</java.version>
<olingo2.version>2.0.11</olingo2.version>
</properties>
<parent>
<artifactId>parent-boot-2</artifactId>
<groupId>com.baeldung</groupId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../../parent-boot-2</relativePath>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jersey</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
@ -90,4 +81,8 @@
</plugins>
</build>
<properties>
<olingo2.version>2.0.11</olingo2.version>
</properties>
</project>

2
apache-olingo/olingo2/src/test/java/org/baeldung/examples/olingo2/Olingo2SampleApplicationTests.java → apache-olingo/olingo2/src/test/java/org/baeldung/examples/olingo2/Olingo2SampleApplicationUnitTest.java
View File

@ -7,7 +7,7 @@ import org.springframework.test.context.junit4.SpringRunner;
@RunWith(SpringRunner.class)
@SpringBootTest
public class Olingo2SampleApplicationTests {
public class Olingo2SampleApplicationUnitTest {
@Test
public void contextLoads() {

7
apache-pulsar/pom.xml
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@ -7,6 +7,13 @@
<version>0.0.1</version>
<name>apache-pulsar</name>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-modules</artifactId>
<version>1.0.0-SNAPSHOT</version>
<relativePath>..</relativePath>
</parent>
<dependencies>
<dependency>
<groupId>org.apache.pulsar</groupId>

2
apache-pulsar/src/main/java/com/baeldung/ConsumerTest.java → apache-pulsar/src/main/java/com/baeldung/ConsumerUnitTest.java Executable file → Normal file
View File

@ -7,7 +7,7 @@ import org.apache.pulsar.client.api.Message;
import org.apache.pulsar.client.api.PulsarClient;
import org.apache.pulsar.client.api.SubscriptionType;
public class ConsumerTest {
public class ConsumerUnitTest {
private static final String SERVICE_URL = "pulsar://localhost:6650";
private static final String TOPIC_NAME = "test-topic";

2
apache-pulsar/src/main/java/com/baeldung/ProducerTest.java → apache-pulsar/src/main/java/com/baeldung/ProducerUnitTest.java Executable file → Normal file
View File

@ -11,7 +11,7 @@ import org.apache.pulsar.client.api.PulsarClientException;
import java.io.IOException;
import java.util.stream.IntStream;
public class ProducerTest {
public class ProducerUnitTest {
private static final String SERVICE_URL = "pulsar://localhost:6650";
private static final String TOPIC_NAME = "test-topic";

2
apache-pulsar/src/main/java/com/baeldung/subscriptions/ExclusiveSubscriptionTest.java → apache-pulsar/src/main/java/com/baeldung/subscriptions/ExclusiveSubscriptionUnitTest.java
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@ -10,7 +10,7 @@ import org.apache.pulsar.client.api.SubscriptionType;
import java.util.stream.IntStream;
public class ExclusiveSubscriptionTest {
public class ExclusiveSubscriptionUnitTest {
private static final String SERVICE_URL = "pulsar://localhost:6650";
private static final String TOPIC_NAME = "test-topic";
private static final String SUBSCRIPTION_NAME = "test-subscription";

2
apache-pulsar/src/main/java/com/baeldung/subscriptions/FailoverSubscriptionTest.java → apache-pulsar/src/main/java/com/baeldung/subscriptions/FailoverSubscriptionUnitTest.java
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@ -11,7 +11,7 @@ import org.apache.pulsar.client.api.SubscriptionType;
import java.util.stream.IntStream;
public class FailoverSubscriptionTest {
public class FailoverSubscriptionUnitTest {
private static final String SERVICE_URL = "pulsar://localhost:6650";
private static final String TOPIC_NAME = "failover-subscription-test-topic";
private static final String SUBSCRIPTION_NAME = "test-subscription";

2
apache-spark/pom.xml
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@ -49,6 +49,7 @@
<version>${com.datastax.spark.spark-cassandra-connector-java.version}</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
@ -78,6 +79,7 @@
</plugin>
</plugins>
</build>
<properties>
<org.apache.spark.spark-core.version>2.3.0</org.apache.spark.spark-core.version>
<org.apache.spark.spark-sql.version>2.3.0</org.apache.spark.spark-sql.version>

1
autovalue/README.md
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@ -1,3 +1,4 @@
### Relevant Articles:
- [Introduction to AutoValue](http://www.baeldung.com/introduction-to-autovalue)
- [Introduction to AutoFactory](http://www.baeldung.com/autofactory)
- [Google AutoService](https://www.baeldung.com/google-autoservice)

1
aws/pom.xml
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@ -112,7 +112,6 @@
</repositories>
<properties>
<commons-io.version>2.5</commons-io.version>
<aws-lambda-java-events.version>1.3.0</aws-lambda-java-events.version>
<aws-lambda-java-core.version>1.1.0</aws-lambda-java-core.version>
<gson.version>2.8.0</gson.version>

1
bootique/pom.xml
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@ -65,7 +65,6 @@
<properties>
<main.class>com.baeldung.bootique.App</main.class>
<bootique-bom.version>0.23</bootique-bom.version>
<maven-shade-plugin.version>2.4.3</maven-shade-plugin.version>
</properties>

3
core-groovy-2/README.md
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@ -6,4 +6,5 @@
- [Template Engines in Groovy](https://www.baeldung.com/groovy-template-engines)
- [Groovy def Keyword](https://www.baeldung.com/groovy-def-keyword)
- [Pattern Matching in Strings in Groovy](https://www.baeldung.com/groovy-pattern-matching)
- [Working with XML in Groovy](https://www.baeldung.com/groovy-xml)
- [Working with XML in Groovy](https://www.baeldung.com/groovy-xml)
- [Integrating Groovy into Java Applications](https://www.baeldung.com/groovy-java-applications)

29
core-groovy-2/pom.xml
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@ -157,27 +157,24 @@
</repositories>
<pluginRepositories>
<pluginRepository>
<id>bintray</id>
<name>Groovy Bintray</name>
<url>https://dl.bintray.com/groovy/maven</url>
<releases>
<!-- avoid automatic updates -->
<updatePolicy>never</updatePolicy>
</releases>
<snapshots>
<enabled>false</enabled>
</snapshots>
</pluginRepository>
</pluginRepositories>
<pluginRepository>
<id>bintray</id>
<name>Groovy Bintray</name>
<url>https://dl.bintray.com/groovy/maven</url>
<releases>
<!-- avoid automatic updates -->
<updatePolicy>never</updatePolicy>
</releases>
<snapshots>
<enabled>false</enabled>
</snapshots>
</pluginRepository>
</pluginRepositories>
<properties>
<junit.platform.version>1.0.0</junit.platform.version>
<hsqldb.version>2.4.0</hsqldb.version>
<spock-core.version>1.1-groovy-2.4</spock-core.version>
<commons-lang3.version>3.9</commons-lang3.version>
<java.version>1.8</java.version>
<maven-compiler-plugin.version>3.8.1</maven-compiler-plugin.version>
<logback.version>1.2.3</logback.version>
<groovy.version>2.5.7</groovy.version>

52
core-groovy-2/src/main/groovy/com/baeldung/concatenate/Wonder.groovy Normal file
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@ -0,0 +1,52 @@
package com.baeldung.concatenate
class Wonder {
String numOfWonder = 'seven'
String operator_plus() {
return 'The ' + numOfWonder + ' wonders of the world'
}
String operator_left() {
return 'The ' << numOfWonder << ' wonders of ' << 'the world'
}
String interpolation_one() {
return "The $numOfWonder wonders of the world"
}
String interpolation_two() {
return "The ${numOfWonder} wonders of the world"
}
String multilineString() {
return """
There are $numOfWonder wonders of the world.
Can you name them all?
1. The Great Pyramid of Giza
2. Hanging Gardens of Babylon
3. Colossus of Rhode
4. Lighthouse of Alexendra
5. Temple of Artemis
6. Status of Zeus at Olympia
7. Mausoleum at Halicarnassus
"""
}
String method_concat() {
return 'The '.concat(numOfWonder).concat(' wonders of the world')
}
String method_builder() {
return new StringBuilder()
.append('The ').append(numOfWonder).append(' wonders of the world')
}
String method_buffer() {
return new StringBuffer()
.append('The ').append(numOfWonder).append(' wonders of the world')
}
}

69
core-groovy-2/src/test/groovy/com/baeldung/concatenate/WonderUnitTest.groovy Normal file
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@ -0,0 +1,69 @@
package com.baeldung.concatenate
import org.junit.Before
import org.junit.Test
import static org.junit.Assert.*
class WonderUnitTest {
static final String EXPECTED_SINGLE_LINE = "The seven wonders of the world"
Wonder wonder
@Before
void before() {
wonder = new Wonder()
}
@Test
void whenUsingOperatorPlus_thenConcatCorrectly() {
assertEquals(EXPECTED_SINGLE_LINE, wonder.operator_plus())
}
@Test
void whenUsingOperatorLeft_thenConcatCorrectly() {
assertEquals(EXPECTED_SINGLE_LINE, wonder.operator_left())
}
@Test
void whenUsingInterpolationOne_thenConcatCorrectly() {
assertEquals(EXPECTED_SINGLE_LINE, wonder.interpolation_one())
}
@Test
void whenUsingInterpolationTwo_thenConcatCorrectly() {
assertEquals(EXPECTED_SINGLE_LINE, wonder.interpolation_two())
}
@Test
void whenUsingMultiline_thenConcatCorrectly() {
def expectedMultiline = """
There are seven wonders of the world.
Can you name them all?
1. The Great Pyramid of Giza
2. Hanging Gardens of Babylon
3. Colossus of Rhode
4. Lighthouse of Alexendra
5. Temple of Artemis
6. Status of Zeus at Olympia
7. Mausoleum at Halicarnassus
"""
assertEquals(expectedMultiline, wonder.multilineString())
}
@Test
void whenUsingMethodConcat_thenConcatCorrectly() {
assertEquals(EXPECTED_SINGLE_LINE, wonder.method_concat())
}
@Test
void whenUsingMethodBuilder_thenConcatCorrectly() {
assertEquals(EXPECTED_SINGLE_LINE, wonder.method_builder())
}
@Test
void whenUsingMethodBuffer_thenConcatCorrectly() {
assertEquals(EXPECTED_SINGLE_LINE, wonder.method_buffer())
}
}

