[JAVA-22519] Move articles from generic libraries module to specific library modules (#15416)

akka-modules/akka-actors/README.md

@@ -0,0 +1,7 @@
+## Akka HTTP
+
+This module contains articles about Akka actors. 
+
+### Relevant articles:
+
+- [Introduction to Akka Actors in Java](https://www.baeldung.com/akka-actors-java)

akka-modules/akka-actors/pom.xml

@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>akka-actors</artifactId>
+    <name>akka-actors</name>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>akka-modules</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>com.typesafe.akka</groupId>
+            <artifactId>akka-actor_${scala.version}</artifactId>
+            <version>${typesafe-akka.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.typesafe.akka</groupId>
+            <artifactId>akka-testkit_${scala.version}</artifactId>
+            <version>${typesafe-akka.version}</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <properties>
+        <typesafe-akka.version>2.5.11</typesafe-akka.version>
+    </properties>
+
+</project>

akka-modules/akka-actors/src/main/java/com/baeldung/akkaactors/FirstActor.java

@@ -1,4 +1,4 @@
-package com.baeldung.akka;
+package com.baeldung.akkaactors;
 
 import akka.actor.AbstractActor;
 import akka.actor.Props;

akka-modules/akka-actors/src/main/java/com/baeldung/akkaactors/MyActor.java

@@ -1,4 +1,4 @@
-package com.baeldung.akka;
+package com.baeldung.akkaactors;
 
 import akka.actor.AbstractActor;
 import akka.event.Logging;

akka-modules/akka-actors/src/main/java/com/baeldung/akkaactors/PrinterActor.java

@@ -1,4 +1,4 @@
-package com.baeldung.akka;
+package com.baeldung.akkaactors;
 
 import akka.actor.AbstractActor;
 import akka.actor.Props;

akka-modules/akka-actors/src/main/java/com/baeldung/akkaactors/ReadingActor.java

@@ -1,4 +1,4 @@
-package com.baeldung.akka;
+package com.baeldung.akkaactors;
 
 import akka.actor.AbstractActor;
 import akka.actor.ActorRef;

akka-modules/akka-actors/src/main/java/com/baeldung/akkaactors/WordCounterActor.java

@@ -1,4 +1,4 @@
-package com.baeldung.akka;
+package com.baeldung.akkaactors;
 
 import akka.actor.AbstractActor;
 import akka.event.Logging;

akka-modules/akka-actors/src/test/java/com/baeldung/akkaactors/AkkaActorsUnitTest.java

@@ -1,4 +1,4 @@
-package com.baeldung.akka;
+package com.baeldung.akkaactors;
 
 import akka.actor.ActorRef;
 import akka.actor.ActorSystem;

akka-modules/pom.xml

@@ -14,6 +14,7 @@
     </parent>
 
     <modules>
+        <module>akka-actors</module>
         <module>akka-http</module>
         <module>akka-streams</module>
         <module>spring-akka</module>

jmh/README.md

@@ -7,3 +7,4 @@ This module contains articles about the Java Microbenchmark Harness (JMH).
 - [Microbenchmarking with Java](https://www.baeldung.com/java-microbenchmark-harness)
 - [A Guide to False Sharing and @Contended](https://www.baeldung.com/java-false-sharing-contended)
 - [Performance Comparison of boolean[] vs BitSet](https://www.baeldung.com/java-boolean-array-bitset-performance)
+- [How to Warm Up the JVM](https://www.baeldung.com/java-jvm-warmup)

libraries-2/README.md

@@ -12,8 +12,7 @@ Remember, for advanced libraries like [Jackson](/jackson) and [JUnit](/testing-m
 - [Guide to Classgraph Library](https://www.baeldung.com/classgraph)
 - [Templating with Handlebars](https://www.baeldung.com/handlebars)
 - [A Guide to Crawler4j](https://www.baeldung.com/crawler4j)
-- [Key Value Store with Chronicle Map](https://www.baeldung.com/java-chronicle-map)
-- [Guide to MapDB](https://www.baeldung.com/mapdb)
 - [A Guide to Apache Mesos](https://www.baeldung.com/apache-mesos)
+- [Guide to MapDB](https://www.baeldung.com/mapdb)
 - More articles [[<-- prev]](/libraries) [[next -->]](/libraries-3)
 

libraries-2/pom.xml

@@ -13,11 +13,6 @@
     </parent>
 
     <dependencies>
-        <dependency>
-            <groupId>org.mapdb</groupId>
-            <artifactId>mapdb</artifactId>
-            <version>${mapdb.version}</version>
-        </dependency>
         <dependency>
             <groupId>io.github.classgraph</groupId>
             <artifactId>classgraph</artifactId>
@@ -41,17 +36,6 @@
             <artifactId>spring-boot-starter</artifactId>
             <version>${spring-boot-starter.version}</version>
         </dependency>
-        <dependency>
-            <groupId>net.openhft</groupId>
-            <artifactId>chronicle-map</artifactId>
-            <version>${chronicle.map.version}</version>
-            <exclusions>
-                <exclusion>
-                    <groupId>com.sun.java</groupId>
-                    <artifactId>tools</artifactId>
-                </exclusion>
-            </exclusions>
-        </dependency>
         <dependency>
             <groupId>edu.uci.ics</groupId>
             <artifactId>crawler4j</artifactId>
@@ -93,6 +77,11 @@
             <artifactId>je</artifactId>
             <version>18.3.12</version>
         </dependency>
+        <dependency>
+            <groupId>org.mapdb</groupId>
+            <artifactId>mapdb</artifactId>
+            <version>${mapdb.version}</version>
+        </dependency>
     </dependencies>
 
     <build>
@@ -100,10 +89,6 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-surefire-plugin</artifactId>
-                <version>${maven-surefire-plugin.version}</version>
-                <configuration>
-                    <argLine>--add-exports=java.base/jdk.internal.ref=ALL-UNNAMED --add-exports=java.base/sun.nio.ch=ALL-UNNAMED --add-exports=jdk.unsupported/sun.misc=ALL-UNNAMED --add-exports=jdk.compiler/com.sun.tools.javac.file=ALL-UNNAMED --add-opens=jdk.compiler/com.sun.tools.javac=ALL-UNNAMED --add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/java.lang.reflect=ALL-UNNAMED --add-opens=java.base/java.io=ALL-UNNAMED --add-opens=java.base/java.util=ALL-UNNAMED</argLine>
-                </configuration>
             </plugin>
         </plugins>
     </build>
@@ -112,7 +97,6 @@
         <mapdb.version>3.0.8</mapdb.version>
         <classgraph.version>4.8.153</classgraph.version>
         <jbpm.version>7.20.0.Final</jbpm.version>
-        <chronicle.map.version>3.24ea1</chronicle.map.version>
         <crawler4j.version>4.4.0</crawler4j.version>
         <spring-boot-starter.version>2.7.8</spring-boot-starter.version>
         <mesos.library.version>1.11.0</mesos.library.version>

libraries-2/src/test/java/com/baeldung/mapdb/CollectionsUnitTest.java

@@ -1,14 +1,14 @@
 package com.baeldung.mapdb;
 
+import static junit.framework.Assert.assertEquals;
+
+import java.util.NavigableSet;
+
 import org.junit.Test;
 import org.mapdb.DB;
 import org.mapdb.DBMaker;
 import org.mapdb.Serializer;
 
-import java.util.NavigableSet;
-
-import static junit.framework.Assert.assertEquals;
-
 public class CollectionsUnitTest {
 
     @Test

libraries-2/src/test/java/com/baeldung/mapdb/HTreeMapUnitTest.java

@@ -1,12 +1,12 @@
 package com.baeldung.mapdb;
 
