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Merge remote-tracking branch 'eugenp/master'

This commit is contained in:
DOHA 2018-08-22 14:26:09 +03:00
parent 08d4356d5b 9e28500a20
commit 3f1518b151
313 changed files with 3632 additions and 1083 deletions
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42
apache-avro/src/main/java/com/baeldung/avro/util/serealization/AvroDeSerealizer.java
View File

@ -5,29 +5,37 @@ import org.apache.avro.io.DatumReader;
import org.apache.avro.io.Decoder;
import org.apache.avro.io.DecoderFactory;
import org.apache.avro.specific.SpecificDatumReader;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
public class AvroDeSerealizer {
public AvroHttpRequest deSerealizeAvroHttpRequestJSON(byte[] data){
DatumReader<AvroHttpRequest> reader = new SpecificDatumReader<>(AvroHttpRequest.class);
Decoder decoder = null;
try {
decoder = DecoderFactory.get().jsonDecoder(AvroHttpRequest.getClassSchema(), new String(data));
return reader.read(null, decoder);
} catch (IOException e) {
return null;
}
}
private static Logger logger = LoggerFactory.getLogger(AvroDeSerealizer.class);
public AvroHttpRequest deSerealizeAvroHttpRequestBinary(byte[] data){
DatumReader<AvroHttpRequest> employeeReader = new SpecificDatumReader<>(AvroHttpRequest.class);
Decoder decoder = DecoderFactory.get().binaryDecoder(data, null);
try {
return employeeReader.read(null, decoder);
} catch (IOException e) {
public AvroHttpRequest deSerealizeAvroHttpRequestJSON(byte[] data) {
DatumReader<AvroHttpRequest> reader = new SpecificDatumReader<>(AvroHttpRequest.class);
Decoder decoder = null;
try {
decoder = DecoderFactory.get()
.jsonDecoder(AvroHttpRequest.getClassSchema(), new String(data));
return reader.read(null, decoder);
} catch (IOException e) {
logger.error("Deserialization error" + e.getMessage());
}
return null;
}
public AvroHttpRequest deSerealizeAvroHttpRequestBinary(byte[] data) {
DatumReader<AvroHttpRequest> employeeReader = new SpecificDatumReader<>(AvroHttpRequest.class);
Decoder decoder = DecoderFactory.get()
.binaryDecoder(data, null);
try {
return employeeReader.read(null, decoder);
} catch (IOException e) {
logger.error("Deserialization error" + e.getMessage());
}
return null;
}
}
}

62
apache-avro/src/main/java/com/baeldung/avro/util/serealization/AvroSerealizer.java
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@ -3,42 +3,48 @@ package com.baeldung.avro.util.serealization;
import com.baeldung.avro.util.model.AvroHttpRequest;
import org.apache.avro.io.*;
import org.apache.avro.specific.SpecificDatumWriter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
public class AvroSerealizer {
public byte[] serealizeAvroHttpRequestJSON(AvroHttpRequest request){
DatumWriter<AvroHttpRequest> writer = new SpecificDatumWriter<>(AvroHttpRequest.class);
byte[] data = new byte[0];
ByteArrayOutputStream stream = new ByteArrayOutputStream();
Encoder jsonEncoder = null;
try {
jsonEncoder = EncoderFactory.get().jsonEncoder(AvroHttpRequest.getClassSchema(), stream);
writer.write(request, jsonEncoder);
jsonEncoder.flush();
data = stream.toByteArray();
} catch (IOException e) {
data =null;
}
return data;
}
private static final Logger logger = LoggerFactory.getLogger(AvroSerealizer.class);
public byte[] serealizeAvroHttpRequestBinary(AvroHttpRequest request){
DatumWriter<AvroHttpRequest> writer = new SpecificDatumWriter<>(AvroHttpRequest.class);
byte[] data = new byte[0];
ByteArrayOutputStream stream = new ByteArrayOutputStream();
Encoder jsonEncoder = EncoderFactory.get().binaryEncoder(stream,null);
try {
writer.write(request, jsonEncoder);
jsonEncoder.flush();
data = stream.toByteArray();
} catch (IOException e) {
data = null;
public byte[] serealizeAvroHttpRequestJSON(AvroHttpRequest request) {
DatumWriter<AvroHttpRequest> writer = new SpecificDatumWriter<>(AvroHttpRequest.class);
byte[] data = new byte[0];
ByteArrayOutputStream stream = new ByteArrayOutputStream();
Encoder jsonEncoder = null;
try {
jsonEncoder = EncoderFactory.get()
.jsonEncoder(AvroHttpRequest.getClassSchema(), stream);
writer.write(request, jsonEncoder);
jsonEncoder.flush();
data = stream.toByteArray();
} catch (IOException e) {
logger.error("Serialization error " + e.getMessage());
}
return data;
}
return data;
}
public byte[] serealizeAvroHttpRequestBinary(AvroHttpRequest request) {
DatumWriter<AvroHttpRequest> writer = new SpecificDatumWriter<>(AvroHttpRequest.class);
byte[] data = new byte[0];
ByteArrayOutputStream stream = new ByteArrayOutputStream();
Encoder jsonEncoder = EncoderFactory.get()
.binaryEncoder(stream, null);
try {
writer.write(request, jsonEncoder);
jsonEncoder.flush();
data = stream.toByteArray();
} catch (IOException e) {
logger.error("Serialization error " + e.getMessage());
}
return data;
}
}

76
apache-avro/src/test/java/com/baeldung/avro/util/serealization/AvroSerealizerDeSerealizerTest.java
View File

@ -24,8 +24,10 @@ public class AvroSerealizerDeSerealizerTest {
serealizer = new AvroSerealizer();
deSerealizer = new AvroDeSerealizer();
ClientIdentifier clientIdentifier = ClientIdentifier.newBuilder().
setHostName("localhost").setIpAddress("255.255.255.0").build();
ClientIdentifier clientIdentifier = ClientIdentifier.newBuilder()
.setHostName("localhost")
.setIpAddress("255.255.255.0")
.build();
List<CharSequence> employees = new ArrayList();
employees.add("James");
@ -33,43 +35,49 @@ public class AvroSerealizerDeSerealizerTest {
employees.add("David");
employees.add("Han");
request = AvroHttpRequest.newBuilder().setRequestTime(01l)
.setActive(Active.YES).setClientIdentifier(clientIdentifier)
.setEmployeeNames(employees).build();
request = AvroHttpRequest.newBuilder()
.setRequestTime(01l)
.setActive(Active.YES)
.setClientIdentifier(clientIdentifier)
.setEmployeeNames(employees)
.build();
}
@After
public void tearDown() throws Exception {
}
@Test
public void WhenSerialized_UsingJSONEncoder_ObjectGetsSerialized(){
byte[] data = serealizer.serealizeAvroHttpRequestJSON(request);
assertTrue(Objects.nonNull(data));
assertTrue(data.length > 0);
}
@Test
public void WhenSerialized_UsingBinaryEncoder_ObjectGetsSerialized(){
byte[] data = serealizer.serealizeAvroHttpRequestBinary(request);
assertTrue(Objects.nonNull(data));
assertTrue(data.length > 0);
}
@Test
public void WhenDeserialize_UsingJSONDecoder_ActualAndExpectedObjectsAreEqual(){
byte[] data = serealizer.serealizeAvroHttpRequestJSON(request);
AvroHttpRequest actualRequest = deSerealizer.deSerealizeAvroHttpRequestJSON(data);
assertEquals(actualRequest,request);
assertTrue(actualRequest.getRequestTime().equals(request.getRequestTime()));
}
@Test
public void WhenDeserialize_UsingBinaryecoder_ActualAndExpectedObjectsAreEqual(){
byte[] data = serealizer.serealizeAvroHttpRequestBinary(request);
AvroHttpRequest actualRequest = deSerealizer.deSerealizeAvroHttpRequestBinary(data);
assertEquals(actualRequest,request);
assertTrue(actualRequest.getRequestTime().equals(request.getRequestTime()));
}
@Test
public void WhenSerializedUsingJSONEncoder_thenObjectGetsSerialized() {
byte[] data = serealizer.serealizeAvroHttpRequestJSON(request);
assertTrue(Objects.nonNull(data));
assertTrue(data.length > 0);
}
@Test
public void WhenSerializedUsingBinaryEncoder_thenObjectGetsSerialized() {
byte[] data = serealizer.serealizeAvroHttpRequestBinary(request);
assertTrue(Objects.nonNull(data));
assertTrue(data.length > 0);
}
@Test
public void WhenDeserializeUsingJSONDecoder_thenActualAndExpectedObjectsAreEqual() {
byte[] data = serealizer.serealizeAvroHttpRequestJSON(request);
AvroHttpRequest actualRequest = deSerealizer.deSerealizeAvroHttpRequestJSON(data);
assertEquals(actualRequest, request);
assertTrue(actualRequest.getRequestTime()
.equals(request.getRequestTime()));
}
@Test
public void WhenDeserializeUsingBinaryecoder_thenActualAndExpectedObjectsAreEqual() {
byte[] data = serealizer.serealizeAvroHttpRequestBinary(request);
AvroHttpRequest actualRequest = deSerealizer.deSerealizeAvroHttpRequestBinary(data);
assertEquals(actualRequest, request);
assertTrue(actualRequest.getRequestTime()
.equals(request.getRequestTime()));
}
}

2
apache-fop/src/main/resources/logback.xml
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@ -2,7 +2,7 @@
<configuration>
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>web - %date [%thread] %-5level %logger{36} - %message%n
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
</pattern>
</encoder>
</appender>