1
core-java-modules/README.md
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@ -3,3 +3,4 @@
- [Multi-Module Maven Application with Java Modules](https://www.baeldung.com/maven-multi-module-project-java-jpms)
- [Guide to Java FileChannel](https://www.baeldung.com/java-filechannel)
- [Understanding the NumberFormatException in Java](https://www.baeldung.com/java-number-format-exception)
- [Will an Error Be Caught by Catch Block in Java?](https://www.baeldung.com/java-error-catch)

1
core-java-modules/core-java-10/README.md
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@ -5,3 +5,4 @@
- [Guide to Java 10](http://www.baeldung.com/java-10-overview)
- [Copy a List to Another List in Java](http://www.baeldung.com/java-copy-list-to-another)
- [Deep Dive Into the New Java JIT Compiler – Graal](https://www.baeldung.com/graal-java-jit-compiler)
- [Copying Sets in Java](https://www.baeldung.com/java-copy-sets)

3
core-java-modules/core-java-11/src/main/java/com/baeldung/predicate/not/README.md Normal file
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@ -0,0 +1,3 @@
## Relevant articles:
- [Negate a Predicate Method Reference with Java 11](https://www.baeldung.com/java-negate-predicate-method-reference)

3
core-java-modules/core-java-12/README.md Normal file
View File

@ -0,0 +1,3 @@
## Relevant articles:
- [String API Updates in Java 12](https://www.baeldung.com/java12-string-api)

1
core-java-modules/core-java-8-2/README.md
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@ -6,3 +6,4 @@
- [Anonymous Classes in Java](http://www.baeldung.com/)
- [How to Delay Code Execution in Java](https://www.baeldung.com/java-delay-code-execution)
- [Run JAR Application With Command Line Arguments](https://www.baeldung.com/java-run-jar-with-arguments)
- [Java 8 Stream skip() vs limit()](https://www.baeldung.com/java-stream-skip-vs-limit)

23
core-java-modules/core-java-8-2/pom.xml
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@ -9,7 +9,6 @@
<name>core-java-8-2</name>
<packaging>jar</packaging>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-java</artifactId>
@ -17,19 +16,18 @@
<relativePath>../../parent-java</relativePath>
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<icu.version>64.2</icu.version>
</properties>
<dependencies>
<dependency>
<groupId>com.ibm.icu</groupId>
<artifactId>icu4j</artifactId>
<version>${icu.version}</version>
</dependency>
<dependency>
<groupId>org.assertj</groupId>
<artifactId>assertj-core</artifactId>
<version>${assertj.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
@ -44,6 +42,13 @@
</configuration>
</plugin>
</plugins>
</build>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<icu.version>64.2</icu.version>
<assertj.version>3.12.2</assertj.version>
</properties>
</project>

164
core-java-modules/core-java-8-2/src/test/java/com/baeldung/bifunction/BiFunctionalInterfacesUnitTest.java Normal file
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@ -0,0 +1,164 @@
package com.baeldung.bifunction;
import org.junit.Test;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Comparator;
import java.util.List;
import java.util.function.BiFunction;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import static org.assertj.core.api.Assertions.assertThat;
public class BiFunctionalInterfacesUnitTest {
@Test
public void givenStreamValues_whenMappedToNewValues() {
List<String> mapped = Stream.of("hello", "world")
.map(word -> word + "!")
.collect(Collectors.toList());
assertThat(mapped).containsExactly("hello!", "world!");
}
@Test
public void givenStreamValues_whenReducedWithPrefixingOperation() {
String result = Stream.of("hello", "world")
.reduce("", (a, b) -> b + "-" + a);
assertThat(result).isEqualTo("world-hello-");
}
@Test
public void givenStreamValues_whenReducedWithPrefixingLambda_thenHasNoTrailingDash() {
String result = Stream.of("hello", "world")
.reduce("", (a, b) -> combineWithoutTrailingDash(a, b));
assertThat(result).isEqualTo("world-hello");
}
private String combineWithoutTrailingDash(String a, String b) {
if (a.isEmpty()) {
return b;
}
return b + "-" + a;
}
@Test
public void givenStreamValues_whenReducedWithPrefixingMethodReference_thenHasNoTrailingDash() {
String result = Stream.of("hello", "world")
.reduce("", this::combineWithoutTrailingDash);
assertThat(result).isEqualTo("world-hello");
}
@Test
public void givenTwoLists_whenCombined() {
List<String> list1 = Arrays.asList("a", "b", "c");
List<Integer> list2 = Arrays.asList(1, 2, 3);
List<String> result = new ArrayList<>();
for (int i=0; i < list1.size(); i++) {
result.add(list1.get(i) + list2.get(i));
}
assertThat(result).containsExactly("a1", "b2", "c3");
}
@Test
public void givenTwoLists_whenCombinedWithGeneralPurposeCombiner() {
List<String> list1 = Arrays.asList("a", "b", "c");
List<Integer> list2 = Arrays.asList(1, 2, 3);
List<String> result = listCombiner(list1, list2, (a, b) -> a + b);
assertThat(result).containsExactly("a1", "b2", "c3");
}
private static <T, U, R> List<R> listCombiner(List<T> list1,
List<U> list2,
BiFunction<T, U, R> combiner) {
List<R> result = new ArrayList<>();
for (int i = 0; i < list1.size(); i++) {
result.add(combiner.apply(list1.get(i), list2.get(i)));
}
return result;
}
@Test
public void givenTwoLists_whenComparedWithCombiningFunction() {
List<Double> list1 = Arrays.asList(1.0d, 2.1d, 3.3d);
List<Float> list2 = Arrays.asList(0.1f, 0.2f, 4f);
// algorithm to determine if the value in list1 > value in list 2
List<Boolean> result = listCombiner(list1, list2, (a, b) -> a > b);
assertThat(result).containsExactly(true, true, false);
}
@Test
public void givenTwoLists_whenComparedWithCombiningFunctionByMethodReference() {
List<Double> list1 = Arrays.asList(1.0d, 2.1d, 3.3d);
List<Float> list2 = Arrays.asList(0.1f, 0.2f, 4f);
// algorithm to determine if the value in list1 > value in list 2
List<Boolean> result = listCombiner(list1, list2, this::firstIsGreaterThanSecond);
assertThat(result).containsExactly(true, true, false);
}
private boolean firstIsGreaterThanSecond(Double a, Float b) {
return a > b;
}
@Test
public void givenTwoLists_whenComparedForEqualityByCombiningFunction() {
List<Float> list1 = Arrays.asList(0.1f, 0.2f, 4f);
List<Float> list2 = Arrays.asList(0.1f, 0.2f, 4f);
List<Boolean> result = listCombiner(list1, list2, (a, b) -> a.equals(b));
assertThat(result).containsExactly(true, true, true);
}
@Test
public void givenTwoLists_whenComparedForEqualityByCombiningFunctionWithMethodReference() {
List<Float> list1 = Arrays.asList(0.1f, 0.2f, 4f);
List<Float> list2 = Arrays.asList(0.1f, 0.2f, 4f);
List<Boolean> result = listCombiner(list1, list2, Float::equals);
assertThat(result).containsExactly(true, true, true);
}
@Test
public void givenTwoLists_whenComparedWithCombiningFunctionWithCompareTo() {
List<Double> list1 = Arrays.asList(1.0d, 2.1d, 3.3d);
List<Double> list2 = Arrays.asList(0.1d, 0.2d, 4d);
List<Integer> result = listCombiner(list1, list2, Double::compareTo);
assertThat(result).containsExactly(1, 1, -1);
}
/**
* Allows you to to pass in a lambda or method reference and then
* get access to the BiFunction it is meant to become
*/
private static <T, U, R> BiFunction<T, U, R> asBiFunction(BiFunction<T, U, R> function) {
return function;
}
@Test
public void givenTwoLists_whenComparedWithCombiningFunctionWithComposedBiFunction() {
List<Double> list1 = Arrays.asList(1.0d, 2.1d, 3.3d);
List<Double> list2 = Arrays.asList(0.1d, 0.2d, 4d);
List<Boolean> result = listCombiner(list1, list2,
asBiFunction(Double::compareTo)
.andThen(i -> i > 0));
assertThat(result).containsExactly(true, true, false);
}
}

1
core-java-modules/core-java-8/README.md
View File

@ -40,3 +40,4 @@
- [Java 8 Predicate Chain](https://www.baeldung.com/java-predicate-chain)
- [Method References in Java](https://www.baeldung.com/java-method-references)
- [Creating a Custom Annotation in Java](https://www.baeldung.com/java-custom-annotation)
- [The Difference Between Collection.stream().forEach() and Collection.forEach()](https://www.baeldung.com/java-collection-stream-foreach)