-import org.jetbrains.annotations.NotNull;
+import static org.junit.jupiter.api.Assertions.assertEquals;
-import org.junit.Test;
-import org.mapdb.*;
 
-import java.io.IOException;
+import org.junit.jupiter.api.Test;
-
+import org.mapdb.DB;
-import static junit.framework.Assert.assertEquals;
+import org.mapdb.DBMaker;
+import org.mapdb.HTreeMap;
+import org.mapdb.Serializer;
 
 public class HTreeMapUnitTest {
 

libraries-2/src/test/java/com/baeldung/mapdb/HelloBaeldungUnitTest.java

@@ -1,25 +1,25 @@
 package com.baeldung.mapdb;
 
-import org.junit.Test;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.api.Test;
 import org.mapdb.DB;
 import org.mapdb.DBMaker;
 import org.mapdb.HTreeMap;
 
-import java.util.concurrent.ConcurrentMap;
-
-import static junit.framework.Assert.assertEquals;
-
 public class HelloBaeldungUnitTest {
 
     @Test
     public void givenInMemoryDBInstantiateCorrectly_whenDataSavedAndRetrieved_checkRetrievalCorrect() {
 
-        DB db = DBMaker.memoryDB().make();
+        DB db = DBMaker.memoryDB()
+            .make();
 
         String welcomeMessageKey = "Welcome Message";
         String welcomeMessageString = "Hello Baeldung!";
 
-        HTreeMap myMap = db.hashMap("myMap").createOrOpen();
+        HTreeMap myMap = db.hashMap("myMap")
+            .createOrOpen();
         myMap.put(welcomeMessageKey, welcomeMessageString);
 
         String welcomeMessageFromDB = (String) myMap.get(welcomeMessageKey);
@@ -32,12 +32,14 @@ public class HelloBaeldungUnitTest {
     @Test
     public void givenInFileDBInstantiateCorrectly_whenDataSavedAndRetrieved_checkRetrievalCorrect() {
 
-        DB db = DBMaker.fileDB("file.db").make();
+        DB db = DBMaker.fileDB("file.db")
+            .make();
 
         String welcomeMessageKey = "Welcome Message";
         String welcomeMessageString = "Hello Baeldung!";
 
-        HTreeMap myMap = db.hashMap("myMap").createOrOpen();
+        HTreeMap myMap = db.hashMap("myMap")
+            .createOrOpen();
         myMap.put(welcomeMessageKey, welcomeMessageString);
 
         String welcomeMessageFromDB = (String) myMap.get(welcomeMessageKey);

libraries-2/src/test/java/com/baeldung/mapdb/InMemoryModesUnitTest.java

@@ -1,13 +1,13 @@
 package com.baeldung.mapdb;
 
-import org.junit.Test;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.api.Test;
 import org.mapdb.DB;
 import org.mapdb.DBMaker;
 import org.mapdb.HTreeMap;
 import org.mapdb.Serializer;
 
-import static junit.framework.Assert.assertEquals;
-
 public class InMemoryModesUnitTest {
 
     @Test

libraries-2/src/test/java/com/baeldung/mapdb/SortedTableMapUnitTest.java

@@ -1,13 +1,13 @@
 package com.baeldung.mapdb;
 
-import org.junit.Test;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.api.Test;
 import org.mapdb.Serializer;
 import org.mapdb.SortedTableMap;
 import org.mapdb.volume.MappedFileVol;
 import org.mapdb.volume.Volume;
 
-import static junit.framework.Assert.assertEquals;
-
 public class SortedTableMapUnitTest {
 
     private static final String VOLUME_LOCATION = "sortedTableMapVol.db";

libraries-2/src/test/java/com/baeldung/mapdb/TransactionsUnitTest.java

@@ -1,13 +1,13 @@
 package com.baeldung.mapdb;
 
-import org.junit.Test;
+import static org.junit.jupiter.api.Assertions.assertEquals;
-import org.mapdb.DB;
-import org.mapdb.DBMaker;
-import org.mapdb.Serializer;
 
 import java.util.NavigableSet;
 
-import static junit.framework.Assert.assertEquals;
+import org.junit.jupiter.api.Test;
+import org.mapdb.DB;
+import org.mapdb.DBMaker;
+import org.mapdb.Serializer;
 
 public class TransactionsUnitTest {
 

libraries-3/README.md

@@ -8,10 +8,7 @@ The code examples related to different libraries are each in their own module.
 Remember, for advanced libraries like [Jackson](/jackson) and [JUnit](/testing-modules) we already have separate modules. Please make sure to have a look at the existing modules in such cases.
 
 ### Relevant Articles:
-- [Guide to the Cactoos Library](https://www.baeldung.com/java-cactoos)
-- [Introduction to cache2k](https://www.baeldung.com/java-cache2k)
 - [Introduction to the jcabi-aspects AOP Annotations Library](https://www.baeldung.com/java-jcabi-aspects)
-- [Introduction to Takes](https://www.baeldung.com/java-takes)
 - [Using NullAway to Avoid NullPointerExceptions](https://www.baeldung.com/java-nullaway)
 - [Introduction to Alibaba Arthas](https://www.baeldung.com/java-alibaba-arthas-intro)
 - [Intro to Structurizr](https://www.baeldung.com/structurizr)

libraries-3/pom.xml

@@ -18,17 +18,6 @@
             <artifactId>lombok</artifactId>
             <version>${lombok.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.cactoos</groupId>
-            <artifactId>cactoos</artifactId>
-            <version>${cactoos.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.cache2k</groupId>
-            <artifactId>cache2k-base-bom</artifactId>
-            <version>${cache2k.version}</version>
-            <type>pom</type>
-        </dependency>
         <dependency>
             <groupId>com.jcabi</groupId>
             <artifactId>jcabi-aspects</artifactId>
@@ -40,21 +29,6 @@
             <version>${aspectjrt.version}</version>
             <scope>runtime</scope>
         </dependency>
-        <dependency>
-            <groupId>org.takes</groupId>
-            <artifactId>takes</artifactId>
-            <version>${takes.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.apache.httpcomponents</groupId>
-            <artifactId>httpcore</artifactId>
-            <version>${httpcore.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.apache.httpcomponents</groupId>
-            <artifactId>httpclient</artifactId>
-            <version>${httpclient.version}</version>
-        </dependency>
         <dependency>
             <groupId>org.apache.velocity</groupId>
             <artifactId>velocity-engine-core</artifactId>
@@ -159,57 +133,13 @@
         </resources>
     </build>
 
-    <profiles>
-        <profile>
-            <id>reload</id>
-            <build>
-                <resources>
-                    <resource>
-                        <directory>src/main/resources</directory>
-                        <filtering>true</filtering>
-                    </resource>
-                    <resource>
-                        <directory>src/main/webapp</directory>
-                        <filtering>true</filtering>
-                    </resource>
-                </resources>
-                <plugins>
-                    <plugin>
-                        <groupId>org.codehaus.mojo</groupId>
-                        <artifactId>exec-maven-plugin</artifactId>
-                        <executions>
-                            <execution>
-                                <id>start-server</id>
-                                <phase>pre-integration-test</phase>
-                                <goals>
-                                    <goal>java</goal>
-                                </goals>
-                            </execution>
-                        </executions>
-                        <configuration>
-                            <mainClass>com.baeldung.takes.TakesApp</mainClass>
-                            <cleanupDaemonThreads>false</cleanupDaemonThreads>
-                            <arguments>
-                                <argument>--port=${port}</argument>
-                            </arguments>
-                        </configuration>
-                    </plugin>
-                </plugins>
-            </build>
-        </profile>
-    </profiles>
 
     <properties>
-        <cactoos.version>0.43</cactoos.version>
-        <cache2k.version>1.2.3.Final</cache2k.version>
         <jcabi-aspects.version>0.22.6</jcabi-aspects.version>
         <aspectjrt.version>1.9.20.1</aspectjrt.version>
         <jcabi-maven-plugin.version>0.14.1</jcabi-maven-plugin.version>
         <aspectjtools.version>1.9.20.1</aspectjtools.version>
         <aspectjweaver.version>1.9.20.1</aspectjweaver.version>
-        <takes.version>1.19</takes.version>
-        <httpcore.version>4.4.13</httpcore.version>
-        <httpclient.version>4.5.12</httpclient.version>
         <velocity-engine-core.version>2.2</velocity-engine-core.version>
         <nullaway.version>0.3.0</nullaway.version>
         <plexus-compiler.version>2.8</plexus-compiler.version>

libraries-4/README.md

@@ -8,11 +8,7 @@ The code examples related to different libraries are each in their own module.
 Remember, for advanced libraries like [Jackson](/jackson) and [JUnit](/testing-modules) we already have separate modules. Please make sure to have a look at the existing modules in such cases.
 
