Merge branch 'eugenp:master' into master

core-java-modules/core-java-11-2/pom.xml

@@ -50,6 +50,11 @@
             <version>${junit.jupiter.version}</version>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-lang3</artifactId>
+            <version>${commons-lang3.version}</version>
+        </dependency>
     </dependencies>
 
     <build>
@@ -73,6 +78,7 @@
         <junit.jupiter.version>5.7.0</junit.jupiter.version>
         <assertj.version>3.17.2</assertj.version>
         <mockserver.version>5.11.1</mockserver.version>
+        <commons-lang3.version>3.12.0</commons-lang3.version>
     </properties>
 
 </project>

core-java-modules/core-java-11-2/src/test/java/com/baeldung/version/VersionUnitTest.java

@@ -0,0 +1,48 @@
+package com.baeldung.version;
+
+import org.apache.commons.lang3.SystemUtils;
+import org.assertj.core.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+public class VersionUnitTest {
+
+    @Test
+    public void givenJava_whenUsingRuntime_thenGetVersion() {
+        String expectedVersion = "11";
+        Runtime.Version runtimeVersion = Runtime.version();
+        String version = String.valueOf(runtimeVersion.version().get(0));
+        Assertions.assertThat(version).isEqualTo(expectedVersion);
+    }
+
+    @Test
+    @Disabled("Only valid for Java 8 and lower")
+    public void givenJava_whenUsingCommonsLang_thenGetVersion() {
+        int expectedVersion = 8;
+        String[] versionElements = SystemUtils.JAVA_SPECIFICATION_VERSION.split("\\.");
+        int discard = Integer.parseInt(versionElements[0]);
+        int version;
+        if (discard == 1) {
+            version = Integer.parseInt(versionElements[1]);
+        } else {
+            version = discard;
+        }
+        Assertions.assertThat(version).isEqualTo(expectedVersion);
+    }
+
+    @Test
+    @Disabled("Only valid for Java 8 and lower")
+    public void givenJava_whenUsingSystemProp_thenGetVersion() {
+        int expectedVersion = 8;
+        String[] versionElements = System.getProperty("java.version").split("\\.");
+        int discard = Integer.parseInt(versionElements[0]);
+        int version;
+        if (discard == 1) {
+            version = Integer.parseInt(versionElements[1]);
+        } else {
+            version = discard;
+        }
+        Assertions.assertThat(version).isEqualTo(expectedVersion);
+    }
+}
+

core-java-modules/core-java-lang-oop-patterns/src/main/java/com/baeldung/interfacevsabstractclass/Car.java

@@ -0,0 +1,42 @@
+package com.baeldung.interfacevsabstractclass;
+
+public class Car extends Vehicle {
+
+    public Car(String vechicleName) {
+        super(vechicleName);
+    }
+
+    public Car(String vechicleName, String vehicleModel) {
+        super(vechicleName, vehicleModel);
+    }
+
+    public Car(String vechicleName, String vehicleModel, Long makeYear) {
+        super(vechicleName, vehicleModel, makeYear);
+    }
+
+    @Override
+    protected void start() {
+        // code implementation details on starting a car.
+    }
+
+    @Override
+    protected void stop() {
+        // code implementation details on stopping a car.
+    }
+
+    @Override
+    protected void drive() {
+        // code implementation details on start driving a car.
+    }
+
+    @Override
+    protected void changeGear() {
+        // code implementation details on changing the car gear.
+    }
+
+    @Override
+    protected void reverse() {
+        // code implementation details on reverse driving a car.
+    }
+
+}

core-java-modules/core-java-lang-oop-patterns/src/main/java/com/baeldung/interfacevsabstractclass/ImageSender.java

@@ -0,0 +1,12 @@
+package com.baeldung.interfacevsabstractclass;
+
+import java.io.File;
+
+public class ImageSender implements Sender {
+
+    @Override
+    public void send(File fileToBeSent) {
+        // image sending implementation code.
+    }
+
+}

core-java-modules/core-java-lang-oop-patterns/src/main/java/com/baeldung/interfacevsabstractclass/Sender.java

@@ -0,0 +1,8 @@
+package com.baeldung.interfacevsabstractclass;
+
+import java.io.File;
+
+public interface Sender {
+
+    void send(File fileToBeSent);
+}

core-java-modules/core-java-lang-oop-patterns/src/main/java/com/baeldung/interfacevsabstractclass/Vehicle.java

@@ -0,0 +1,57 @@
+package com.baeldung.interfacevsabstractclass;
+
+public abstract class Vehicle {
+
+    private String vehicleName;
+    private String vehicleModel;
+    private Long makeYear;
+
+    public Vehicle(String vehicleName) {
+        this.vehicleName = vehicleName;
+    }
+
+    public Vehicle(String vehicleName, String vehicleModel) {
+        this(vehicleName);
+        this.vehicleModel = vehicleModel;
+    }
+
+    public Vehicle(String vechicleName, String vehicleModel, Long makeYear) {
+        this(vechicleName, vehicleModel);
+        this.makeYear = makeYear;
+    }
+
+    public String getVehicleName() {
+        return vehicleName;
+    }
+
+    public void setVehicleName(String vehicleName) {
+        this.vehicleName = vehicleName;
+    }
+
+    public String getVehicleModel() {
+        return vehicleModel;
+    }
+
+    public void setVehicleModel(String vehicleModel) {
+        this.vehicleModel = vehicleModel;
+    }
+
+    public Long getMakeYear() {
+        return makeYear;
+    }
+
+    public void setMakeYear(Long makeYear) {
+        this.makeYear = makeYear;
+    }
+
+    protected abstract void start();
+
+    protected abstract void stop();
+
+    protected abstract void drive();
+
+    protected abstract void changeGear();
+
+    protected abstract void reverse();
+
+}

core-java-modules/core-java-lang-oop-patterns/src/main/java/com/baeldung/interfacevsabstractclass/VideoSender.java

@@ -0,0 +1,12 @@
+package com.baeldung.interfacevsabstractclass;
+
+import java.io.File;
+
+public class VideoSender implements Sender {
+
+    @Override
+    public void send(File fileToBeSent) {
+        // video sending implementation code
+    }
+
+}

core-java-modules/core-java-lang-oop-patterns/src/test/java/com/baeldung/interfacevsabstractclass/SenderUnitTest.java

@@ -0,0 +1,23 @@
+package com.baeldung.interfacevsabstractclass;
+
+import static org.junit.jupiter.api.Assertions.*;
+import org.junit.jupiter.api.Test;
+
+import com.baeldung.interfacevsabstractclass.ImageSender;
+import com.baeldung.interfacevsabstractclass.Sender;
+
+import java.io.File;
+
+class SenderUnitTest {
+
+    public final static String IMAGE_FILE_PATH = "/sample_image_file_path/photo.jpg";
+
+    @Test
+    void givenImageUploaded_whenButtonClicked_thenSendImage() {
+        File imageFile = new File(IMAGE_FILE_PATH);
+
+        Sender sender = new ImageSender();
+        sender.send(imageFile);
+    }
+
+}

core-java-modules/core-java-lang-oop-patterns/src/test/java/com/baeldung/interfacevsabstractclass/VehicleUnitTest.java