1
core-java-modules/core-java-8/pom.xml
View File

@ -175,7 +175,6 @@
<properties>
<!-- util -->
<commons-lang3.version>3.5</commons-lang3.version>
<commons-math3.version>3.6.1</commons-math3.version>
<commons-collections4.version>4.1</commons-collections4.version>
<collections-generic.version>4.01</collections-generic.version>

11
core-java-modules/core-java-8/src/test/java/com/baeldung/java8/optional/OptionalUnitTest.java
View File

@ -259,4 +259,15 @@ public class OptionalUnitTest {
LOG.debug("Getting default value...");
return "Default Value";
}
// Uncomment code when code base is compatiable with Java 11
// @Test
// public void givenAnEmptyOptional_thenIsEmptyBehavesAsExpected() {
// Optional<String> opt = Optional.of("Baeldung");
// assertFalse(opt.isEmpty());
//
// opt = Optional.ofNullable(null);
// assertTrue(opt.isEmpty());
// }
}

2
core-java-modules/core-java-arrays/pom.xml
View File

@ -389,7 +389,7 @@
<properties>
<!-- util -->
<commons-lang3.version>3.8.1</commons-lang3.version>
<commons-lang3.version>3.9</commons-lang3.version>
<jmh-core.version>1.19</jmh-core.version>
<jmh-generator-annprocess.version>1.19</jmh-generator-annprocess.version>

49
core-java-modules/core-java-arrays/src/main/java/com/baeldung/array/JaggedArray.java
View File

@ -1,49 +0,0 @@
package com.baeldung.array;
import java.util.Arrays;
import java.util.Scanner;
public class JaggedArray {
int[][] shortHandFormInitialization() {
int[][] jaggedArr = { { 1, 2 }, { 3, 4, 5 }, { 6, 7, 8, 9 } };
return jaggedArr;
}
int[][] declarationAndThenInitialization() {
int[][] jaggedArr = new int[3][];
jaggedArr[0] = new int[] { 1, 2 };
jaggedArr[1] = new int[] { 3, 4, 5 };
jaggedArr[2] = new int[] { 6, 7, 8, 9 };
return jaggedArr;
}
int[][] declarationAndThenInitializationUsingUserInputs() {
int[][] jaggedArr = new int[3][];
jaggedArr[0] = new int[2];
jaggedArr[1] = new int[3];
jaggedArr[2] = new int[4];
initializeElements(jaggedArr);
return jaggedArr;
}
void initializeElements(int[][] jaggedArr) {
Scanner sc = new Scanner(System.in);
for (int outer = 0; outer < jaggedArr.length; outer++) {
for (int inner = 0; inner < jaggedArr[outer].length; inner++) {
jaggedArr[outer][inner] = sc.nextInt();
}
}
}
void printElements(int[][] jaggedArr) {
for (int index = 0; index < jaggedArr.length; index++) {
System.out.println(Arrays.toString(jaggedArr[index]));
}
}
int[] getElementAtGivenIndex(int[][] jaggedArr, int index) {
return jaggedArr[index];
}
}

83
core-java-modules/core-java-arrays/src/main/java/com/baeldung/array/MultiDimensionalArray.java Normal file
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@ -0,0 +1,83 @@
package com.baeldung.array;
import java.util.Arrays;
import java.util.Scanner;
public class MultiDimensionalArray {
int[][] shortHandFormInitialization() {
int[][] multiDimensionalArray = { { 1, 2 }, { 3, 4, 5 }, { 6, 7, 8, 9 } };
return multiDimensionalArray;
}
int[][] declarationAndThenInitialization() {
int[][] multiDimensionalArray = new int[3][];
multiDimensionalArray[0] = new int[] { 1, 2 };
multiDimensionalArray[1] = new int[] { 3, 4, 5 };
multiDimensionalArray[2] = new int[] { 6, 7, 8, 9 };
return multiDimensionalArray;
}
int[][] declarationAndThenInitializationUsingUserInputs() {
int[][] multiDimensionalArray = new int[3][];
multiDimensionalArray[0] = new int[2];
multiDimensionalArray[1] = new int[3];
multiDimensionalArray[2] = new int[4];
initializeElements(multiDimensionalArray);
return multiDimensionalArray;
}
void initializeElements(int[][] multiDimensionalArray) {
Scanner sc = new Scanner(System.in);
for (int outer = 0; outer < multiDimensionalArray.length; outer++) {
for (int inner = 0; inner < multiDimensionalArray[outer].length; inner++) {
multiDimensionalArray[outer][inner] = sc.nextInt();
}
}
}
void initialize2DArray(int[][] multiDimensionalArray) {
for (int[] array : multiDimensionalArray) {
Arrays.fill(array, 7);
}
}
void printElements(int[][] multiDimensionalArray) {
for (int index = 0; index < multiDimensionalArray.length; index++) {
System.out.println(Arrays.toString(multiDimensionalArray[index]));
}
}
int[] getElementAtGivenIndex(int[][] multiDimensionalArray, int index) {
return multiDimensionalArray[index];
}
int[] findLengthOfElements(int[][] multiDimensionalArray) {
int[] arrayOfLengths = new int[multiDimensionalArray.length];
for (int i = 0; i < multiDimensionalArray.length; i++) {
arrayOfLengths[i] = multiDimensionalArray[i].length;
}
return arrayOfLengths;
}
Integer[] findLengthOfElements(Integer[][] multiDimensionalArray) {
return Arrays.stream(multiDimensionalArray)
.map(array -> array.length)
.toArray(Integer[]::new);
}
int[][] copy2DArray(int[][] arrayOfArrays) {
int[][] copied2DArray = new int[arrayOfArrays.length][];
for (int i = 0; i < arrayOfArrays.length; i++) {
int[] array = arrayOfArrays[i];
copied2DArray[i] = Arrays.copyOf(array, array.length);
}
return copied2DArray;
}
Integer[][] copy2DArray(Integer[][] arrayOfArrays) {
return Arrays.stream(arrayOfArrays)
.map(array -> Arrays.copyOf(array, array.length))
.toArray(Integer[][]::new);
}
}

27
core-java-modules/core-java-arrays/src/main/java/com/baeldung/array/RemoveElementFromAnArray.java Normal file
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@ -0,0 +1,27 @@
package com.baeldung.array;
import org.apache.commons.lang3.ArrayUtils;
public class RemoveElementFromAnArray {
public int[] removeAnElementWithAGivenIndex(int[] array, int index) {
return ArrayUtils.remove(array, index);
}
public int[] removeAllElementsWithGivenIndices(int[] array, int... indicies) {
return ArrayUtils.removeAll(array, indicies);
}
public int[] removeFirstOccurrenceOfGivenElement(int[] array, int element) {
return ArrayUtils.removeElement(array, element);
}
public int[] removeAllGivenElements(int[] array, int... elements) {
return ArrayUtils.removeElements(array, elements);
}
public int[] removeAllOccurrencesOfAGivenElement(int[] array, int element) {
return ArrayUtils.removeAllOccurences(array, element);
}
}

71
core-java-modules/core-java-arrays/src/main/java/com/baeldung/array/SortedArrayChecker.java Normal file
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@ -0,0 +1,71 @@
package com.baeldung.array;
import com.baeldung.arraycopy.model.Employee;
public class SortedArrayChecker {
boolean isSorted(int[] array, int length) {
if (array == null || length < 2)
return true;
if (array[length - 2] > array[length - 1])
return false;
return isSorted(array, length - 1);
}
boolean isSorted(int[] array) {
for (int i = 0; i < array.length - 1; i++) {
if (array[i] > array[i + 1])
return false;
}
return true;
}
boolean isSorted(String[] array, int length) {
if (array == null || length < 2)
return true;
if (array[length - 2].compareTo(array[length - 1]) > 0)
return false;
return isSorted(array, length - 1);
}
boolean isSorted(String[] array) {
for (int i = 0; i < array.length - 1; ++i) {
if (array[i].compareTo(array[i + 1]) > 0)
return false;
}
return true;
}
boolean isSortedByName(Employee[] array) {
for (int i = 0; i < array.length - 1; ++i) {
if (array[i].getName().compareTo(array[i + 1].getName()) > 0)
return false;
}
return true;
}
boolean isSortedByAge(Employee[] array) {
for (int i = 0; i < array.length - 1; ++i) {
if (array[i].getAge() > (array[i + 1].getAge()))
return false;
}
return true;
}
boolean isSortedByAge(Employee[] array, int length) {
if (array == null || length < 2)
return true;
if (array[length - 2].getAge() > array[length - 1].getAge())
return false;
return isSortedByAge(array, length - 1);
}
}

15
core-java-modules/core-java-arrays/src/main/java/com/baeldung/arraycopy/model/Employee.java
View File

@ -6,6 +6,7 @@ public class Employee implements Serializable {
private static final long serialVersionUID = -2454619097207585825L;
private int id;
private String name;
private int age;
public Employee() {
}
@ -15,10 +16,24 @@ public class Employee implements Serializable {
this.name = name;
}
public Employee(int id, String name, int age) {
this.id = id;
this.name = name;
this.age = age;
}
public int getAge() {
return age;
}
public int getId() {
return id;
}
public void setAge(int age) {
this.age = age;
}
public void setId(int id) {
this.id = id;
}

53
core-java-modules/core-java-arrays/src/test/java/com/baeldung/array/JaggedArrayUnitTest.java
View File