2
apache-thrift/pom.xml
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@ -39,6 +39,7 @@
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>build-helper-maven-plugin</artifactId>
<version>${build-helper-maven-plugin.version}</version>
<executions>
<execution>
<phase>generate-sources</phase>
@ -60,6 +61,7 @@
<thrift.version>0.10.0</thrift.version>
<maven-thrift.version>0.1.11</maven-thrift.version>
<org.slf4j.slf4j-simple.version>1.7.12</org.slf4j.slf4j-simple.version>
<build-helper-maven-plugin.version>3.0.0</build-helper-maven-plugin.version>
</properties>
</project>

2
apache-velocity/src/main/resources/logback.xml
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@ -2,7 +2,7 @@
<configuration>
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>web - %date [%thread] %-5level %logger{36} - %message%n
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
</pattern>
</encoder>
</appender>

4
core-java-8/README.md
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@ -14,7 +14,6 @@
- [Guide to Java 8 groupingBy Collector](http://www.baeldung.com/java-groupingby-collector)
- [Strategy Design Pattern in Java 8](http://www.baeldung.com/java-strategy-pattern)
- [Java 8 and Infinite Streams](http://www.baeldung.com/java-inifinite-streams)
- [String Operations with Java Streams](http://www.baeldung.com/java-stream-operations-on-strings)
- [Exceptions in Java 8 Lambda Expressions](http://www.baeldung.com/java-lambda-exceptions)
- [Java 8 Stream findFirst() vs. findAny()](http://www.baeldung.com/java-stream-findfirst-vs-findany)
- [Guide to Java 8 Comparator.comparing()](http://www.baeldung.com/java-8-comparator-comparing)
@ -34,13 +33,11 @@
- [Copy a File with Java](http://www.baeldung.com/java-copy-file)
- [Static and Default Methods in Interfaces in Java](http://www.baeldung.com/java-static-default-methods)
- [Iterable to Stream in Java](http://www.baeldung.com/java-iterable-to-stream)
- [Converting String to Stream of chars](http://www.baeldung.com/java-string-to-stream)
- [How to Iterate Over a Stream With Indices](http://www.baeldung.com/java-stream-indices)
- [Efficient Word Frequency Calculator in Java](http://www.baeldung.com/java-word-frequency)
- [Primitive Type Streams in Java 8](http://www.baeldung.com/java-8-primitive-streams)
- [Fail-Safe Iterator vs Fail-Fast Iterator](http://www.baeldung.com/java-fail-safe-vs-fail-fast-iterator)
- [Shuffling Collections In Java](http://www.baeldung.com/java-shuffle-collection)
- [Java 8 StringJoiner](http://www.baeldung.com/java-string-joiner)
- [Introduction to Spliterator in Java](http://www.baeldung.com/java-spliterator)
- [Java 8 Math New Methods](http://www.baeldung.com/java-8-math)
- [Overview of Java Built-in Annotations](http://www.baeldung.com/java-default-annotations)
@ -54,7 +51,6 @@
- [Java 8 Unsigned Arithmetic Support](http://www.baeldung.com/java-unsigned-arithmetic)
- [How to Get the Start and the End of a Day using Java](http://www.baeldung.com/java-day-start-end)
- [Generalized Target-Type Inference in Java](http://www.baeldung.com/java-generalized-target-type-inference)
- [Image to Base64 String Conversion](http://www.baeldung.com/java-base64-image-string)
- [Calculate Age in Java](http://www.baeldung.com/java-get-age)
- [Copy a List to Another List in Java](http://www.baeldung.com/java-copy-list-to-another)
- [Increment Date in Java](http://www.baeldung.com/java-increment-date)

5
core-java-8/pom.xml
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@ -151,6 +151,7 @@
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<version>${spring-boot-maven-plugin.version}</version>
<executions>
<execution>
<goals>
@ -184,6 +185,6 @@
<avaitility.version>1.7.0</avaitility.version>
<jmh-core.version>1.19</jmh-core.version>
<jmh-generator.version>1.19</jmh-generator.version>
<spring-boot-maven-plugin.version>2.0.4.RELEASE</spring-boot-maven-plugin.version>
</properties>
</project>
</project>

1
core-java-9/README.md
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@ -17,7 +17,6 @@
- [Java 9 Reactive Streams](http://www.baeldung.com/java-9-reactive-streams)
- [How to Get All Dates Between Two Dates?](http://www.baeldung.com/java-between-dates)
- [Java 9 java.util.Objects Additions](http://www.baeldung.com/java-9-objects-new)
- [Compact Strings in Java 9](http://www.baeldung.com/java-9-compact-string)
- [Convert Date to LocalDate or LocalDateTime and Back](http://www.baeldung.com/java-date-to-localdate-and-localdatetime)
- [Java 9 Variable Handles Demistyfied](http://www.baeldung.com/java-variable-handles)
- [Exploring the New HTTP Client in Java 9](http://www.baeldung.com/java-9-http-client)

24
core-java-9/src/main/java/com/baeldung/java9/rangedates/DatesCollectionIteration.java Normal file
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@ -0,0 +1,24 @@
package com.baeldung.java9.rangedates;
import java.util.Collection;
import java.util.Date;
public class DatesCollectionIteration {
public void iteratingRangeOfDatesJava7(Collection<Date> dates) {
for (Date date : dates) {
processDate(date);
}
}
public void iteratingRangeOfDatesJava8(Collection<Date> dates) {
dates.stream()
.forEach(this::processDate);
}
private void processDate(Date date) {
System.out.println(date);
}
}

43
core-java-9/src/main/java/com/baeldung/java9/rangedates/RangeDatesIteration.java Normal file
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@ -0,0 +1,43 @@
package com.baeldung.java9.rangedates;
import java.time.LocalDate;
import java.util.Calendar;
import java.util.Date;
public class RangeDatesIteration {
public void iterateBetweenDatesJava9(LocalDate startDate, LocalDate endDate) {
startDate.datesUntil(endDate)
.forEach(this::processDate);
}
public void iterateBetweenDatesJava8(LocalDate start, LocalDate end) {
for (LocalDate date = start; date.isBefore(end); date = date.plusDays(1)) {
processDate(date);
}
}
public void iterateBetweenDatesJava7(Date start, Date end) {
Date current = start;
while (current.before(end)) {
processDate(current);
Calendar calendar = Calendar.getInstance();
calendar.setTime(current);
calendar.add(Calendar.DATE, 1);
current = calendar.getTime();
}
}
private void processDate(LocalDate date) {
System.out.println(date);
}
private void processDate(Date date) {
System.out.println(date);
}
}

2
core-java-9/src/main/resources/logback.xml
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@ -2,7 +2,7 @@
<configuration>
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>web - %date [%thread] %-5level %logger{36} - %message%n
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
</pattern>
</encoder>
</appender>

61
core-java-9/src/test/java/com/baeldung/java9/rangedates/DatesCollectionIterationUnitTest.java Normal file
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@ -0,0 +1,61 @@
package com.baeldung.java9.rangedates;
import java.time.LocalDate;
import java.time.ZoneId;
import java.time.temporal.ChronoUnit;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Collection;
import java.util.Date;
import java.util.List;
import java.util.stream.Collectors;
import org.junit.Test;
public class DatesCollectionIterationUnitTest {
private Collection<LocalDate> localDates = LocalDate.now()
.datesUntil(LocalDate.now()
.plus(10L, ChronoUnit.DAYS))
.collect(Collectors.toList());
private Collection<Date> dates = localDates.stream()
.map(localDate -> Date.from(localDate.atStartOfDay(ZoneId.systemDefault())
.toInstant()))
.collect(Collectors.toList());
@Test
public void givenIteratingListOfDatesJava7_WhenStartTodayAndEnding10DaysAhead() {
DatesCollectionIteration iterateInColleciton = new DatesCollectionIteration();
Calendar today = Calendar.getInstance();
Calendar next10Ahead = (Calendar) today.clone();
next10Ahead.add(Calendar.DATE, 10);
iterateInColleciton.iteratingRangeOfDatesJava7(createRangeDates(today.getTime(), next10Ahead.getTime()));
}
@Test
public void givenIteratingListOfDatesJava8_WhenStartTodayAndEnd10DaysAhead() {
DatesCollectionIteration iterateInColleciton = new DatesCollectionIteration();
iterateInColleciton.iteratingRangeOfDatesJava8(dates);
}
private List<Date> createRangeDates(Date start, Date end) {
List<Date> dates = new ArrayList<>();
Date current = start;
while (current.before(end)) {
dates.add(current);
Calendar calendar = Calendar.getInstance();
calendar.setTime(current);
calendar.add(Calendar.DATE, 1);
current = calendar.getTime();
}
return dates;
}
}

48
core-java-9/src/test/java/com/baeldung/java9/rangedates/RangeDatesIterationUnitTest.java Normal file
View File