@@ -0,0 +1,22 @@
+package com.baeldung.interfacevsabstractclass;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+import org.junit.jupiter.api.Test;
+
+import com.baeldung.interfacevsabstractclass.Car;
+import com.baeldung.interfacevsabstractclass.Vehicle;
+
+class VehicleUnitTest {
+
+    @Test
+    void givenVehicle_whenNeedToDrive_thenStart() {
+        Vehicle car = new Car("BMW");
+
+        car.start();
+        car.drive();
+        car.changeGear();
+        car.stop();
+    }
+
+}

core-java-modules/core-java-networking-2/src/test/java/com/baeldung/download/FileDownloadIntegrationTest.java

@@ -17,9 +17,9 @@ import static org.junit.Assert.assertTrue;
 
 public class FileDownloadIntegrationTest {
     
-    static String FILE_URL = "http://ovh.net/files/1Mio.dat";
+    static String FILE_URL = "https://s3.amazonaws.com/baeldung.com/Do+JSON+with+Jackson+by+Baeldung.pdf";
     static String FILE_NAME = "file.dat";
-    static String FILE_MD5_HASH = "6cb91af4ed4c60c11613b75cd1fc6116";
+    static String FILE_MD5_HASH = "c959feb066b37f5c4f0e0f45bbbb4f86";
     
     @Test
     public void givenJavaIO_whenDownloadingFile_thenDownloadShouldBeCorrect() throws NoSuchAlgorithmException, IOException {

core-java-modules/core-java-streams-3/pom.xml

@@ -27,6 +27,17 @@
             <version>${lombok.version}</version>
             <scope>provided</scope>
         </dependency>
+        <dependency>
+            <groupId>org.openjdk.jmh</groupId>
+            <artifactId>jmh-core</artifactId>
+            <version>${jmh.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.openjdk.jmh</groupId>
+            <artifactId>jmh-generator-annprocess</artifactId>
+            <version>${jmh.version}</version>
+            <scope>test</scope>
+        </dependency>
         <!-- test scoped -->
         <dependency>
             <groupId>org.assertj</groupId>
@@ -44,11 +55,30 @@
                 <filtering>true</filtering>
             </resource>
         </resources>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <source>1.8</source>
+                    <target>1.8</target>
+                    <annotationProcessorPaths>
+                        <path>
+                            <groupId>org.openjdk.jmh</groupId>
+                            <artifactId>jmh-generator-annprocess</artifactId>
+                            <version>${jmh.version}</version>
+                        </path>
+                    </annotationProcessorPaths>
+                </configuration>
+            </plugin>
+        </plugins>
     </build>
 
     <properties>
+        <lombok.version>1.18.20</lombok.version>
         <!-- testing -->
         <assertj.version>3.6.1</assertj.version>
+        <jmh.version>1.29</jmh.version>
     </properties>
 
 </project>

core-java-modules/core-java-streams-3/src/main/java/com/baeldung/streams/parallel/BenchmarkRunner.java

@@ -0,0 +1,9 @@
+package com.baeldung.streams.parallel;
+
+public class BenchmarkRunner {
+
+    public static void main(String[] args) throws Exception {
+        org.openjdk.jmh.Main.main(args);
+    }
+
+}

core-java-modules/core-java-streams-3/src/main/java/com/baeldung/streams/parallel/DifferentSourceSplitting.java

@@ -0,0 +1,54 @@
+package com.baeldung.streams.parallel;
+
+import org.openjdk.jmh.annotations.Benchmark;
+import org.openjdk.jmh.annotations.BenchmarkMode;
+import org.openjdk.jmh.annotations.Mode;
+import org.openjdk.jmh.annotations.OutputTimeUnit;
+
+import java.util.ArrayList;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.concurrent.TimeUnit;
+import java.util.stream.IntStream;
+
+public class DifferentSourceSplitting {
+
+    private static final List<Integer> arrayListOfNumbers = new ArrayList<>();
+    private static final List<Integer> linkedListOfNumbers = new LinkedList<>();
+
+    static {
+        IntStream.rangeClosed(1, 1_000_000).forEach(i -> {
+            arrayListOfNumbers.add(i);
+            linkedListOfNumbers.add(i);
+        });
+    }
+
+    @Benchmark
+    @BenchmarkMode(Mode.AverageTime)
+    @OutputTimeUnit(TimeUnit.NANOSECONDS)
+    public static void differentSourceArrayListSequential() {
+        arrayListOfNumbers.stream().reduce(0, Integer::sum);
+    }
+
+    @Benchmark
+    @BenchmarkMode(Mode.AverageTime)
+    @OutputTimeUnit(TimeUnit.NANOSECONDS)
+    public static void differentSourceArrayListParallel() {
+        arrayListOfNumbers.parallelStream().reduce(0, Integer::sum);
+    }
+
+    @Benchmark
+    @BenchmarkMode(Mode.AverageTime)
+    @OutputTimeUnit(TimeUnit.NANOSECONDS)
+    public static void differentSourceLinkedListSequential() {
+        linkedListOfNumbers.stream().reduce(0, Integer::sum);
+    }
+
+    @Benchmark
+    @BenchmarkMode(Mode.AverageTime)
+    @OutputTimeUnit(TimeUnit.NANOSECONDS)
+    public static void differentSourceLinkedListParallel() {
+        linkedListOfNumbers.parallelStream().reduce(0, Integer::sum);
+    }
+
+}

core-java-modules/core-java-streams-3/src/main/java/com/baeldung/streams/parallel/MemoryLocalityCosts.java

@@ -0,0 +1,52 @@
+package com.baeldung.streams.parallel;
+
+import org.openjdk.jmh.annotations.Benchmark;
+import org.openjdk.jmh.annotations.BenchmarkMode;
+import org.openjdk.jmh.annotations.Mode;
+import org.openjdk.jmh.annotations.OutputTimeUnit;
+
+import java.util.Arrays;
+import java.util.concurrent.TimeUnit;
+import java.util.stream.IntStream;
+
+public class MemoryLocalityCosts {
+
+    private static final int[] intArray = new int[1_000_000];
+    private static final Integer[] integerArray = new Integer[1_000_000];
+
+    static {
+        IntStream.rangeClosed(1, 1_000_000).forEach(i -> {
+            intArray[i-1] = i;
+            integerArray[i-1] = i;
+        });
+    }
+
+    @Benchmark
+    @BenchmarkMode(Mode.AverageTime)
+    @OutputTimeUnit(TimeUnit.NANOSECONDS)
+    public static void localityIntArraySequential() {
+        Arrays.stream(intArray).reduce(0, Integer::sum);
+    }
+
+    @Benchmark
+    @BenchmarkMode(Mode.AverageTime)
+    @OutputTimeUnit(TimeUnit.NANOSECONDS)
+    public static void localityIntArrayParallel() {
+        Arrays.stream(intArray).parallel().reduce(0, Integer::sum);
+    }
+
+    @Benchmark
+    @BenchmarkMode(Mode.AverageTime)
+    @OutputTimeUnit(TimeUnit.NANOSECONDS)
+    public static void localityIntegerArraySequential() {
+        Arrays.stream(integerArray).reduce(0, Integer::sum);
+    }
+
+    @Benchmark
+    @BenchmarkMode(Mode.AverageTime)
+    @OutputTimeUnit(TimeUnit.NANOSECONDS)
+    public static void localityIntegerArrayParallel() {
+        Arrays.stream(integerArray).parallel().reduce(0, Integer::sum);
+    }
+
+}

core-java-modules/core-java-streams-3/src/main/java/com/baeldung/streams/parallel/MergingCosts.java