@ -1,53 +0,0 @@
package com.baeldung.array;
import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertEquals;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.io.PrintStream;
import org.junit.Test;
public class JaggedArrayUnitTest {
private JaggedArray obj = new JaggedArray();
@Test
public void whenInitializedUsingShortHandForm_thenCorrect() {
assertArrayEquals(new int[][] { { 1, 2 }, { 3, 4, 5 }, { 6, 7, 8, 9 } }, obj.shortHandFormInitialization());
}
@Test
public void whenInitializedWithDeclarationAndThenInitalization_thenCorrect() {
assertArrayEquals(new int[][] { { 1, 2 }, { 3, 4, 5 }, { 6, 7, 8, 9 } }, obj.declarationAndThenInitialization());
}
@Test
public void whenInitializedWithDeclarationAndThenInitalizationUsingUserInputs_thenCorrect() {
InputStream is = new ByteArrayInputStream("1 2 3 4 5 6 7 8 9".getBytes());
System.setIn(is);
assertArrayEquals(new int[][] { { 1, 2 }, { 3, 4, 5 }, { 6, 7, 8, 9 } }, obj.declarationAndThenInitializationUsingUserInputs());
System.setIn(System.in);
}
@Test
public void givenJaggedArrayAndAnIndex_thenReturnArrayAtGivenIndex() {
int[][] jaggedArr = { { 1, 2 }, { 3, 4, 5 }, { 6, 7, 8, 9 } };
assertArrayEquals(new int[] { 1, 2 }, obj.getElementAtGivenIndex(jaggedArr, 0));
assertArrayEquals(new int[] { 3, 4, 5 }, obj.getElementAtGivenIndex(jaggedArr, 1));
assertArrayEquals(new int[] { 6, 7, 8, 9 }, obj.getElementAtGivenIndex(jaggedArr, 2));
}
@Test
public void givenJaggedArray_whenUsingArraysAPI_thenVerifyPrintedElements() {
int[][] jaggedArr = { { 1, 2 }, { 3, 4, 5 }, { 6, 7, 8, 9 } };
ByteArrayOutputStream outContent = new ByteArrayOutputStream();
System.setOut(new PrintStream(outContent));
obj.printElements(jaggedArr);
assertEquals("[1, 2][3, 4, 5][6, 7, 8, 9]", outContent.toString().replace("\r", "").replace("\n", ""));
System.setOut(System.out);
}
}

86
core-java-modules/core-java-arrays/src/test/java/com/baeldung/array/MultiDimensionalArrayUnitTest.java Normal file
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@ -0,0 +1,86 @@
package com.baeldung.array;
import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertEquals;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.io.PrintStream;
import org.junit.Test;
public class MultiDimensionalArrayUnitTest {
private MultiDimensionalArray obj = new MultiDimensionalArray();
@Test
public void whenInitializedUsingShortHandForm_thenCorrect() {
assertArrayEquals(new int[][] { { 1, 2 }, { 3, 4, 5 }, { 6, 7, 8, 9 } }, obj.shortHandFormInitialization());
}
@Test
public void whenInitializedWithDeclarationAndThenInitalization_thenCorrect() {
assertArrayEquals(new int[][] { { 1, 2 }, { 3, 4, 5 }, { 6, 7, 8, 9 } }, obj.declarationAndThenInitialization());
}
@Test
public void whenInitializedWithDeclarationAndThenInitalizationUsingUserInputs_thenCorrect() {
InputStream is = new ByteArrayInputStream("1 2 3 4 5 6 7 8 9".getBytes());
System.setIn(is);
assertArrayEquals(new int[][] { { 1, 2 }, { 3, 4, 5 }, { 6, 7, 8, 9 } }, obj.declarationAndThenInitializationUsingUserInputs());
System.setIn(System.in);
}
@Test
public void givenMultiDimensionalArrayAndAnIndex_thenReturnArrayAtGivenIndex() {
int[][] multiDimensionalArr = { { 1, 2 }, { 3, 4, 5 }, { 6, 7, 8, 9 } };
assertArrayEquals(new int[] { 1, 2 }, obj.getElementAtGivenIndex(multiDimensionalArr, 0));
assertArrayEquals(new int[] { 3, 4, 5 }, obj.getElementAtGivenIndex(multiDimensionalArr, 1));
assertArrayEquals(new int[] { 6, 7, 8, 9 }, obj.getElementAtGivenIndex(multiDimensionalArr, 2));
}
@Test
public void givenMultiDimensionalArray_whenUsingArraysAPI_thenVerifyPrintedElements() {
int[][] multiDimensionalArr = { { 1, 2 }, { 3, 4, 5 }, { 6, 7, 8, 9 } };
ByteArrayOutputStream outContent = new ByteArrayOutputStream();
System.setOut(new PrintStream(outContent));
obj.printElements(multiDimensionalArr);
assertEquals("[1, 2][3, 4, 5][6, 7, 8, 9]", outContent.toString().replace("\r", "").replace("\n", ""));
System.setOut(System.out);
}
@Test
public void givenMultiDimensionalArray_whenUsingArraysFill_thenVerifyInitialize2DArray() {
int[][] multiDimensionalArr = new int[3][];
multiDimensionalArr[0] = new int[2];
multiDimensionalArr[1] = new int[3];
multiDimensionalArr[2] = new int[4];
obj.initialize2DArray(multiDimensionalArr);
assertArrayEquals(new int[][] {{7,7}, {7,7,7}, {7,7,7,7}}, multiDimensionalArr);
}
@Test
public void givenMultiDimensionalArray_whenUsingIteration_thenVerifyFindLengthOfElements() {
int[][] multiDimensionalArr = { { 1, 2 }, { 3, 4, 5 }, { 6, 7, 8, 9 } };
assertArrayEquals(new int[]{2,3,4}, obj.findLengthOfElements(multiDimensionalArr));
}
@Test
public void givenMultiDimensionalArray_whenUsingArraysStream_thenVerifyFindLengthOfElements() {
Integer[][] multiDimensionalArr = { { 1, 2 }, { 3, 4, 5 }, { 6, 7, 8, 9 } };
assertArrayEquals(new Integer[]{2,3,4}, obj.findLengthOfElements(multiDimensionalArr));
}
@Test
public void givenMultiDimensionalArray_whenUsingArraysCopyOf_thenVerifyCopy2DArray() {
int[][] multiDimensionalArr = { { 1, 2 }, { 3, 4, 5 }, { 6, 7, 8, 9 } };
assertArrayEquals(multiDimensionalArr, obj.copy2DArray(multiDimensionalArr));
}
@Test
public void givenMultiDimensionalArray_whenUsingArraysStream_thenVerifyCopy2DArray() {
Integer[][] multiDimensionalArr = { { 1, 2 }, { 3, 4, 5 }, { 6, 7, 8, 9 } };
assertArrayEquals(multiDimensionalArr, obj.copy2DArray(multiDimensionalArr));
}
}

85
core-java-modules/core-java-arrays/src/test/java/com/baeldung/array/RemoveElementFromAnArrayUnitTest.java Normal file
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@ -0,0 +1,85 @@
package com.baeldung.array;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTrue;
import org.apache.commons.lang3.ArrayUtils;
import org.junit.jupiter.api.Test;
class RemoveElementFromAnArrayUnitTest {
private final RemoveElementFromAnArray sut = new RemoveElementFromAnArray();
private final int[] inputArray = new int[] { 40, 10, 20, 30, 40, 50 };
@Test
void testRemoveAnElementWithAGivenIndex() {
int index = 2;
int[] modifiedArray = sut.removeAnElementWithAGivenIndex(inputArray, index);
assertFalse(ArrayUtils.contains(modifiedArray, inputArray[index]));
}
@Test
void testRemoveAllElementsWithGivenIndices() {
int first = 0;
int last = inputArray.length - 1;
int[] modifiedArray = sut.removeAllElementsWithGivenIndices(inputArray, first, last);
assertFalse(ArrayUtils.contains(modifiedArray, inputArray[first]) && ArrayUtils.contains(modifiedArray, inputArray[last]));
}
@Test
void testRemoveElement_WhenArrayIsNull_ThrowsIndexOutOfBoundEx() {
int index = 2;
assertThrows(IndexOutOfBoundsException.class, () -> {
sut.removeAnElementWithAGivenIndex(null, index);
});
assertThrows(IndexOutOfBoundsException.class, () -> {
sut.removeAllElementsWithGivenIndices(null, index);
});
}
@Test
void testRemoveFirstOccurrenceOfGivenElement() {
int element = 40;
int[] modifiedArray = sut.removeFirstOccurrenceOfGivenElement(inputArray, element);
int indexInInputArray = ArrayUtils.indexOf(inputArray, element);
int indexInModifiedArray = ArrayUtils.indexOf(modifiedArray, element);
assertFalse(indexInInputArray == indexInModifiedArray);
}
@Test
void testRemoveAllGivenElements() {
int duplicateElement = 40;
int[] elements = new int[] { duplicateElement, 10, 50 };
int[] modifiedArray = sut.removeAllGivenElements(inputArray, elements);
assertTrue(ArrayUtils.contains(modifiedArray, duplicateElement));
assertFalse(ArrayUtils.contains(modifiedArray, elements[1]));
assertFalse(ArrayUtils.contains(modifiedArray, elements[2]));
}
@Test
void testRemoveAllOccurrencesOfAGivenElement() {
int element = 40;
int[] modifiedArray = sut.removeAllOccurrencesOfAGivenElement(inputArray, element);
assertFalse(ArrayUtils.contains(modifiedArray, element));
}
@Test
void testRemoveElement_WhenArrayIsNull_ReturnsNull() {
int element = 20;
assertEquals(null, sut.removeFirstOccurrenceOfGivenElement(null, element));
assertEquals(null, sut.removeAllGivenElements(null, element));
assertEquals(null, sut.removeAllOccurrencesOfAGivenElement(null, element));
}
}

