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Merge pull request #9 from eugenp/master 

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This commit is contained in:
Chandra Prakash 2018-12-04 06:20:37 -05:00 committed by GitHub
parent d578e45a8f 3addff050f
commit cd3dc85751
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1158 changed files with 16603 additions and 3186 deletions
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2
.travis.yml
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@ -4,7 +4,7 @@ before_install:
- echo "MAVEN_OPTS='-Xmx2048M -Xss128M -XX:+CMSClassUnloadingEnabled -XX:+UseG1GC -XX:-UseGCOverheadLimit'" > ~/.mavenrc
install: skip
script: travis_wait 60 mvn -q install -Pdefault-first,default-second
script: travis_wait 60 mvn -q install -Pdefault-first,default-second -Dgib.enabled=true
sudo: required

7
algorithms-genetic/pom.xml
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@ -1,10 +1,10 @@
<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>algorithms-genetic</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>algorithms-genetic</name>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-modules</artifactId>
@ -61,4 +61,5 @@
<commons-codec.version>1.11</commons-codec.version>
</properties>
</project>
</project>

4
algorithms-miscellaneous-1/pom.xml
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@ -1,10 +1,10 @@
<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>algorithms-miscellaneous-1</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>algorithms-miscellaneous-1</name>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-modules</artifactId>

1
algorithms-miscellaneous-2/README.md
View File

@ -17,3 +17,4 @@
- [Round Up to the Nearest Hundred](https://www.baeldung.com/java-round-up-nearest-hundred)
- [Calculate Percentage in Java](https://www.baeldung.com/java-calculate-percentage)
- [Converting Between Byte Arrays and Hexadecimal Strings in Java](https://www.baeldung.com/java-byte-arrays-hex-strings)
- [Convert Latitude and Longitude to a 2D Point in Java](https://www.baeldung.com/java-convert-latitude-longitude)

2
algorithms-miscellaneous-2/pom.xml
View File

@ -1,9 +1,9 @@
<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>algorithms-miscellaneous-2</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>algorithms-miscellaneous-2</name>
<parent>
<groupId>com.baeldung</groupId>

2
algorithms-sorting/README.md
View File

@ -4,4 +4,4 @@
- [Merge Sort in Java](https://www.baeldung.com/java-merge-sort)
- [Quicksort Algorithm Implementation in Java](https://www.baeldung.com/java-quicksort)
- [Insertion Sort in Java](https://www.baeldung.com/java-insertion-sort)
- [Heap Sort in Java](https://www.baeldung.com/java-heap-sort)

2
algorithms-sorting/pom.xml
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@ -1,9 +1,9 @@
<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>algorithms-sorting</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>algorithms-sorting</name>
<parent>
<groupId>com.baeldung</groupId>

3
annotations/annotation-processing/pom.xml
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@ -3,7 +3,8 @@
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>
<artifactId>annotation-processing</artifactId>
<name>annotation-processing</name>
<parent>
<groupId>com.baeldung</groupId>
<version>1.0.0-SNAPSHOT</version>

1
annotations/annotation-user/pom.xml
View File

@ -3,6 +3,7 @@
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>
<artifactId>annotation-user</artifactId>
<name>annotation-user</name>
<parent>
<artifactId>annotations</artifactId>

3
annotations/pom.xml
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@ -4,7 +4,8 @@
<modelVersion>4.0.0</modelVersion>
<artifactId>annotations</artifactId>
<packaging>pom</packaging>
<name>annotations</name>
<parent>
<artifactId>parent-modules</artifactId>
<groupId>com.baeldung</groupId>

3
apache-avro/pom.xml
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@ -3,10 +3,9 @@
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>apache-avro</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>Apache Avro</name>
<name>apache-avro</name>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

3
apache-bval/pom.xml
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@ -4,7 +4,8 @@
<groupId>apache-bval</groupId>
<artifactId>apache-bval</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>apache-bval</name>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-modules</artifactId>

1
apache-curator/pom.xml
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@ -4,6 +4,7 @@
<artifactId>apache-curator</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>apache-curator</name>
<parent>
<groupId>com.baeldung</groupId>

3
apache-cxf/cxf-aegis/pom.xml
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@ -2,7 +2,8 @@
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<artifactId>cxf-aegis</artifactId>
<name>cxf-aegis</name>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>apache-cxf</artifactId>

3
apache-cxf/cxf-introduction/pom.xml
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@ -4,7 +4,8 @@
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<artifactId>cxf-introduction</artifactId>
<name>cxf-introduction</name>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>apache-cxf</artifactId>

3
apache-cxf/cxf-jaxrs-implementation/pom.xml
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@ -4,7 +4,8 @@
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<artifactId>cxf-jaxrs-implementation</artifactId>
<name>cxf-jaxrs-implementation</name>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>apache-cxf</artifactId>

1
apache-cxf/cxf-spring/pom.xml
View File

@ -3,6 +3,7 @@
<modelVersion>4.0.0</modelVersion>
<artifactId>cxf-spring</artifactId>
<packaging>war</packaging>
<name>cxf-spring</name>
<parent>
<groupId>com.baeldung</groupId>

2
apache-cxf/pom.xml
View File

@ -1,9 +1,9 @@
<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>apache-cxf</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>apache-cxf</name>
<packaging>pom</packaging>
<parent>

2
apache-cxf/sse-jaxrs/pom.xml
View File

@ -3,8 +3,8 @@
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>
<artifactId>sse-jaxrs</artifactId>
<name>sse-jaxrs</name>
<packaging>pom</packaging>
<parent>

7
apache-cxf/sse-jaxrs/sse-jaxrs-client/pom.xml
View File

@ -3,15 +3,15 @@
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>
<artifactId>sse-jaxrs-client</artifactId>
<name>sse-jaxrs-client</name>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>sse-jaxrs</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<artifactId>sse-jaxrs-client</artifactId>
<properties>
<cxf-version>3.2.0</cxf-version>
</properties>
@ -21,7 +21,6 @@
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.6.0</version>
<executions>
<execution>
<id>singleEvent</id>

8
apache-cxf/sse-jaxrs/sse-jaxrs-server/pom.xml
View File

@ -3,16 +3,16 @@
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>
<artifactId>sse-jaxrs-server</artifactId>
<name>sse-jaxrs-server</name>
<packaging>war</packaging>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>sse-jaxrs</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<artifactId>sse-jaxrs-server</artifactId>
<packaging>war</packaging>
<properties>
<liberty-maven-plugin.version>2.4.2</liberty-maven-plugin.version>
<failOnMissingWebXml>false</failOnMissingWebXml>