@@ -0,0 +1,52 @@
+package com.baeldung.streams.parallel;
+
+import org.openjdk.jmh.annotations.Benchmark;
+import org.openjdk.jmh.annotations.BenchmarkMode;
+import org.openjdk.jmh.annotations.Mode;
+import org.openjdk.jmh.annotations.OutputTimeUnit;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.concurrent.TimeUnit;
+import java.util.stream.Collectors;
+import java.util.stream.IntStream;
+
+public class MergingCosts {
+
+    private static final List<Integer> arrayListOfNumbers = new ArrayList<>();
+
+    static {
+        IntStream.rangeClosed(1, 1_000_000).forEach(i -> {
+            arrayListOfNumbers.add(i);
+        });
+    }
+
+    @Benchmark
+    @BenchmarkMode(Mode.AverageTime)
+    @OutputTimeUnit(TimeUnit.NANOSECONDS)
+    public static void mergingCostsSumSequential() {
+        arrayListOfNumbers.stream().reduce(0, Integer::sum);
+    }
+
+    @Benchmark
+    @BenchmarkMode(Mode.AverageTime)
+    @OutputTimeUnit(TimeUnit.NANOSECONDS)
+    public static void mergingCostsSumParallel() {
+        arrayListOfNumbers.stream().parallel().reduce(0, Integer::sum);
+    }
+
+    @Benchmark
+    @BenchmarkMode(Mode.AverageTime)
+    @OutputTimeUnit(TimeUnit.NANOSECONDS)
+    public static void mergingCostsGroupingSequential() {
+        arrayListOfNumbers.stream().collect(Collectors.toSet());
+    }
+
+    @Benchmark
+    @BenchmarkMode(Mode.AverageTime)
+    @OutputTimeUnit(TimeUnit.NANOSECONDS)
+    public static void mergingCostsGroupingParallel() {
+        arrayListOfNumbers.stream().parallel().collect(Collectors.toSet());
+    }
+
+}

core-java-modules/core-java-streams-3/src/main/java/com/baeldung/streams/parallel/ParallelStream.java

@@ -0,0 +1,15 @@
+package com.baeldung.streams.parallel;
+
+import java.util.Arrays;
+import java.util.List;
+
+public class ParallelStream {
+
+    public static void main(String[] args) {
+        List<Integer> listOfNumbers = Arrays.asList(1, 2, 3, 4);
+        listOfNumbers.parallelStream().forEach(number ->
+          System.out.println(number + " " + Thread.currentThread().getName())
+        );
+    }
+
+}

core-java-modules/core-java-streams-3/src/main/java/com/baeldung/streams/parallel/SequentialStream.java

@@ -0,0 +1,15 @@
+package com.baeldung.streams.parallel;
+
+import java.util.Arrays;
+import java.util.List;
+
+public class SequentialStream {
+
+    public static void main(String[] args) {
+        List<Integer> listOfNumbers = Arrays.asList(1, 2, 3, 4);
+        listOfNumbers.stream().forEach(number ->
+          System.out.println(number + " " + Thread.currentThread().getName())
+        );
+    }
+
+}

core-java-modules/core-java-streams-3/src/main/java/com/baeldung/streams/parallel/SplittingCosts.java

@@ -0,0 +1,27 @@
+package com.baeldung.streams.parallel;
+
+import org.openjdk.jmh.annotations.Benchmark;
+import org.openjdk.jmh.annotations.BenchmarkMode;
+import org.openjdk.jmh.annotations.Mode;
+import org.openjdk.jmh.annotations.OutputTimeUnit;
+
+import java.util.concurrent.TimeUnit;
+import java.util.stream.IntStream;
+
+public class SplittingCosts {
+
+    @Benchmark
+    @BenchmarkMode(Mode.AverageTime)
+    @OutputTimeUnit(TimeUnit.NANOSECONDS)
+    public static void sourceSplittingIntStreamSequential() {
+        IntStream.rangeClosed(1, 100).reduce(0, Integer::sum);
+    }
+
+    @Benchmark
+    @BenchmarkMode(Mode.AverageTime)
+    @OutputTimeUnit(TimeUnit.NANOSECONDS)
+    public static void sourceSplittingIntStreamParallel() {
+        IntStream.rangeClosed(1, 100).parallel().reduce(0, Integer::sum);
+    }
+
+}

core-java-modules/core-java-streams-3/src/test/java/com/baeldung/streams/parallel/ForkJoinUnitTest.java

@@ -0,0 +1,46 @@
+package com.baeldung.streams.parallel;
+
+import org.junit.jupiter.api.Test;
+
+import java.util.Arrays;
+import java.util.List;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.ForkJoinPool;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class ForkJoinUnitTest {
+
+    @Test
+    void givenSequentialStreamOfNumbers_whenReducingSumWithIdentityFive_thenResultIsCorrect() {
+        List<Integer> listOfNumbers = Arrays.asList(1, 2, 3, 4);
+        int sum = listOfNumbers.stream().reduce(5, Integer::sum);
+        assertThat(sum).isEqualTo(15);
+    }
+
+    @Test
+    void givenParallelStreamOfNumbers_whenReducingSumWithIdentityFive_thenResultIsNotCorrect() {
+        List<Integer> listOfNumbers = Arrays.asList(1, 2, 3, 4);
+        int sum = listOfNumbers.parallelStream().reduce(5, Integer::sum);
+        assertThat(sum).isNotEqualTo(15);
+    }
+
+    @Test
+    void givenParallelStreamOfNumbers_whenReducingSumWithIdentityZero_thenResultIsCorrect() {
+        List<Integer> listOfNumbers = Arrays.asList(1, 2, 3, 4);
+        int sum = listOfNumbers.parallelStream().reduce(0, Integer::sum) + 5;
+        assertThat(sum).isEqualTo(15);
+    }
+
+    @Test
+    public void givenParallelStreamOfNumbers_whenUsingCustomThreadPool_thenResultIsCorrect()
+      throws InterruptedException, ExecutionException {
+        List<Integer> listOfNumbers = Arrays.asList(1, 2, 3, 4);
+        ForkJoinPool customThreadPool = new ForkJoinPool(4);
+        int sum = customThreadPool.submit(
+          () -> listOfNumbers.parallelStream().reduce(0, Integer::sum)).get();
+        customThreadPool.shutdown();
+        assertThat(sum).isEqualTo(10);
+    }
+
+}

core-java-modules/core-java-string-operations-3/src/test/java/com/baeldung/splitkeepdelimiters/SplitAndKeepDelimitersUnitTest.java