73
core-java-modules/core-java-arrays/src/test/java/com/baeldung/array/SortedArrayCheckerUnitTest.java Normal file
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@ -0,0 +1,73 @@
package com.baeldung.array;
import com.baeldung.arraycopy.model.Employee;
import org.junit.Before;
import org.junit.Test;
import static org.assertj.core.api.Assertions.assertThat;
class SortedArrayCheckerUnitTest {
private static final int[] INTEGER_SORTED = {1, 3, 5, 7, 9};
private static final int[] INTEGER_NOT_SORTED = {1, 3, 11, 7};
private static final String[] STRING_SORTED = {"abc", "cde", "fgh"};
private static final String[] STRING_NOT_SORTED = {"abc", "fgh", "cde", "ijk"};
private final Employee[] EMPLOYEES_SORTED_BY_NAME = {
new Employee(1, "Carlos", 26),
new Employee(2, "Daniel", 31),
new Employee(3, "Marta", 27)};
private final Employee[] EMPLOYEES_NOT_SORTED_BY_NAME = {
new Employee(1, "Daniel", 31),
new Employee(2, "Carlos", 26),
new Employee(3, "Marta", 27)};
private final Employee[] EMPLOYEES_SORTED_BY_AGE = {
new Employee(1, "Carlos", 26),
new Employee(2, "Marta", 27),
new Employee(3, "Daniel", 31)};
private final Employee[] EMPLOYEES_NOT_SORTED_BY_AGE = {
new Employee(1, "Marta", 27),
new Employee(2, "Carlos", 26),
new Employee(3, "Daniel", 31)};
private SortedArrayChecker sortedArrayChecker;
@Before
public void setup() {
sortedArrayChecker = new SortedArrayChecker();
}
@Test
public void givenIntegerArray_thenReturnIfItIsSortedOrNot() {
assertThat(sortedArrayChecker.isSorted(INTEGER_SORTED)).isEqualTo(true);
assertThat(sortedArrayChecker.isSorted(INTEGER_NOT_SORTED)).isEqualTo(false);
assertThat(sortedArrayChecker.isSorted(INTEGER_SORTED, INTEGER_SORTED.length)).isEqualTo(true);
assertThat(sortedArrayChecker.isSorted(INTEGER_NOT_SORTED, INTEGER_NOT_SORTED.length)).isEqualTo(false);
}
@Test
public void givenStringArray_thenReturnIfItIsSortedOrNot() {
assertThat(sortedArrayChecker.isSorted(STRING_SORTED)).isEqualTo(true);
assertThat(sortedArrayChecker.isSorted(STRING_NOT_SORTED)).isEqualTo(false);
assertThat(sortedArrayChecker.isSorted(STRING_SORTED, STRING_SORTED.length)).isEqualTo(true);
assertThat(sortedArrayChecker.isSorted(STRING_NOT_SORTED, STRING_NOT_SORTED.length)).isEqualTo(false);
}
@Test
public void givenEmployeeArray_thenReturnIfItIsSortedOrNot() {
assertThat(sortedArrayChecker.isSortedByName(EMPLOYEES_SORTED_BY_NAME)).isEqualTo(true);
assertThat(sortedArrayChecker.isSortedByName(EMPLOYEES_NOT_SORTED_BY_NAME)).isEqualTo(false);
assertThat(sortedArrayChecker.isSortedByAge(EMPLOYEES_SORTED_BY_AGE)).isEqualTo(true);
assertThat(sortedArrayChecker.isSortedByAge(EMPLOYEES_NOT_SORTED_BY_AGE)).isEqualTo(false);
assertThat(sortedArrayChecker.isSortedByAge(EMPLOYEES_SORTED_BY_AGE, EMPLOYEES_SORTED_BY_AGE.length)).isEqualTo(true);
assertThat(sortedArrayChecker.isSortedByAge(EMPLOYEES_NOT_SORTED_BY_AGE, EMPLOYEES_NOT_SORTED_BY_AGE.length)).isEqualTo(false);
}
}

1
core-java-modules/core-java-collections-set/README.md
View File

@ -10,3 +10,4 @@
- [Initializing HashSet at the Time of Construction](http://www.baeldung.com/java-initialize-hashset)
- [Guide to EnumSet](https://www.baeldung.com/java-enumset)
- [Set Operations in Java](https://www.baeldung.com/java-set-operations)
- [Copying Sets in Java](https://www.baeldung.com/java-copy-sets)

41
core-java-modules/core-java-collections-set/pom.xml
View File

@ -14,30 +14,31 @@
</parent>
<dependencies>
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>${guava.version}</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-collections4</artifactId>
<version>${commons-collections4.version}</version>
</dependency>
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>2.8.5</version>
</dependency>
<dependency>
<groupId>commons-lang</groupId>
<artifactId>commons-lang</artifactId>
<version>2.6</version>
</dependency>
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>${guava.version}</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-collections4</artifactId>
<version>${commons-collections4.version}</version>
</dependency>
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>${gson.version}</version>
</dependency>
<dependency>
<groupId>commons-lang</groupId>
<artifactId>commons-lang</artifactId>
<version>${commons-lang.version}</version>
</dependency>
</dependencies>
<properties>
<commons-collections4.version>4.3</commons-collections4.version>
<guava.version>27.1-jre</guava.version>
<gson.version>2.8.5</gson.version>
</properties>
</project>

1
core-java-modules/core-java-concurrency-advanced/pom.xml
View File

@ -72,7 +72,6 @@
<properties>
<!-- util -->
<guava.version>21.0</guava.version>
<commons-lang3.version>3.5</commons-lang3.version>
<commons-math3.version>3.6.1</commons-math3.version>
<commons-collections4.version>4.1</commons-collections4.version>
<collections-generic.version>4.01</collections-generic.version>

1
core-java-modules/core-java-concurrency-basic/README.md
View File

@ -17,3 +17,4 @@
- [Runnable vs. Callable in Java](http://www.baeldung.com/java-runnable-callable)
- [What is Thread-Safety and How to Achieve it?](https://www.baeldung.com/java-thread-safety)
- [How to Start a Thread in Java](https://www.baeldung.com/java-start-thread)
- [How to Delay Code Execution in Java](https://www.baeldung.com/java-delay-code-execution)

2
core-java-modules/core-java-concurrency-basic/pom.xml
View File

@ -45,8 +45,6 @@
</build>
<properties>
<!-- util -->
<commons-lang3.version>3.5</commons-lang3.version>
<!-- testing -->
<assertj.version>3.6.1</assertj.version>
<avaitility.version>1.7.0</avaitility.version>

1
core-java-modules/core-java-concurrency-collections/pom.xml
View File

@ -62,7 +62,6 @@
<properties>
<!-- util -->
<guava.version>21.0</guava.version>
<commons-lang3.version>3.5</commons-lang3.version>
<commons-math3.version>3.6.1</commons-math3.version>
<commons-collections4.version>4.1</commons-collections4.version>
<collections-generic.version>4.01</collections-generic.version>

3
core-java-modules/core-java-exceptions/README.md Normal file
View File

@ -0,0 +1,3 @@
## Relevant articles:
- [Will an Error Be Caught by Catch Block in Java?](https://www.baeldung.com/java-error-catch)

10
core-java-modules/core-java-exceptions/pom.xml
View File

@ -14,15 +14,11 @@
<relativePath>../../parent-java</relativePath>
</parent>
<properties>
<commons-lang3.version>3.9</commons-lang3.version>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<dependency>
@ -32,4 +28,8 @@
</dependency>
</dependencies>
<properties>
<commons-lang3.version>3.9</commons-lang3.version>
</properties>
</project>

1
core-java-modules/core-java-io/pom.xml
View File

@ -248,7 +248,6 @@
<properties>
<!-- util -->
<commons-lang3.version>3.5</commons-lang3.version>
<bouncycastle.version>1.55</bouncycastle.version>
<commons-codec.version>1.10</commons-codec.version>
<commons-math3.version>3.6.1</commons-math3.version>

16
core-java-modules/core-java-jpms/decoupling-pattern1/consumermodule/pom.xml
View File

@ -11,6 +11,14 @@
<version>1.0</version>
</parent>
<dependencies>
<dependency>
<groupId>com.baeldung.servicemodule</groupId>
<artifactId>servicemodule</artifactId>
<version>1.0</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
@ -19,12 +27,4 @@
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>com.baeldung.servicemodule</groupId>
<artifactId>servicemodule</artifactId>
<version>1.0</version>
</dependency>
</dependencies>
</project>

11
core-java-modules/core-java-jpms/decoupling-pattern2/consumermodule/pom.xml
View File

@ -2,17 +2,18 @@
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>com.baeldung.decoupling-pattern2</artifactId>
<groupId>decoupling-pattern2</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<groupId>com.baeldung.consumermodule</groupId>
<artifactId>consumermodule</artifactId>
<version>1.0</version>
<parent>
<artifactId>com.baeldung.decoupling-pattern2</artifactId>
<groupId>decoupling-pattern2</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<dependencies>
<dependency>
<groupId>com.baeldung.servicemodule</groupId>

1
core-java-modules/core-java-jvm/pom.xml
View File

@ -35,7 +35,6 @@
</dependencies>
<properties>
<commons-lang3.version>3.5</commons-lang3.version>
<assertj.version>3.6.1</assertj.version>
</properties>
</project>