@ -0,0 +1,48 @@
package com.baeldung.java9.rangedates;
import java.time.LocalDate;
import java.time.temporal.ChronoUnit;
import java.util.Calendar;
import java.util.Date;
import org.junit.Test;
public class RangeDatesIterationUnitTest {
@Test
public void givenIterateBetweenDatesJava9_WhenStartDateAsTodayAndEndDateAs10DaysAhead() {
LocalDate start = LocalDate.now();
LocalDate end = start.plus(10L, ChronoUnit.DAYS);
RangeDatesIteration iteration = new RangeDatesIteration();
iteration.iterateBetweenDatesJava9(start, end);
}
@Test
public void givenIterateBetweenDatesJava8_WhenStartDateAsTodayAndEndDateAs10DaysAhead() {
LocalDate start = LocalDate.now();
LocalDate end = start.plus(10L, ChronoUnit.DAYS);
RangeDatesIteration iteration = new RangeDatesIteration();
iteration.iterateBetweenDatesJava8(start, end);
}
@Test
public void givenIterateBetweenDatesJava7_WhenStartDateAsTodayAndEndDateAs10DaysAhead() {
Calendar today = Calendar.getInstance();
Calendar calendar = Calendar.getInstance();
calendar.clear();
calendar.set(today.get(Calendar.YEAR), today.get(Calendar.MONTH), today.get(Calendar.DATE));
Date start = calendar.getTime();
calendar.add(Calendar.DATE, 10);
Date end = calendar.getTime();
RangeDatesIteration iteration = new RangeDatesIteration();
iteration.iterateBetweenDatesJava7(start, end);
}
}

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

@ -36,3 +36,4 @@
- [Remove the First Element from a List](http://www.baeldung.com/java-remove-first-element-from-list)
- [How to Convert List to Map in Java](http://www.baeldung.com/java-list-to-map)
- [Initializing HashSet at the Time of Construction](http://www.baeldung.com/java-initialize-hashset)
- [Removing the First Element of an Array](https://www.baeldung.com/java-array-remove-first-element)

11
core-java-collections/src/test/java/com/baeldung/list/removefirst/RemoveFirstElementUnitTest.java
View File

@ -4,6 +4,7 @@ import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.*;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.LinkedList;
import java.util.List;
@ -48,4 +49,14 @@ public class RemoveFirstElementUnitTest {
assertThat(linkedList, not(contains("cat")));
}
@Test
public void givenStringArray_whenRemovingFirstElement_thenArrayIsSmallerAndElementRemoved() {
String[] stringArray = {"foo", "bar", "baz"};
String[] modifiedArray = Arrays.copyOfRange(stringArray, 1, stringArray.length);
assertThat(modifiedArray.length, is(2));
assertThat(modifiedArray[0], is("bar"));
}
}

26
core-java-collections/src/test/java/org/baeldung/java/collections/CollectionsEmpty.java Normal file
View File

@ -0,0 +1,26 @@
package org.baeldung.java.collections;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.junit.Assert;
import org.junit.Test;
class CollectionsEmpty {
@Test
public void givenArrayList_whenAddingElement_addsNewElement() {
ArrayList<String> mutableList = new ArrayList<>();
mutableList.add("test");
Assert.assertEquals(mutableList.size(), 1);
Assert.assertEquals(mutableList.get(0), "test");
}
@Test(expected = UnsupportedOperationException.class)
public void givenCollectionsEmptyList_whenAddingElement_throwsUnsupportedOperationException() {
List<String> immutableList = Collections.emptyList();
immutableList.add("test");
}
}

26
core-java-concurrency-collections/.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

15
core-java-concurrency-collections/README.md Normal file
View File

@ -0,0 +1,15 @@
=========
## Core Java Concurrency Collections Examples
### Relevant Articles:
- [Guide to java.util.concurrent.BlockingQueue](http://www.baeldung.com/java-blocking-queue)
- [A Guide to ConcurrentMap](http://www.baeldung.com/java-concurrent-map)
- [Guide to PriorityBlockingQueue in Java](http://www.baeldung.com/java-priority-blocking-queue)
- [Avoiding the ConcurrentModificationException in Java](http://www.baeldung.com/java-concurrentmodificationexception)
- [Custom Thread Pools In Java 8 Parallel Streams](http://www.baeldung.com/java-8-parallel-streams-custom-threadpool)
- [Guide to DelayQueue](http://www.baeldung.com/java-delay-queue)
- [A Guide to Java SynchronousQueue](http://www.baeldung.com/java-synchronous-queue)
- [Guide to the Java TransferQueue](http://www.baeldung.com/java-transfer-queue)
- [Guide to the ConcurrentSkipListMap](http://www.baeldung.com/java-concurrent-skip-list-map)
- [Guide to CopyOnWriteArrayList](http://www.baeldung.com/java-copy-on-write-arraylist)

94
core-java-concurrency-collections/pom.xml Normal file
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@ -0,0 +1,94 @@
<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</groupId>
<artifactId>core-java-concurrency-collections</artifactId>
<version>0.1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<name>core-java-concurrency-collections</name>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-java</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../parent-java</relativePath>
</parent>
<dependencies>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-collections4</artifactId>
<version>${commons-collections4.version}</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>${commons-io.version}</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>${commons-lang3.version}</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-math3</artifactId>
<version>${commons-math3.version}</version>
</dependency>
<dependency>
<groupId>org.assertj</groupId>
<artifactId>assertj-core</artifactId>
<version>${assertj.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.jayway.awaitility</groupId>
<artifactId>awaitility</artifactId>
<version>${avaitility.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<finalName>core-java-concurrency-collections</finalName>
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
</resource>
</resources>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<executions>
<execution>
<id>copy-dependencies</id>
<phase>prepare-package</phase>
<goals>
<goal>copy-dependencies</goal>
</goals>
<configuration>
<outputDirectory>${project.build.directory}/libs</outputDirectory>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
<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>
<!-- testing -->
<assertj.version>3.6.1</assertj.version>
<avaitility.version>1.7.0</avaitility.version>
</properties>
</project>

0
core-java-concurrency/src/main/java/com/baeldung/concurrent/blockingqueue/BlockingQueueUsage.java → core-java-concurrency-collections/src/main/java/com/baeldung/concurrent/blockingqueue/BlockingQueueUsage.java
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0
core-java-concurrency/src/main/java/com/baeldung/concurrent/blockingqueue/NumbersConsumer.java → core-java-concurrency-collections/src/main/java/com/baeldung/concurrent/blockingqueue/NumbersConsumer.java
View File

0
core-java-concurrency/src/main/java/com/baeldung/concurrent/blockingqueue/NumbersProducer.java → core-java-concurrency-collections/src/main/java/com/baeldung/concurrent/blockingqueue/NumbersProducer.java
View File

0
core-java-concurrency/src/main/java/com/baeldung/concurrent/delayqueue/DelayObject.java → core-java-concurrency-collections/src/main/java/com/baeldung/concurrent/delayqueue/DelayObject.java
View File

0
core-java-concurrency/src/main/java/com/baeldung/concurrent/delayqueue/DelayQueueConsumer.java → core-java-concurrency-collections/src/main/java/com/baeldung/concurrent/delayqueue/DelayQueueConsumer.java
View File

0
core-java-concurrency/src/main/java/com/baeldung/concurrent/delayqueue/DelayQueueProducer.java → core-java-concurrency-collections/src/main/java/com/baeldung/concurrent/delayqueue/DelayQueueProducer.java
View File

0
core-java-concurrency/src/main/java/com/baeldung/concurrent/skiplist/Event.java → core-java-concurrency-collections/src/main/java/com/baeldung/concurrent/skiplist/Event.java
View File

0
core-java-concurrency/src/main/java/com/baeldung/concurrent/skiplist/EventWindowSort.java → core-java-concurrency-collections/src/main/java/com/baeldung/concurrent/skiplist/EventWindowSort.java
View File

0
core-java-concurrency/src/main/java/com/baeldung/transferqueue/Consumer.java → core-java-concurrency-collections/src/main/java/com/baeldung/transferqueue/Consumer.java
View File

0
core-java-concurrency/src/main/java/com/baeldung/transferqueue/Producer.java → core-java-concurrency-collections/src/main/java/com/baeldung/transferqueue/Producer.java
View File

19
core-java-concurrency-collections/src/main/resources/logback.xml Normal file
View File

@ -0,0 +1,19 @@
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>web - %date [%thread] %-5level %logger{36} - %message%n
</pattern>
</encoder>
</appender>
<logger name="org.springframework" level="WARN" />
<logger name="org.springframework.transaction" level="WARN" />
<!-- in order to debug some marshalling issues, this needs to be TRACE -->
<logger name="org.springframework.web.servlet.mvc" level="WARN" />
<root level="INFO">
<appender-ref ref="STDOUT" />
</root>
</configuration>

0
core-java-concurrency/src/test/java/com/baeldung/concurrent/copyonwrite/CopyOnWriteArrayListUnitTest.java → core-java-concurrency-collections/src/test/java/com/baeldung/concurrent/copyonwrite/CopyOnWriteArrayListUnitTest.java
View File

0
core-java-concurrency/src/test/java/com/baeldung/concurrent/delayqueue/DelayQueueIntegrationTest.java → core-java-concurrency-collections/src/test/java/com/baeldung/concurrent/delayqueue/DelayQueueIntegrationTest.java
View File

0
core-java-concurrency/src/test/java/com/baeldung/concurrent/priorityblockingqueue/PriorityBlockingQueueIntegrationTest.java → core-java-concurrency-collections/src/test/java/com/baeldung/concurrent/priorityblockingqueue/PriorityBlockingQueueIntegrationTest.java
View File

0
core-java-concurrency/src/test/java/com/baeldung/concurrent/skiplist/ConcurrentSkipListSetIntegrationTest.java → core-java-concurrency-collections/src/test/java/com/baeldung/concurrent/skiplist/ConcurrentSkipListSetIntegrationTest.java
View File

0
core-java-concurrency/src/test/java/com/baeldung/java/concurrentmap/ConcurrentMapAggregateStatusManualTest.java → core-java-concurrency-collections/src/test/java/com/baeldung/java/concurrentmap/ConcurrentMapAggregateStatusManualTest.java
View File