@@ -0,0 +1,59 @@
+package com.baeldung.splitkeepdelimiters;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.util.regex.Pattern;
+
+import org.apache.commons.lang3.StringUtils;
+import org.junit.jupiter.api.Test;
+
+import com.google.common.base.Splitter;
+
+public class SplitAndKeepDelimitersUnitTest {
+
+    private final String positivelookAheadRegex = "((?=@))";
+    private final String positivelookBehindRegex = "((?<=@))";
+    private final String positivelookAroundRegex = "((?=@)|(?<=@))";
+    private final String positiveLookAroundMultiDelimiterRegex = "((?=:|#|@)|(?<=:|#|@))";
+
+    private String text = "Hello@World@This@Is@A@Java@Program";
+    private String textMixed = "@HelloWorld@This:Is@A#Java#Program";
+    private String textMixed2 = "pg@no;10@hello;world@this;is@a#10words;Java#Program";
+
+    @Test
+    public void givenString_splitAndKeepDelimiters_using_javaLangString() {
+
+        assertThat(text.split(positivelookAheadRegex)).containsExactly("Hello", "@World", "@This", "@Is", "@A", "@Java", "@Program");
+
+        assertThat(text.split(positivelookBehindRegex)).containsExactly("Hello@", "World@", "This@", "Is@", "A@", "Java@", "Program");
+
+        assertThat(text.split(positivelookAroundRegex)).containsExactly("Hello", "@", "World", "@", "This", "@", "Is", "@", "A", "@", "Java", "@", "Program");
+
+        assertThat(textMixed.split(positiveLookAroundMultiDelimiterRegex)).containsExactly("@", "HelloWorld", "@", "This", ":", "Is", "@", "A", "#", "Java", "#", "Program");
+
+    }
+
+    @Test
+    public void givenString_splitAndKeepDelimiters_using_ApacheCommonsLang3StringUtils() {
+
+        assertThat(StringUtils.splitByCharacterType(textMixed2)).containsExactly("pg", "@", "no", ";", "10", "@", "hello", ";", "world", "@", "this", ";", "is", "@", "a", "#", "10", "words", ";", "J", "ava", "#", "P", "rogram");
+
+    }
+
+    @Test
+    public void givenString_splitAndKeepDelimiters_using_GuavaSplitter() {
+
+        assertThat(Splitter.onPattern(positivelookAroundRegex)
+            .splitToList(text)).containsExactly("Hello", "@", "World", "@", "This", "@", "Is", "@", "A", "@", "Java", "@", "Program");
+
+        assertThat(Splitter.on(Pattern.compile(positivelookAroundRegex))
+            .splitToList(text)).containsExactly("Hello", "@", "World", "@", "This", "@", "Is", "@", "A", "@", "Java", "@", "Program");
+
+        assertThat(Splitter.onPattern(positiveLookAroundMultiDelimiterRegex)
+            .splitToList(textMixed)).containsExactly("@", "HelloWorld", "@", "This", ":", "Is", "@", "A", "#", "Java", "#", "Program");
+
+        assertThat(Splitter.on(Pattern.compile(positiveLookAroundMultiDelimiterRegex))
+            .splitToList(textMixed)).containsExactly("@", "HelloWorld", "@", "This", ":", "Is", "@", "A", "#", "Java", "#", "Program");
+
+    }
+}

couchbase/pom.xml

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project
+<project xmlns="http://maven.apache.org/POM/4.0.0"
-    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>

custom-pmd/pom.xml

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project
+<project xmlns="http://maven.apache.org/POM/4.0.0"
-    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>

dagger/pom.xml

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project
+<project xmlns="http://maven.apache.org/POM/4.0.0"
-    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>

data-structures/pom.xml

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project
+<project xmlns="http://maven.apache.org/POM/4.0.0"
-    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>

ddd/pom.xml

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project
+<project xmlns="http://maven.apache.org/POM/4.0.0"
-    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>
@@ -101,6 +100,5 @@
 
     <properties>
         <joda-money.version>1.0.1</joda-money.version>
-
     </properties>
 </project>

deeplearning4j/pom.xml

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project
+<project xmlns="http://maven.apache.org/POM/4.0.0"
-    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/maven-v4_0_0.xsd">
     <modelVersion>4.0.0</modelVersion>

discord4j/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.baeldung</groupId>
@@ -28,7 +29,6 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-actuator</artifactId>
         </dependency>
-
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-test</artifactId>
@@ -40,7 +40,6 @@
                 </exclusion>
             </exclusions>
         </dependency>
-
         <dependency>
             <groupId>com.discord4j</groupId>
             <artifactId>discord4j-core</artifactId>

disruptor/pom.xml

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project
+<project xmlns="http://maven.apache.org/POM/4.0.0"
-    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>
@@ -87,7 +86,8 @@
                         <configuration>
                             <shadedArtifactAttached>true</shadedArtifactAttached>
                             <transformers>
-                                <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
+                                <transformer
+                                    implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                                     <mainClass>org.baeldung.executable.ExecutableMavenJar</mainClass>
                                 </transformer>
                             </transformers>

dozer/pom.xml

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project
+<project xmlns="http://maven.apache.org/POM/4.0.0"
-    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/maven-v4_0_0.xsd">
     <modelVersion>4.0.0</modelVersion>

drools/pom.xml

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project
+<project xmlns="http://maven.apache.org/POM/4.0.0"
-    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>

dropwizard/pom.xml

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project
+<project xmlns="http://maven.apache.org/POM/4.0.0"
-    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>
@@ -49,8 +48,10 @@
                         </goals>
                         <configuration>
                             <transformers>
-                                <transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer" />
+                                <transformer
-                                <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
+                                    implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer" />
+                                <transformer
+                                    implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                                     <mainClass>com.baeldung.dropwizard.introduction.IntroductionApplication</mainClass>
                                 </transformer>
                             </transformers>

dubbo/pom.xml

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project
+<project xmlns="http://maven.apache.org/POM/4.0.0"
-    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>

ethereum/pom.xml

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project
+<project xmlns="http://maven.apache.org/POM/4.0.0"
-    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>
@@ -16,14 +15,12 @@
     </parent>
 
     <dependencies>
-
         <!-- Spring Boot Dependencies -->
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter</artifactId>
             <version>${spring.boot.version}</version>
         </dependency>
-
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-web</artifactId>
@@ -34,7 +31,6 @@
             <artifactId>spring-boot-starter-tomcat</artifactId>
             <version>${spring.boot.version}</version>
         </dependency>
-
         <!-- Spring Dependencies -->
         <dependency>
             <groupId>org.springframework</groupId>
@@ -51,7 +47,6 @@
             <artifactId>spring-webmvc</artifactId>
             <version>${spring.version}</version>
         </dependency>
-
         <!-- Ethereum -->
         <dependency>
             <groupId>org.ethereum</groupId>
@@ -63,7 +58,6 @@
             <artifactId>core</artifactId>
             <version>${web3j.core.version}</version>
         </dependency>
-
         <!-- Jackson Dependencies -->
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
@@ -80,7 +74,6 @@
             <artifactId>jackson-annotations</artifactId>
             <version>${jackson.version}</version>
         </dependency>
-
         <!-- Servlet -->
         <dependency>
             <groupId>javax.servlet</groupId>
@@ -102,7 +95,6 @@
             <artifactId>javax.servlet.jsp-api</artifactId>
             <version>${javax.servlet.jsp-api.version}</version>
         </dependency>
-
         <!-- Logging -->
         <dependency>
             <groupId>org.slf4j</groupId>
@@ -114,7 +106,6 @@
             <artifactId>logback-classic</artifactId>
             <version>${logback.version}</version>
         </dependency>
-
         <!-- Spring Testing -->
         <dependency>
             <groupId>org.springframework.boot</groupId>
@@ -133,7 +124,6 @@
             <version>${spring.version}</version>
             <scope>test</scope>
         </dependency>
-
         <!-- Testing -->
         <dependency>
             <groupId>org.mockito</groupId>

feign/pom.xml

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-    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>

flyway-cdi-extension/pom.xml

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project
+<project xmlns="http://maven.apache.org/POM/4.0.0"
-    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>

google-cloud/pom.xml

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project
+<project xmlns="http://maven.apache.org/POM/4.0.0"
-    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>

google-web-toolkit/pom.xml

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project
+<project xmlns="http://maven.apache.org/POM/4.0.0"
-    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/maven-v4_0_0.xsd">
     <!-- POM file generated with GWT webAppCreator -->
@@ -54,11 +53,10 @@
     </dependencies>
 