3
core-java-modules/core-java-lambdas/README.md Normal file
View File

@ -0,0 +1,3 @@
## Relevant articles:
- [Why Do Local Variables Used in Lambdas Have to Be Final or Effectively Final?](https://www.baeldung.com/java-lambda-effectively-final-local-variables)

1
core-java-modules/core-java-lang-oop-2/README.md
View File

@ -6,3 +6,4 @@
- [Generic Constructors in Java](https://www.baeldung.com/java-generic-constructors)
- [Cannot Reference “X” Before Supertype Constructor Has Been Called](https://www.baeldung.com/java-cannot-reference-x-before-supertype-constructor-error)
- [Anonymous Classes in Java](https://www.baeldung.com/java-anonymous-classes)
- [Raw Types in Java](https://www.baeldung.com/raw-types-java)

6
core-java-modules/core-java-lang-oop/pom.xml
View File

@ -75,13 +75,7 @@
</build>
<properties>
<!-- marshalling -->
<jackson.version>2.8.5</jackson.version>
<gson.version>2.8.2</gson.version>
<!-- util -->
<commons-lang3.version>3.5</commons-lang3.version>
<!-- testing -->
<assertj-core.version>3.10.0</assertj-core.version>
<equalsverifier.version>3.0.3</equalsverifier.version>

3
core-java-modules/core-java-lang/pom.xml
View File

@ -75,9 +75,6 @@
<properties>
<gson.version>2.8.2</gson.version>
<!-- util -->
<commons-lang3.version>3.5</commons-lang3.version>
<javax.mail.version>1.5.0-b01</javax.mail.version>

2
core-java-modules/core-java-networking/pom.xml
View File

@ -42,8 +42,6 @@
<properties>
<javax.mail.version>1.5.0-b01</javax.mail.version>
<commons-io.version>2.5</commons-io.version>
<commons-lang3.version>3.5</commons-lang3.version>
<springframework.spring-web.version>4.3.4.RELEASE</springframework.spring-web.version>
</properties>
</project>

2
core-java-modules/core-java-nio/README.md
View File

@ -1,3 +1,3 @@
## Relevant articles:
- [Determine File Creating Date in Java](https://www.baeldung.com/file-creation-date-java)
- [Determine File Creating Date in Java](https://www.baeldung.com/java-file-creation-date)

8
core-java-modules/core-java-nio/pom.xml
View File

@ -8,9 +8,9 @@
<packaging>jar</packaging>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-java</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../../parent-java</relativePath>
<groupId>com.baeldung</groupId>
<artifactId>parent-java</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../../parent-java</relativePath>
</parent>
</project>

3
core-java-modules/core-java-optional/README.md
View File

@ -2,4 +2,5 @@
## Core Java Optional
### Relevant Articles:
### Relevant Articles:
- [Java Optional as Return Type](https://www.baeldung.com/java-optional-return)

39
core-java-modules/core-java-optional/pom.xml
View File

@ -1,22 +1,14 @@
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>com.baeldung.core-java-modules</groupId>
<artifactId>core-java-modules</artifactId>
<version>1.0.0-SNAPSHOT</version>
</parent>
<artifactId>core-java-optional</artifactId>
<version>0.1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<hibernate.core.version>5.4.0.Final</hibernate.core.version>
<h2database.version>1.4.197</h2database.version>
<jackson.databind.version>2.9.8</jackson.databind.version>
</properties>
<modelVersion>4.0.0</modelVersion>
<artifactId>core-java-optional</artifactId>
<version>0.1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<parent>
<groupId>com.baeldung.core-java-modules</groupId>
<artifactId>core-java-modules</artifactId>
<version>1.0.0-SNAPSHOT</version>
</parent>
<dependencies>
<dependency>
@ -27,12 +19,12 @@
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<version>${h2database.version}</version>
<version>${h2.version}</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>${jackson.databind.version}</version>
<version>${jackson.version}</version>
</dependency>
</dependencies>
@ -50,4 +42,11 @@
</plugins>
</build>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<hibernate.core.version>5.4.0.Final</hibernate.core.version>
</properties>
</project>

1
core-java-modules/core-java-os/pom.xml
View File

@ -68,7 +68,6 @@
<properties>
<!-- util -->
<commons-lang3.version>3.5</commons-lang3.version>
<commons-collections4.version>4.1</commons-collections4.version>
<collections-generic.version>4.01</collections-generic.version>

7
core-java-modules/core-java-perf/pom.xml
View File

@ -23,11 +23,4 @@
</dependencies>
<properties>
<!-- util -->
<commons-lang3.version>3.8.1</commons-lang3.version>
</properties>
</project>

1
core-java-modules/core-java-security/pom.xml
View File

@ -43,7 +43,6 @@
<properties>
<!-- util -->
<commons-lang3.version>3.8.1</commons-lang3.version>
<bouncycastle.version>1.60</bouncycastle.version>
<commons-codec.version>1.11</commons-codec.version>

36
core-java-modules/core-java-security/src/main/java/com/baeldung/random/SecureRandomDemo.java Normal file
View File

@ -0,0 +1,36 @@
package com.baeldung.random;
import java.security.SecureRandom;
import java.security.NoSuchAlgorithmException;
import java.util.stream.IntStream;
import java.util.stream.LongStream;
import java.util.stream.DoubleStream;
public interface SecureRandomDemo {
public static void generateSecureRandomValues() {
SecureRandom sr = new SecureRandom();
int randomInt = sr.nextInt();
long randomLong = sr.nextLong();
float randomFloat = sr.nextFloat();
double randomDouble = sr.nextDouble();
boolean randomBoolean = sr.nextBoolean();
IntStream randomIntStream = sr.ints();
LongStream randomLongStream = sr.longs();
DoubleStream randomDoubleStream = sr.doubles();
byte[] values = new byte[124];
sr.nextBytes(values);
}
public static SecureRandom getSecureRandomForAlgorithm(String algorithm) throws NoSuchAlgorithmException {
if (algorithm == null || algorithm.isEmpty()) {
return new SecureRandom();
}
return SecureRandom.getInstance(algorithm);
}
}

1
core-java-modules/core-java-sun/pom.xml
View File

@ -264,7 +264,6 @@
<!-- util -->
<guava.version>23.0</guava.version>
<commons-lang3.version>3.5</commons-lang3.version>
<bouncycastle.version>1.55</bouncycastle.version>
<commons-codec.version>1.10</commons-codec.version>
<commons-math3.version>3.6.1</commons-math3.version>

6
core-java-modules/core-java/pom.xml
View File

@ -13,7 +13,6 @@
<relativePath>../../parent-java</relativePath>
</parent>
<dependencies>
<dependency>
<groupId>commons-io</groupId>
@ -114,7 +113,7 @@
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<version>${h2database.version}</version>
<version>${h2.version}</version>
</dependency>
<!-- instrumentation -->
<dependency>
@ -454,8 +453,6 @@
<gson.version>2.8.2</gson.version>
<!-- util -->
<commons-lang3.version>3.9</commons-lang3.version>
<commons-io.version>2.5</commons-io.version>
<commons-math3.version>3.6.1</commons-math3.version>
<decimal4j.version>1.0.3</decimal4j.version>
<unix4j.version>0.4</unix4j.version>
@ -472,7 +469,6 @@
<maven-surefire-plugin.version>2.21.0</maven-surefire-plugin.version>
<javamoney.moneta.version>1.1</javamoney.moneta.version>
<h2database.version>1.4.197</h2database.version>
<esapi.version>2.1.0.1</esapi.version>
<jmh-core.version>1.19</jmh-core.version>

9
core-java-modules/multimodulemavenproject/daomodule/pom.xml
View File

@ -1,15 +1,16 @@
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.baeldung.daomodule</groupId>
<artifactId>daomodule</artifactId>
<version>1.0</version>
<packaging>jar</packaging>
<parent>
<groupId>com.baeldung.multimodulemavenproject</groupId>
<artifactId>multimodulemavenproject</artifactId>
<version>1.0</version>
</parent>
<groupId>com.baeldung.daomodule</groupId>
<artifactId>daomodule</artifactId>
<version>1.0</version>
<packaging>jar</packaging>
<build>
<plugins>

9
core-java-modules/multimodulemavenproject/entitymodule/pom.xml
View File

@ -1,15 +1,16 @@
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.baeldung.entitymodule</groupId>
<artifactId>entitymodule</artifactId>
<version>1.0</version>
<packaging>jar</packaging>
<parent>
<groupId>com.baeldung.multimodulemavenproject</groupId>
<artifactId>multimodulemavenproject</artifactId>
<version>1.0</version>
</parent>
<groupId>com.baeldung.entitymodule</groupId>
<artifactId>entitymodule</artifactId>
<version>1.0</version>
<packaging>jar</packaging>
<build>
<plugins>

9
core-java-modules/multimodulemavenproject/mainappmodule/pom.xml
View File

@ -1,15 +1,16 @@
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.baeldung.mainappmodule</groupId>
<artifactId>mainappmodule</artifactId>
<version>1.0</version>
<packaging>jar</packaging>
<parent>
<groupId>com.baeldung.multimodulemavenproject</groupId>
<artifactId>multimodulemavenproject</artifactId>
<version>1.0</version>
</parent>
<groupId>com.baeldung.mainappmodule</groupId>
<artifactId>mainappmodule</artifactId>
<version>1.0</version>
<packaging>jar</packaging>
<dependencies>
<dependency>