0
core-java-concurrency/src/test/java/com/baeldung/java/concurrentmap/ConcurrentMapNullKeyValueManualTest.java → core-java-concurrency-collections/src/test/java/com/baeldung/java/concurrentmap/ConcurrentMapNullKeyValueManualTest.java
View File

0
core-java-concurrency/src/test/java/com/baeldung/java/concurrentmap/ConcurrentMapPerformanceManualTest.java → core-java-concurrency-collections/src/test/java/com/baeldung/java/concurrentmap/ConcurrentMapPerformanceManualTest.java
View File

0
core-java-concurrency/src/test/java/com/baeldung/java/concurrentmap/ConcurrentNavigableMapManualTest.java → core-java-concurrency-collections/src/test/java/com/baeldung/java/concurrentmap/ConcurrentNavigableMapManualTest.java
View File

0
core-java-concurrency/src/test/java/com/baeldung/java/concurrentmap/ConcurretMapMemoryConsistencyManualTest.java → core-java-concurrency-collections/src/test/java/com/baeldung/java/concurrentmap/ConcurretMapMemoryConsistencyManualTest.java
View File

0
core-java-concurrency/src/test/java/com/baeldung/java/concurrentmodification/ConcurrentModificationUnitTest.java → core-java-concurrency-collections/src/test/java/com/baeldung/java/concurrentmodification/ConcurrentModificationUnitTest.java
View File

0
core-java-concurrency/src/test/java/com/baeldung/synchronousqueue/SynchronousQueueIntegrationTest.java → core-java-concurrency-collections/src/test/java/com/baeldung/synchronousqueue/SynchronousQueueIntegrationTest.java
View File

0
core-java-concurrency/src/test/java/com/baeldung/transferqueue/TransferQueueIntegrationTest.java → core-java-concurrency-collections/src/test/java/com/baeldung/transferqueue/TransferQueueIntegrationTest.java
View File

0
core-java-concurrency/src/test/java/org/baeldung/java/streams/ThreadPoolInParallelStreamIntegrationTest.java → core-java-concurrency-collections/src/test/java/org/baeldung/java/streams/ThreadPoolInParallelStreamIntegrationTest.java
View File

13
core-java-concurrency-collections/src/test/resources/.gitignore vendored Normal file
View File

@ -0,0 +1,13 @@
*.class
#folders#
/target
/neoDb*
/data
/src/main/webapp/WEB-INF/classes
*/META-INF/*
# Packaged files #
*.jar
*.war
*.ear

10
core-java-concurrency/README.md
View File

@ -7,22 +7,12 @@
- [A Guide to the Java ExecutorService](http://www.baeldung.com/java-executor-service-tutorial)
- [Introduction to Thread Pools in Java](http://www.baeldung.com/thread-pool-java-and-guava)
- [Guide to java.util.concurrent.Future](http://www.baeldung.com/java-future)
- [Guide to java.util.concurrent.BlockingQueue](http://www.baeldung.com/java-blocking-queue)
- [Guide to CountDownLatch in Java](http://www.baeldung.com/java-countdown-latch)
- [A Guide to ConcurrentMap](http://www.baeldung.com/java-concurrent-map)
- [Guide to PriorityBlockingQueue in Java](http://www.baeldung.com/java-priority-blocking-queue)
- [Avoiding the ConcurrentModificationException in Java](http://www.baeldung.com/java-concurrentmodificationexception)
- [Custom Thread Pools In Java 8 Parallel Streams](http://www.baeldung.com/java-8-parallel-streams-custom-threadpool)
- [Guide to java.util.concurrent.Locks](http://www.baeldung.com/java-concurrent-locks)
- [An Introduction to ThreadLocal in Java](http://www.baeldung.com/java-threadlocal)
- [Guide to DelayQueue](http://www.baeldung.com/java-delay-queue)
- [A Guide to Java SynchronousQueue](http://www.baeldung.com/java-synchronous-queue)
- [Guide to the Java TransferQueue](http://www.baeldung.com/java-transfer-queue)
- [Guide to the ConcurrentSkipListMap](http://www.baeldung.com/java-concurrent-skip-list-map)
- [Difference Between Wait and Sleep in Java](http://www.baeldung.com/java-wait-and-sleep)
- [LongAdder and LongAccumulator in Java](http://www.baeldung.com/java-longadder-and-longaccumulator)
- [The Dining Philosophers Problem in Java](http://www.baeldung.com/java-dining-philoshophers)
- [Guide to CopyOnWriteArrayList](http://www.baeldung.com/java-copy-on-write-arraylist)
- [Guide to the Java Phaser](http://www.baeldung.com/java-phaser)
- [Guide to Synchronized Keyword in Java](http://www.baeldung.com/java-synchronized)
- [An Introduction to Atomic Variables in Java](http://www.baeldung.com/java-atomic-variables)

2
core-java-concurrency/src/main/resources/logback.xml
View File

@ -2,7 +2,7 @@
<configuration>
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>web - %date [%thread] %-5level %logger{36} - %message%n
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
</pattern>
</encoder>
</appender>

2
core-java-io/pom.xml
View File

@ -183,6 +183,7 @@
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<version>${spring-boot-maven-plugin.version}</version>
<executions>
<execution>
<goals>
@ -316,6 +317,7 @@
<esapi.version>2.1.0.1</esapi.version>
<jmh-generator-annprocess.version>1.19</jmh-generator-annprocess.version>
<async-http-client.version>2.4.5</async-http-client.version>
<spring-boot-maven-plugin.version>2.0.4.RELEASE</spring-boot-maven-plugin.version>
</properties>
</project>

2
core-java-io/src/main/resources/logback.xml
View File

@ -2,7 +2,7 @@
<configuration>
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>web - %date [%thread] %-5level %logger{36} - %message%n
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
</pattern>
</encoder>
</appender>

8
core-java-persistence/README.md Normal file
View File

@ -0,0 +1,8 @@
=========
## Core Java Persistence Examples
### Relevant Articles:
- [Introduction to JDBC](http://www.baeldung.com/java-jdbc)
- [Batch Processing in JDBC](http://www.baeldung.com/jdbc-batch-processing)
- [Introduction to the JDBC RowSet Interface in Java](http://www.baeldung.com/java-jdbc-rowset)

2
core-java-sun/src/main/resources/logback.xml
View File

@ -2,7 +2,7 @@
<configuration>
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>web - %date [%thread] %-5level %logger{36} - %message%n
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
</pattern>
</encoder>
</appender>