5
apache-geode/pom.xml
View File

@ -3,11 +3,10 @@
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>apache-geode</artifactId>
<version>1.0-SNAPSHOT</version>
<name>apache-geode</name>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-modules</artifactId>

1
apache-opennlp/pom.xml
View File

@ -4,6 +4,7 @@
<modelVersion>4.0.0</modelVersion>
<artifactId>apache-opennlp</artifactId>
<version>1.0-SNAPSHOT</version>
<name>apache-opennlp</name>
<packaging>jar</packaging>
<parent>

2
apache-poi/pom.xml
View File

@ -1,9 +1,9 @@
<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>apache-poi</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>apache-poi</name>
<parent>
<groupId>com.baeldung</groupId>

3
apache-pulsar/README.md Normal file
View File

@ -0,0 +1,3 @@
### Relevant Articles:
- [Introduction to Apache Pulsar](https://www.baeldung.com/apache-pulsar)

33
apache-pulsar/pom.xml
View File

@ -1,21 +1,22 @@
<?xml version="1.0" encoding="UTF-8"?>
<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<modelVersion>4.0.0</modelVersion>
<groupId>com.baeldung.pulsar</groupId>
<artifactId>pulsar-java</artifactId>
<version>0.0.1</version>
<modelVersion>4.0.0</modelVersion>
<groupId>com.baeldung.pulsar</groupId>
<artifactId>apache-pulsar</artifactId>
<version>0.0.1</version>
<name>apache-pulsar</name>
<dependencies>
<dependency>
<groupId>org.apache.pulsar</groupId>
<artifactId>pulsar-client</artifactId>
<version>2.1.1-incubating</version>
<scope>compile</scope>
</dependency>
</dependencies>
<properties>
<maven.compiler.target>1.8</maven.compiler.target>
<maven.compiler.source>1.8</maven.compiler.source>
</properties>
<dependencies>
<dependency>
<groupId>org.apache.pulsar</groupId>
<artifactId>pulsar-client</artifactId>
<version>2.1.1-incubating</version>
<scope>compile</scope>
</dependency>
</dependencies>
<properties>
<maven.compiler.target>1.8</maven.compiler.target>
<maven.compiler.source>1.8</maven.compiler.source>
</properties>
</project>

3
apache-shiro/pom.xml
View File

@ -5,7 +5,8 @@
<modelVersion>4.0.0</modelVersion>
<artifactId>apache-shiro</artifactId>
<version>1.0-SNAPSHOT</version>
<name>apache-shiro</name>
<parent>
<artifactId>parent-boot-1</artifactId>
<groupId>com.baeldung</groupId>

2
apache-thrift/pom.xml
View File

@ -1,9 +1,9 @@
<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>apache-thrift</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>apache-thrift</name>
<packaging>pom</packaging>
<parent>

4
apache-tika/pom.xml
View File

@ -1,10 +1,10 @@
<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>apache-tika</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>apache-tika</name>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-modules</artifactId>

2
apache-zookeeper/pom.xml
View File

@ -1,9 +1,9 @@
<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>apache-zookeeper</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>apache-zookeeper</name>
<packaging>jar</packaging>
<parent>

1
asm/pom.xml
View File

@ -5,6 +5,7 @@
<groupId>com.baeldung.examples</groupId>
<artifactId>asm</artifactId>
<version>1.0</version>
<name>asm</name>
<packaging>jar</packaging>
<parent>

3
atomix/pom.xml
View File

@ -4,7 +4,8 @@
<groupId>com.atomix.io</groupId>
<artifactId>atomix</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>atomix</name>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-modules</artifactId>

3
axon/pom.xml
View File

@ -3,7 +3,8 @@
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>
<artifactId>axon</artifactId>
<name>axon</name>
<parent>
<artifactId>parent-modules</artifactId>
<groupId>com.baeldung</groupId>

3
cas/cas-server/pom.xml
View File

@ -3,8 +3,9 @@
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>
<artifactId>cas-server</artifactId>
<packaging>war</packaging>
<version>1.0</version>
<name>cas-server</name>
<packaging>war</packaging>
<parent>
<artifactId>parent-boot-1</artifactId>

2
cdi/README.md
View File

@ -1,3 +1,5 @@
### Relevant Articles:
- [CDI Interceptor vs Spring AspectJ](http://www.baeldung.com/cdi-interceptor-vs-spring-aspectj)
- [An Introduction to CDI (Contexts and Dependency Injection) in Java](http://www.baeldung.com/java-ee-cdi)
- [Introduction to the Event Notification Model in CDI 2.0](https://www.baeldung.com/cdi-event-notification)

27
cdi/pom.xml
View File

@ -2,10 +2,10 @@
<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>cdi</artifactId>
<version>1.0-SNAPSHOT</version>
<name>cdi</name>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-spring-4</artifactId>
@ -14,6 +14,16 @@
</parent>
<dependencies>
<dependency>
<groupId>javax.enterprise</groupId>
<artifactId>cdi-api</artifactId>
<version>${cdi-api.version}</version>
</dependency>
<dependency>
<groupId>org.jboss.weld.se</groupId>
<artifactId>weld-se-core</artifactId>
<version>${weld-se-core.version}</version>
</dependency>
<dependency>
<groupId>org.hamcrest</groupId>
<artifactId>hamcrest-core</artifactId>
@ -42,11 +52,6 @@
<artifactId>aspectjweaver</artifactId>
<version>${aspectjweaver.version}</version>
</dependency>
<dependency>
<groupId>org.jboss.weld.se</groupId>
<artifactId>weld-se-core</artifactId>
<version>${weld-se-core.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
@ -54,13 +59,13 @@
<scope>test</scope>
</dependency>
</dependencies>
<properties>
<aspectjweaver.version>1.8.9</aspectjweaver.version>
<weld-se-core.version>2.4.1.Final</weld-se-core.version>
<cdi-api.version>2.0.SP1</cdi-api.version>
<weld-se-core.version>3.0.5.Final</weld-se-core.version>
<aspectjweaver.version>1.9.2</aspectjweaver.version>
<hamcrest-core.version>1.3</hamcrest-core.version>
<assertj-core.version>3.10.0</assertj-core.version>
<junit.version>4.12</junit.version>
<spring.version>5.1.2.RELEASE</spring.version>
</properties>
</project>

15
cdi/src/main/java/com/baeldung/cdi2observers/application/BootstrappingApplication.java Normal file
View File

@ -0,0 +1,15 @@
package com.baeldung.cdi.cdi2observers.application;
import com.baeldung.cdi.cdi2observers.events.ExampleEvent;
import javax.enterprise.inject.se.SeContainer;
import javax.enterprise.inject.se.SeContainerInitializer;
public class BootstrappingApplication {
public static void main(String... args) {
SeContainerInitializer containerInitializer = SeContainerInitializer.newInstance();
try (SeContainer container = containerInitializer.initialize()) {
container.getBeanManager().fireEvent(new ExampleEvent("Welcome to Baeldung!"));
}
}
}