 ### Relevant articles
-- [Quick Guide to RSS with Rome](https://www.baeldung.com/rome-rss)
-- [Introduction to PCollections](https://www.baeldung.com/java-pcollections)
-- [Introduction to Eclipse Collections](https://www.baeldung.com/eclipse-collections)
 - [Introduction to NoException](https://www.baeldung.com/no-exception)
-- [Delete a Directory Recursively in Java](https://www.baeldung.com/java-delete-directory)
 - [Guide to JDeferred](https://www.baeldung.com/jdeferred)
 - [Introduction to MBassador](https://www.baeldung.com/mbassador)
 - [Using Pairs in Java](https://www.baeldung.com/java-pairs)

libraries-4/pom.xml

@@ -17,11 +17,6 @@
             <artifactId>jdeferred-core</artifactId>
             <version>${jdeferred.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.eclipse.collections</groupId>
-            <artifactId>eclipse-collections</artifactId>
-            <version>${eclipse-collections.version}</version>
-        </dependency>
         <dependency>
             <groupId>org.olap4j</groupId>
             <artifactId>olap4j</artifactId>
@@ -37,11 +32,6 @@
             <artifactId>noexception</artifactId>
             <version>${noexception.version}</version>
         </dependency>
-        <dependency>
-            <groupId>rome</groupId>
-            <artifactId>rome</artifactId>
-            <version>${rome.version}</version>
-        </dependency>
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-web</artifactId>
@@ -57,11 +47,6 @@
             <artifactId>servlet-api</artifactId>
             <version>${javax.servlet.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.pcollections</groupId>
-            <artifactId>pcollections</artifactId>
-            <version>${pcollections.version}</version>
-        </dependency>
         <dependency>
             <groupId>org.awaitility</groupId>
             <artifactId>awaitility</artifactId>
@@ -113,11 +98,6 @@
             <artifactId>commons-lang3</artifactId>
             <version>${commons-lang3.version}</version>
         </dependency>
-        <dependency>
-            <groupId>commons-io</groupId>
-            <artifactId>commons-io</artifactId>
-            <version>${commons-io.version}</version>
-        </dependency>
     </dependencies>
 
     <properties>
@@ -126,11 +106,9 @@
         <jdeferred.version>1.2.6</jdeferred.version>
         <noexception.version>1.1.0</noexception.version>
         <mbassador.version>1.3.1</mbassador.version>
-        <rome.version>1.0</rome.version>
         <spring.version>4.3.8.RELEASE</spring.version>
         <javax.servlet.version>2.5</javax.servlet.version>
         <javax.jdo.version>3.2.0-m7</javax.jdo.version>
-        <pcollections.version>2.1.2</pcollections.version>
         <awaitility.version>3.0.0</awaitility.version>
         <streamex.version>0.6.5</streamex.version>
         <javax.el.version>3.0.0</javax.el.version>
@@ -138,7 +116,6 @@
         <olap4j.version>1.2.0</olap4j.version>
         <javafx.version>19</javafx.version>
         <spoon-core.version>10.3.0</spoon-core.version>
-        <eclipse-collections.version>8.2.0</eclipse-collections.version>
         <vavr.version>0.9.0</vavr.version>
     </properties>
 

libraries-5/README.md

@@ -8,12 +8,8 @@ The code examples related to different libraries are each in their own module.
 Remember, for advanced libraries like [Jackson](/jackson) and [JUnit](/testing-modules) we already have separate modules. Please make sure to have a look at the existing modules in such cases.
 
 ### Relevant articles
-- [Introduction to Caffeine](https://www.baeldung.com/java-caching-caffeine)
 - [A Docker Guide for Java](https://www.baeldung.com/docker-java-api)
-- [Introduction to Akka Actors in Java](https://www.baeldung.com/akka-actors-java)
 - [Introduction to jOOL](https://www.baeldung.com/jool)
-- [Consumer Driven Contracts with Pact](https://www.baeldung.com/pact-junit-consumer-driven-contracts)
 - [Introduction to Atlassian Fugue](https://www.baeldung.com/java-fugue)
 - [Publish and Receive Messages with Nats Java Client](https://www.baeldung.com/nats-java-client)
-- [Java Concurrency Utility with JCTools](https://www.baeldung.com/java-concurrency-jc-tools)
 - More articles [[<-- prev]](/libraries-4) [[next -->]](/libraries-6)

libraries-5/pom.xml

@@ -6,49 +6,17 @@
     <artifactId>libraries-5</artifactId>
 
     <parent>
+        <artifactId>parent-modules</artifactId>
         <groupId>com.baeldung</groupId>
-        <artifactId>parent-boot-2</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
-        <version>0.0.1-SNAPSHOT</version>
-        <relativePath>../parent-boot-2</relativePath>
     </parent>
 
     <dependencies>
-        <dependency>
-            <groupId>org.springframework</groupId>
-            <artifactId>spring-web</artifactId>
-        </dependency>
         <dependency>
             <groupId>org.jooq</groupId>
             <artifactId>jool</artifactId>
             <version>${jool.version}</version>
         </dependency>
-        <dependency>
-            <groupId>au.com.dius</groupId>
-            <artifactId>pact-jvm-provider-junit5_2.12</artifactId>
-            <version>${pact.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>au.com.dius</groupId>
-            <artifactId>pact-jvm-consumer-junit5_2.12</artifactId>
-            <version>${pact.version}</version>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter-web</artifactId>
-        </dependency>
-        <!-- https://mvnrepository.com/artifact/com.typesafe.akka/akka-actor -->
-        <dependency>
-            <groupId>com.typesafe.akka</groupId>
-            <artifactId>akka-actor_${scala.version}</artifactId>
-            <version>${typesafe-akka.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>com.typesafe.akka</groupId>
-            <artifactId>akka-testkit_${scala.version}</artifactId>
-            <version>${typesafe-akka.version}</version>
-            <scope>test</scope>
-        </dependency>
         <!--Java Docker API Client -->
         <dependency>
             <groupId>com.github.docker-java</groupId>
@@ -69,18 +37,6 @@
                 </exclusion>
             </exclusions>
         </dependency>
-        <!--Java Docker API Client -->
-        <dependency>
-            <groupId>com.github.ben-manes.caffeine</groupId>
-            <artifactId>caffeine</artifactId>
-            <version>${caffeine.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>com.google.code.findbugs</groupId>
-            <artifactId>jsr305</artifactId>
-            <version>${findbugs.version}</version>
-            <scope>test</scope>
-        </dependency>
         <!-- Atlassian Fugue -->
         <dependency>
             <groupId>io.atlassian.fugue</groupId>
@@ -92,44 +48,14 @@
             <artifactId>jnats</artifactId>
             <version>${jnats.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.jctools</groupId>
-            <artifactId>jctools-core</artifactId>
-            <version>${jctools.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.openjdk.jmh</groupId>
-            <artifactId>jmh-core</artifactId>
-            <version>${jmh-core.version}</version>
-        </dependency>
     </dependencies>
 
