Merge branch 'master' into JAVA-18133

apache-libraries/pom.xml

@@ -118,11 +118,6 @@
             <artifactId>curator-recipes</artifactId>
             <version>${curator.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.apache.zookeeper</groupId>
-            <artifactId>zookeeper</artifactId>
-            <version>${zookeeper.version}</version>
-        </dependency>
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
             <artifactId>jackson-core</artifactId>
@@ -191,10 +186,8 @@
     </build>
 
     <properties>
-        <maven.compiler.source>1.8</maven.compiler.source>
-        <maven.compiler.target>1.8</maven.compiler.target>
         <avro.version>1.8.2</avro.version>
-        <beam.version>2.19.0</beam.version>
+        <beam.version>2.45.0</beam.version>
         <bval.version>1.1.2</bval.version>
         <javax.validation.validation-api.version>1.1.0.Final</javax.validation.validation-api.version>
         <meecrowave-junit.version>1.2.0</meecrowave-junit.version>

core-groovy-modules/core-groovy-2/pom.xml

@@ -83,7 +83,7 @@
                     <dependency>
                         <groupId>org.codehaus.groovy</groupId>
                         <artifactId>groovy-eclipse-batch</artifactId>
-                        <version>${groovy.version}-01</version>
+                        <version>${groovy-eclipse-batch.version}</version>
                     </dependency>
                 </dependencies>
             </plugin>
@@ -163,9 +163,10 @@
 
     <properties>
         <groovy-wslite.version>1.1.3</groovy-wslite.version>
-        <assembly.plugin.version>3.1.0</assembly.plugin.version>
+        <assembly.plugin.version>3.4.2</assembly.plugin.version>
-        <compiler.plugin.version>3.8.0</compiler.plugin.version>
+        <compiler.plugin.version>3.8.1</compiler.plugin.version>
-        <groovy.compiler.version>3.3.0-01</groovy.compiler.version>
+        <groovy.compiler.version>3.7.0</groovy.compiler.version>
+        <groovy-eclipse-batch.version>3.0.8-01</groovy-eclipse-batch.version>
     </properties>
 
 </project>

core-groovy-modules/pom.xml

@@ -21,12 +21,12 @@
     </modules>
 
     <properties>
-        <groovy.version>3.0.8</groovy.version>
+        <groovy.version>3.0.15</groovy.version>
-        <groovy-all.version>3.0.8</groovy-all.version>
+        <groovy-all.version>3.0.15</groovy-all.version>
-        <groovy-sql.version>3.0.8</groovy-sql.version>
+        <groovy-sql.version>3.0.15</groovy-sql.version>
-        <hsqldb.version>2.4.0</hsqldb.version>
+        <hsqldb.version>2.7.1</hsqldb.version>
         <spock-core.version>2.3-groovy-3.0</spock-core.version>
-        <gmavenplus-plugin.version>1.6</gmavenplus-plugin.version>
+        <gmavenplus-plugin.version>2.1.0</gmavenplus-plugin.version>
     </properties>
 
 </project>

core-java-modules/core-java-collections-5/README.md

@@ -0,0 +1,7 @@
+=========
+
+## Core Java Collections Cookbooks and Examples
+
+### Relevant Articles:
+
+- More articles: [[<-- prev]](/core-java-modules/core-java-collections-4)

core-java-modules/core-java-collections-5/pom.xml

@@ -0,0 +1,58 @@
+<?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>core-java-collections-5</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <name>core-java-collections-5</name>
+    <packaging>jar</packaging>
+
+    <parent>
+        <groupId>com.baeldung.core-java-modules</groupId>
+        <artifactId>core-java-modules</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.junit.platform</groupId>
+            <artifactId>junit-platform-runner</artifactId>
+            <version>${junit-platform.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter</artifactId>
+            <version>${junit.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.vintage</groupId>
+            <artifactId>junit-vintage-engine</artifactId>
+            <version>${junit.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.roaringbitmap</groupId>
+            <artifactId>RoaringBitmap</artifactId>
+            <version>${roaringbitmap.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.openjdk.jmh</groupId>
+            <artifactId>jmh-generator-annprocess</artifactId>
+            <version>${jmh.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.openjdk.jmh</groupId>
+            <artifactId>jmh-core</artifactId>
+            <version>${jmh.version}</version>
+        </dependency>
+    </dependencies>
+
+    <properties>
+        <junit.version>5.9.2</junit.version>
+        <roaringbitmap.version>0.9.38</roaringbitmap.version>
+        <jmh.version>1.36</jmh.version>
+    </properties>
+</project>

core-java-modules/core-java-collections-5/src/main/java/com/baeldung/roaringbitmap/BitSetsBenchmark.java