14
cdi/src/main/java/com/baeldung/cdi2observers/events/ExampleEvent.java Normal file
View File

@ -0,0 +1,14 @@
package com.baeldung.cdi.cdi2observers.events;
public class ExampleEvent {
private final String eventMessage;
public ExampleEvent(String eventMessage) {
this.eventMessage = eventMessage;
}
public String getEventMessage() {
return eventMessage;
}
}

14
cdi/src/main/java/com/baeldung/cdi2observers/events/ExampleEventSource.java Normal file
View File

@ -0,0 +1,14 @@
package com.baeldung.cdi.cdi2observers.events;
import javax.enterprise.event.Event;
import javax.inject.Inject;
public class ExampleEventSource {
@Inject
Event<ExampleEvent> exampleEvent;
public void fireEvent() {
exampleEvent.fireAsync(new ExampleEvent("Welcome to Baeldung!"));
}
}

12
cdi/src/main/java/com/baeldung/cdi2observers/observers/AnotherExampleEventObserver.java Normal file
View File

@ -0,0 +1,12 @@
package com.baeldung.cdi.cdi2observers.observers;
import com.baeldung.cdi.cdi2observers.events.ExampleEvent;
import javax.annotation.Priority;
import javax.enterprise.event.Observes;
public class AnotherExampleEventObserver {
public String onEvent(@Observes @Priority(2) ExampleEvent event) {
return event.getEventMessage();
}
}

13
cdi/src/main/java/com/baeldung/cdi2observers/observers/ExampleEventObserver.java Normal file
View File

@ -0,0 +1,13 @@
package com.baeldung.cdi.cdi2observers.observers;
import com.baeldung.cdi.cdi2observers.events.ExampleEvent;
import com.baeldung.cdi.cdi2observers.services.TextService;
import javax.annotation.Priority;
import javax.enterprise.event.Observes;
public class ExampleEventObserver {
public String onEvent(@Observes @Priority(1) ExampleEvent event, TextService textService) {
return textService.parseText(event.getEventMessage());
}
}

8
cdi/src/main/java/com/baeldung/cdi2observers/services/TextService.java Normal file
View File

@ -0,0 +1,8 @@
package com.baeldung.cdi.cdi2observers.services;
public class TextService {
public String parseText(String text) {
return text.toUpperCase();
}
}

14
cdi/src/test/java/com/baeldung/test/cdi2observers/tests/TextServiceUnitTest.java Normal file
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@ -0,0 +1,14 @@
package com.baeldung.cdi.cdi2observers.tests;
import com.baeldung.cdi.cdi2observers.services.TextService;
import static org.assertj.core.api.Assertions.assertThat;
import org.junit.Test;
public class TextServiceUnitTest {
@Test
public void givenTextServiceInstance_whenCalledparseText_thenCorrect() {
TextService textService = new TextService();
assertThat(textService.parseText("Baeldung")).isEqualTo("BAELDUNG");
}
}

1
core-groovy/pom.xml
View File

@ -4,6 +4,7 @@
<modelVersion>4.0.0</modelVersion>
<artifactId>core-groovy</artifactId>
<version>1.0-SNAPSHOT</version>
<name>core-groovy</name>
<packaging>jar</packaging>
<parent>

1
core-java-10/README.md
View File

@ -4,3 +4,4 @@
- [Java 10 LocalVariable Type-Inference](http://www.baeldung.com/java-10-local-variable-type-inference)
- [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)

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

@ -33,3 +33,4 @@
- [An Overview of Regular Expressions Performance in Java](https://www.baeldung.com/java-regex-performance)
- [Java Primitives versus Objects](https://www.baeldung.com/java-primitives-vs-objects)
- [How to Use if/else Logic in Java 8 Streams](https://www.baeldung.com/java-8-streams-if-else-logic)
- [How to Replace Many if Statements in Java](https://www.baeldung.com/java-replace-if-statements)

17
core-java-8/src/main/java/com/baeldung/reducingIfElse/AddCommand.java Normal file
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@ -0,0 +1,17 @@
package com.baeldung.reducingIfElse;
public class AddCommand implements Command {
private int a;
private int b;
public AddCommand(int a, int b) {
this.a = a;
this.b = b;
}
@Override
public Integer execute() {
return a + b;
}
}

21
core-java-8/src/main/java/com/baeldung/reducingIfElse/AddRule.java Normal file
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@ -0,0 +1,21 @@
package com.baeldung.reducingIfElse;
public class AddRule implements Rule {
private int result;
@Override
public boolean evaluate(Expression expression) {
boolean evalResult = false;
if (expression.getOperator() == Operator.ADD) {
this.result = expression.getX() + expression.getY();
evalResult = true;
}
return evalResult;
}
@Override
public Result getResult() {
return new Result(result);
}
}

8
core-java-8/src/main/java/com/baeldung/reducingIfElse/Addition.java Normal file
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@ -0,0 +1,8 @@
package com.baeldung.reducingIfElse;
public class Addition implements Operation {
@Override
public int apply(int a, int b) {
return a + b;
}
}

83
core-java-8/src/main/java/com/baeldung/reducingIfElse/Calculator.java Normal file
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@ -0,0 +1,83 @@
package com.baeldung.reducingIfElse;
public class Calculator {
public int calculate(int a, int b, String operator) {
int result = Integer.MIN_VALUE;
if ("add".equals(operator)) {
result = a + b;
} else if ("multiply".equals(operator)) {
result = a * b;
} else if ("divide".equals(operator)) {
result = a / b;
} else if ("subtract".equals(operator)) {
result = a - b;
} else if ("modulo".equals(operator)) {
result = a % b;
}
return result;
}
public int calculateUsingSwitch(int a, int b, String operator) {
int result = 0;
switch (operator) {
case "add":
result = a + b;
break;
case "multiply":
result = a * b;
break;
case "divide":
result = a / b;
break;
case "subtract":
result = a - b;
break;
case "modulo":
result = a % b;
break;
default:
result = Integer.MIN_VALUE;
}
return result;
}
public int calculateUsingSwitch(int a, int b, Operator operator) {
int result = 0;
switch (operator) {
case ADD:
result = a + b;
break;
case MULTIPLY:
result = a * b;
break;
case DIVIDE:
result = a / b;
break;
case SUBTRACT:
result = a - b;
break;
case MODULO:
result = a % b;
break;
default:
result = Integer.MIN_VALUE;
}
return result;
}
public int calculate(int a, int b, Operator operator) {
return operator.apply(a, b);
}
public int calculateUsingFactory(int a, int b, String operation) {
Operation targetOperation = OperatorFactory.getOperation(operation)
.orElseThrow(() -> new IllegalArgumentException("Invalid Operator"));
return targetOperation.apply(a, b);
}
public int calculate(Command command) {
return command.execute();
}
}