-    <build>
-        <plugins>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-surefire-plugin</artifactId>
-                <configuration>
-                    <systemPropertyVariables>
-                        <pact.rootDir>target/mypacts</pact.rootDir>
-                    </systemPropertyVariables>
-                </configuration>
-            </plugin>
-        </plugins>
-    </build>
-
     <properties>
-        <pact.version>3.6.3</pact.version>
         <jool.version>0.9.12</jool.version>
-        <spring.version>4.3.8.RELEASE</spring.version>
         <scala.version>2.12</scala.version>
-        <typesafe-akka.version>2.5.11</typesafe-akka.version>
         <docker.version>3.0.14</docker.version>
-        <caffeine.version>3.1.8</caffeine.version>
-        <findbugs.version>3.0.2</findbugs.version>
         <fugue.version>4.5.1</fugue.version>
         <jnats.version>1.0</jnats.version>
-        <jctools.version>2.1.2</jctools.version>
     </properties>
 
 </project>

libraries-6/README.md

@@ -10,11 +10,9 @@ Remember, for advanced libraries like [Jackson](/jackson) and [JUnit](/testing-m
 ### Relevant articles
 - [Introduction to JavaPoet](https://www.baeldung.com/java-poet)
 - [Guide to Resilience4j](https://www.baeldung.com/resilience4j)
-- [Implementing a FTP-Client in Java](https://www.baeldung.com/java-ftp-client)
 - [Introduction to Functional Java](https://www.baeldung.com/java-functional-library)
 - [Guide to Simple Binary Encoding](https://www.baeldung.com/java-sbe)
 - [Java-R Integration](https://www.baeldung.com/java-r-integration)
 - [Using libphonenumber to Validate Phone Numbers](https://www.baeldung.com/java-libphonenumber)
 - [Apache Commons Collections vs Google Guava](https://www.baeldung.com/apache-commons-collections-vs-guava)
-- [Guide to Using ModelMapper](https://www.baeldung.com/java-modelmapper)
 - More articles [[<-- prev]](/libraries-5) [[next -->]](/libraries-7)

libraries-6/pom.xml

@@ -42,12 +42,6 @@
             <artifactId>javapoet</artifactId>
             <version>${javapoet.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.mockftpserver</groupId>
-            <artifactId>MockFtpServer</artifactId>
-            <version>${mockftpserver.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>org.apache.commons</groupId>
             <artifactId>commons-lang3</artifactId>
@@ -63,11 +57,6 @@
             <artifactId>guava</artifactId>
             <version>${guava.version}</version>
         </dependency>
-        <dependency>
-            <groupId>commons-net</groupId>
-            <artifactId>commons-net</artifactId>
-            <version>${commons-net.version}</version>
-        </dependency>
         <dependency>
             <groupId>commons-io</groupId>
             <artifactId>commons-io</artifactId>
@@ -95,11 +84,6 @@
             <artifactId>libphonenumber</artifactId>
             <version>${libphonenumber.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.modelmapper</groupId>
-            <artifactId>modelmapper</artifactId>
-            <version>${org.modelmapper.version}</version>
-        </dependency>
         <dependency>
             <groupId>org.agrona</groupId>
             <artifactId>agrona</artifactId>
@@ -190,15 +174,12 @@
 
     <properties>
         <javapoet.version>1.10.0</javapoet.version>
-        <mockftpserver.version>2.7.1</mockftpserver.version>
         <functionaljava.version>4.8.1</functionaljava.version>
         <resilience4j.version>2.1.0</resilience4j.version>
-        <commons-net.version>3.6</commons-net.version>
         <renjin.version>3.5-beta72</renjin.version>
         <rcaller.version>3.0</rcaller.version>
         <rserve.version>1.8.1</rserve.version>
         <libphonenumber.version>8.12.9</libphonenumber.version>
-        <org.modelmapper.version>3.2.0</org.modelmapper.version>
         <agrona.version>1.17.1</agrona.version>
         <exec-maven-plugin.version>1.6.0</exec-maven-plugin.version>
         <sbe-tool.version>1.27.0</sbe-tool.version>

libraries-ai/README.md

@@ -1,2 +1,3 @@
 ## Relevant Articles
 - [Overview of NLP Libraries in Java](https://www.baeldung.com/java-nlp-libraries)
+- [Introduction to Neuroph](https://www.baeldung.com/neuroph)

libraries-ai/pom.xml

@@ -23,11 +23,17 @@
             <artifactId>opennlp-tools</artifactId>
             <version>${opennlp-tools.version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.beykery</groupId>
+            <artifactId>neuroph</artifactId>
+            <version>${neuroph.version}</version>
+        </dependency>
     </dependencies>
 
     <properties>
         <stanford-corenlp.version>4.5.3</stanford-corenlp.version>
         <opennlp-tools.version>2.1.1</opennlp-tools.version>
+        <neuroph.version>2.92</neuroph.version>
     </properties>
 
 </project>

libraries-ai/src/main/java/neuroph/NeurophXOR.java

@@ -1,4 +1,4 @@
-package com.baeldung.neuroph;
+package neuroph;
 
 import org.neuroph.core.Layer;
 import org.neuroph.core.NeuralNetwork;

libraries-ai/src/test/java/com/baeldung/neuroph/XORIntegrationTest.java

@@ -1,11 +1,13 @@
 package com.baeldung.neuroph;
 
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
 import org.junit.After;
 import org.junit.Before;
 import org.junit.Test;
 import org.neuroph.core.NeuralNetwork;
 
-import static org.junit.Assert.*;
+import neuroph.NeurophXOR;
 
 public class XORIntegrationTest {
     private NeuralNetwork ann = null;

libraries-apache-commons-2/README.md

@@ -5,4 +5,5 @@ This module contains articles about Apache Commons libraries.
 ### Relevant articles
 - [Extracting a Tar File in Java](https://www.baeldung.com/java-extract-tar-file)
 - [Convert a String with Unicode Encoding to a String of Letters](https://www.baeldung.com/java-convert-string-unicode-encoding)
+- 
 - More articles: [[<--prev]](../libraries-apache-commons)

libraries-apache-commons-2/pom.xml

@@ -33,6 +33,17 @@
             <artifactId>commons-text</artifactId>
             <version>${apache-commons-text.version}</version>
         </dependency>
+        <dependency>
+            <groupId>commons-net</groupId>
+            <artifactId>commons-net</artifactId>
+            <version>${commons-net.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.mockftpserver</groupId>
+            <artifactId>MockFtpServer</artifactId>
+            <version>${mockftpserver.version}</version>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
     <properties>
@@ -40,6 +51,8 @@
         <ant.version>1.10.13</ant.version>
         <commons-vfs2.version>2.9.0</commons-vfs2.version>
         <apache-commons-text.version>1.10.0</apache-commons-text.version>
+        <commons-net.version>3.6</commons-net.version>
+        <mockftpserver.version>2.7.1</mockftpserver.version>
     </properties>
 
 </project>

libraries-apache-commons-2/src/main/java/com/baeldung/commons/ftp/FtpClient.java

@@ -1,15 +1,19 @@
-package com.baeldung.ftp;
+package com.baeldung.commons.ftp;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.stream.Collectors;
 
 import org.apache.commons.net.PrintCommandListener;
 import org.apache.commons.net.ftp.FTPClient;
 import org.apache.commons.net.ftp.FTPFile;
 import org.apache.commons.net.ftp.FTPReply;
 