@@ -0,0 +1,82 @@
+package com.baeldung.roaringbitmap;
+
+import java.util.BitSet;
+
+import org.openjdk.jmh.annotations.Benchmark;
+import org.openjdk.jmh.annotations.Scope;
+import org.openjdk.jmh.annotations.Setup;
+import org.openjdk.jmh.annotations.State;
+import org.roaringbitmap.RoaringBitmap;
+
+@State(Scope.Thread)
+public class BitSetsBenchmark {
+    private RoaringBitmap rb1;
+    private BitSet bs1;
+    private RoaringBitmap rb2;
+    private BitSet bs2;
+    private final static int SIZE = 10_000_000;
+
+    @Setup
+    public void setup() {
+        rb1 = new RoaringBitmap();
+        bs1 = new BitSet(SIZE);
+        rb2 = new RoaringBitmap();
+        bs2 = new BitSet(SIZE);
+        for (int i = 0; i < SIZE / 2; i++) {
+            rb1.add(i);
+            bs1.set(i);
+        }
+        for (int i = SIZE / 2; i < SIZE; i++) {
+            rb2.add(i);
+            bs2.set(i);
+        }
+    }
+
+    @Benchmark
+    public RoaringBitmap roaringBitmapUnion() {
+        return RoaringBitmap.or(rb1, rb2);
+    }
+
+    @Benchmark
+    public BitSet bitSetUnion() {
+        BitSet result = (BitSet) bs1.clone();
+        result.or(bs2);
+        return result;
+    }
+
+    @Benchmark
+    public RoaringBitmap roaringBitmapIntersection() {
+        return RoaringBitmap.and(rb1, rb2);
+    }
+
+    @Benchmark
+    public BitSet bitSetIntersection() {
+        BitSet result = (BitSet) bs1.clone();
+        result.and(bs2);
+        return result;
+    }
+
+    @Benchmark
+    public RoaringBitmap roaringBitmapDifference() {
+        return RoaringBitmap.andNot(rb1, rb2);
+    }
+
+    @Benchmark
+    public BitSet bitSetDifference() {
+        BitSet result = (BitSet) bs1.clone();
+        result.andNot(bs2);
+        return result;
+    }
+
+    @Benchmark
+    public RoaringBitmap roaringBitmapXOR() {
+        return RoaringBitmap.xor(rb1, rb2);
+    }
+
+    @Benchmark
+    public BitSet bitSetXOR() {
+        BitSet result = (BitSet) bs1.clone();
+        result.xor(bs2);
+        return result;
+    }
+}

core-java-modules/core-java-collections-5/src/main/java/com/baeldung/roaringbitmap/BitSetsBenchmarkRunner.java

@@ -0,0 +1,9 @@
+package com.baeldung.roaringbitmap;
+
+import java.io.IOException;
+
+public class BitSetsBenchmarkRunner {
+    public static void main(String... args) throws IOException {
+        org.openjdk.jmh.Main.main(args);
+    }
+}

core-java-modules/core-java-collections-5/src/test/java/com/baeldung/roaringbitmap/RoaringBitmapBenchmarkUnitTest.java