5
core-java-8/src/main/java/com/baeldung/reducingIfElse/Command.java Normal file
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@ -0,0 +1,5 @@
package com.baeldung.reducingIfElse;
public interface Command {
Integer execute();
}

7
core-java-8/src/main/java/com/baeldung/reducingIfElse/Division.java Normal file
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@ -0,0 +1,7 @@
package com.baeldung.reducingIfElse;
public class Division implements Operation {
@Override public int apply(int a, int b) {
return a / b;
}
}

26
core-java-8/src/main/java/com/baeldung/reducingIfElse/Expression.java Normal file
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@ -0,0 +1,26 @@
package com.baeldung.reducingIfElse;
public class Expression {
private Integer x;
private Integer y;
private Operator operator;
public Expression(Integer x, Integer y, Operator operator) {
this.x = x;
this.y = y;
this.operator = operator;
}
public Integer getX() {
return x;
}
public Integer getY() {
return y;
}
public Operator getOperator() {
return operator;
}
}

7
core-java-8/src/main/java/com/baeldung/reducingIfElse/Modulo.java Normal file
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@ -0,0 +1,7 @@
package com.baeldung.reducingIfElse;
public class Modulo implements Operation {
@Override public int apply(int a, int b) {
return a % b;
}
}

7
core-java-8/src/main/java/com/baeldung/reducingIfElse/Multiplication.java Normal file
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@ -0,0 +1,7 @@
package com.baeldung.reducingIfElse;
public class Multiplication implements Operation {
@Override public int apply(int a, int b) {
return 0;
}
}

5
core-java-8/src/main/java/com/baeldung/reducingIfElse/Operation.java Normal file
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@ -0,0 +1,5 @@
package com.baeldung.reducingIfElse;
public interface Operation {
int apply(int a, int b);
}

41
core-java-8/src/main/java/com/baeldung/reducingIfElse/Operator.java Normal file
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@ -0,0 +1,41 @@
package com.baeldung.reducingIfElse;
public enum Operator {
ADD {
@Override
public int apply(int a, int b) {
return a + b;
}
},
MULTIPLY {
@Override
public int apply(int a, int b) {
return a * b;
}
},
SUBTRACT {
@Override
public int apply(int a, int b) {
return a - b;
}
},
DIVIDE {
@Override
public int apply(int a, int b) {
return a / b;
}
},
MODULO {
@Override
public int apply(int a, int b) {
return a % b;
}
};
public abstract int apply(int a, int b);
}

21
core-java-8/src/main/java/com/baeldung/reducingIfElse/OperatorFactory.java Normal file
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@ -0,0 +1,21 @@
package com.baeldung.reducingIfElse;
import java.util.HashMap;
import java.util.Map;
import java.util.Optional;
public class OperatorFactory {
static Map<String, Operation> operationMap = new HashMap<>();
static {
operationMap.put("add", new Addition());
operationMap.put("divide", new Division());
operationMap.put("multiply", new Multiplication());
operationMap.put("subtract", new Subtraction());
operationMap.put("modulo", new Modulo());
}
public static Optional<Operation> getOperation(String operation) {
return Optional.ofNullable(operationMap.get(operation));
}
}

13
core-java-8/src/main/java/com/baeldung/reducingIfElse/Result.java Normal file
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@ -0,0 +1,13 @@
package com.baeldung.reducingIfElse;
public class Result {
int value;
public Result(int value) {
this.value = value;
}
public int getValue() {
return value;
}
}

8
core-java-8/src/main/java/com/baeldung/reducingIfElse/Rule.java Normal file
View File

@ -0,0 +1,8 @@
package com.baeldung.reducingIfElse;
public interface Rule {
boolean evaluate(Expression expression);
Result getResult();
}

24
core-java-8/src/main/java/com/baeldung/reducingIfElse/RuleEngine.java Normal file
View File

@ -0,0 +1,24 @@
package com.baeldung.reducingIfElse;
import java.util.ArrayList;
import java.util.List;
import java.util.Optional;
import java.util.stream.Collectors;
public class RuleEngine {
private static List<Rule> rules = new ArrayList<>();
static {
rules.add(new AddRule());
}
public Result process(Expression expression) {
Rule rule = rules.stream()
.filter(r -> r.evaluate(expression))
.findFirst()
.orElseThrow(() -> new IllegalArgumentException("Expression does not matches any Rule"));
return rule.getResult();
}
}

7
core-java-8/src/main/java/com/baeldung/reducingIfElse/Subtraction.java Normal file
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@ -0,0 +1,7 @@
package com.baeldung.reducingIfElse;
public class Subtraction implements Operation {
@Override public int apply(int a, int b) {
return a - b;
}
}

32
core-java-8/src/test/java/com/baeldung/reduceIfelse/CalculatorUnitTest.java Normal file
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@ -0,0 +1,32 @@
package com.baeldung.reduceIfelse;
import com.baeldung.reducingIfElse.AddCommand;
import com.baeldung.reducingIfElse.Calculator;
import com.baeldung.reducingIfElse.Operator;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
public class CalculatorUnitTest {
@Test
public void whenCalculateUsingStringOperator_thenReturnCorrectResult() {
Calculator calculator = new Calculator();
int result = calculator.calculate(3, 4, "add");
assertEquals(7, result);
}
@Test
public void whenCalculateUsingEnumOperator_thenReturnCorrectResult() {
Calculator calculator = new Calculator();
int result = calculator.calculate(3, 4, Operator.valueOf("ADD"));
assertEquals(7, result);
}
@Test
public void whenCalculateUsingCommand_thenReturnCorrectResult() {
Calculator calculator = new Calculator();
int result = calculator.calculate(new AddCommand(3, 7));
assertEquals(10, result);
}
}

23
core-java-8/src/test/java/com/baeldung/reduceIfelse/RuleEngineUnitTest.java Normal file
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@ -0,0 +1,23 @@
package com.baeldung.reduceIfelse;
import com.baeldung.reducingIfElse.Expression;
import com.baeldung.reducingIfElse.Operator;
import com.baeldung.reducingIfElse.Result;
import com.baeldung.reducingIfElse.RuleEngine;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
public class RuleEngineUnitTest {
@Test
public void whenNumbersGivenToRuleEngine_thenReturnCorrectResult() {
Expression expression = new Expression(5, 5, Operator.ADD);
RuleEngine engine = new RuleEngine();
Result result = engine.process(expression);
assertNotNull(result);
assertEquals(10, result.getValue());
}
}