-import java.io.*;
-import java.util.Arrays;
-import java.util.Collection;
-import java.util.stream.Collectors;
-
 class FtpClient {
 
     private final String server;

libraries-apache-commons-2/src/test/java/com/baeldung/commons/ftp/FtpClientIntegrationTest.java

@@ -1,4 +1,11 @@
-package com.baeldung.ftp;
+package com.baeldung.commons.ftp;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.io.File;
+import java.io.IOException;
+import java.net.URISyntaxException;
+import java.util.Collection;
 
 import org.junit.After;
 import org.junit.Before;
@@ -10,13 +17,6 @@ import org.mockftpserver.fake.filesystem.FileEntry;
 import org.mockftpserver.fake.filesystem.FileSystem;
 import org.mockftpserver.fake.filesystem.UnixFakeFileSystem;
 
-import java.io.File;
-import java.io.IOException;
-import java.net.URISyntaxException;
-import java.util.Collection;
-
-import static org.assertj.core.api.Assertions.assertThat;
-
 public class FtpClientIntegrationTest {
 
     private FakeFtpServer fakeFtpServer;

libraries-apache-commons-2/src/test/java/com/baeldung/commons/ftp/JdkFtpClientIntegrationTest.java

@@ -1,4 +1,13 @@
-package com.baeldung.ftp;
+package com.baeldung.commons.ftp;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URL;
+import java.net.URLConnection;
+import java.nio.file.Files;
 
 import org.junit.After;
 import org.junit.Before;
@@ -10,18 +19,6 @@ import org.mockftpserver.fake.filesystem.FileEntry;
 import org.mockftpserver.fake.filesystem.FileSystem;
 import org.mockftpserver.fake.filesystem.UnixFakeFileSystem;
 
-import java.io.File;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.io.InputStream;
-import java.net.URISyntaxException;
-import java.net.URL;
-import java.net.URLConnection;
-import java.nio.file.Files;
-import java.util.Collection;
-
-import static org.assertj.core.api.Assertions.assertThat;
-
 public class JdkFtpClientIntegrationTest {
 
     private FakeFtpServer fakeFtpServer;

libraries-concurrency/README.md

@@ -1,3 +1,4 @@
 ### Relevant Articles:
 
 - [Intro to Coroutines with Quasar](https://www.baeldung.com/java-quasar-coroutines)
+- [Java Concurrency Utility with JCTools](https://www.baeldung.com/java-concurrency-jc-tools)

libraries-concurrency/pom.xml

@@ -28,6 +28,16 @@
             <artifactId>quasar-reactive-streams</artifactId>
             <version>${quasar.version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.jctools</groupId>
+            <artifactId>jctools-core</artifactId>
+            <version>${jctools.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.openjdk.jmh</groupId>
+            <artifactId>jmh-core</artifactId>
+            <version>${jmh-core.version}</version>
+        </dependency>
     </dependencies>
 
     <build>
@@ -77,6 +87,7 @@
 
     <properties>
         <quasar.version>0.8.0</quasar.version>
+        <jctools.version>2.1.2</jctools.version>
     </properties>
 
 </project>

libraries-concurrency/src/main/java/com/baeldung/jctools/MpmcBenchmark.java

@@ -1,14 +1,27 @@
 package com.baeldung.jctools;
 
-import org.jctools.queues.MpmcArrayQueue;
-import org.jctools.queues.atomic.MpmcAtomicArrayQueue;
-import org.openjdk.jmh.annotations.*;
-import org.openjdk.jmh.infra.Control;
-
 import java.util.Queue;
 import java.util.concurrent.ArrayBlockingQueue;
 import java.util.concurrent.TimeUnit;
 
+import org.jctools.queues.MpmcArrayQueue;
+import org.jctools.queues.atomic.MpmcAtomicArrayQueue;
+import org.openjdk.jmh.annotations.Benchmark;
+import org.openjdk.jmh.annotations.BenchmarkMode;
+import org.openjdk.jmh.annotations.Fork;
+import org.openjdk.jmh.annotations.Group;
+import org.openjdk.jmh.annotations.GroupThreads;
+import org.openjdk.jmh.annotations.Level;
+import org.openjdk.jmh.annotations.Measurement;
+import org.openjdk.jmh.annotations.Mode;
+import org.openjdk.jmh.annotations.OutputTimeUnit;
+import org.openjdk.jmh.annotations.Param;
+import org.openjdk.jmh.annotations.Scope;
+import org.openjdk.jmh.annotations.Setup;
+import org.openjdk.jmh.annotations.State;
+import org.openjdk.jmh.annotations.Warmup;
+import org.openjdk.jmh.infra.Control;
+
 @BenchmarkMode(Mode.SampleTime)
 @OutputTimeUnit(TimeUnit.NANOSECONDS)
 @Fork(1)

libraries-concurrency/src/test/java/com/baeldung/jctools/JCToolsUnitTest.java

@@ -1,20 +1,19 @@
 package com.baeldung.jctools;
 
-import org.assertj.core.api.Assertions;
+import static org.assertj.core.api.Assertions.assertThat;
-import org.jctools.queues.SpscArrayQueue;
+import static org.assertj.core.api.Assertions.fail;
-import org.jctools.queues.SpscChunkedArrayQueue;
-import org.junit.Test;
 
 import java.util.HashSet;
 import java.util.Set;
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.atomic.AtomicReference;
-import java.util.function.IntConsumer;
 import java.util.stream.Collectors;
 import java.util.stream.IntStream;
 
-import static org.assertj.core.api.Assertions.assertThat;
+import org.assertj.core.api.Assertions;
-import static org.assertj.core.api.Assertions.fail;
+import org.jctools.queues.SpscArrayQueue;
+import org.jctools.queues.SpscChunkedArrayQueue;
+import org.junit.Test;
 
 public class JCToolsUnitTest {
 

libraries-data-3/README.md

@@ -0,0 +1,15 @@
+## Data Libraries
+
+This module contains articles about libraries for data processing in Java.
+
+### Relevant articles
+- [Introduction to Javatuples](https://www.baeldung.com/java-tuples)
+- [Software Transactional Memory in Java Using Multiverse](https://www.baeldung.com/java-multiverse-stm)
+- [Key Value Store with Chronicle Map](https://www.baeldung.com/java-chronicle-map)
+- [Guide to the Cactoos Library](https://www.baeldung.com/java-cactoos)
+- [Introduction to cache2k](https://www.baeldung.com/java-cache2k)
+- [Introduction to PCollections](https://www.baeldung.com/java-pcollections)
+- [Introduction to Eclipse Collections](https://www.baeldung.com/eclipse-collections)
+- [Introduction to Caffeine](https://www.baeldung.com/java-caching-caffeine)
+- [Guide to Using ModelMapper](https://www.baeldung.com/java-modelmapper)
+- More articles: [[<-- prev]](/../libraries-data-2)