@@ -0,0 +1,45 @@
+package com.baeldung.roaringbitmap;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.api.Test;
+import org.roaringbitmap.RoaringBitmap;
+
+class RoaringBitmapBenchmarkUnitTest {
+    @Test
+    public void givenTwoRoaringBitmap_whenUsingOr_thenWillGetSetsUnion() {
+        RoaringBitmap expected = RoaringBitmap.bitmapOf(1, 2, 3, 4, 5, 6, 7, 8);
+        RoaringBitmap A = RoaringBitmap.bitmapOf(1, 2, 3, 4, 5);
+        RoaringBitmap B = RoaringBitmap.bitmapOf(4, 5, 6, 7, 8);
+        RoaringBitmap union = RoaringBitmap.or(A, B);
+        assertEquals(expected, union);
+    }
+
+    @Test
+    public void givenTwoRoaringBitmap_whenUsingAnd_thenWillGetSetsIntersection() {
+        RoaringBitmap expected = RoaringBitmap.bitmapOf(4, 5);
+        RoaringBitmap A = RoaringBitmap.bitmapOfRange(1, 6);
+        RoaringBitmap B = RoaringBitmap.bitmapOf(4, 5, 6, 7, 8);
+        RoaringBitmap intersection = RoaringBitmap.and(A, B);
+        assertEquals(expected, intersection);
+    }
+
+    @Test
+    public void givenTwoRoaringBitmap_whenUsingAndNot_thenWillGetSetsDifference() {
+        RoaringBitmap expected = RoaringBitmap.bitmapOf(1, 2, 3);
+        RoaringBitmap A = new RoaringBitmap();
+        A.add(1L, 6L);
+        RoaringBitmap B = RoaringBitmap.bitmapOf(4, 5, 6, 7, 8);
+        RoaringBitmap difference = RoaringBitmap.andNot(A, B);
+        assertEquals(expected, difference);
+    }
+
+    @Test
+    public void givenTwoRoaringBitmap_whenUsingXOR_thenWillGetSetsSymmetricDifference() {
+        RoaringBitmap expected = RoaringBitmap.bitmapOf(1, 2, 3, 6, 7, 8);
+        RoaringBitmap A = RoaringBitmap.bitmapOfRange(1, 6);
+        RoaringBitmap B = RoaringBitmap.bitmapOfRange(4, 9);
+        RoaringBitmap xor = RoaringBitmap.xor(A, B);
+        assertEquals(expected, xor);
+    }
+}

core-java-modules/core-java-collections-list-5/src/main/java/com/baeldung/listduplicate/ListDuplicate.java

@@ -0,0 +1,69 @@
+package com.baeldung.listduplicate;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.function.Function;
+import java.util.stream.Collectors;
+
+public class ListDuplicate {
+    public List<Integer> listDuplicateUsingSet(List<Integer> list) {
+        List<Integer> duplicates = new ArrayList<>();
+        Set<Integer> set = new HashSet<>();
+        for (Integer i : list) {
+            if (set.contains(i)) {
+                duplicates.add(i);
+            } else {
+                set.add(i);
+            }
+        }
+        return duplicates;
+    }
+
+    public List<Integer> listDuplicateUsingMap(List<Integer> list) {
+        List<Integer> duplicates = new ArrayList<>();
+        Map<Integer, Integer> frequencyMap = new HashMap<>();
+        for (Integer number : list) {
+            frequencyMap.put(number, frequencyMap.getOrDefault(number, 0) + 1);
+        }
+        for (int number : frequencyMap.keySet()) {
+            if (frequencyMap.get(number) != 1) {
+                duplicates.add(number);
+            }
+        }
+        return duplicates;
+    }
+
+    public List<Integer> listDuplicateUsingFilterAndSetAdd(List<Integer> list) {
+        Set<Integer> elements = new HashSet<Integer>();
+        return list.stream()
+          .filter(n -> !elements.add(n))
+          .collect(Collectors.toList());
+    }
+
+    public List<Integer> listDuplicateUsingCollectionsFrequency(List<Integer> list) {
+        List<Integer> duplicates = new ArrayList<>();
+        Set<Integer> set = list.stream()
+          .filter(i -> Collections.frequency(list, i) > 1)
+          .collect(Collectors.toSet());
+        duplicates.addAll(set);
+        return duplicates;
+    }
+
+    public List<Integer> listDuplicateUsingMapAndCollectorsGroupingBy(List<Integer> list) {
+        List<Integer> duplicates = new ArrayList<>();
+        Set<Integer> set = list.stream()
+          .collect(Collectors.groupingBy(Function.identity(), Collectors.counting()))
+          .entrySet()
+          .stream()
+          .filter(m -> m.getValue() > 1)
+          .map(Map.Entry::getKey)
+          .collect(Collectors.toSet());
+        duplicates.addAll(set);
+        return duplicates;
+    }
+}

core-java-modules/core-java-collections-list-5/src/test/java/com/baeldung/listduplicate/ListDuplicateUnitTest.java