23
core-java/README.md
View File

@ -3,18 +3,14 @@
## Core Java Cookbooks and Examples
### Relevant Articles:
- [Java – Generate Random String](http://www.baeldung.com/java-random-string)
- [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)
- [Guide to Java Reflection](http://www.baeldung.com/java-reflection)
- [A Guide to Java Sockets](http://www.baeldung.com/a-guide-to-java-sockets)
- [Convert char to String in Java](http://www.baeldung.com/java-convert-char-to-string)
- [Convert String to int or Integer in Java](http://www.baeldung.com/java-convert-string-to-int-or-integer)
- [Java – Try with Resources](http://www.baeldung.com/java-try-with-resources)
- [Guide to the Fork/Join Framework in Java](http://www.baeldung.com/java-fork-join)
- [How to Print Screen in Java](http://www.baeldung.com/print-screen-in-java)
- [How to Convert String to different data types in Java](http://www.baeldung.com/java-string-conversions)
- [Introduction to Java Generics](http://www.baeldung.com/java-generics)
- [Generate equals() and hashCode() with Eclipse](http://www.baeldung.com/java-eclipse-equals-and-hashcode)
- [A Guide To Java Regular Expressions API](http://www.baeldung.com/regular-expressions-java)
@ -37,8 +33,6 @@
- [A Quick JUnit vs TestNG Comparison](http://www.baeldung.com/junit-vs-testng)
- [Java Primitive Conversions](http://www.baeldung.com/java-primitive-conversions)
- [Java Money and the Currency API](http://www.baeldung.com/java-money-and-currency)
- [Converting Strings to Enums in Java](http://www.baeldung.com/java-string-to-enum)
- [Quick Guide to the Java StringTokenizer](http://www.baeldung.com/java-stringtokenizer)
- [JVM Log Forging](http://www.baeldung.com/jvm-log-forging)
- [Guide to sun.misc.Unsafe](http://www.baeldung.com/java-unsafe)
- [How to Perform a Simple HTTP Request in Java](http://www.baeldung.com/java-http-request)
@ -53,36 +47,28 @@
- [How to Get a Name of a Method Being Executed?](http://www.baeldung.com/java-name-of-executing-method)
- [Dynamic Proxies in Java](http://www.baeldung.com/java-dynamic-proxies)
- [How to Copy an Array in Java](http://www.baeldung.com/java-array-copy)
- [Introduction to JDBC](http://www.baeldung.com/java-jdbc)
- [Period and Duration in Java](http://www.baeldung.com/java-period-duration)
- [Converting a Stack Trace to a String in Java](http://www.baeldung.com/java-stacktrace-to-string)
- [Count Occurrences of a Char in a String](http://www.baeldung.com/java-count-chars)
- [Java Double Brace Initialization](http://www.baeldung.com/java-double-brace-initialization)
- [The StackOverflowError in Java](http://www.baeldung.com/java-stack-overflow-error)
- [Split a String in Java](http://www.baeldung.com/java-split-string)
- [Introduction to Java Serialization](http://www.baeldung.com/java-serialization)
- [How to Remove the Last Character of a String?](http://www.baeldung.com/java-remove-last-character-of-string)
- [ClassNotFoundException vs NoClassDefFoundError](http://www.baeldung.com/java-classnotfoundexception-and-noclassdeffounderror)
- [Guide to UUID in Java](http://www.baeldung.com/java-uuid)
- [Guide to Escaping Characters in Java RegExps](http://www.baeldung.com/java-regexp-escape-char)
- [Guide to hashCode() in Java](http://www.baeldung.com/java-hashcode)
- [Difference between URL and URI](http://www.baeldung.com/java-url-vs-uri)
- [Broadcasting and Multicasting in Java](http://www.baeldung.com/java-broadcast-multicast)
- [CharSequence vs. String in Java](http://www.baeldung.com/java-char-sequence-string)
- [Period and Duration in Java](http://www.baeldung.com/java-period-duration)
- [Guide to the Diamond Operator in Java](http://www.baeldung.com/java-diamond-operator)
- [“Sneaky Throws” in Java](http://www.baeldung.com/java-sneaky-throws)
- [OutOfMemoryError: GC Overhead Limit Exceeded](http://www.baeldung.com/java-gc-overhead-limit-exceeded)
- [StringBuilder and StringBuffer in Java](http://www.baeldung.com/java-string-builder-string-buffer)
- [Creating a Java Compiler Plugin](http://www.baeldung.com/java-build-compiler-plugin)
- [A Guide to the Static Keyword in Java](http://www.baeldung.com/java-static)
- [Initializing Arrays in Java](http://www.baeldung.com/java-initialize-array)
- [Guide to Java String Pool](http://www.baeldung.com/java-string-pool)
- [Quick Example - Comparator vs Comparable in Java](http://www.baeldung.com/java-comparator-comparable)
- [Quick Guide to Java Stack](http://www.baeldung.com/java-stack)
- [The Java continue and break Keywords](http://www.baeldung.com/java-continue-and-break)
- [Guide to java.util.Formatter](http://www.baeldung.com/java-string-formatter)
- [Batch Processing in JDBC](http://www.baeldung.com/jdbc-batch-processing)
- [Check if a Java Array Contains a Value](http://www.baeldung.com/java-array-contains-value)
- [How to Invert an Array in Java](http://www.baeldung.com/java-invert-array)
- [Guide to the Cipher Class](http://www.baeldung.com/java-cipher-class)
@ -90,7 +76,6 @@
- [Implementing a Binary Tree in Java](http://www.baeldung.com/java-binary-tree)
- [A Guide to ThreadLocalRandom in Java](http://www.baeldung.com/java-thread-local-random)
- [RegEx for matching Date Pattern in Java](http://www.baeldung.com/java-date-regular-expressions)
- [Introduction to the JDBC RowSet Interface in Java](http://www.baeldung.com/java-jdbc-rowset)
- [Nested Classes in Java](http://www.baeldung.com/java-nested-classes)
- [A Guide to Java Loops](http://www.baeldung.com/java-loops)
- [Varargs in Java](http://www.baeldung.com/java-varargs)
@ -105,15 +90,12 @@
- [The Trie Data Structure in Java](http://www.baeldung.com/trie-java)
- [Introduction to Javadoc](http://www.baeldung.com/javadoc)
- [How to Make a Deep Copy of an Object in Java](http://www.baeldung.com/java-deep-copy)
- [Check if a String is a Palindrome](http://www.baeldung.com/java-palindrome)
- [Comparing Strings in Java](http://www.baeldung.com/java-compare-strings)
- [Guide to Inheritance in Java](http://www.baeldung.com/java-inheritance)
- [Guide to Externalizable Interface in Java](http://www.baeldung.com/java-externalizable)
- [Object Type Casting in Java](http://www.baeldung.com/java-type-casting)
- [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)
- [An Advanced Tagging Implementation with JPA](http://www.baeldung.com/jpa-tagging-advanced)
- [Handling Daylight Savings Time in Java](http://www.baeldung.com/java-daylight-savings)
- [Inheritance and Composition (Is-a vs Has-a relationship) in Java](http://www.baeldung.com/java-inheritance-composition)
- [Finding Max/Min of a List or Collection](http://www.baeldung.com/java-collection-min-max)
@ -139,11 +121,9 @@
- [Infinite Loops in Java](http://www.baeldung.com/infinite-loops-java)
- [Using Java Assertions](http://www.baeldung.com/java-assert)
- [Pass-By-Value as a Parameter Passing Mechanism in Java](http://www.baeldung.com/java-pass-by-value-or-pass-by-reference)
- [Check If a String Is Numeric in Java](http://www.baeldung.com/java-check-string-number)
- [Variable and Method Hiding in Java](http://www.baeldung.com/java-variable-method-hiding)
- [Access Modifiers in Java](http://www.baeldung.com/java-access-modifiers)
- [Infinite Loops in Java](http://www.baeldung.com/infinite-loops-java)
- [Why Use char[] Array Over a String for Storing Passwords in Java?](http://www.baeldung.com/java-storing-passwords)
- [Introduction to Creational Design Patterns](http://www.baeldung.com/creational-design-patterns)
- [Proxy, Decorator, Adapter and Bridge Patterns](http://www.baeldung.com/java-structural-design-patterns)
- [Singletons in Java](http://www.baeldung.com/java-singleton)
@ -157,7 +137,6 @@
- [Importance of Main Manifest Attribute in a Self-Executing JAR](http://www.baeldung.com/java-jar-executable-manifest-main-class)
- [Extracting Year, Month and Day from Date in Java](http://www.baeldung.com/java-year-month-day)
- [Get Date Without Time in Java](http://www.baeldung.com/java-date-without-time)
- [Convert a String to Title Case](http://www.baeldung.com/java-string-title-case)
- [How to Get the File Extension of a File in Java](http://www.baeldung.com/java-file-extension)
- [Immutable Objects in Java](http://www.baeldung.com/java-immutable-object)
- [Console I/O in Java](http://www.baeldung.com/java-console-input-output)
@ -171,3 +150,5 @@
- [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)
- [Java Constructors vs Static Factory Methods](https://www.baeldung.com/java-constructors-vs-static-factory-methods)
- [Differences Between Final, Finally and Finalize in Java](https://www.baeldung.com/java-final-finally-finalize)

5
core-java/pom.xml
View File

@ -137,11 +137,6 @@
<artifactId>mail</artifactId>
<version>${javax.mail.version}</version>
</dependency>
<dependency>
<groupId>com.ibm.icu</groupId>
<artifactId>icu4j</artifactId>
<version>${icu4j.version}</version>
</dependency>
<!-- Mime Type Resolution Libraries -->
<dependency>
<groupId>org.apache.tika</groupId>

2
core-java/src/main/java/com/baeldung/constructorsstaticfactorymethods/entities/User.java
View File

@ -8,7 +8,7 @@ import java.util.logging.SimpleFormatter;
public class User {
private static User instance = null;
private static volatile User instance = null;
private static final Logger LOGGER = Logger.getLogger(User.class.getName());
private final String name;
private final String email;

14
core-java/src/main/java/com/baeldung/exceptionhandling/Exceptions.java
View File

@ -25,7 +25,11 @@ public class Exceptions {
}
public List<Player> loadAllPlayers(String playersFile) throws IOException{
throw new IOException();
try {
throw new IOException();
} catch(IOException ex) {
throw new IllegalStateException();
}
}
public int getPlayerScoreThrows(String playerFile) throws FileNotFoundException {
@ -160,7 +164,13 @@ public class Exceptions {
}
public void throwAsGotoAntiPattern() throws MyException {
throw new MyException();
try {
// bunch of code
throw new MyException();
// second bunch of code
} catch ( MyException e ) {
// third bunch of code
}
}
public int getPlayerScoreSwallowingExceptionAntiPattern(String playerFile) {

3
core-java/src/main/java/com/baeldung/hashcode/entities/User.java
View File

@ -25,7 +25,7 @@ public class User {
if (this.getClass() != o.getClass())
return false;
User user = (User) o;
return id != user.id && (!name.equals(user.name) && !email.equals(user.email));
return id == user.id && (name.equals(user.name) && email.equals(user.email));
}
@Override
@ -38,4 +38,5 @@ public class User {
return hash;
}
// getters and setters here
}

15
core-java/src/main/java/com/baeldung/throwsexception/Calculator.java Normal file
View File

@ -0,0 +1,15 @@
package com.baeldung.throwsexception;
public class Calculator {
public double divide(double a, double b) {
if (b == 0) {
throw new DivideByZeroException("Divider cannot be equal to zero!");
}
return a/b;
}
}

9
core-java/src/main/java/com/baeldung/throwsexception/DataAccessException.java Normal file
View File

@ -0,0 +1,9 @@
package com.baeldung.throwsexception;
public class DataAccessException extends RuntimeException {
public DataAccessException(String message, Throwable cause) {
super(message, cause);
}
}

9
core-java/src/main/java/com/baeldung/throwsexception/DivideByZeroException.java Normal file
View File

@ -0,0 +1,9 @@
package com.baeldung.throwsexception;
public class DivideByZeroException extends RuntimeException {
public DivideByZeroException(String message) {
super(message);
}
}

41
core-java/src/main/java/com/baeldung/throwsexception/Main.java Normal file
View File