libraries-data-3/pom.xml

@@ -0,0 +1,101 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>libraries-data-3</artifactId>
+    <name>libraries-data-3</name>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-modules</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.javatuples</groupId>
+            <artifactId>javatuples</artifactId>
+            <version>${javatuples.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.multiverse</groupId>
+            <artifactId>multiverse-core</artifactId>
+            <version>${multiverse.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>net.openhft</groupId>
+            <artifactId>chronicle-map</artifactId>
+            <version>${chronicle.map.version}</version>
+            <exclusions>
+                <exclusion>
+                    <groupId>com.sun.java</groupId>
+                    <artifactId>tools</artifactId>
+                </exclusion>
+            </exclusions>
+        </dependency>
+        <dependency>
+            <groupId>org.cactoos</groupId>
+            <artifactId>cactoos</artifactId>
+            <version>${cactoos.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.cache2k</groupId>
+            <artifactId>cache2k-base-bom</artifactId>
+            <version>${cache2k.version}</version>
+            <type>pom</type>
+        </dependency>
+        <dependency>
+            <groupId>org.pcollections</groupId>
+            <artifactId>pcollections</artifactId>
+            <version>${pcollections.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.eclipse.collections</groupId>
+            <artifactId>eclipse-collections</artifactId>
+            <version>${eclipse-collections.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.github.ben-manes.caffeine</groupId>
+            <artifactId>caffeine</artifactId>
+            <version>${caffeine.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.google.code.findbugs</groupId>
+            <artifactId>jsr305</artifactId>
+            <version>${findbugs.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.modelmapper</groupId>
+            <artifactId>modelmapper</artifactId>
+            <version>${org.modelmapper.version}</version>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <configuration>
+                    <argLine>--add-exports=java.base/jdk.internal.ref=ALL-UNNAMED --add-exports=java.base/sun.nio.ch=ALL-UNNAMED --add-exports=jdk.unsupported/sun.misc=ALL-UNNAMED --add-exports=jdk.compiler/com.sun.tools.javac.file=ALL-UNNAMED --add-opens=jdk.compiler/com.sun.tools.javac=ALL-UNNAMED --add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/java.lang.reflect=ALL-UNNAMED --add-opens=java.base/java.io=ALL-UNNAMED --add-opens=java.base/java.util=ALL-UNNAMED</argLine>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+    <properties>
+        <javatuples.version>1.2</javatuples.version>
+        <multiverse.version>0.7.0</multiverse.version>
+        <chronicle.map.version>3.24ea1</chronicle.map.version>
+        <cactoos.version>0.43</cactoos.version>
+        <cache2k.version>1.2.3.Final</cache2k.version>
+        <pcollections.version>2.1.2</pcollections.version>
+        <eclipse-collections.version>8.2.0</eclipse-collections.version>
+        <caffeine.version>3.1.8</caffeine.version>
+        <findbugs.version>3.0.2</findbugs.version>
+        <org.modelmapper.version>3.2.0</org.modelmapper.version>
+    </properties>
+
+</project>

libraries-data-3/src/main/java/com/baeldung/modelmapper/dto/GameDTO.java

@@ -1,8 +1,9 @@
 package com.baeldung.modelmapper.dto;
 
-import com.baeldung.modelmapper.domain.GameMode;
 import java.util.List;
 
+import com.baeldung.modelmapper.domain.GameMode;
+
 public class GameDTO {
 
     private Long id;

libraries-data-3/src/main/java/com/baeldung/modelmapper/repository/GameRepository.java

@@ -1,9 +1,10 @@
 package com.baeldung.modelmapper.repository;
 
-import com.baeldung.modelmapper.domain.Game;
 import java.util.ArrayList;
 import java.util.List;
 
+import com.baeldung.modelmapper.domain.Game;
+
 /**
  * Sample in-memory Game Repository
  */

libraries-data-3/src/test/java/com/baeldung/cactoos/CactoosCollectionUtilsUnitTest.java

@@ -3,8 +3,8 @@ package com.baeldung.cactoos;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 
 import java.io.IOException;
-import java.util.List;
 import java.util.ArrayList;
+import java.util.List;
 
 import org.junit.Test;
 

libraries-data-3/src/test/java/com/baeldung/caffeine/CaffeineUnitTest.java

@@ -1,6 +1,8 @@
 package com.baeldung.caffeine;
 
-import static org.junit.Assert.*;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
 
 import java.util.Arrays;
 import java.util.Map;
@@ -11,7 +13,11 @@ import javax.annotation.Nonnull;
 import org.junit.Assert;
 import org.junit.Test;
 
-import com.github.benmanes.caffeine.cache.*;
+import com.github.benmanes.caffeine.cache.AsyncLoadingCache;
+import com.github.benmanes.caffeine.cache.Cache;
+import com.github.benmanes.caffeine.cache.Caffeine;
+import com.github.benmanes.caffeine.cache.Expiry;
+import com.github.benmanes.caffeine.cache.LoadingCache;
 
 public class CaffeineUnitTest {
 

libraries-data-3/src/test/java/com/baeldung/chroniclemap/ChronicleMapUnitTest.java