     <build>
-        <!-- Output classes directly into the webapp, so that IDEs and "mvn process-classes" update them in DevMode -->
+        <!-- Output classes directly into the webapp, so that IDEs and "mvn process-classes" update them 
+            in DevMode -->
         <outputDirectory>${project.build.directory}/${project.build.finalName}/WEB-INF/classes</outputDirectory>
-
         <plugins>
-
             <!-- GWT Maven Plugin -->
             <plugin>
                 <groupId>net.ltgt.gwt.maven</groupId>
@@ -76,7 +74,8 @@
                     <moduleName>com.baeldung.Google_web_toolkit</moduleName>
                     <moduleShortName>Google_web_toolkit</moduleShortName>
                     <failOnError>true</failOnError>
-                    <!-- GWT compiler 2.8 requires 1.8, hence define sourceLevel here if you use a different source language for java compilation -->
+                    <!-- GWT compiler 2.8 requires 1.8, hence define sourceLevel here if you use a different 
+                        source language for java compilation -->
                     <sourceLevel>${maven.compiler.source}</sourceLevel>
                     <!-- Compiler configuration -->
                     <compilerArgs>
@@ -93,7 +92,6 @@
                     </startupUrls>
                 </configuration>
             </plugin>
-
             <!-- Skip normal test execution, we use gwt:test instead -->
             <plugin>
                 <artifactId>maven-surefire-plugin</artifactId>
@@ -101,17 +99,14 @@
                     <skip>true</skip>
                 </configuration>
             </plugin>
-
         </plugins>
     </build>
 
     <properties>
-
+        <!-- Setting maven.compiler.source to something different to 1.8 needs that you configure the 
-        <!-- Setting maven.compiler.source to something different to 1.8 needs that you configure the sourceLevel in gwt-maven-plugin since GWT compiler 2.8 requires 1.8 (see gwt-maven-plugin 
+            sourceLevel in gwt-maven-plugin since GWT compiler 2.8 requires 1.8 (see gwt-maven-plugin block below) -->
-            block below) -->
         <maven.compiler.source>1.8</maven.compiler.source>
         <maven.compiler.target>1.8</maven.compiler.target>
-
         <gwt.version>2.8.2</gwt.version>
         <gwt.plugin.version>1.0-rc-8</gwt.plugin.version>
     </properties>

graphql/graphql-java/pom.xml

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project
+<project xmlns="http://maven.apache.org/POM/4.0.0"
-    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>

grpc/pom.xml

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project
+<project xmlns="http://maven.apache.org/POM/4.0.0"
-    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>

gson/pom.xml

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project
+<project xmlns="http://maven.apache.org/POM/4.0.0"
-    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>

guava-modules/guava-18/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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>guava-18</artifactId>

guava-modules/guava-19/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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>guava-19</artifactId>

guava-modules/guava-21/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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>guava-21</artifactId>

guava-modules/guava-collections-list/pom.xml

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project
+<project xmlns="http://maven.apache.org/POM/4.0.0"
-    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>
@@ -27,7 +26,6 @@
             <artifactId>commons-lang3</artifactId>
             <version>${commons-lang3.version}</version>
         </dependency>
-
         <!-- test scoped -->
         <dependency>
             <groupId>org.junit.jupiter</groupId>
@@ -47,7 +45,6 @@
             <version>${assertj.version}</version>
             <scope>test</scope>
         </dependency>
-
         <!-- https://mvnrepository.com/artifact/org.hamcrest/java-hamcrest -->
         <dependency>
             <groupId>org.hamcrest</groupId>
@@ -58,8 +55,7 @@
     </dependencies>
 
     <build>
-        <finalName>guava-collections</finalName>
+        <finalName>guava-collections-list</finalName>
-
         <resources>
             <resource>
                 <directory>src/main/resources</directory>
@@ -71,7 +67,6 @@
     <properties>
         <!-- util -->
         <commons-collections4.version>4.1</commons-collections4.version>
-
         <!-- testing -->
         <assertj.version>3.6.1</assertj.version>
         <java-hamcrest.version>2.0.0.0</java-hamcrest.version>

guava-modules/guava-collections-map/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.baeldung.guava</groupId>
@@ -31,7 +32,6 @@
 
     <build>
         <finalName>guava-collections-map</finalName>
-
         <resources>
             <resource>
                 <directory>src/main/resources</directory>

guava-modules/guava-collections-set/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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>guava-collections-set</artifactId>

guava-modules/guava-collections/pom.xml

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project
+<project xmlns="http://maven.apache.org/POM/4.0.0"
-    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>
@@ -32,7 +31,6 @@
             <artifactId>jool</artifactId>
             <version>${jool.version}</version>
         </dependency>
-
         <!-- test scoped -->
         <dependency>
             <groupId>org.junit.jupiter</groupId>
@@ -52,7 +50,6 @@
             <version>${assertj.version}</version>
             <scope>test</scope>
         </dependency>
-
         <!-- https://mvnrepository.com/artifact/org.hamcrest/java-hamcrest -->
         <dependency>
             <groupId>org.hamcrest</groupId>
@@ -64,7 +61,6 @@
 
     <build>
         <finalName>guava-collections</finalName>
-
         <resources>
             <resource>
                 <directory>src/main/resources</directory>
@@ -77,7 +73,6 @@
         <!-- util -->
         <commons-collections4.version>4.1</commons-collections4.version>
         <jool.version>0.9.12</jool.version>
-
         <!-- testing -->
         <assertj.version>3.6.1</assertj.version>
         <java-hamcrest.version>2.0.0.0</java-hamcrest.version>

guava-modules/guava-core/pom.xml

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project
+<project xmlns="http://maven.apache.org/POM/4.0.0"
-    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>
@@ -31,7 +30,7 @@
     </dependencies>
 
     <build>
-        <finalName>guava</finalName>
+        <finalName>guava-core</finalName>
         <resources>
             <resource>
                 <directory>src/main/resources</directory>

guava-modules/guava-io/pom.xml

@@ -1,12 +1,10 @@
 <?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"
+<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>guava-io</artifactId>
     <version>0.1.0-SNAPSHOT</version>
-    <properties>
-        <junit-jupiter.version>5.6.2</junit-jupiter.version>
-    </properties>
     <name>guava-io</name>
 