@ -0,0 +1,41 @@
package com.baeldung.throwsexception;
import com.sun.mail.iap.ConnectionException;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.net.SocketException;
public class Main {
public static void main(String[] args) throws FileNotFoundException {
TryCatch tryCatch = new TryCatch();
try {
tryCatch.execute();
} catch (ConnectionException | SocketException ex) {
System.out.println("IOException");
} catch (Exception ex) {
System.out.println("General exception");
}
checkedException();
checkedExceptionWithThrows();
}
private static void checkedExceptionWithThrows() throws FileNotFoundException {
File file = new File("not_existing_file.txt");
FileInputStream stream = new FileInputStream(file);
}
private static void checkedException() {
File file = new File("not_existing_file.txt");
try {
FileInputStream stream = new FileInputStream(file);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
}
}

18
core-java/src/main/java/com/baeldung/throwsexception/PersonRepository.java Normal file
View File

@ -0,0 +1,18 @@
package com.baeldung.throwsexception;
import javax.annotation.Nullable;
import java.sql.SQLException;
import java.util.List;
public class PersonRepository {
@Nullable
public String findNameById(String id) {
return id == null ? null : "example-name";
}
public List<String> findAll() throws SQLException {
throw new SQLException();
}
}

22
core-java/src/main/java/com/baeldung/throwsexception/SimpleService.java Normal file
View File

@ -0,0 +1,22 @@
package com.baeldung.throwsexception;
import java.sql.SQLException;
public class SimpleService {
private PersonRepository personRepository = new PersonRepository();
public void wrappingException() {
try {
personRepository.findAll();
} catch (SQLException e) {
throw new DataAccessException("SQL Exception", e);
}
}
public void runtimeNullPointerException() {
String a = null;
a.length();
}
}

13
core-java/src/main/java/com/baeldung/throwsexception/TryCatch.java Normal file
View File

@ -0,0 +1,13 @@
package com.baeldung.throwsexception;
import com.sun.mail.iap.ConnectionException;
import java.net.SocketException;
public class TryCatch {
public void execute() throws SocketException, ConnectionException, Exception {
//code that would throw any of: SocketException, ConnectionException, Exception
}
}

2
core-java/src/main/resources/logback.xml
View File

@ -2,7 +2,7 @@
<configuration>
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>web - %date [%thread] %-5level %logger{36} - %message%n
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
</pattern>
</encoder>
</appender>

42
core-java/src/test/java/com/baeldung/array/RemoveFirstElementUnitTest.java
View File

@ -1,42 +0,0 @@
package com.baeldung.array;
import org.junit.Test;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.LinkedList;
import java.util.List;
import static org.assertj.core.api.Assertions.assertThat;
public class RemoveFirstElementUnitTest {
@Test
public void givenStringArray_whenRemovingFirstElement_thenArrayIsSmallerAndElementRemoved() {
String[] stringArray = {"foo", "bar", "baz"};
String[] modifiedArray = Arrays.copyOfRange(stringArray, 1, stringArray.length);
assertThat(modifiedArray.length).isEqualTo(2);
assertThat(modifiedArray[0]).isEqualTo("bar");
}
@Test
public void givenArrayList_whenRemovingFirstElement_thenListSmallerAndElementRemoved() {
List<String> stringList = new ArrayList<>(Arrays.asList("foo", "bar", "baz"));
stringList.remove(0);
assertThat(stringList.size()).isEqualTo(2);
assertThat(stringList.get(0)).isEqualTo("bar");
}
@Test
public void givenLinkedList_whenRemovingFirstElement_thenListSmallerAndElementRemoved() {
List<String> stringList = new LinkedList<>(Arrays.asList("foo", "bar", "baz"));
stringList.remove(0);
assertThat(stringList.size()).isEqualTo(2);
assertThat(stringList.get(0)).isEqualTo("bar");
}
}

23
core-java/src/test/java/com/baeldung/enums/PizzaUnitTest.java
View File

@ -75,26 +75,5 @@ public class PizzaUnitTest {
pz.setStatus(Pizza.PizzaStatusEnum.READY);
pz.deliver();
assertTrue(pz.getStatus() == Pizza.PizzaStatusEnum.DELIVERED);
}
@Test
public void whenConvertedIntoEnum_thenGetsConvertedCorrectly() {
String pizzaEnumValue = "READY";
PizzaStatusEnum pizzaStatusEnum = PizzaStatusEnum.valueOf(pizzaEnumValue);
assertTrue(pizzaStatusEnum == PizzaStatusEnum.READY);
}
@Test(expected = IllegalArgumentException.class)
public void whenConvertedIntoEnum_thenThrowsException() {
String pizzaEnumValue = "rEAdY";
PizzaStatusEnum pizzaStatusEnum = PizzaStatusEnum.valueOf(pizzaEnumValue);
}
@Test(expected = IllegalArgumentException.class)
public void givenInvalidEnumValueContentWiseAsString_whenConvertedIntoEnum_thenThrowsException() {
String pizzaEnumValue = "invalid";
PizzaStatusEnum pizzaStatusEnum = PizzaStatusEnum.valueOf(pizzaEnumValue);
}
}
}

8
core-java/src/test/java/com/baeldung/exceptionhandling/ExceptionsUnitTest.java
View File

@ -21,7 +21,7 @@ public class ExceptionsUnitTest {
@Test
public void loadAllPlayers() {
assertThatThrownBy(() -> exceptions.loadAllPlayers(""))
.isInstanceOf(IOException.class);
.isInstanceOf(IllegalStateException.class);
}
@Test
@ -72,12 +72,6 @@ public class ExceptionsUnitTest {
.isInstanceOf(NullPointerException.class);
}
@Test
public void throwAsGotoAntiPattern() {
assertThatThrownBy(() -> exceptions.throwAsGotoAntiPattern())
.isInstanceOf(MyException.class);
}
@Test
public void getPlayerScoreSwallowingExceptionAntiPatternAlternative2() {
assertThatThrownBy(() -> exceptions.getPlayerScoreSwallowingExceptionAntiPatternAlternative2(""))

17
core-java/src/test/java/com/baeldung/throwsexception/CalculatorUnitTest.java Normal file
View File

@ -0,0 +1,17 @@
package com.baeldung.throwsexception;
import org.junit.Test;
import static org.junit.jupiter.api.Assertions.assertThrows;
public class CalculatorUnitTest {
@Test
public void whenDividerIsZero_thenDivideByZeroExceptionIsThrown() {
Calculator calculator = new Calculator();
assertThrows(DivideByZeroException.class,
() -> calculator.divide(10, 0));
}
}

32
core-java/src/test/java/com/baeldung/throwsexception/PersonRepositoryUnitTest.java Normal file
View File

@ -0,0 +1,32 @@
package com.baeldung.throwsexception;
import org.junit.Test;
import java.util.Optional;
import static org.junit.jupiter.api.Assertions.assertAll;
import static org.junit.jupiter.api.Assertions.assertThrows;
public class PersonRepositoryUnitTest {
PersonRepository personRepository = new PersonRepository();
@Test
public void whenIdIsNull_thenExceptionIsThrown() throws Exception {
assertThrows(Exception.class,
() ->
Optional
.ofNullable(personRepository.findNameById(null))
.orElseThrow(Exception::new));
}
@Test
public void whenIdIsNonNull_thenNoExceptionIsThrown() throws Exception {
assertAll(
() ->
Optional
.ofNullable(personRepository.findNameById("id"))
.orElseThrow(Exception::new));
}
}

22
core-java/src/test/java/com/baeldung/throwsexception/SimpleServiceUnitTest.java Normal file
View File

@ -0,0 +1,22 @@
package com.baeldung.throwsexception;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.*;
public class SimpleServiceUnitTest {
SimpleService simpleService = new SimpleService();
@Test
void whenSQLExceptionIsThrown_thenShouldBeRethrownWithWrappedException() {
assertThrows(DataAccessException.class,
() -> simpleService.wrappingException());
}
@Test
void whenCalled_thenNullPointerExceptionIsThrown() {
assertThrows(NullPointerException.class,
() -> simpleService.runtimeNullPointerException());
}
}

2
core-java/src/test/java/com/baeldung/unsafe/UnsafeUnitTest.java
View File

@ -1,6 +1,7 @@
package com.baeldung.unsafe;
import org.junit.Before;
import org.junit.Ignore;
import org.junit.Test;
import sun.misc.Unsafe;
@ -56,6 +57,7 @@ public class UnsafeUnitTest {
}
@Test
@Ignore // Uncomment for local
public void givenArrayBiggerThatMaxInt_whenAllocateItOffHeapMemory_thenSuccess() throws NoSuchFieldException, IllegalAccessException {
//given
long SUPER_SIZE = (long) Integer.MAX_VALUE * 2;