@@ -0,0 +1,68 @@
+package com.baeldung.listduplicate;
+
+import java.util.Arrays;
+import java.util.List;
+
+import org.junit.Assert;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+public class ListDuplicateUnitTest {
+    private static ListDuplicate listDuplicate;
+
+    @BeforeClass
+    public static void setup() {
+        listDuplicate = new ListDuplicate();
+    }
+
+    @Test
+    public void givenList_whenUsingSet_thenReturnDuplicateElements() {
+        List<Integer> list = Arrays.asList(1, 2, 3, 3, 4, 4, 5);
+        List<Integer> duplicates = listDuplicate.listDuplicateUsingSet(list);
+        Assert.assertEquals(duplicates.size(), 2);
+        Assert.assertEquals(duplicates.contains(3), true);
+        Assert.assertEquals(duplicates.contains(4), true);
+        Assert.assertEquals(duplicates.contains(1), false);
+    }
+
+    @Test
+    public void givenList_whenUsingFrequencyMap_thenReturnDuplicateElements() {
+        List<Integer> list = Arrays.asList(1, 2, 3, 3, 4, 4, 5);
+        List<Integer> duplicates = listDuplicate.listDuplicateUsingMap(list);
+        Assert.assertEquals(duplicates.size(), 2);
+        Assert.assertEquals(duplicates.contains(3), true);
+        Assert.assertEquals(duplicates.contains(4), true);
+        Assert.assertEquals(duplicates.contains(1), false);
+    }
+
+    @Test
+    public void givenList_whenUsingFilterAndSetAdd_thenReturnDuplicateElements() {
+        List<Integer> list = Arrays.asList(1, 2, 3, 3, 4, 4, 5);
+        List<Integer> duplicates = listDuplicate.listDuplicateUsingFilterAndSetAdd(list);
+        Assert.assertEquals(duplicates.size(), 2);
+        Assert.assertEquals(duplicates.contains(3), true);
+        Assert.assertEquals(duplicates.contains(4), true);
+        Assert.assertEquals(duplicates.contains(1), false);
+    }
+
+    @Test
+    public void givenList_whenUsingCollectionsFrequency_thenReturnDuplicateElements() {
+        List<Integer> list = Arrays.asList(1, 2, 3, 3, 4, 4, 5);
+        List<Integer> duplicates = listDuplicate.listDuplicateUsingCollectionsFrequency(list);
+        Assert.assertEquals(duplicates.size(), 2);
+        Assert.assertEquals(duplicates.contains(3), true);
+        Assert.assertEquals(duplicates.contains(4), true);
+        Assert.assertEquals(duplicates.contains(1), false);
+    }
+
+    @Test
+    public void givenList_whenUsingMapAndCollectorsGroupingBy_thenReturnDuplicateElements() {
+        List<Integer> list = Arrays.asList(1, 2, 3, 3, 4, 4, 5);
+        List<Integer> duplicates = listDuplicate.listDuplicateUsingCollectionsFrequency(list);
+        Assert.assertEquals(duplicates.size(), 2);
+        Assert.assertEquals(duplicates.contains(3), true);
+        Assert.assertEquals(duplicates.contains(4), true);
+        Assert.assertEquals(duplicates.contains(1), false);
+    }
+
+}

core-java-modules/pom.xml

@@ -31,6 +31,7 @@
         <module>core-java-collections-2</module>
         <module>core-java-collections-3</module>
         <module>core-java-collections-4</module>
+        <module>core-java-collections-5</module>
         <module>core-java-collections-conversions</module>
         <module>core-java-collections-conversions-2</module>
         <module>core-java-collections-set-2</module>