     <parent>
@@ -33,7 +31,6 @@
 
     <build>
         <finalName>guava-io</finalName>
-
         <resources>
             <resource>
                 <directory>src/main/resources</directory>
@@ -42,4 +39,8 @@
         </resources>
     </build>
 
+    <properties>
+        <junit-jupiter.version>5.6.2</junit-jupiter.version>
+    </properties>
+
 </project>

guava-modules/guava-utilities/pom.xml

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project
+<project xmlns="http://maven.apache.org/POM/4.0.0"
-    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>
@@ -21,7 +20,6 @@
             <artifactId>commons-lang3</artifactId>
             <version>${commons-lang3.version}</version>
         </dependency>
-
         <!-- test scoped -->
         <dependency>
             <groupId>org.junit.jupiter</groupId>
@@ -44,8 +42,7 @@
     </dependencies>
 
     <build>
-        <finalName>guava</finalName>
+        <finalName>guava-utilities</finalName>
-
         <resources>
             <resource>
                 <directory>src/main/resources</directory>

guava-modules/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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>guava-modules</artifactId>

guice/pom.xml

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project
+<project xmlns="http://maven.apache.org/POM/4.0.0"
-    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>

hazelcast/pom.xml

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project
+<project xmlns="http://maven.apache.org/POM/4.0.0"
-        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>

helidon/helidon-mp/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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>helidon-mp</artifactId>

helidon/helidon-se/pom.xml

@@ -19,7 +19,6 @@
             <artifactId>helidon-config-yaml</artifactId>
             <version>${helidon.version}</version>
         </dependency>
-
         <!--WebServer -->
         <dependency>
             <groupId>io.helidon.webserver</groupId>
@@ -37,7 +36,6 @@
             <artifactId>helidon-webserver-json</artifactId>
             <version>${helidon.version}</version>
         </dependency>
-
         <!--Security -->
         <dependency>
             <groupId>io.helidon.security</groupId>

helidon/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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.helidon</groupId>

httpclient-2/pom.xml

@@ -26,7 +26,6 @@
                 </exclusion>
             </exclusions>
         </dependency>
-
         <!-- rest template -->
         <dependency>
             <groupId>org.springframework.boot</groupId>

httpclient-simple/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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>httpclient-simple</artifactId>
@@ -15,9 +16,7 @@
     </parent>
 
     <dependencies>
-
         <!-- Spring Security -->
-
         <dependency>
             <groupId>org.springframework.security</groupId>
             <artifactId>spring-security-web</artifactId>
@@ -28,9 +27,7 @@
             <artifactId>spring-security-config</artifactId>
             <version>${spring-security.version}</version>
         </dependency>
-
         <!-- Spring -->
-
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-core</artifactId>
@@ -72,7 +69,6 @@
             <artifactId>spring-expression</artifactId>
             <version>${spring.version}</version>
         </dependency>
-
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-web</artifactId>
@@ -83,21 +79,17 @@
             <artifactId>spring-webmvc</artifactId>
             <version>${spring.version}</version>
         </dependency>
-
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-oxm</artifactId>
             <version>${spring.version}</version>
         </dependency>
-
         <!-- marshalling -->
-
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
             <artifactId>jackson-databind</artifactId>
             <version>${jackson.version}</version>
         </dependency>
-
         <dependency>
             <groupId>org.apache.httpcomponents</groupId>
             <artifactId>httpcore</artifactId>
@@ -109,7 +101,6 @@
                 </exclusion>
             </exclusions>
         </dependency>
-
         <!-- utils -->
         <dependency>
             <groupId>org.apache.commons</groupId>
@@ -166,33 +157,26 @@
             <version>${wiremock.version}</version>
             <scope>test</scope>
         </dependency>
-
         <!-- web -->
-
         <dependency>
             <groupId>javax.servlet</groupId>
             <artifactId>javax.servlet-api</artifactId>
             <version>${javax.servlet-api.version}</version>
             <scope>provided</scope>
         </dependency>
-
         <dependency>
             <groupId>javax.servlet</groupId>
             <artifactId>jstl</artifactId>
             <version>${jstl.version}</version>
             <scope>runtime</scope>
         </dependency>
-
         <!-- util -->
-
         <dependency>
             <groupId>com.google.guava</groupId>
             <artifactId>guava</artifactId>
             <version>${guava.version}</version>
         </dependency>
-
         <!-- test scoped -->
-
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-test</artifactId>
@@ -209,7 +193,6 @@
                 <filtering>true</filtering>
             </resource>
         </resources>
-
         <plugins>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
@@ -264,7 +247,6 @@
                             </execution>
                         </executions>
                     </plugin>
-
                     <plugin>
                         <groupId>org.apache.maven.plugins</groupId>
                         <artifactId>maven-surefire-plugin</artifactId>
@@ -288,7 +270,6 @@
                             </execution>
                         </executions>
                     </plugin>
-
                 </plugins>
             </build>
         </profile>

httpclient/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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>httpclient</artifactId>

hystrix/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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/maven-v4_0_0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <artifactId>hystrix</artifactId>

image-processing/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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>image-processing</artifactId>

immutables/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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>immutables</artifactId>

jackson-modules/jackson-annotations/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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>jackson-annotations</artifactId>

jackson-modules/jackson-conversions-2/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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>jackson-conversions-2</artifactId>

jackson-modules/jackson-conversions/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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>jackson-conversions</artifactId>

jackson-modules/jackson-custom-conversions/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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>jackson-custom-conversions</artifactId>
@@ -28,8 +29,6 @@
             <artifactId>jackson-core</artifactId>
             <version>${jackson.version}</version>
         </dependency>
-
-
     </dependencies>
 
     <build>

jackson-modules/jackson-exceptions/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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>jackson-exceptions</artifactId>

jackson-modules/jackson/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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>jackson</artifactId>
@@ -19,41 +20,34 @@
             <artifactId>jackson-datatype-jsr310</artifactId>
             <version>${jackson.version}</version>
         </dependency>
-
         <dependency>
             <groupId>com.fasterxml.jackson.datatype</groupId>
             <artifactId>jackson-datatype-joda</artifactId>
             <version>${jackson.version}</version>
         </dependency>
-
         <dependency>
             <groupId>com.fasterxml.jackson.module</groupId>
             <artifactId>jackson-module-jsonSchema</artifactId>
             <version>${jackson.version}</version>
         </dependency>
-
         <dependency>
             <groupId>com.fasterxml.jackson.datatype</groupId>
             <artifactId>jackson-datatype-jdk8</artifactId>
             <version>${jackson.version}</version>
         </dependency>
-
         <!-- test scoped -->
-
         <dependency>
             <groupId>io.rest-assured</groupId>
             <artifactId>json-schema-validator</artifactId>
             <version>${rest-assured.version}</version>
             <scope>test</scope>
         </dependency>
-
         <dependency>
             <groupId>io.rest-assured</groupId>
             <artifactId>json-path</artifactId>
             <version>${rest-assured.version}</version>
             <scope>test</scope>
         </dependency>
-
         <dependency>
             <groupId>org.assertj</groupId>
             <artifactId>assertj-core</artifactId>

jackson-modules/pom.xml

@@ -35,7 +35,6 @@
             <artifactId>jackson-dataformat-xml</artifactId>
             <version>${jackson.version}</version>
         </dependency>
-
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter</artifactId>
@@ -53,4 +52,5 @@
     <properties>
         <junit-jupiter.version>5.6.2</junit-jupiter.version>
     </properties>
+
 </project>

jackson-simple/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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>jackson-simple</artifactId>
@@ -20,7 +21,6 @@
             <artifactId>jackson-dataformat-xml</artifactId>
             <version>${jackson.version}</version>
         </dependency>
-
         <!-- test scoped -->
         <dependency>
             <groupId>org.junit.jupiter</groupId>
@@ -44,7 +44,6 @@
 