19
core-java-modules/multimodulemavenproject/pom.xml
View File

@ -14,18 +14,25 @@
<relativePath>../../</relativePath>
</parent>
<modules>
<module>entitymodule</module>
<module>daomodule</module>
<module>userdaomodule</module>
<module>mainappmodule</module>
</modules>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.assertj</groupId>
<artifactId>assertj-core</artifactId>
<version>3.12.2</version>
<version>${assertj-core.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
@ -49,14 +56,8 @@
</pluginManagement>
</build>
<modules>
<module>entitymodule</module>
<module>daomodule</module>
<module>userdaomodule</module>
<module>mainappmodule</module>
</modules>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<assertj-core.version>3.12.2</assertj-core.version>
</properties>
</project>

27
core-java-modules/multimodulemavenproject/userdaomodule/pom.xml
View File

@ -1,24 +1,16 @@
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.baeldung.userdaomodule</groupId>
<artifactId>userdaomodule</artifactId>
<version>1.0</version>
<packaging>jar</packaging>
<parent>
<groupId>com.baeldung.multimodulemavenproject</groupId>
<artifactId>multimodulemavenproject</artifactId>
<version>1.0</version>
</parent>
<groupId>com.baeldung.userdaomodule</groupId>
<artifactId>userdaomodule</artifactId>
<version>1.0</version>
<packaging>jar</packaging>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
@ -33,6 +25,15 @@
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
</plugin>
</plugins>
</build>
<properties>
<maven.compiler.source>9</maven.compiler.source>
<maven.compiler.target>9</maven.compiler.target>

5
core-java-modules/pre-jpms/pom.xml
View File

@ -18,9 +18,10 @@
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.25</version>
<version>${org.slf4j.version}</version>
</dependency>
</dependencies>
<build>
<finalName>pre-jpms</finalName>
<plugins>
@ -65,9 +66,9 @@
</archive>
</configuration>
</plugin>
</plugins>
</build>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>

4
core-kotlin-io/pom.xml
View File

@ -22,7 +22,7 @@
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter</artifactId>
<version>${junit.jupiter.version}</version>
<version>${junit-jupiter.version}</version>
<scope>test</scope>
</dependency>
<dependency>
@ -88,7 +88,7 @@
<properties>
<kotlin.version>1.3.30</kotlin.version>
<junit.jupiter.version>5.4.2</junit.jupiter.version>
<junit-jupiter.version>5.4.2</junit-jupiter.version>
<mockito.version>2.27.0</mockito.version>
<byte-buddy.version>1.9.12</byte-buddy.version>
<assertj.version>3.10.0</assertj.version>

4
core-kotlin/pom.xml
View File

@ -39,7 +39,7 @@
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<version>${h2database.version}</version>
<version>${h2.version}</version>
</dependency>
<dependency>
<groupId>com.github.kittinunf.fuel</groupId>
@ -76,11 +76,9 @@
<properties>
<commons-math3.version>3.6.1</commons-math3.version>
<commons-lang3.version>3.8.1</commons-lang3.version>
<junit.platform.version>1.1.1</junit.platform.version>
<junit.vintage.version>5.2.0</junit.vintage.version>
<assertj.version>3.10.0</assertj.version>
<h2database.version>1.4.197</h2database.version>
<fuel.version>1.15.0</fuel.version>
<kovenant.version>3.3.0</kovenant.version>
<injekt-core.version>1.16.1</injekt-core.version>

1
couchbase/pom.xml
View File

@ -69,7 +69,6 @@
<properties>
<couchbase.client.version>2.5.0</couchbase.client.version>
<spring-framework.version>4.3.5.RELEASE</spring-framework.version>
<commons-lang3.version>3.5</commons-lang3.version>
</properties>
</project>

6
custom-pmd/pom.xml
View File

@ -7,6 +7,12 @@
<name>custom-pmd</name>
<packaging>jar</packaging>
<url>http://maven.apache.org</url>
<parent>
<artifactId>parent-modules</artifactId>
<groupId>com.baeldung</groupId>
<version>1.0.0-SNAPSHOT</version>
</parent>
<dependencies>
<dependency>

1
disruptor/pom.xml
View File

@ -115,7 +115,6 @@
<properties>
<!-- util -->
<commons-lang3.version>3.5</commons-lang3.version>
<disruptor.version>3.3.6</disruptor.version>
<!-- testing -->
<testng.version>6.10</testng.version>

1
dozer/pom.xml
View File

@ -26,7 +26,6 @@
</dependencies>
<properties>
<commons-lang3.version>3.5</commons-lang3.version>
<dozer.version>5.5.1</dozer.version>
</properties>

8
flyway-cdi-extension/pom.xml
View File

@ -8,6 +8,13 @@
<version>1.0-SNAPSHOT</version>
<name>flyway-cdi-extension</name>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-modules</artifactId>
<version>1.0.0-SNAPSHOT</version>
<relativePath>..</relativePath>
</parent>
<dependencies>
<dependency>
<groupId>javax.enterprise</groupId>
@ -51,6 +58,5 @@
<flyway-core.version>5.1.4</flyway-core.version>
<tomcat-jdbc.version>8.5.33</tomcat-jdbc.version>
<javax.annotation-api.version>1.3.2</javax.annotation-api.version>
<h2.version>1.4.197</h2.version>
</properties>
</project>

1
gson/pom.xml
View File

@ -64,7 +64,6 @@
<!-- marshalling -->
<gson.version>2.8.0</gson.version>
<!-- util -->
<commons-lang3.version>3.5</commons-lang3.version>
<commons-collections4.version>4.1</commons-collections4.version>
<joda-time.version>2.9.6</joda-time.version>
</properties>

1
guava-collections/pom.xml
View File

@ -55,7 +55,6 @@
<properties>
<!-- util -->
<guava.version>24.0-jre</guava.version>
<commons-lang3.version>3.5</commons-lang3.version>
<commons-collections4.version>4.1</commons-collections4.version>
<!-- testing -->

1
guava/pom.xml
View File

@ -49,7 +49,6 @@
<properties>
<!-- util -->
<guava.version>24.0-jre</guava.version>
<commons-lang3.version>3.5</commons-lang3.version>
<!-- testing -->
<assertj.version>3.6.1</assertj.version>

2
httpclient-simple/pom.xml
View File

@ -297,7 +297,6 @@
<properties>
<!-- util -->
<guava.version>19.0</guava.version>
<commons-lang3.version>3.5</commons-lang3.version>
<commons-codec.version>1.10</commons-codec.version>
<httpasyncclient.version>4.1.4</httpasyncclient.version>
<!-- testing -->
@ -305,7 +304,6 @@
<httpcore.version>4.4.11</httpcore.version>
<httpclient.version>4.5.8</httpclient.version> <!-- 4.3.6 --> <!-- 4.4-beta1 -->
<!-- maven plugins -->
<maven-war-plugin.version>2.6</maven-war-plugin.version>
<cargo-maven2-plugin.version>1.6.1</cargo-maven2-plugin.version>
</properties>

1
httpclient/pom.xml
View File

@ -120,7 +120,6 @@
<properties>
<!-- util -->
<guava.version>19.0</guava.version>
<commons-lang3.version>3.5</commons-lang3.version>
<commons-codec.version>1.10</commons-codec.version>
<httpasyncclient.version>4.1.4</httpasyncclient.version>
<!-- testing -->

1
hystrix/pom.xml
View File

@ -65,7 +65,6 @@
<hystrix-core.version>1.5.8</hystrix-core.version>
<rxjava-core.version>0.20.7</rxjava-core.version>
<!-- maven plugins -->
<maven-war-plugin.version>2.6</maven-war-plugin.version>
<maven-resources-plugin.version>2.7</maven-resources-plugin.version>
<hystrix-metrics-event-stream.version>1.5.8</hystrix-metrics-event-stream.version>
<hystrix-dashboard.version>1.5.8</hystrix-dashboard.version>

2
jackson-2/README.md
View File

@ -9,4 +9,4 @@ The "REST With Spring" Classes: http://bit.ly/restwithspring
- [Mapping Multiple JSON Fields to a Single Java Field](https://www.baeldung.com/json-multiple-fields-single-java-field)
- [How to Process YAML with Jackson](https://www.baeldung.com/jackson-yaml)
- [Working with Tree Model Nodes in Jackson](https://www.baeldung.com/jackson-json-node-tree-model)
- [Converting JSON to CSV in Java](https://www.baeldung.com/java-converting-json-to-csv)

6
jackson-2/pom.xml
View File

@ -26,21 +26,21 @@
<dependency>
<groupId>com.fasterxml.jackson.dataformat</groupId>
<artifactId>jackson-dataformat-yaml</artifactId>
<version>2.9.8</version>
<version>${jackson.version}</version>
</dependency>
<!-- CSV -->
<dependency>
<groupId>com.fasterxml.jackson.dataformat</groupId>
<artifactId>jackson-dataformat-csv</artifactId>
<version>2.9.8</version>
<version>${jackson.version}</version>
</dependency>
<!-- Allow use of LocalDate -->
<dependency>
<groupId>com.fasterxml.jackson.datatype</groupId>
<artifactId>jackson-datatype-jsr310</artifactId>
<version>2.9.8</version>
<version>${jackson.version}</version>
</dependency>

126
jackson-2/src/test/java/com/baeldung/jackson/json/compare/JsonCompareUnitTest.java Normal file
View File