81
core-java/src/test/java/org/baeldung/java/enums/PizzaUnitTest.java
View File

@ -1,81 +0,0 @@
package org.baeldung.java.enums;
import static junit.framework.TestCase.assertTrue;
import java.util.ArrayList;
import java.util.EnumMap;
import java.util.List;
import org.junit.Test;
import com.baeldung.enums.Pizza;
public class PizzaUnitTest {
@Test
public void givenPizaOrder_whenReady_thenDeliverable() {
Pizza testPz = new Pizza();
testPz.setStatus(Pizza.PizzaStatusEnum.READY);
assertTrue(testPz.isDeliverable());
}
@Test
public void givenPizaOrders_whenRetrievingUnDeliveredPzs_thenCorrectlyRetrieved() {
List<Pizza> pzList = new ArrayList<>();
Pizza pz1 = new Pizza();
pz1.setStatus(Pizza.PizzaStatusEnum.DELIVERED);
Pizza pz2 = new Pizza();
pz2.setStatus(Pizza.PizzaStatusEnum.ORDERED);
Pizza pz3 = new Pizza();
pz3.setStatus(Pizza.PizzaStatusEnum.ORDERED);
Pizza pz4 = new Pizza();
pz4.setStatus(Pizza.PizzaStatusEnum.READY);
pzList.add(pz1);
pzList.add(pz2);
pzList.add(pz3);
pzList.add(pz4);
List<Pizza> undeliveredPzs = Pizza.getAllUndeliveredPizzas(pzList);
assertTrue(undeliveredPzs.size() == 3);
}
@Test
public void givenPizaOrders_whenGroupByStatusCalled_thenCorrectlyGrouped() {
List<Pizza> pzList = new ArrayList<>();
Pizza pz1 = new Pizza();
pz1.setStatus(Pizza.PizzaStatusEnum.DELIVERED);
Pizza pz2 = new Pizza();
pz2.setStatus(Pizza.PizzaStatusEnum.ORDERED);
Pizza pz3 = new Pizza();
pz3.setStatus(Pizza.PizzaStatusEnum.ORDERED);
Pizza pz4 = new Pizza();
pz4.setStatus(Pizza.PizzaStatusEnum.READY);
pzList.add(pz1);
pzList.add(pz2);
pzList.add(pz3);
pzList.add(pz4);
EnumMap<Pizza.PizzaStatusEnum, List<Pizza>> map = Pizza.groupPizzaByStatus(pzList);
assertTrue(map.get(Pizza.PizzaStatusEnum.DELIVERED).size() == 1);
assertTrue(map.get(Pizza.PizzaStatusEnum.ORDERED).size() == 2);
assertTrue(map.get(Pizza.PizzaStatusEnum.READY).size() == 1);
}
@Test
public void givenPizaOrder_whenDelivered_thenPizzaGetsDeliveredAndStatusChanges() {
Pizza pz = new Pizza();
pz.setStatus(Pizza.PizzaStatusEnum.READY);
pz.deliver();
assertTrue(pz.getStatus() == Pizza.PizzaStatusEnum.DELIVERED);
}
}

43
core-kotlin/src/main/kotlin/com/baeldung/builder/FoodOrder.kt
View File

@ -1,39 +1,22 @@
package com.baeldung.builder
class FoodOrder private constructor(builder: FoodOrder.Builder) {
val bread: String?
val condiments: String?
val meat: String?
val fish: String?
init {
this.bread = builder.bread
this.condiments = builder.condiments
this.meat = builder.meat
this.fish = builder.fish
}
class Builder {
var bread: String? = null
private set
var condiments: String? = null
private set
var meat: String? = null
private set
var fish: String? = null
private set
class FoodOrder(
val bread: String?,
val condiments: String?,
val meat: String?,
val fish: String?
) {
data class Builder(
var bread: String? = null,
var condiments: String? = null,
var meat: String? = null,
var fish: String? = null) {
fun bread(bread: String) = apply { this.bread = bread }
fun condiments(condiments: String) = apply { this.condiments = condiments }
fun meat(meat: String) = apply { this.meat = meat }
fun fish(fish: String) = apply { this.fish = fish }
fun build() = FoodOrder(this)
fun build() = FoodOrder(bread, condiments, meat, fish)
}
}

8
core-kotlin/src/main/kotlin/com/baeldung/builder/FoodOrderNamed.kt
View File

@ -1,7 +1,7 @@
package com.baeldung.builder
data class FoodOrderNamed(
val bread: String? = null,
val condiments: String? = null,
val meat: String? = null,
val fish: String? = null)
val bread: String? = null,
val condiments: String? = null,
val meat: String? = null,
val fish: String? = null)

9
core-kotlin/src/main/kotlin/com/baeldung/builder/Main.kt Normal file
View File

@ -0,0 +1,9 @@
package com.baeldung.builder
fun main(args: Array<String>) {
FoodOrder.Builder()
.bread("bread")
.condiments("condiments")
.meat("meat")
.fish("bread").let { println(it) }
}

55
core-kotlin/src/test/kotlin/com/baeldung/random/RandomNumberTest.kt Normal file
View File

@ -0,0 +1,55 @@
import org.junit.jupiter.api.Test
import java.util.concurrent.ThreadLocalRandom
import kotlin.test.assertTrue
class RandomNumberTest {
@Test
fun whenRandomNumberWithJavaUtilMath_thenResultIsBetween0And1() {
val randomNumber = Math.random()
assertTrue { randomNumber >=0 }
assertTrue { randomNumber <= 1 }
}
@Test
fun whenRandomNumberWithJavaThreadLocalRandom_thenResultsInDefaultRanges() {
val randomDouble = ThreadLocalRandom.current().nextDouble()
val randomInteger = ThreadLocalRandom.current().nextInt()
val randomLong = ThreadLocalRandom.current().nextLong()
assertTrue { randomDouble >= 0 }
assertTrue { randomDouble <= 1 }
assertTrue { randomInteger >= Integer.MIN_VALUE }
assertTrue { randomInteger <= Integer.MAX_VALUE }
assertTrue { randomLong >= Long.MIN_VALUE }
assertTrue { randomLong <= Long.MAX_VALUE }
}
@Test
fun whenRandomNumberWithKotlinJSMath_thenResultIsBetween0And1() {
val randomDouble = Math.random()
assertTrue { randomDouble >=0 }
assertTrue { randomDouble <= 1 }
}
@Test
fun whenRandomNumberWithKotlinNumberRange_thenResultInGivenRange() {
val randomInteger = (1..12).shuffled().first()
assertTrue { randomInteger >= 1 }
assertTrue { randomInteger <= 12 }
}
@Test
fun whenRandomNumberWithJavaThreadLocalRandom_thenResultsInGivenRanges() {
val randomDouble = ThreadLocalRandom.current().nextDouble(1.0, 10.0)
val randomInteger = ThreadLocalRandom.current().nextInt(1, 10)
val randomLong = ThreadLocalRandom.current().nextLong(1, 10)
assertTrue { randomDouble >= 1 }
assertTrue { randomDouble <= 10 }
assertTrue { randomInteger >= 1 }
assertTrue { randomInteger <= 10 }
assertTrue { randomLong >= 1 }
assertTrue { randomLong <= 10 }
}
}

2
couchbase/src/main/resources/logback.xml
View File

@ -2,7 +2,7 @@
<configuration>
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>web - %date [%thread] %-5level %logger{36} - %message%n
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
</pattern>
</encoder>
</appender>

2
couchbase/src/test/resources/logback.xml
View File

@ -2,7 +2,7 @@
<configuration>
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>web - %date [%thread] %-5level %logger{36} - %message%n
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
</pattern>
</encoder>
</appender>

2
disruptor/pom.xml
View File

@ -112,6 +112,7 @@
<plugin>
<groupId>com.jolira</groupId>
<artifactId>onejar-maven-plugin</artifactId>
<version>${onejar-maven-plugin.version}</version>
<executions>
<execution>
<configuration>
@ -138,6 +139,7 @@
<maven-shade-plugin.version>2.4.3</maven-shade-plugin.version>
<maven-jar-plugin.version>3.0.2</maven-jar-plugin.version>
<onejar-maven-plugin.version>1.4.4</onejar-maven-plugin.version>
</properties>
</project>

2
ethereum/pom.xml
View File

@ -184,6 +184,7 @@
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<version>${spring-boot-maven-plugin.version}</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
@ -224,6 +225,7 @@
<junit.version>4.12</junit.version>
<logback.version>1.2.3</logback.version>
<slf4j.version>1.7.25</slf4j.version>
<spring-boot-maven-plugin.version>2.0.4.RELEASE</spring-boot-maven-plugin.version>
</properties>
</project>

2
flyway/src/main/resources/logback.xml
View File

@ -2,7 +2,7 @@
<configuration>
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>%date [%thread] %-5level %logger{36} - %message%n
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
</pattern>
</encoder>
</appender>

19
gson/src/main/java/org/baeldung/gson/entities/User.java Normal file
View File

@ -0,0 +1,19 @@
package org.baeldung.gson.entities;
public class User {
private int id;
private String name;
private transient String nationality;
public User(int id, String name, String nationality) {
this.id = id;
this.name = name;
this.nationality = nationality;
}
public User(int id, String name) {
this(id, name, null);
}
}

2
gson/src/main/resources/logback.xml
View File

@ -2,7 +2,7 @@
<configuration>
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>web - %date [%thread] %-5level %logger{36} - %message%n
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
</pattern>
</encoder>
</appender>

43
gson/src/test/java/org/baeldung/gson/serialization/test/JsonFileUnitTest.java Normal file
View File

@ -0,0 +1,43 @@
package org.baeldung.gson.serialization.test;
import java.io.FileWriter;
import java.io.IOException;
import java.io.Writer;
import java.nio.file.Files;
import java.nio.file.Paths;
import org.baeldung.gson.entities.User;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameter;
import org.junit.runners.Parameterized.Parameters;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
@RunWith(Parameterized.class)
public class JsonFileUnitTest {
@Parameter
public Object object;
@Parameters
public static Object[] data() {
return new Object[] { 123.45, new User(1, "Tom", "American") };
}
@Test
public void givenProperData_whenStoredInFile_shouldSaveJsonSuccessfully() {
String filePath = "target/output.json";
try (Writer writer = new FileWriter(filePath)) {
Gson gson = new GsonBuilder().setPrettyPrinting().create();
gson.toJson(object, writer);
Assert.assertTrue(Files.exists(Paths.get(filePath)));
} catch (IOException e) {
e.printStackTrace();
}
}
}

2
guava/src/main/resources/logback.xml
View File

@ -2,7 +2,7 @@
<configuration>
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>web - %date [%thread] %-5level %logger{36} - %message%n
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
</pattern>
</encoder>
</appender>