1
core-java-9/pom.xml
View File

@ -1,7 +1,6 @@
<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-9</artifactId>
<version>0.2-SNAPSHOT</version>
<name>core-java-9</name>

25
core-java-arrays/.gitignore vendored Normal file
View File

@ -0,0 +1,25 @@
*.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
backup-pom.xml
/bin/
/temp
#IntelliJ specific
.idea/
*.iml

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

@ -0,0 +1,15 @@
=========
## Core Java Arrays Cookbooks and Examples
### Relevant Articles:
- [How to Copy an Array in Java](http://www.baeldung.com/java-array-copy)
- [Check if a Java Array Contains a Value](http://www.baeldung.com/java-array-contains-value)
- [Initializing Arrays in Java](http://www.baeldung.com/java-initialize-array)
- [Guide to the java.util.Arrays Class](http://www.baeldung.com/java-util-arrays)
- [Jagged Arrays In Java](http://www.baeldung.com/java-jagged-arrays)
- [Find Sum and Average in a Java Array](http://www.baeldung.com/java-array-sum-average)
- [Arrays in Java: A Reference Guide](https://www.baeldung.com/java-arrays-guide)
- [How to Invert an Array in Java](http://www.baeldung.com/java-invert-array)
- [Array Operations in Java](http://www.baeldung.com/java-common-array-operations)

412
core-java-arrays/pom.xml Normal file
View File

@ -0,0 +1,412 @@
<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-arrays</artifactId>
<version>0.1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<name>core-java-arrays</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-lang3</artifactId>
<version>${commons-lang3.version}</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>${log4j.version}</version>
</dependency>
<dependency> <!-- needed to bridge to slf4j for projects that use the log4j APIs directly -->
<groupId>org.slf4j</groupId>
<artifactId>log4j-over-slf4j</artifactId>
<version>${org.slf4j.version}</version>
</dependency>
<!-- test scoped -->
<dependency>
<groupId>org.assertj</groupId>
<artifactId>assertj-core</artifactId>
<version>${assertj-core.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.openjdk.jmh</groupId>
<artifactId>jmh-core</artifactId>
<version>${jmh-core.version}</version>
</dependency>
<dependency>
<groupId>org.openjdk.jmh</groupId>
<artifactId>jmh-generator-annprocess</artifactId>
<version>${jmh-generator-annprocess.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${springframework.spring-web.version}</version>
</dependency>
</dependencies>
<build>
<finalName>core-java-arrays</finalName>
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
</resource>
</resources>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<configuration>
<excludes>
<exclude>**/*LiveTest.java</exclude>
<exclude>**/*IntegrationTest.java</exclude>
<exclude>**/*IntTest.java</exclude>
<exclude>**/*LongRunningUnitTest.java</exclude>
<exclude>**/*ManualTest.java</exclude>
</excludes>
<testFailureIgnore>true</testFailureIgnore>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<executions>
<execution>
<id>copy-dependencies</id>
<phase>prepare-package</phase>
<goals>
<goal>copy-dependencies</goal>
</goals>
<configuration>
<outputDirectory>${project.build.directory}/libs</outputDirectory>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>${maven-jar-plugin.version}</version>
<configuration>
<archive>
<manifest>
<addClasspath>true</addClasspath>
<classpathPrefix>libs/</classpathPrefix>
<mainClass>org.baeldung.executable.ExecutableMavenJar</mainClass>
</manifest>
</archive>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
<configuration>
<archiveBaseDirectory>${project.basedir}</archiveBaseDirectory>
<archive>
<manifest>
<mainClass>org.baeldung.executable.ExecutableMavenJar</mainClass>
</manifest>
</archive>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>${maven-shade-plugin.version}</version>
<executions>
<execution>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<shadedArtifactAttached>true</shadedArtifactAttached>
<transformers>
<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<mainClass>org.baeldung.executable.ExecutableMavenJar</mainClass>
</transformer>
</transformers>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>com.jolira</groupId>
<artifactId>onejar-maven-plugin</artifactId>
<version>${onejar-maven-plugin.version}</version>
<executions>
<execution>
<configuration>
<mainClass>org.baeldung.executable.ExecutableMavenJar</mainClass>
<attachToBuild>true</attachToBuild>
<filename>${project.build.finalName}-onejar.${project.packaging}</filename>
</configuration>
<goals>
<goal>one-jar</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<version>${spring-boot-maven-plugin.version}</version>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
<configuration>
<classifier>spring-boot</classifier>
<mainClass>org.baeldung.executable.ExecutableMavenJar</mainClass>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>${exec-maven-plugin.version}</version>
<configuration>
<executable>java</executable>
<mainClass>com.baeldung.outofmemoryerror.OutOfMemoryGCLimitExceed</mainClass>
<arguments>
<argument>-Xmx300m</argument>
<argument>-XX:+UseParallelGC</argument>
<argument>-classpath</argument>
<classpath />
<argument>com.baeldung.outofmemoryerror.OutOfMemoryGCLimitExceed</argument>
</arguments>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-javadoc-plugin</artifactId>
<version>${maven-javadoc-plugin.version}</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
<profiles>
<profile>
<id>integration</id>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<executions>
<execution>
<phase>integration-test</phase>
<goals>
<goal>test</goal>
</goals>
<configuration>
<excludes>
<exclude>**/*ManualTest.java</exclude>
</excludes>
<includes>
<include>**/*IntegrationTest.java</include>
<include>**/*IntTest.java</include>
</includes>
</configuration>
</execution>
</executions>
<configuration>
<systemPropertyVariables>
<test.mime>json</test.mime>
</systemPropertyVariables>
</configuration>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>${exec-maven-plugin.version}</version>
<executions>
<execution>
<id>run-benchmarks</id>
<!-- <phase>integration-test</phase> -->
<phase>none</phase>
<goals>
<goal>exec</goal>
</goals>
<configuration>
<classpathScope>test</classpathScope>
<executable>java</executable>
<arguments>
<argument>-classpath</argument>
<classpath />
<argument>org.openjdk.jmh.Main</argument>
<argument>.*</argument>
</arguments>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</profile>
<!-- java instrumentation profiles to build jars -->
<profile>
<id>buildAgentLoader</id>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>jar</goal>
</goals>
<configuration>
<classifier>agentLoader</classifier>
<classesDirectory>target/classes</classesDirectory>
<archive>
<manifest>
<addClasspath>true</addClasspath>
</manifest>
<manifestFile>${project.build.outputDirectory}/META-INF/MANIFEST.MF</manifestFile>
</archive>
<includes>
<include>com/baeldung/instrumentation/application/AgentLoader.class</include>
<include>com/baeldung/instrumentation/application/Launcher.class</include>
</includes>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</profile>
<profile>
<id>buildApplication</id>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>jar</goal>
</goals>
<configuration>
<classifier>application</classifier>
<classesDirectory>target/classes</classesDirectory>
<archive>
<manifest>
<addClasspath>true</addClasspath>
</manifest>
<manifestFile>${project.build.outputDirectory}/META-INF/MANIFEST.MF</manifestFile>
</archive>
<includes>
<include>com/baeldung/instrumentation/application/MyAtm.class</include>
<include>com/baeldung/instrumentation/application/MyAtmApplication.class</include>
<include>com/baeldung/instrumentation/application/Launcher.class</include>
</includes>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</profile>
<profile>
<id>buildAgent</id>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>jar</goal>
</goals>
<configuration>
<classifier>agent</classifier>
<classesDirectory>target/classes</classesDirectory>
<archive>
<manifest>
<addClasspath>true</addClasspath>
</manifest>
<manifestFile>${project.build.outputDirectory}/META-INF/MANIFEST.MF</manifestFile>
</archive>
<includes>
<include>com/baeldung/instrumentation/agent/AtmTransformer.class</include>
<include>com/baeldung/instrumentation/agent/MyInstrumentationAgent.class</include>
</includes>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</profile>
</profiles>
<properties>
<!-- util -->
<commons-lang3.version>3.8.1</commons-lang3.version>
<lombok.version>1.16.12</lombok.version>
<jmh-core.version>1.19</jmh-core.version>
<jmh-generator-annprocess.version>1.19</jmh-generator-annprocess.version>
<!-- testing -->
<assertj-core.version>3.10.0</assertj-core.version>
<!-- maven and spring plugins -->
<maven-surefire-plugin.version>2.21.0</maven-surefire-plugin.version>
<springframework.spring-web.version>4.3.4.RELEASE</springframework.spring-web.version>
<maven-javadoc-plugin.version>3.0.0-M1</maven-javadoc-plugin.version>
<maven-jar-plugin.version>3.0.2</maven-jar-plugin.version>
<onejar-maven-plugin.version>1.4.4</onejar-maven-plugin.version>
<maven-shade-plugin.version>3.1.1</maven-shade-plugin.version>
<spring-boot-maven-plugin.version>2.0.3.RELEASE</spring-boot-maven-plugin.version>
<exec-maven-plugin.version>1.6.0</exec-maven-plugin.version>
</properties>
</project>