@ -0,0 +1,126 @@
package com.baeldung.jackson.json.compare;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotEquals;
import static org.junit.Assert.assertTrue;
import java.io.IOException;
import java.util.Comparator;
import org.junit.Test;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.NumericNode;
import com.fasterxml.jackson.databind.node.TextNode;
public class JsonCompareUnitTest {
@Test
public void givenTwoSameJsonDataObjects_whenCompared_thenAreEqual() throws IOException {
ObjectMapper mapper = new ObjectMapper();
String s1 = "{\"employee\": {\"id\": \"1212\",\"fullName\": \"John Miles\", \"age\": 34 }}";
String s2 = "{\"employee\": {\"id\": \"1212\",\"age\": 34, \"fullName\": \"John Miles\" }}";
JsonNode actualObj1 = mapper.readTree(s1);
JsonNode actualObj2 = mapper.readTree(s2);
assertEquals(actualObj1, actualObj2);
}
@Test
public void givenTwoSameNestedJsonDataObjects_whenCompared_thenEqual() throws IOException {
ObjectMapper mapper = new ObjectMapper();
String s1 = "{\"employee\": {\"id\": \"1212\",\"fullName\": \"John Miles\",\"age\": 34, \"contact\":{\"email\": \"john@xyz.com\",\"phone\": \"9999999999\"} }}";
String s2 = "{\"employee\": {\"id\": \"1212\",\"fullName\": \"John Miles\",\"age\": 34, \"contact\":{\"email\": \"john@xyz.com\",\"phone\": \"9999999999\"} }}";
JsonNode actualObj1 = mapper.readTree(s1);
JsonNode actualObj2 = mapper.readTree(s2);
assertEquals(actualObj1, actualObj2);
}
@Test
public void givenTwoSameListJsonDataObjects_whenCompared_thenEqual() throws IOException {
ObjectMapper mapper = new ObjectMapper();
String s1 = "{\"employee\": {\"id\": \"1212\",\"fullName\": \"John Miles\",\"age\": 34, \"skills\":[\"Java\", \"C++\", \"Python\"] }}";
String s2 = "{\"employee\": {\"id\": \"1212\",\"fullName\": \"John Miles\",\"age\": 34, \"skills\":[\"Java\", \"C++\", \"Python\"] }}";
JsonNode actualObj1 = mapper.readTree(s1);
JsonNode actualObj2 = mapper.readTree(s2);
assertEquals(actualObj1, actualObj2);
}
@Test
public void givenTwoJsonDataObjects_whenComparedUsingCustomNumericNodeComparator_thenEqual() throws IOException {
ObjectMapper mapper = new ObjectMapper();
String s1 = "{\"name\": \"John\",\"score\":5.0}";
String s2 = "{\"name\": \"John\",\"score\":5}";
JsonNode actualObj1 = mapper.readTree(s1);
JsonNode actualObj2 = mapper.readTree(s2);
NumericNodeComparator cmp = new NumericNodeComparator();
assertNotEquals(actualObj1, actualObj2);
assertTrue(actualObj1.equals(cmp, actualObj2));
}
public class NumericNodeComparator implements Comparator<JsonNode> {
@Override
public int compare(JsonNode o1, JsonNode o2) {
if (o1.equals(o2)) {
return 0;
}
if ((o1 instanceof NumericNode) && (o2 instanceof NumericNode)) {
Double d1 = ((NumericNode) o1).asDouble();
Double d2 = ((NumericNode) o2).asDouble();
if (d1.compareTo(d2) == 0) {
return 0;
}
}
return 1;
}
}
@Test
public void givenTwoJsonDataObjects_whenComparedUsingCustomTextNodeComparator_thenEqual() throws IOException {
ObjectMapper mapper = new ObjectMapper();
String s1 = "{\"name\": \"JOHN\",\"score\":5}";
String s2 = "{\"name\": \"John\",\"score\":5}";
JsonNode actualObj1 = mapper.readTree(s1);
JsonNode actualObj2 = mapper.readTree(s2);
TextNodeComparator cmp = new TextNodeComparator();
assertNotEquals(actualObj1, actualObj2);
assertTrue(actualObj1.equals(cmp, actualObj2));
}
public class TextNodeComparator implements Comparator<JsonNode> {
@Override
public int compare(JsonNode o1, JsonNode o2) {
if (o1.equals(o2)) {
return 0;
}
if ((o1 instanceof TextNode) && (o2 instanceof TextNode)) {
String s1 = ((TextNode) o1).asText();
String s2 = ((TextNode) o2).asText();
if (s1.equalsIgnoreCase(s2)) {
return 0;
}
}
return 1;
}
}
}

1
jackson-simple/pom.xml
View File

@ -118,7 +118,6 @@
<properties>
<!-- util -->
<commons-lang3.version>3.8</commons-lang3.version>
<joda-time.version>2.10</joda-time.version>
<gson.version>2.8.5</gson.version>
<commons-collections4.version>4.2</commons-collections4.version>

1
jackson/pom.xml
View File

@ -118,7 +118,6 @@
<properties>
<!-- util -->
<commons-lang3.version>3.8</commons-lang3.version>
<joda-time.version>2.10</joda-time.version>
<gson.version>2.8.5</gson.version>
<commons-collections4.version>4.2</commons-collections4.version>

5
java-collections-conversions/README.md
View File

@ -10,4 +10,7 @@
- [Converting a List to String in Java](http://www.baeldung.com/java-list-to-string)
- [How to Convert List to Map in Java](http://www.baeldung.com/java-list-to-map)
- [Array to String Conversions](https://www.baeldung.com/java-array-to-string)
- [Converting a Collection to ArrayList in Java](https://www.baeldung.com/java-convert-collection-arraylist)
- [Converting a Collection to ArrayList in Java](https://www.baeldung.com/java-convert-collection-arraylist)
- [Java 8 Collectors toMap](https://www.baeldung.com/java-collectors-tomap)
- [Converting Iterable to Collection in Java](https://www.baeldung.com/java-iterable-to-collection)
- [Converting Iterator to List](https://www.baeldung.com/java-convert-iterator-to-list)

1
java-collections-conversions/pom.xml
View File

@ -33,7 +33,6 @@
</dependencies>
<properties>
<commons-lang3.version>3.5</commons-lang3.version>
<commons-collections4.version>4.1</commons-collections4.version>
<assertj.version>3.6.1</assertj.version>
</properties>

2
java-collections-conversions/src/test/java/org/baeldung/java/collections/IterableToCollectionUnitTest.java → java-collections-conversions/src/test/java/com/baeldung/java/collections/IterableToCollectionUnitTest.java
View File

@ -1,4 +1,4 @@
package org.baeldung.java.collections;
package com.baeldung.java.collections;
import static org.hamcrest.Matchers.contains;
import static org.junit.Assert.assertThat;

1
java-collections-maps-2/pom.xml
View File

@ -54,7 +54,6 @@
<trove4j.version>3.0.2</trove4j.version>
<fastutil.version>8.1.0</fastutil.version>
<colt.version>1.2.0</colt.version>
<commons-lang3.version>3.8.1</commons-lang3.version>
<assertj.version>3.11.1</assertj.version>
</properties>

1
java-collections-maps/pom.xml
View File

@ -44,7 +44,6 @@
</dependencies>
<properties>
<commons-lang3.version>3.5</commons-lang3.version>
<commons-collections4.version>4.1</commons-collections4.version>
<collections-generic.version>4.01</collections-generic.version>
<avaitility.version>1.7.0</avaitility.version>

3
java-dates-2/pom.xml
View File

@ -25,7 +25,7 @@
<dependency>
<groupId>commons-validator</groupId>
<artifactId>commons-validator</artifactId>
<version>1.6</version>
<version>${commons-validator.version}</version>
</dependency>
<!-- test scoped -->
@ -63,6 +63,7 @@
<!-- testing -->
<assertj.version>3.6.1</assertj.version>
<joda-time.version>2.10</joda-time.version>
<commons-validator.version>1.6</commons-validator.version>
<maven.compiler.source>1.9</maven.compiler.source>
<maven.compiler.target>1.9</maven.compiler.target>
</properties>

2
java-dates/pom.xml
View File

@ -74,8 +74,6 @@
</build>
<properties>
<!-- util -->
<commons-lang3.version>3.5</commons-lang3.version>
<joda-time.version>2.10</joda-time.version>
<!-- testing -->
<assertj.version>3.6.1</assertj.version>

2
java-ee-8-security-api/pom.xml
View File

@ -72,8 +72,6 @@
<javaee-version>8.0</javaee-version>
<liberty-maven-plugin.version>2.3</liberty-maven-plugin.version>
<openliberty-runtime.version>18.0.0.1</openliberty-runtime.version>
<maven-war-plugin.version>3.2.2</maven-war-plugin.version>
</properties>
</project>

3
java-math/pom.xml
View File

@ -42,7 +42,7 @@
<dependency>
<groupId>com.github.dpaukov</groupId>
<artifactId>combinatoricslib3</artifactId>
<version>3.3.0</version>
<version>${combinatoricslib3.version}</version>
</dependency>
</dependencies>
@ -63,6 +63,7 @@
<org.assertj.core.version>3.9.0</org.assertj.core.version>
<commons-codec.version>1.11</commons-codec.version>
<guava.version>27.0.1-jre</guava.version>
<combinatoricslib3.version>3.3.0</combinatoricslib3.version>
</properties>
</project>

26
java-numbers-2/.gitignore vendored Normal file
View File

@ -0,0 +1,26 @@
*.class
0.*
#folders#
/target
/neoDb*
/data
/src/main/webapp/WEB-INF/classes
*/META-INF/*
.resourceCache
# Packaged files #
*.jar
*.war
*.ear
# Files generated by integration tests
*.txt
backup-pom.xml
/bin/
/temp
#IntelliJ specific
.idea/
*.iml

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