2
hazelcast/src/main/resources/logback.xml
View File

@ -2,7 +2,7 @@
<configuration>
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>web - %date [%thread] %-5level %logger{36} - %message%n
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
</pattern>
</encoder>
</appender>

2
hibernate5/src/main/resources/logback.xml
View File

@ -2,7 +2,7 @@
<configuration>
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern> %date [%thread] %-5level %logger{36} - %message%n
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
</pattern>
</encoder>
</appender>

2
httpclient/src/main/resources/logback.xml
View File

@ -2,7 +2,7 @@
<configuration>
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>web - %date [%thread] %-5level %logger{36} - %message%n
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
</pattern>
</encoder>
</appender>

2
influxdb/src/test/resources/logback.xml
View File

@ -2,7 +2,7 @@
<configuration>
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>web - %date [%thread] %-5level %logger{36} - %message%n
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
</pattern>
</encoder>
</appender>

2
jackson/src/main/resources/logback.xml
View File

@ -2,7 +2,7 @@
<configuration>
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>web - %date [%thread] %-5level %logger{36} - %message%n
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
</pattern>
</encoder>
</appender>

2
java-numbers/src/main/resources/logback.xml
View File

@ -2,7 +2,7 @@
<configuration>
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>web - %date [%thread] %-5level %logger{36} - %message%n
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
</pattern>
</encoder>
</appender>

27
java-strings/README.md Normal file
View File

@ -0,0 +1,27 @@
=========
## Java Strings Cookbooks and Examples
### Relevant Articles:
- [String Operations with Java Streams](http://www.baeldung.com/java-stream-operations-on-strings)
- [Converting String to Stream of chars](http://www.baeldung.com/java-string-to-stream)
- [Java 8 StringJoiner](http://www.baeldung.com/java-string-joiner)
- [Image to Base64 String Conversion](http://www.baeldung.com/java-base64-image-string)
- [Java – Generate Random String](http://www.baeldung.com/java-random-string)
- [Convert char to String in Java](http://www.baeldung.com/java-convert-char-to-string)
- [Convert String to int or Integer in Java](http://www.baeldung.com/java-convert-string-to-int-or-integer)
- [How to Convert String to different data types in Java](http://www.baeldung.com/java-string-conversions)
- [Converting Strings to Enums in Java](http://www.baeldung.com/java-string-to-enum)
- [Quick Guide to the Java StringTokenizer](http://www.baeldung.com/java-stringtokenizer)
- [Count Occurrences of a Char in a String](http://www.baeldung.com/java-count-chars)
- [Split a String in Java](http://www.baeldung.com/java-split-string)
- [How to Remove the Last Character of a String?](http://www.baeldung.com/java-remove-last-character-of-string)
- [CharSequence vs. String in Java](http://www.baeldung.com/java-char-sequence-string)
- [StringBuilder and StringBuffer in Java](http://www.baeldung.com/java-string-builder-string-buffer)
- [Guide to Java String Pool](http://www.baeldung.com/java-string-pool)
- [Check if a String is a Palindrome](http://www.baeldung.com/java-palindrome)
- [Comparing Strings in Java](http://www.baeldung.com/java-compare-strings)
- [Check If a String Is Numeric in Java](http://www.baeldung.com/java-check-string-number)
- [Why Use char[] Array Over a String for Storing Passwords in Java?](http://www.baeldung.com/java-storing-passwords)
- [Convert a String to Title Case](http://www.baeldung.com/java-string-title-case)
- [Compact Strings in Java 9](http://www.baeldung.com/java-9-compact-string)

107
java-strings/pom.xml Normal file
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@ -0,0 +1,107 @@
<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</groupId>
<artifactId>java-strings</artifactId>
<version>0.1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<name>java-strings</name>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-java</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../parent-java</relativePath>
</parent>
<dependencies>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>${commons-io.version}</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>${commons-lang3.version}</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>${log4j.version}</version>
</dependency>
<dependency>
<groupId>commons-codec</groupId>
<artifactId>commons-codec</artifactId>
<version>${commons-codec.version}</version>
</dependency>
<!-- test scoped -->
<dependency>
<groupId>org.assertj</groupId>
<artifactId>assertj-core</artifactId>
<version>${assertj.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.openjdk.jmh</groupId>
<artifactId>jmh-core</artifactId>
<version>${jmh-core.version}</version>
</dependency>
<dependency>
<groupId>com.ibm.icu</groupId>
<artifactId>icu4j</artifactId>
<version>${icu4j.version}</version>
</dependency>
</dependencies>
<build>
<finalName>java-strings</finalName>
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
</resource>
</resources>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<executions>
<execution>
<id>copy-dependencies</id>
<phase>prepare-package</phase>
<goals>
<goal>copy-dependencies</goal>
</goals>
<configuration>
<outputDirectory>${project.build.directory}/libs</outputDirectory>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
<compilerArgument>-parameters</compilerArgument>
</configuration>
</plugin>
</plugins>
</build>
<properties>
<!-- util -->
<commons-lang3.version>3.5</commons-lang3.version>
<commons-codec.version>1.10</commons-codec.version>
<!-- testing -->
<assertj.version>3.6.1</assertj.version>
<jmh-core.version>1.19</jmh-core.version>
<icu4j.version>61.1</icu4j.version>
</properties>
</project>

0
core-java/src/main/java/com/baeldung/datetime/UseLocalDateTime.java → java-strings/src/main/java/com/baeldung/datetime/UseLocalDateTime.java
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44
java-strings/src/main/java/com/baeldung/enums/PizzaStatusEnum.java Normal file
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@ -0,0 +1,44 @@
package com.baeldung.enums;
public enum PizzaStatusEnum {
ORDERED(5) {
@Override
public boolean isOrdered() {
return true;
}
},
READY(2) {
@Override
public boolean isReady() {
return true;
}
},
DELIVERED(0) {
@Override
public boolean isDelivered() {
return true;
}
};
private int timeToDelivery;
public boolean isOrdered() {
return false;
}
public boolean isReady() {
return false;
}
public boolean isDelivered() {
return false;
}
public int getTimeToDelivery() {
return timeToDelivery;
}
PizzaStatusEnum(int timeToDelivery) {
this.timeToDelivery = timeToDelivery;
}
}

0
core-java-9/src/main/java/com/baeldung/java9/compactstring/CompactStringDemo.java → java-strings/src/main/java/com/baeldung/java9/compactstring/CompactStringDemo.java
View File

0
core-java-8/src/main/java/com/baeldung/string/JoinerSplitter.java → java-strings/src/main/java/com/baeldung/string/JoinerSplitter.java
View File

0
core-java/src/main/java/com/baeldung/string/Palindrome.java → java-strings/src/main/java/com/baeldung/string/Palindrome.java
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90
core-java/src/main/java/com/baeldung/string/StringBufferStringBuilder.java → java-strings/src/main/java/com/baeldung/string/StringBufferStringBuilder.java
View File

@ -1,46 +1,46 @@
package com.baeldung.string;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.Scope;
import org.openjdk.jmh.annotations.State;
import org.openjdk.jmh.runner.Runner;
import org.openjdk.jmh.runner.RunnerException;
import org.openjdk.jmh.runner.options.Options;
import org.openjdk.jmh.runner.options.OptionsBuilder;
public class StringBufferStringBuilder {
public static void main(String[] args) throws RunnerException {
Options opt = new OptionsBuilder()
.include(StringBufferStringBuilder.class.getSimpleName())
.build();
new Runner(opt).run();
}
@State(Scope.Benchmark)
public static class MyState {
int iterations = 1000;
String initial = "abc";
String suffix = "def";
}
@Benchmark
public StringBuffer benchmarkStringBuffer(MyState state) {
StringBuffer stringBuffer = new StringBuffer(state.initial);
for (int i = 0; i < state.iterations; i++) {
stringBuffer.append(state.suffix);
}
return stringBuffer;
}
@Benchmark
public StringBuilder benchmarkStringBuilder(MyState state) {
StringBuilder stringBuilder = new StringBuilder(state.initial);
for (int i = 0; i < state.iterations; i++) {
stringBuilder.append(state.suffix);
}
return stringBuilder;
}
package com.baeldung.string;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.Scope;
import org.openjdk.jmh.annotations.State;
import org.openjdk.jmh.runner.Runner;
import org.openjdk.jmh.runner.RunnerException;
import org.openjdk.jmh.runner.options.Options;
import org.openjdk.jmh.runner.options.OptionsBuilder;
public class StringBufferStringBuilder {
public static void main(String[] args) throws RunnerException {
Options opt = new OptionsBuilder()
.include(StringBufferStringBuilder.class.getSimpleName())
.build();
new Runner(opt).run();
}
@State(Scope.Benchmark)
public static class MyState {
int iterations = 1000;
String initial = "abc";
String suffix = "def";
}
@Benchmark
public StringBuffer benchmarkStringBuffer(MyState state) {
StringBuffer stringBuffer = new StringBuffer(state.initial);
for (int i = 0; i < state.iterations; i++) {
stringBuffer.append(state.suffix);
}
return stringBuffer;
}
@Benchmark
public StringBuilder benchmarkStringBuilder(MyState state) {
StringBuilder stringBuilder = new StringBuilder(state.initial);
for (int i = 0; i < state.iterations; i++) {
stringBuilder.append(state.suffix);
}
return stringBuilder;
}
}

0
core-java/src/main/java/com/baeldung/string/StringHelper.java → java-strings/src/main/java/com/baeldung/string/StringHelper.java
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