0
core-java/src/main/java/com/baeldung/array/ArrayBenchmarkRunner.java → core-java-arrays/src/main/java/com/baeldung/array/ArrayBenchmarkRunner.java
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2
core-java/src/main/java/com/baeldung/array/ArrayInitializer.java → core-java-arrays/src/main/java/com/baeldung/array/ArrayInitializer.java
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@ -2,7 +2,7 @@ package com.baeldung.array;
import java.util.Arrays;
import org.apache.commons.lang.ArrayUtils;
import org.apache.commons.lang3.ArrayUtils;
public class ArrayInitializer {

0
core-java/src/main/java/com/baeldung/array/ArrayInverter.java → core-java-arrays/src/main/java/com/baeldung/array/ArrayInverter.java
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0
core-java/src/main/java/com/baeldung/array/ArrayReferenceGuide.java → core-java-arrays/src/main/java/com/baeldung/array/ArrayReferenceGuide.java
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0
core-java/src/main/java/com/baeldung/array/Find2ndLargestInArray.java → core-java-arrays/src/main/java/com/baeldung/array/Find2ndLargestInArray.java
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0
core-java/src/main/java/com/baeldung/array/FindElementInArray.java → core-java-arrays/src/main/java/com/baeldung/array/FindElementInArray.java
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0
core-java/src/main/java/com/baeldung/array/JaggedArray.java → core-java-arrays/src/main/java/com/baeldung/array/JaggedArray.java
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0
core-java/src/main/java/com/baeldung/array/SearchArrayUnitTest.java → core-java-arrays/src/main/java/com/baeldung/array/SearchArrayUnitTest.java
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0
core-java/src/main/java/com/baeldung/array/SumAndAverageInArray.java → core-java-arrays/src/main/java/com/baeldung/array/SumAndAverageInArray.java
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14
core-java-collections/src/main/java/com/baeldung/array/operations/ArrayOperations.java → core-java-arrays/src/main/java/com/baeldung/array/operations/ArrayOperations.java
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@ -4,11 +4,13 @@ import java.lang.reflect.Array;
import java.util.Arrays;
import java.util.HashSet;
import java.util.LinkedHashSet;
import java.util.LinkedList;
import java.util.Random;
import java.util.Set;
import java.util.function.Function;
import java.util.function.IntPredicate;
import java.util.function.Predicate;
import java.util.stream.Stream;
import org.apache.commons.lang3.ArrayUtils;
@ -194,4 +196,16 @@ public class ArrayOperations {
public static <T> T getRandomFromObjectArray(T[] array) {
return array[new Random().nextInt(array.length)];
}
public static Integer[] intersectionSimple(final Integer[] a, final Integer[] b){
return Stream.of(a).filter(Arrays.asList(b)::contains).toArray(Integer[]::new);
}
public static Integer[] intersectionSet(final Integer[] a, final Integer[] b){
return Stream.of(a).filter(Arrays.asList(b)::contains).distinct().toArray(Integer[]::new);
}
public static Integer[] intersectionMultiSet(final Integer[] a, final Integer[] b){
return Stream.of(a).filter(new LinkedList<>(Arrays.asList(b))::remove).toArray(Integer[]::new);
}
}