dependency-exclusion/core-java-exclusions/pom.xml

@@ -0,0 +1,53 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xmlns="http://maven.apache.org/POM/4.0.0"
+         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>core-java-exclusions</artifactId>
+    <version>0.0.0-SNAPSHOT</version>
+    <name>core-java-exclusions</name>
+    <packaging>jar</packaging>
+
+    <parent>
+        <groupId>com.baeldung.dependency-exclusion</groupId>
+        <artifactId>dependency-exclusion</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
+    </parent>
+
+<build>
+    <plugins>
+        <plugin>
+            <groupId>org.apache.maven.plugins</groupId>
+            <artifactId>maven-surefire-plugin</artifactId>
+            <version>${surefire-version}</version>
+            <configuration>
+                <runOrder>alphabetical</runOrder>
+                <threadCount>1</threadCount>
+                <properties>
+                    <property>
+                        <name>junit</name>
+                        <value>false</value>
+                    </property>
+                </properties>
+            </configuration>
+            <dependencies>
+                <dependency>
+                    <!-- Deactivate JUnit 4.7 engine by overriding it with an empty dummy -->
+                    <groupId>org.apache.maven.surefire</groupId>
+                    <artifactId>surefire-junit47</artifactId>
+                    <version>dummy</version>
+                </dependency>
+            </dependencies>
+        </plugin>
+    </plugins>
+</build>
+
+    <dependencies>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+</project>

dependency-exclusion/core-java-exclusions/src/test/java/com/sample/project/tests/ExcludeDirectDependencyUnitTest.java

@@ -0,0 +1,12 @@
+package com.sample.project.tests;
+
+import static org.junit.Assert.assertTrue;
+
+import org.junit.Test;
+
+public class ExcludeDirectDependencyUnitTest {
+    @Test
+    public void basicUnitTest() {
+        assertTrue(true);
+    }
+}

dependency-exclusion/dummy-surefire-junit47/pom.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xmlns="http://maven.apache.org/POM/4.0.0"
+         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>org.apache.maven.surefire</groupId>
+    <artifactId>surefire-junit47</artifactId>
+    <version>dummy</version>
+</project>

dependency-exclusion/pom.xml

@@ -0,0 +1,71 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xmlns="http://maven.apache.org/POM/4.0.0"
+         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.dependency-exclusion</groupId>
+    <artifactId>dependency-exclusion</artifactId>
+    <name>dependency-exclusion</name>
+    <packaging>pom</packaging>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-java</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../parent-java</relativePath>
+    </parent>
+
+    <properties>
+        <surefire-version>2.22.2</surefire-version>
+    </properties>
+
+    <modules>
+        <module>dummy-surefire-junit47</module>
+        <module>core-java-exclusions</module>
+    </modules>
+
+    <build>
+        <pluginManagement>
+            <plugins>
+                <plugin>
+                    <groupId>org.apache.maven.plugins</groupId>
+                    <artifactId>maven-compiler-plugin</artifactId>
+                    <version>3.7.0</version>
+                    <configuration>
+                        <source>1.8</source>
+                        <target>1.8</target>
+                        <compilerArgs>
+                            <arg>-parameters</arg>
+                        </compilerArgs>
+                    </configuration>
+                </plugin>
+                <plugin>
+                    <groupId>org.apache.maven.plugins</groupId>
+                    <artifactId>maven-surefire-plugin</artifactId>
+                    <version>${surefire-version}</version>
+                    <configuration>
+                        <threadCount>1</threadCount>
+                    </configuration>
+                    <dependencies>
+                        <dependency>
+                            <groupId>org.apache.maven.surefire</groupId>
+                            <artifactId>surefire-junit-platform</artifactId>
+                            <version>${surefire-version}</version>
+                        </dependency>
+                    </dependencies>
+                </plugin>
+            </plugins>
+        </pluginManagement>
+    </build>
+
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>junit</groupId>
+                <artifactId>junit</artifactId>
+                <version>4.13</version>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
+
+</project>

guava-modules/guava-collections/pom.xml

@@ -37,6 +37,7 @@
             <version>${java-hamcrest.version}</version>
             <scope>test</scope>
         </dependency>
+
     </dependencies>
 