@@ -1,132 +1,132 @@
-package com.baeldung.chroniclemap;
+package com.baeldung.chroniclemap;
-
+
-import static org.hamcrest.CoreMatchers.equalTo;
+import static org.hamcrest.CoreMatchers.equalTo;
-import static org.hamcrest.CoreMatchers.is;
+import static org.hamcrest.CoreMatchers.is;
-import static org.junit.Assert.assertThat;
+import static org.junit.Assert.assertThat;
-
+
-import java.io.File;
+import java.io.File;
-import java.util.HashSet;
+import java.util.HashSet;
-import java.util.Set;
+import java.util.Set;
-import java.util.stream.Collectors;
+import java.util.stream.Collectors;
-import java.util.stream.IntStream;
+import java.util.stream.IntStream;
-
+
-import org.junit.AfterClass;
+import org.junit.AfterClass;
-import org.junit.BeforeClass;
+import org.junit.BeforeClass;
-import org.junit.Test;
+import org.junit.Test;
-
+
-import net.openhft.chronicle.core.values.LongValue;
+import net.openhft.chronicle.core.values.LongValue;
-import net.openhft.chronicle.map.ChronicleMap;
+import net.openhft.chronicle.map.ChronicleMap;
-import net.openhft.chronicle.map.ExternalMapQueryContext;
+import net.openhft.chronicle.map.ExternalMapQueryContext;
-import net.openhft.chronicle.map.MapEntry;
+import net.openhft.chronicle.map.MapEntry;
-import net.openhft.chronicle.values.Values;
+import net.openhft.chronicle.values.Values;
-
+
-public class ChronicleMapUnitTest {
+public class ChronicleMapUnitTest {
-
+
-    static ChronicleMap<LongValue, CharSequence> persistedCountryMap = null;
+    static ChronicleMap<LongValue, CharSequence> persistedCountryMap = null;
-
+
-    static ChronicleMap<LongValue, CharSequence> inMemoryCountryMap = null;
+    static ChronicleMap<LongValue, CharSequence> inMemoryCountryMap = null;
-
+
-    static ChronicleMap<Integer, Set<Integer>> multiMap = null;
+    static ChronicleMap<Integer, Set<Integer>> multiMap = null;
-
+
-    @SuppressWarnings({ "unchecked", "rawtypes" })
+    @SuppressWarnings({ "unchecked", "rawtypes" })
-    @BeforeClass
+    @BeforeClass
-    public static void init() {
+    public static void init() {
-        try {
+        try {
-            inMemoryCountryMap = ChronicleMap.of(LongValue.class, CharSequence.class)
+            inMemoryCountryMap = ChronicleMap.of(LongValue.class, CharSequence.class)
-                .name("country-map")
+                .name("country-map")
-                .entries(50)
+                .entries(50)
-                .averageValue("America")
+                .averageValue("America")
-                .create();
+                .create();
-
+
-            persistedCountryMap = ChronicleMap.of(LongValue.class, CharSequence.class)
+            persistedCountryMap = ChronicleMap.of(LongValue.class, CharSequence.class)
-                .name("country-map")
+                .name("country-map")
-                .entries(50)
+                .entries(50)
-                .averageValue("America")
+                .averageValue("America")
-                .createPersistedTo(new File(System.getProperty("user.home") + "/country-details.dat"));
+                .createPersistedTo(new File(System.getProperty("user.home") + "/country-details.dat"));
-
+
-            Set<Integer> averageValue = IntStream.of(1, 2)
+            Set<Integer> averageValue = IntStream.of(1, 2)
-                .boxed()
+                .boxed()
-                .collect(Collectors.toSet());
+                .collect(Collectors.toSet());
-            multiMap = ChronicleMap.of(Integer.class, (Class<Set<Integer>>) (Class) Set.class)
+            multiMap = ChronicleMap.of(Integer.class, (Class<Set<Integer>>) (Class) Set.class)
-                .name("multi-map")
+                .name("multi-map")
-                .entries(50)
+                .entries(50)
-                .averageValue(averageValue)
+                .averageValue(averageValue)
-                .create();
+                .create();
-
+
-            LongValue qatarKey = Values.newHeapInstance(LongValue.class);
+            LongValue qatarKey = Values.newHeapInstance(LongValue.class);
-            qatarKey.setValue(1);
+            qatarKey.setValue(1);
-            inMemoryCountryMap.put(qatarKey, "Qatar");
+            inMemoryCountryMap.put(qatarKey, "Qatar");
-
+
-            LongValue key = Values.newHeapInstance(LongValue.class);
+            LongValue key = Values.newHeapInstance(LongValue.class);
-            key.setValue(1);
+            key.setValue(1);
-            persistedCountryMap.put(key, "Romania");
+            persistedCountryMap.put(key, "Romania");
-            key.setValue(2);
+            key.setValue(2);
-            persistedCountryMap.put(key, "India");
+            persistedCountryMap.put(key, "India");
-
+
-            Set<Integer> set1 = new HashSet<>();
+            Set<Integer> set1 = new HashSet<>();
-            set1.add(1);
+            set1.add(1);
-            set1.add(2);
+            set1.add(2);
-            multiMap.put(1, set1);
+            multiMap.put(1, set1);
-
+
-            Set<Integer> set2 = new HashSet<>();
+            Set<Integer> set2 = new HashSet<>();
-            set2.add(3);
+            set2.add(3);
-            multiMap.put(2, set2);
+            multiMap.put(2, set2);
-        } catch (Exception e) {
+        } catch (Exception e) {
-            e.printStackTrace();
+            e.printStackTrace();
-        }
+        }
-    }
+    }
-
+
-    @Test
+    @Test
-    public void givenGetQuery_whenCalled_shouldReturnResult() {
+    public void givenGetQuery_whenCalled_shouldReturnResult() {
-        LongValue key = Values.newHeapInstance(LongValue.class);
+        LongValue key = Values.newHeapInstance(LongValue.class);
-        key.setValue(1);
+        key.setValue(1);
-        CharSequence country = inMemoryCountryMap.get(key);
+        CharSequence country = inMemoryCountryMap.get(key);
-        assertThat(country.toString(), is(equalTo("Qatar")));
+        assertThat(country.toString(), is(equalTo("Qatar")));
-    }
+    }
-
+
-    @Test
+    @Test
-    public void givenGetUsingQuery_whenCalled_shouldReturnResult() {
+    public void givenGetUsingQuery_whenCalled_shouldReturnResult() {
-        LongValue key = Values.newHeapInstance(LongValue.class);
+        LongValue key = Values.newHeapInstance(LongValue.class);
-        StringBuilder country = new StringBuilder();
+        StringBuilder country = new StringBuilder();
-        key.setValue(1);
+        key.setValue(1);
-        persistedCountryMap.getUsing(key, country);
+        persistedCountryMap.getUsing(key, country);
-        assertThat(country.toString(), is(equalTo("Romania")));
+        assertThat(country.toString(), is(equalTo("Romania")));
-        key.setValue(2);
+        key.setValue(2);
-        persistedCountryMap.getUsing(key, country);
+        persistedCountryMap.getUsing(key, country);
-        assertThat(country.toString(), is(equalTo("India")));
+        assertThat(country.toString(), is(equalTo("India")));
-    }
+    }
-
+
-    @Test
+    @Test
-    public void  givenMultipleKeyQuery_whenProcessed_shouldChangeTheValue() {
+    public void  givenMultipleKeyQuery_whenProcessed_shouldChangeTheValue() {
-        try (ExternalMapQueryContext<Integer, Set<Integer>, ?> fistContext = multiMap.queryContext(1)) {
+        try (ExternalMapQueryContext<Integer, Set<Integer>, ?> fistContext = multiMap.queryContext(1)) {
-            try (ExternalMapQueryContext<Integer, Set<Integer>, ?> secondContext = multiMap.queryContext(2)) {
+            try (ExternalMapQueryContext<Integer, Set<Integer>, ?> secondContext = multiMap.queryContext(2)) {
-                fistContext.updateLock()
+                fistContext.updateLock()
-                    .lock();
+                    .lock();
-                secondContext.updateLock()
+                secondContext.updateLock()
-                    .lock();
+                    .lock();
-                MapEntry<Integer, Set<Integer>> firstEntry = fistContext.entry();
+                MapEntry<Integer, Set<Integer>> firstEntry = fistContext.entry();
-                Set<Integer> firstSet = firstEntry.value()
+                Set<Integer> firstSet = firstEntry.value()
-                    .get();
+                    .get();
-                firstSet.remove(2);
+                firstSet.remove(2);
-                MapEntry<Integer, Set<Integer>> secondEntry = secondContext.entry();
+                MapEntry<Integer, Set<Integer>> secondEntry = secondContext.entry();
-                Set<Integer> secondSet = secondEntry.value()
+                Set<Integer> secondSet = secondEntry.value()
-                    .get();
+                    .get();
-                secondSet.add(4);
+                secondSet.add(4);
-                firstEntry.doReplaceValue(fistContext.wrapValueAsData(firstSet));
+                firstEntry.doReplaceValue(fistContext.wrapValueAsData(firstSet));
-                secondEntry.doReplaceValue(secondContext.wrapValueAsData(secondSet));
+                secondEntry.doReplaceValue(secondContext.wrapValueAsData(secondSet));
-            }
+            }
-        } finally {
+        } finally {
-            assertThat(multiMap.get(1)
+            assertThat(multiMap.get(1)
-                .size(), is(equalTo(1)));
+                .size(), is(equalTo(1)));
-            assertThat(multiMap.get(2)
+            assertThat(multiMap.get(2)
-                .size(), is(equalTo(2)));
+                .size(), is(equalTo(2)));
-        }
+        }
-    }
+    }
-
+
-    @AfterClass
+    @AfterClass
-    public static void finish() {
+    public static void finish() {
-        persistedCountryMap.close();
+        persistedCountryMap.close();
-        inMemoryCountryMap.close();
+        inMemoryCountryMap.close();
-        multiMap.close();
+        multiMap.close();
-    }
+    }
-}
+}

libraries-data-3/src/test/java/com/baeldung/eclipsecollections/CollectPatternUnitTest.java

@@ -1,9 +1,8 @@
 package com.baeldung.eclipsecollections;
 
+import org.assertj.core.api.Assertions;
 import org.eclipse.collections.api.list.MutableList;
 import org.eclipse.collections.impl.list.mutable.FastList;
-
-import org.assertj.core.api.Assertions;
 import org.junit.Test;
 
 public class CollectPatternUnitTest {

libraries-data-3/src/test/java/com/baeldung/eclipsecollections/FlatCollectUnitTest.java

@@ -1,12 +1,11 @@
 package com.baeldung.eclipsecollections;
 
-import org.assertj.core.api.Assertions;
-import org.eclipse.collections.api.list.MutableList;
-import org.eclipse.collections.impl.list.mutable.FastList;
-
 import java.util.ArrayList;
 import java.util.List;
 