0
core-java/src/main/java/com/baeldung/arraycopy/model/Address.java → core-java-arrays/src/main/java/com/baeldung/arraycopy/model/Address.java
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0
core-java/src/main/java/com/baeldung/arraycopy/model/Employee.java → core-java-arrays/src/main/java/com/baeldung/arraycopy/model/Employee.java
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0
core-java/src/test/java/com/baeldung/array/ArrayInitializerUnitTest.java → core-java-arrays/src/test/java/com/baeldung/array/ArrayInitializerUnitTest.java
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0
core-java/src/test/java/com/baeldung/array/ArrayInverterUnitTest.java → core-java-arrays/src/test/java/com/baeldung/array/ArrayInverterUnitTest.java
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0
core-java/src/test/java/com/baeldung/array/Find2ndLargestInArrayUnitTest.java → core-java-arrays/src/test/java/com/baeldung/array/Find2ndLargestInArrayUnitTest.java
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0
core-java/src/test/java/com/baeldung/array/FindElementInArrayUnitTest.java → core-java-arrays/src/test/java/com/baeldung/array/FindElementInArrayUnitTest.java
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0
core-java/src/test/java/com/baeldung/array/JaggedArrayUnitTest.java → core-java-arrays/src/test/java/com/baeldung/array/JaggedArrayUnitTest.java
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0
core-java/src/test/java/com/baeldung/array/SumAndAverageInArrayUnitTest.java → core-java-arrays/src/test/java/com/baeldung/array/SumAndAverageInArrayUnitTest.java
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0
core-java-collections/src/test/java/com/baeldung/array/operations/ArrayOperationsUnitTest.java → core-java-arrays/src/test/java/com/baeldung/array/operations/ArrayOperationsUnitTest.java
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66
core-java-arrays/src/test/java/com/baeldung/array/operations/IntersectionUnitTest.java Normal file
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@ -0,0 +1,66 @@
package com.baeldung.array.operations;
import org.junit.jupiter.api.Test;
import static com.baeldung.array.operations.ArrayOperations.intersectionMultiSet;
import static com.baeldung.array.operations.ArrayOperations.intersectionSet;
import static com.baeldung.array.operations.ArrayOperations.intersectionSimple;
import static org.assertj.core.api.Assertions.assertThat;
class IntersectionUnitTest {
private static final Integer[] a = { 1, 3, 2 };
private static final Integer[] b = { 4, 3, 2, 4, 2, 3, 4, 4, 3 };
private static final Integer[] c = { 1, 3, 2, 3, 3, 2 };
@Test
void whenIntersectionSimpleIsUsed_thenCommonEntriesAreInTheResult() {
assertThat(intersectionSimple(a, b)).isEqualTo(new Integer[] { 3, 2 });
assertThat(intersectionSimple(b, a)).isEqualTo(new Integer[] { 3, 2, 2, 3, 3 });
}
@Test
void whenIntersectionSimpleIsUsedWithAnArrayAndItself_thenTheResultIsTheIdentity() {
assertThat(intersectionSimple(b, b)).isEqualTo(b);
assertThat(intersectionSimple(a, a)).isEqualTo(a);
}
@Test
void whenIntersectionSetIsUsed_thenCommonEntriesAreInTheResult() {
assertThat(intersectionSet(b, a)).isEqualTo(new Integer[] { 3, 2 });
}
@Test
void whenIntersectionSetIsUsed_thenTheNumberOfEntriesDoesNotChangeWithTheParameterOrder() {
assertThat(intersectionSet(a, b)).isEqualTo(new Integer[] { 3, 2 });
assertThat(intersectionSet(b, a)).isEqualTo(new Integer[] { 3, 2 });
}
@Test
void whenIntersectionSetIsUsedWithAnArrayAndWithItself_andTheInputHasNoDuplicateEntries_ThenTheResultIsTheIdentity() {
assertThat(intersectionSet(a, a)).isEqualTo(a);
}
@Test
void whenIntersectionSetIsUsedWithAnArrayAndWithItself_andTheInputHasDuplicateEntries_ThenTheResultIsNotTheIdentity() {
assertThat(intersectionSet(b, b)).isNotEqualTo(b);
}
@Test
void whenMultiSetIsUsed_thenCommonEntriesAreInTheResult() {
assertThat(intersectionMultiSet(b, a)).isEqualTo(new Integer[] { 3, 2 });
}
@Test
void whenIntersectionMultiSetIsUsed_thenTheNumberOfEntriesDoesNotChangeWithTheParameterOrder() {
assertThat(intersectionMultiSet(a, b)).isEqualTo(new Integer[] { 3, 2 });
assertThat(intersectionMultiSet(b, a)).isEqualTo(new Integer[] { 3, 2 });
assertThat(intersectionMultiSet(b, c)).isEqualTo(new Integer[] { 3, 2, 2, 3, 3 });
assertThat(intersectionMultiSet(c, b)).isEqualTo(new Integer[] { 3, 2, 3, 3, 2 });
}
@Test
void whenIntersectionMultiSetIsUsedWithAnArrayAndWithItself_ThenTheResultIsTheIdentity() {
assertThat(intersectionMultiSet(b, b)).isEqualTo(b);
assertThat(intersectionMultiSet(a, a)).isEqualTo(a);
}
}

0
core-java/src/test/java/com/baeldung/arraycopy/ArrayCopyUtilUnitTest.java → core-java-arrays/src/test/java/com/baeldung/arraycopy/ArrayCopyUtilUnitTest.java
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0
core-java/src/test/java/com/baeldung/arrays/ArraysUnitTest.java → core-java-arrays/src/test/java/com/baeldung/arrays/ArraysUnitTest.java
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12
core-java-collections/README.md
View File

@ -39,3 +39,15 @@
- [Operating on and Removing an Item from Stream](https://www.baeldung.com/java-use-remove-item-stream)
- [An Introduction to Synchronized Java Collections](https://www.baeldung.com/java-synchronized-collections)
- [Guide to EnumSet](https://www.baeldung.com/java-enumset)
- [Removing Elements from Java Collections](https://www.baeldung.com/java-collection-remove-elements)
- [Converting a Collection to ArrayList in Java](https://www.baeldung.com/java-convert-collection-arraylist)
- [Java 8 Streams: Find Items From One List Based On Values From Another List](https://www.baeldung.com/java-streams-find-list-items)
- [Combining Different Types of Collections in Java](https://www.baeldung.com/java-combine-collections)
- [Sorting in Java](http://www.baeldung.com/java-sorting)
- [A Guide to the Java LinkedList](http://www.baeldung.com/java-linkedlist)
- [Java List UnsupportedOperationException](http://www.baeldung.com/java-list-unsupported-operation-exception)
- [Join and Split Arrays and Collections in Java](http://www.baeldung.com/java-join-and-split)
- [Check If Two Lists are Equal in Java](http://www.baeldung.com/java-test-a-list-for-ordinality-and-equality)
- [Java List Initialization in One Line](https://www.baeldung.com/java-init-list-one-line)
- [ClassCastException: Arrays$ArrayList cannot be cast to ArrayList](https://www.baeldung.com/java-classcastexception-arrays-arraylist)
- [A Guide to EnumMap](https://www.baeldung.com/java-enum-map)

7
core-java-collections/pom.xml
View File

@ -56,6 +56,12 @@
<artifactId>commons-exec</artifactId>
<version>1.3</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>${lombok.version}</version>
<scope>provided</scope>
</dependency>
</dependencies>
<properties>
@ -67,5 +73,6 @@
<avaitility.version>1.7.0</avaitility.version>
<assertj.version>3.11.1</assertj.version>
<eclipse.collections.version>7.1.0</eclipse.collections.version>
<lombok.version>1.16.12</lombok.version>
</properties>
</project>