     <build>

pom.xml

@@ -331,13 +331,11 @@
                 <module>parent-java</module>
 
                 <module>apache-cxf-modules</module>
-                <module>apache-libraries</module>
 
                 <module>azure</module>
                 <module>checker-plugin</module>
                 <!-- <module>clojure</module> --> <!-- Not a maven project -->
 
-                <module>core-groovy-modules</module>
                 <module>core-java-modules</module>
                 <module>couchbase</module>
 
@@ -346,7 +344,6 @@
                 <module>gradle-modules/gradle/maven-to-gradle</module>
                 <!-- <module>grails</module> --> <!-- Not a maven project -->
 
-                <module>guava-modules</module>
                 <!-- <module>guest</module> --> <!-- not to be built as its for guest articles  -->
 
                 <module>apache-httpclient</module>
@@ -402,13 +399,8 @@
                 <module>performance-tests</module>
                 <module>persistence-modules</module>
 
-
-                <module>quarkus-modules</module>
-
                 <module>rule-engines-modules</module>
-                <module>rxjava-modules</module>
 
-                <module>reactive-systems</module>
                 <module>security-modules</module>
 
                 <module>vavr-modules</module>
@@ -598,13 +590,11 @@
                 <module>parent-java</module>
 
                 <module>apache-cxf-modules</module>
-                <module>apache-libraries</module>
 
                 <module>azure</module>
                 <module>checker-plugin</module>
                 <!-- <module>clojure</module> --> <!-- Not a maven project -->
 
-                <module>core-groovy-modules</module>
                 <module>core-java-modules</module>
                 <module>couchbase</module>
                 <module>custom-pmd</module>
@@ -613,8 +603,6 @@
                 <!-- <module>gradle-modules</module> --> <!-- Not a maven project -->
                 <module>gradle-modules/gradle/maven-to-gradle</module>
                 <!-- <module>grails</module> --> <!-- Not a maven project -->
-
-                <module>guava-modules</module>
                 <!-- <module>guest</module> --> <!-- not to be built as its for guest articles  -->
 
                 <module>apache-httpclient</module>
@@ -659,7 +647,6 @@
                 <module>microservices-modules</module>
                 <module>muleesb</module>
 
-
                 <module>netflix-modules</module>
 
                 <module>osgi</module>
@@ -670,13 +657,8 @@
                 <module>performance-tests</module>
                 <module>persistence-modules</module>
 
-
-                <module>quarkus-modules</module>
-
                 <module>rule-engines-modules</module>
-                <module>rxjava-modules</module>
 
-                <module>reactive-systems</module>
                 <module>security-modules</module>
 
                 <module>vavr-modules</module>
@@ -878,11 +860,13 @@
 
             <modules>
                 <module>algorithms-modules</module>
+                <module>apache-libraries</module>
                 <module>apache-poi</module>
                 <module>apache-velocity</module>
                 <module>di-modules</module>
                 <module>asciidoctor</module>
                 <module>aws-modules</module>
+                <module>core-groovy-modules</module>
                 <module>core-java-modules/core-java-9</module>
                 <module>core-java-modules/core-java-9-improvements</module>
                 <module>core-java-modules/core-java-9-jigsaw</module>
@@ -927,6 +911,7 @@
                 <module>deeplearning4j</module>
                 <module>docker-modules</module>
 				        <module>drools</module>
+                <module>guava-modules</module>
                 <module>apache-httpclient-2</module>
                 <module>kubernetes-modules/kubernetes-spring</module>
                 <module>libraries-concurrency</module>
@@ -936,8 +921,7 @@
                 <module>optaplanner</module>
                 <module>persistence-modules/sirix</module>
                 <module>persistence-modules/spring-data-cassandra-2</module>
-                <module>quarkus-modules/quarkus-vs-springboot</module>
+                <module>quarkus-modules</module>
-                <module>quarkus-modules/quarkus-jandex</module>
                 <module>spring-boot-modules/spring-boot-cassandre</module>
                 <module>spring-boot-modules/spring-boot-3</module>
                 <module>spring-boot-modules/spring-boot-3-native</module>
@@ -947,6 +931,8 @@
                 <module>spring-swagger-codegen/custom-validations-opeanpi-codegen</module>
                 <module>testing-modules/testing-assertions</module>
                 <module>persistence-modules/fauna</module>
+                <module>reactive-systems</module>
+                <module>rxjava-modules</module>
                 <module>lightrun</module>
                 <module>tablesaw</module>
                 <module>geotools</module>
@@ -1088,12 +1074,13 @@
 