     <build>
         <finalName>jackson-simple</finalName>
-
         <resources>
             <resource>
                 <directory>src/main/resources</directory>

java-collections-conversions-2/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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>java-collections-conversions-2</artifactId>

java-collections-conversions/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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>java-collections-conversions</artifactId>
@@ -40,4 +41,5 @@
     <properties>
         <commons-collections4.version>4.1</commons-collections4.version>
     </properties>
+    
 </project>

java-collections-maps-3/pom.xml

@@ -2,6 +2,12 @@
 <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>java-collections-maps-3</artifactId>
+    <version>0.1.0-SNAPSHOT</version>
+    <name>java-collections-maps-3</name>
+    <packaging>jar</packaging>
+
     <parent>
         <groupId>com.baeldung</groupId>
         <artifactId>parent-java</artifactId>
@@ -9,12 +15,6 @@
         <relativePath>../parent-java</relativePath>
     </parent>
 
-    <modelVersion>4.0.0</modelVersion>
-    <artifactId>java-collections-maps-3</artifactId>
-    <version>0.1.0-SNAPSHOT</version>
-    <name>java-collections-maps-3</name>
-    <packaging>jar</packaging>
-
     <dependencies>
         <dependency>
             <groupId>org.springframework</groupId>

java-ee-8-security-api/app-auth-basic-store-db/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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>app-auth-basic-store-db</artifactId>

java-ee-8-security-api/app-auth-custom-form-store-custom/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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>app-auth-custom-form-store-custom</artifactId>

java-ee-8-security-api/app-auth-custom-no-store/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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>app-auth-custom-no-store</artifactId>

java-ee-8-security-api/app-auth-form-store-ldap/pom.xml

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project
+<project xmlns="http://maven.apache.org/POM/4.0.0"
-    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>

java-native/pom.xml

@@ -12,10 +12,6 @@
         <version>1.0.0-SNAPSHOT</version>
     </parent>
 
-    <properties>
-        <jna.version>5.6.0</jna.version>
-    </properties>
-
     <dependencies>
         <dependency>
             <groupId>net.java.dev.jna</groupId>
@@ -36,4 +32,9 @@
             </plugin>
         </plugins>
     </build>
+
+    <properties>
+        <jna.version>5.6.0</jna.version>
+    </properties>
+
 </project>

java-rmi/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.baeldung.rmi</groupId>

java-spi/exchange-rate-api/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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>exchange-rate-api</artifactId>

java-spi/exchange-rate-app/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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>exchange-rate-app</artifactId>

java-spi/exchange-rate-impl/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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>exchange-rate-impl</artifactId>

java-spi/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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>java-spi</artifactId>

java-vavr-stream/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.baeldung.samples</groupId>

java-websocket/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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/maven-v4_0_0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <artifactId>java-websocket</artifactId>

javafx/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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>javafx</artifactId>

javax-servlets/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.baeldung.javax-servlets</groupId>
@@ -21,21 +22,18 @@
             <version>${assertj.version}</version>
             <scope>test</scope>
         </dependency>
-
         <!-- File Uploading -->
         <dependency>
             <groupId>commons-fileupload</groupId>
             <artifactId>commons-fileupload</artifactId>
             <version>${commons-fileupload.version}</version>
         </dependency>
-
         <!-- Servlet -->
         <dependency>
             <groupId>javax.servlet</groupId>
             <artifactId>javax.servlet-api</artifactId>
             <version>${javax.servlet-api.version}</version>
         </dependency>
-
         <dependency>
             <groupId>org.apache.httpcomponents</groupId>
             <artifactId>httpclient</artifactId>

javaxval/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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>javaxval</artifactId>

javaxval/src/test/java/com/baeldung/javaxval/bigdecimal/InvoiceUnitTest.java

@@ -1,18 +1,17 @@
 package com.baeldung.javaxval.bigdecimal;
 
-import static org.assertj.core.api.Assertions.assertThat;
-
-import java.math.BigDecimal;
-import java.util.Set;
-
-import javax.validation.ConstraintViolation;
-import javax.validation.Validation;
-import javax.validation.Validator;
-
 import com.baeldung.javaxval.LocaleAwareUnitTest;
 import org.junit.BeforeClass;
 import org.junit.Test;
 
+import javax.validation.ConstraintViolation;
+import javax.validation.Validation;
+import javax.validation.Validator;
+import java.math.BigDecimal;
+import java.util.Set;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
 public class InvoiceUnitTest extends LocaleAwareUnitTest {
 
     private static Validator validator;
@@ -24,41 +23,67 @@ public class InvoiceUnitTest extends LocaleAwareUnitTest {
     }
 
     @Test
-    public void whenPriceIntegerDigitLessThanThreeWithDecimalValue_thenShouldGiveConstraintViolations() {
+    public void whenLessThanThreeIntegerDigits_thenShouldNotGiveConstraintViolations() {
-        Invoice invoice = new Invoice(new BigDecimal(10.21), "Book purchased");
+        Invoice invoice = new Invoice(new BigDecimal("10.21"), "Book purchased");
         Set<ConstraintViolation<Invoice>> violations = validator.validate(invoice);
-        assertThat(violations.size()).isEqualTo(1);
+        assertThat(violations).isEmpty();
-        violations.forEach(action -> assertThat(action.getMessage()).isEqualTo("numeric value out of bounds (<3 digits>.<2 digits> expected)"));
     }
 
     @Test
-    public void whenPriceIntegerDigitLessThanThreeWithIntegerValue_thenShouldNotGiveConstraintViolations() {
+    public void whenThreeIntegerDigits_thenShouldNotGiveConstraintViolations() {
-        Invoice invoice = new Invoice(new BigDecimal(10), "Book purchased");
+        Invoice invoice = new Invoice(new BigDecimal("102.21"), "Book purchased");
         Set<ConstraintViolation<Invoice>> violations = validator.validate(invoice);
-        assertThat(violations.size()).isEqualTo(0);
+        assertThat(violations).isEmpty();
     }
 