0
core-java/src/main/java/com/baeldung/classcastexception/ClassCastException.java → core-java-collections/src/main/java/com/baeldung/classcastexception/ClassCastException.java
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67
core-java-collections/src/main/java/com/baeldung/java/list/WaysToIterate.java Normal file
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@ -0,0 +1,67 @@
package com.baeldung.java.list;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;
import java.util.ListIterator;
/**
* Demonstrates the different ways to loop over
* the elements of a list.
*/
public class WaysToIterate {
List<String> countries = Arrays.asList("Germany", "Panama", "Australia");
/**
* Iterate over a list using a basic for loop
*/
public void iterateWithForLoop() {
for (int i = 0; i < countries.size(); i++) {
System.out.println(countries.get(i));
}
}
/**
* Iterate over a list using the enhanced for loop
*/
public void iterateWithEnhancedForLoop() {
for (String country : countries) {
System.out.println(country);
}
}
/**
* Iterate over a list using an Iterator
*/
public void iterateWithIterator() {
Iterator<String> countriesIterator = countries.iterator();
while(countriesIterator.hasNext()) {
System.out.println(countriesIterator.next());
}
}
/**
* Iterate over a list using a ListIterator
*/
public void iterateWithListIterator() {
ListIterator<String> listIterator = countries.listIterator();
while(listIterator.hasNext()) {
System.out.println(listIterator.next());
}
}
/**
* Iterate over a list using the Iterable.forEach() method
*/
public void iterateWithForEach() {
countries.forEach(System.out::println);
}
/**
* Iterate over a list using the Stream.forEach() method
*/
public void iterateWithStreamForEach() {
countries.stream().forEach((c) -> System.out.println(c));
}
}

71
core-java-collections/src/test/java/com/baeldung/java/list/WaysToIterateUnitTest.java Normal file
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@ -0,0 +1,71 @@
package com.baeldung.java.list;
import static org.junit.Assert.assertEquals;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;
import java.util.ListIterator;
import org.junit.Test;
public class WaysToIterateUnitTest {
List<String> globalCountries = new ArrayList<String>();
List<String> europeanCountries = Arrays.asList("Germany", "Panama", "Australia");
@Test
public void whenIteratingUsingForLoop_thenReturnThreeAsSizeOfList() {
for (int i = 0; i < europeanCountries.size(); i++) {
globalCountries.add(europeanCountries.get(i));
}
assertEquals(globalCountries.size(), 3);
globalCountries.clear();
}
@Test
public void whenIteratingUsingEnhancedForLoop_thenReturnThreeAsSizeOfList() {
for (String country : europeanCountries) {
globalCountries.add(country);
}
assertEquals(globalCountries.size(), 3);
globalCountries.clear();
}
@Test
public void whenIteratingUsingIterator_thenReturnThreeAsSizeOfList() {
Iterator<String> countriesIterator = europeanCountries.iterator();
while (countriesIterator.hasNext()) {
globalCountries.add(countriesIterator.next());
}
assertEquals(globalCountries.size(), 3);
globalCountries.clear();
}
@Test
public void whenIteratingUsingListIterator_thenReturnThreeAsSizeOfList() {
ListIterator<String> countriesIterator = europeanCountries.listIterator();
while (countriesIterator.hasNext()) {
globalCountries.add(countriesIterator.next());
}
assertEquals(globalCountries.size(), 3);
globalCountries.clear();
}
@Test
public void whenIteratingUsingForEach_thenReturnThreeAsSizeOfList() {
europeanCountries.forEach(country -> globalCountries.add(country));
assertEquals(globalCountries.size(), 3);
globalCountries.clear();
}
@Test
public void whenIteratingUsingStreamForEach_thenReturnThreeAsSizeOfList() {
europeanCountries.stream().forEach((country) -> globalCountries.add(country));
assertEquals(globalCountries.size(), 3);
globalCountries.clear();
}
}

0
core-java/src/test/java/com/baeldung/java/listInitialization/ListInitializationUnitTest.java → core-java-collections/src/test/java/com/baeldung/java/listInitialization/ListInitializationUnitTest.java
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0
core-java/src/test/java/org/baeldung/java/sorting/Employee.java → core-java-collections/src/test/java/org/baeldung/java/sorting/Employee.java
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0
core-java/src/test/java/org/baeldung/java/sorting/JavaSortingUnitTest.java → core-java-collections/src/test/java/org/baeldung/java/sorting/JavaSortingUnitTest.java
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33
core-java-concurrency/src/main/java/com/baeldung/concurrent/countdownlatch/CountdownLatchCountExample.java Normal file
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@ -0,0 +1,33 @@
package com.baeldung.concurrent.countdownlatch;
import java.util.concurrent.CountDownLatch;
public class CountdownLatchCountExample {
private int count;
public CountdownLatchCountExample(int count) {
this.count = count;
}
public boolean callTwiceInSameThread() {
CountDownLatch countDownLatch = new CountDownLatch(count);
Thread t = new Thread(() -> {
countDownLatch.countDown();
countDownLatch.countDown();
});
t.start();
try {
countDownLatch.await();
} catch (InterruptedException e) {
e.printStackTrace();
}
return countDownLatch.getCount() == 0;
}
public static void main(String[] args) {
CountdownLatchCountExample ex = new CountdownLatchCountExample(2);
System.out.println("Is CountDown Completed : " + ex.callTwiceInSameThread());
}
}

41
core-java-concurrency/src/main/java/com/baeldung/concurrent/countdownlatch/CountdownLatchResetExample.java Normal file
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@ -0,0 +1,41 @@
package com.baeldung.concurrent.countdownlatch;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.atomic.AtomicInteger;
public class CountdownLatchResetExample {
private int count;
private int threadCount;
private final AtomicInteger updateCount;
CountdownLatchResetExample(int count, int threadCount) {
updateCount = new AtomicInteger(0);
this.count = count;
this.threadCount = threadCount;
}
public int countWaits() {
CountDownLatch countDownLatch = new CountDownLatch(count);
ExecutorService es = Executors.newFixedThreadPool(threadCount);
for (int i = 0; i < threadCount; i++) {
es.execute(() -> {
long prevValue = countDownLatch.getCount();
countDownLatch.countDown();
if (countDownLatch.getCount() != prevValue) {
updateCount.incrementAndGet();
}
});
}
es.shutdown();
return updateCount.get();
}
public static void main(String[] args) {
CountdownLatchResetExample ex = new CountdownLatchResetExample(5, 20);
System.out.println("Count : " + ex.countWaits());
}
}

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