             <modules>
                 <module>algorithms-modules</module>
+                <module>apache-libraries</module>
                 <module>apache-poi</module>
                 <module>apache-velocity</module>
                 <module>di-modules</module>
                 <module>asciidoctor</module>
                 <module>aws-modules</module>
-
+                <module>core-groovy-modules</module>
                 <module>core-java-modules/core-java-9</module>
                 <module>core-java-modules/core-java-9-improvements</module>
                 <module>core-java-modules/core-java-9-jigsaw</module>
@@ -1138,6 +1125,7 @@
                 <module>deeplearning4j</module>
                 <module>docker-modules</module>
 				        <module>drools</module>
+                <module>guava-modules</module>
                 <module>apache-httpclient-2</module>
                 <module>kubernetes-modules/kubernetes-spring</module>
                 <module>libraries-concurrency</module>
@@ -1147,8 +1135,7 @@
                 <module>optaplanner</module>
                 <module>persistence-modules/sirix</module>
                 <module>persistence-modules/spring-data-cassandra-2</module>
-                <module>quarkus-modules/quarkus-vs-springboot</module>
+                <module>quarkus-modules</module>
-                <module>quarkus-modules/quarkus-jandex</module>
                 <module>spring-boot-modules/spring-boot-cassandre</module>
                 <module>spring-boot-modules/spring-boot-3</module>
                 <module>spring-boot-modules/spring-boot-3-native</module>
@@ -1158,6 +1145,8 @@
                 <module>spring-swagger-codegen/custom-validations-opeanpi-codegen</module>
                 <module>testing-modules/testing-assertions</module>
                 <module>persistence-modules/fauna</module>
+                <module>reactive-systems</module>
+                <module>rxjava-modules</module>
                 <module>lightrun</module>
                 <module>tablesaw</module>
                 <module>geotools</module>

quarkus-modules/pom.xml

@@ -16,7 +16,8 @@
     <modules>
         <module>quarkus</module>
         <module>quarkus-extension</module>
-        <!--Disabled because requires Java-9 <module>quarkus-jandex</module> <module>quarkus-vs-springboot</module> -->
+        <module>quarkus-jandex</module>
+        <module>quarkus-vs-springboot</module>
     </modules>
 
 </project>

quarkus-modules/quarkus/pom.xml

@@ -182,7 +182,7 @@
     </profiles>
 
     <properties>
-        <quarkus.version>1.7.0.Final</quarkus.version>
+        <quarkus.version>2.16.3.Final</quarkus.version>
         <mockito.version>3.3.0</mockito.version>
     </properties>
 

rxjava-modules/pom.xml

@@ -17,6 +17,7 @@
 
     <modules>
         <module>rxjava-core</module>
+        <module>rxjava-core-2</module>
         <module>rxjava-libraries</module>
         <module>rxjava-observables</module>
         <module>rxjava-operators</module>

rxjava-modules/rxjava-core-2/src/test/java/com/baeldung/rxjava/justvscallable/SingleJustVsFromCallableTest.java

@@ -12,7 +12,7 @@ import org.mockito.Mockito;
 import rx.Single;
 import rx.observers.TestSubscriber;
 
-class SingleJustVsFromCallableTest {
+class SingleJustVsFromCallableUnitTest {
 
     public EmployeeRepository repository = mock(EmployeeRepository.class);
 

testing-modules/instancio/pom.xml

@@ -51,8 +51,8 @@
     </dependencies>
 
     <properties>
-        <instancio.version>2.6.0</instancio.version>
+        <instancio.version>2.9.0</instancio.version>
         <jackson.version>2.14.1</jackson.version>
         <junit-jupiter.version>5.9.2</junit-jupiter.version>
     </properties>
-</project>
+</project>