     @Test
-    public void whenPriceIntegerDigitGreaterThanThree_thenShouldGiveConstraintViolations() {
+    public void whenMoreThanThreeIntegerDigits_thenShouldGiveConstraintViolations() {
-        Invoice invoice = new Invoice(new BigDecimal(1021.21), "Book purchased");
+        Invoice invoice = new Invoice(new BigDecimal("1021.21"), "Book purchased");
         Set<ConstraintViolation<Invoice>> violations = validator.validate(invoice);
-        assertThat(violations.size()).isEqualTo(1);
+        assertThat(violations).hasSize(1);
-        violations.forEach(action -> assertThat(action.getMessage()).isEqualTo("numeric value out of bounds (<3 digits>.<2 digits> expected)"));
+        assertThat(violations)
+            .extracting("message")
+            .containsOnly("numeric value out of bounds (<3 digits>.<2 digits> expected)");
+    }
+
+    @Test
+    public void whenLessThanTwoFractionDigits_thenShouldNotGiveConstraintViolations() {
+        Invoice invoice = new Invoice(new BigDecimal("99.9"), "Book purchased");
+        Set<ConstraintViolation<Invoice>> violations = validator.validate(invoice);
+        assertThat(violations).isEmpty();
+    }
+
+    @Test
+    public void whenTwoFractionDigits_thenShouldNotGiveConstraintViolations() {
+        Invoice invoice = new Invoice(new BigDecimal("99.99"), "Book purchased");
+        Set<ConstraintViolation<Invoice>> violations = validator.validate(invoice);
+        assertThat(violations).isEmpty();
+    }
+
+    @Test
+    public void whenMoreThanTwoFractionDigits_thenShouldGiveConstraintViolations() {
+        Invoice invoice = new Invoice(new BigDecimal("99.999"), "Book purchased");
+        Set<ConstraintViolation<Invoice>> violations = validator.validate(invoice);
+        assertThat(violations).hasSize(1);
+        assertThat(violations)
+            .extracting("message")
+            .containsOnly("numeric value out of bounds (<3 digits>.<2 digits> expected)");
     }
 
     @Test
     public void whenPriceIsZero_thenShouldGiveConstraintViolations() {
-        Invoice invoice = new Invoice(new BigDecimal(000.00), "Book purchased");
+        Invoice invoice = new Invoice(new BigDecimal("0.00"), "Book purchased");
         Set<ConstraintViolation<Invoice>> violations = validator.validate(invoice);
-        assertThat(violations.size()).isEqualTo(1);
+        assertThat(violations).hasSize(1);
-        violations.forEach(action -> assertThat(action.getMessage()).isEqualTo("must be greater than 0.0"));
+        assertThat(violations)
+            .extracting("message")
+            .containsOnly("must be greater than 0.0");
     }
 
     @Test
     public void whenPriceIsGreaterThanZero_thenShouldNotGiveConstraintViolations() {
-        Invoice invoice = new Invoice(new BigDecimal(100.50), "Book purchased");
+        Invoice invoice = new Invoice(new BigDecimal("100.50"), "Book purchased");
         Set<ConstraintViolation<Invoice>> violations = validator.validate(invoice);
-        assertThat(violations.size()).isEqualTo(0);
+        assertThat(violations).isEmpty();
     }
-
 }

jaxb/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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>jaxb</artifactId>
@@ -34,7 +35,6 @@
                 <filtering>true</filtering>
             </resource>
         </resources>
-
         <pluginManagement>
             <plugins>
                 <plugin>
@@ -64,9 +64,7 @@
                 </plugin>
             </plugins>
         </pluginManagement>
-
         <plugins>
-
             <!-- xjc -->
             <plugin>
                 <groupId>org.codehaus.mojo</groupId>

jee-7-security/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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>jee-7-security</artifactId>

jee-7/pom.xml

@@ -41,7 +41,6 @@
             <version>${javaee_api.version}</version>
             <scope>provided</scope>
         </dependency>
-
         <dependency>
             <groupId>org.jboss.arquillian.junit</groupId>
             <artifactId>arquillian-junit-container</artifactId>
@@ -60,14 +59,12 @@
             <version>${awaitility.version}</version>
             <scope>test</scope>
         </dependency>
-
         <dependency>
             <groupId>org.jboss.shrinkwrap.resolver</groupId>
             <artifactId>shrinkwrap-resolver-impl-maven</artifactId>
             <scope>test</scope>
             <type>jar</type>
         </dependency>
-
         <dependency>
             <groupId>org.jboss.shrinkwrap.resolver</groupId>
             <artifactId>shrinkwrap-resolver-impl-maven-archive</artifactId>
@@ -114,7 +111,6 @@
             <artifactId>standard</artifactId>
             <version>${taglibs.standard.version}</version>
         </dependency>
-
         <dependency>
             <groupId>javax.mvc</groupId>
             <artifactId>javax.mvc-api</artifactId>
@@ -125,13 +121,11 @@
             <artifactId>ozark</artifactId>
             <version>${ozark.version}</version>
         </dependency>
-
         <dependency>
             <groupId>org.springframework.security</groupId>
             <artifactId>spring-security-web</artifactId>
             <version>${org.springframework.security.version}</version>
         </dependency>
-
         <dependency>
             <groupId>org.springframework.security</groupId>
             <artifactId>spring-security-config</artifactId>
@@ -143,7 +137,6 @@
             <version>${org.springframework.security.version}</version>
         </dependency>
         <!-- Batch dependencies -->
-
         <dependency>
             <groupId>org.jboss.spec.javax.batch</groupId>
             <artifactId>jboss-batch-api_1.0_spec</artifactId>
@@ -210,8 +203,8 @@
         </plugins>
         <pluginManagement>
             <plugins>
-                <!--This plugin's configuration is used to store Eclipse m2e settings
+                <!--This plugin's configuration is used to store Eclipse m2e settings only. It has no 
-                    only. It has no influence on the Maven build itself. -->
+                    influence on the Maven build itself. -->
                 <plugin>
                     <groupId>org.eclipse.m2e</groupId>
                     <artifactId>lifecycle-mapping</artifactId>

jersey/pom.xml

@@ -1,6 +1,7 @@
 <?xml version="1.0"?>
-<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
+<project
-         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"
+    xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
     <modelVersion>4.0.0</modelVersion>
     <artifactId>jersey</artifactId>
     <version>0.0.1-SNAPSHOT</version>

jgit/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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>jgit</artifactId>

jgroups/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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>jgroups</artifactId>

jib/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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>jib</artifactId>

jjwt/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <groupId>io.jsonwebtoken</groupId>
@@ -20,28 +21,23 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-devtools</artifactId>
         </dependency>
-
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-thymeleaf</artifactId>
         </dependency>
-
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-security</artifactId>
         </dependency>
-        
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-web</artifactId>
         </dependency>
-
         <dependency>
             <groupId>io.jsonwebtoken</groupId>
             <artifactId>jjwt</artifactId>
             <version>${jjwt.version}</version>
         </dependency>
-
         <dependency>
             <groupId>org.assertj</groupId>
             <artifactId>assertj-core</artifactId>

jmeter/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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>jmeter</artifactId>
@@ -40,7 +41,6 @@
                 <groupId>org.springframework.boot</groupId>
                 <artifactId>spring-boot-maven-plugin</artifactId>
             </plugin>
-
             <plugin>
                 <groupId>com.lazerycode.jmeter</groupId>
                 <artifactId>jmeter-maven-plugin</artifactId>

jmh/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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/maven-v4_0_0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <artifactId>jmh</artifactId>
@@ -47,7 +48,6 @@
                     </archive>
                 </configuration>
             </plugin>
-
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-assembly-plugin</artifactId>

jooby/pom.xml

@@ -1,5 +1,6 @@
 <?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"
+<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/maven-v4_0_0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.baeldung.jooby</groupId>