+import org.assertj.core.api.Assertions;
+import org.eclipse.collections.api.list.MutableList;
+import org.eclipse.collections.impl.list.mutable.FastList;
 import org.junit.Before;
 import org.junit.Test;
 

libraries-data-3/src/test/java/com/baeldung/eclipsecollections/ForEachPatternUnitTest.java

@@ -1,7 +1,5 @@
 package com.baeldung.eclipsecollections;
 
-import static org.junit.Assert.assertEquals;
-
 import org.eclipse.collections.api.tuple.Pair;
 import org.eclipse.collections.impl.map.mutable.UnifiedMap;
 import org.eclipse.collections.impl.tuple.Tuples;

libraries-data-3/src/test/java/com/baeldung/eclipsecollections/ZipUnitTest.java

@@ -1,11 +1,10 @@
 package com.baeldung.eclipsecollections;
 
+import org.assertj.core.api.Assertions;
 import org.eclipse.collections.api.list.MutableList;
 import org.eclipse.collections.api.tuple.Pair;
 import org.eclipse.collections.impl.factory.Lists;
 import org.eclipse.collections.impl.tuple.Tuples;
-
-import org.assertj.core.api.Assertions;
 import org.junit.Before;
 import org.junit.Test;
 

libraries-data-3/src/test/java/com/baeldung/modelmapper/ModelMapperUnitTest.java

@@ -5,15 +5,9 @@ import static org.junit.jupiter.api.Assertions.assertNotEquals;
 import static org.junit.jupiter.api.Assertions.assertNotNull;
 import static org.junit.jupiter.api.Assertions.assertNull;
 
-import com.baeldung.modelmapper.domain.Game;
-import com.baeldung.modelmapper.domain.GameMode;
-import com.baeldung.modelmapper.domain.GameSettings;
-import com.baeldung.modelmapper.domain.Player;
-import com.baeldung.modelmapper.dto.GameDTO;
-import com.baeldung.modelmapper.dto.PlayerDTO;
-import com.baeldung.modelmapper.repository.GameRepository;
 import java.time.Instant;
 import java.util.Collection;
+
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import org.modelmapper.Condition;
@@ -24,6 +18,14 @@ import org.modelmapper.Provider;
 import org.modelmapper.TypeMap;
 import org.modelmapper.convention.MatchingStrategies;
 
+import com.baeldung.modelmapper.domain.Game;
+import com.baeldung.modelmapper.domain.GameMode;
+import com.baeldung.modelmapper.domain.GameSettings;
+import com.baeldung.modelmapper.domain.Player;
+import com.baeldung.modelmapper.dto.GameDTO;
+import com.baeldung.modelmapper.dto.PlayerDTO;
+import com.baeldung.modelmapper.repository.GameRepository;
+
 public class ModelMapperUnitTest {
 
     ModelMapper mapper;

libraries-data-3/src/test/java/com/baeldung/pcollections/PCollectionsUnitTest.java

@@ -1,6 +1,14 @@
 package com.baeldung.pcollections;
 
-import org.junit.Test;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.Map;
+
+import org.junit.jupiter.api.Test;
 import org.pcollections.HashPMap;
 import org.pcollections.HashTreePMap;
 import org.pcollections.HashTreePSet;
@@ -8,14 +16,6 @@ import org.pcollections.MapPSet;
 import org.pcollections.PVector;
 import org.pcollections.TreePVector;
 
-import java.util.Arrays;
-import java.util.HashMap;
-import java.util.Map;
-
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertTrue;
-
 public class PCollectionsUnitTest {
 
     @Test

libraries-data-3/src/test/java/com/baeldung/stm/AccountUnitTest.java

@@ -1,6 +1,7 @@
 package com.baeldung.stm;
 
-import org.junit.Test;
+import static org.assertj.core.api.Java6Assertions.assertThat;
+import static org.junit.Assert.assertTrue;
 
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.ExecutorService;
@@ -8,8 +9,7 @@ import java.util.concurrent.Executors;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicBoolean;
 
-import static org.assertj.core.api.Java6Assertions.assertThat;
+import org.junit.Test;
-import static org.junit.Assert.assertTrue;
 
 public class AccountUnitTest {
 

libraries-data-db/pom.xml

@@ -305,6 +305,7 @@
         <debezium.version>2.1.3.Final</debezium.version>
         <flexy-pool.version>2.2.3</flexy-pool.version>
         <testcontainers-version>1.17.6</testcontainers-version>
+        <mapdb.version>3.0.8</mapdb.version>
     </properties>
 
 </project>

libraries-io/README.md

@@ -4,3 +4,4 @@
 - [Transferring a File Through SFTP in Java](https://www.baeldung.com/java-file-sftp)
 - [How to Create Password-Protected Zip Files and Unzip Them in Java](https://www.baeldung.com/java-password-protected-zip-unzip)
 - [How to Create CSV File from POJO with Custom Column Headers and Positions](https://www.baeldung.com/java-create-csv-pojo-customize-columns)
+- [Delete a Directory Recursively in Java](https://www.baeldung.com/java-delete-directory)

libraries-io/pom.xml

@@ -5,18 +5,6 @@
     <modelVersion>4.0.0</modelVersion>
     <artifactId>libraries-io</artifactId>
     <name>libraries-io</name>
-    <build>
-        <plugins>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-compiler-plugin</artifactId>
-                <configuration>
-                    <source>17</source>
-                    <target>17</target>
-                </configuration>
-            </plugin>
-        </plugins>
-    </build>
 
     <parent>
         <groupId>com.baeldung</groupId>
@@ -51,8 +39,31 @@
             <artifactId>opencsv</artifactId>
             <version>${opencsv.version}</version>
         </dependency>
+        <dependency>
+            <groupId>commons-io</groupId>
+            <artifactId>commons-io</artifactId>
+            <version>${commons-io.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-web</artifactId>
+            <version>${spring.version}</version>
+        </dependency>
     </dependencies>
 
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <source>17</source>
+                    <target>17</target>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
     <properties>
         <!-- sftp -->
         <jsch.version>0.1.55</jsch.version>
@@ -60,9 +71,7 @@
         <vfs.version>2.4</vfs.version>
         <zip4j.version>2.9.0</zip4j.version>
         <opencsv.version>5.8</opencsv.version>
-        <maven.compiler.source>17</maven.compiler.source>
+        <spring.version>4.3.8.RELEASE</spring.version>
-        <maven.compiler.target>17</maven.compiler.target>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>
 
 </project>

libraries-io/src/test/java/com/baeldung/java/io/JavaDirectoryDeleteUnitTest.java

@@ -1,4 +1,4 @@
-package com.baeldung.io;
+package com.baeldung.java.io;
 
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertTrue;

libraries-testing-2/README.md

@@ -0,0 +1,8 @@
+## Testing
+
+This module contains articles about test libraries.
+
+### Relevant articles
+
+- [Consumer Driven Contracts with Pact](https://www.baeldung.com/pact-junit-consumer-driven-contracts)
+- - More articles: [[<-- prev]](../libraries-testing)

libraries-testing-2/pom.xml

@@ -0,0 +1,56 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>libraries-testing-2</artifactId>
+    <name>libraries-testing-2</name>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-boot-2</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../parent-boot-2</relativePath>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>au.com.dius</groupId>
+            <artifactId>pact-jvm-provider-junit5_2.12</artifactId>
+            <version>${pact.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>au.com.dius</groupId>
+            <artifactId>pact-jvm-consumer-junit5_2.12</artifactId>
+            <version>${pact.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-web</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <configuration>
+                    <systemPropertyVariables>
+                        <pact.rootDir>target/mypacts</pact.rootDir>
+                    </systemPropertyVariables>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+    <properties>
+        <pact.version>3.6.3</pact.version>
+    </properties>
+
+</project>