Merge remote-tracking branch 'upstream/master'

apache-olingo/pom.xml

@@ -83,4 +83,4 @@
         <olingo.version>2.0.11</olingo.version>
     </properties>
 
-</project>
+</project>

core-java-modules/core-java-9-new-features/pom.xml

@@ -34,6 +34,28 @@
         </dependency>
     </dependencies>
 
+    <build>
+        <finalName>core-java-9-new-features</finalName>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>${maven-compiler-plugin.version}</version>
+                <configuration>
+                    <source>${maven.compiler.source}</source>
+                    <target>${maven.compiler.target}</target>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+    <pluginRepositories>
+        <pluginRepository>
+            <id>apache.snapshots</id>
+            <url>https://repository.apache.org/snapshots/</url>
+        </pluginRepository>
+    </pluginRepositories>
+
     <profiles>
         <profile>
             <id>incubator-features</id>
@@ -126,28 +148,6 @@
         </profile>
     </profiles>
 
-    <build>
-        <finalName>core-java-9-new-features</finalName>
-        <plugins>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-compiler-plugin</artifactId>
-                <version>${maven-compiler-plugin.version}</version>
-                <configuration>
-                    <source>${maven.compiler.source}</source>
-                    <target>${maven.compiler.target}</target>
-                </configuration>
-            </plugin>
-        </plugins>
-    </build>
-
-    <pluginRepositories>
-        <pluginRepository>
-            <id>apache.snapshots</id>
-            <url>https://repository.apache.org/snapshots/</url>
-        </pluginRepository>
-    </pluginRepositories>
-
     <properties>
         <rxjava.version>3.0.0</rxjava.version>
         <awaitility.version>4.0.2</awaitility.version>

core-java-modules/core-java-concurrency-advanced-4/README.md

@@ -5,3 +5,4 @@
 - [Start Two Threads at the Exact Same Time in Java](https://www.baeldung.com/java-start-two-threads-at-same-time)
 - [Volatile Variables and Thread Safety](https://www.baeldung.com/java-volatile-variables-thread-safety)
 - [Producer-Consumer Problem With Example in Java](https://www.baeldung.com/java-producer-consumer-problem)
+- [Acquire a Lock by a Key in Java](https://www.baeldung.com/java-acquire-lock-by-key)

core-java-modules/core-java-concurrency-advanced-4/src/main/java/com/baeldung/producerconsumer/Consumer.java

@@ -0,0 +1,51 @@
+package com.baeldung.producerconsumer;
+
+public class Consumer implements Runnable {
+    private final DataQueue dataQueue;
+    private volatile boolean runFlag;
+
+    public Consumer(DataQueue dataQueue) {
+        this.dataQueue = dataQueue;
+        runFlag = true;
+    }
+
+    @Override
+    public void run() {
+        consume();
+    }
+
+    public void consume() {
+        while (runFlag) {
+            Message message;
+            if (dataQueue.isEmpty()) {
+                try {
+                    dataQueue.waitOnEmpty();
+                } catch (InterruptedException e) {
+                    e.printStackTrace();
+                    break;
+                }
+            }
+            if (!runFlag) {
+                break;
+            }
+            message = dataQueue.remove();
+            dataQueue.notifyAllForFull();
+            useMessage(message);
+        }
+        System.out.println("Consumer Stopped");
+    }
+
+    private void useMessage(Message message) {
+        if (message != null) {
+            System.out.printf("[%s] Consuming Message. Id: %d, Data: %f\n", Thread.currentThread().getName(), message.getId(), message.getData());
+
+            //Sleeping on random time to make it realistic
+            ThreadUtil.sleep((long) (message.getData() * 100));
+        }
+    }
+
+    public void stop() {
+        runFlag = false;
+        dataQueue.notifyAllForEmpty();
+    }
+}

core-java-modules/core-java-concurrency-advanced-4/src/main/java/com/baeldung/producerconsumer/DataQueue.java

@@ -0,0 +1,59 @@
+package com.baeldung.producerconsumer;
+
+import java.util.LinkedList;
+import java.util.Queue;
+
+public class DataQueue {
+    private final Queue<Message> queue = new LinkedList<>();
+    private final int maxSize;
+    private final Object FULL_QUEUE = new Object();
+    private final Object EMPTY_QUEUE = new Object();
+
+    DataQueue(int maxSize) {
+        this.maxSize = maxSize;
+    }
+
+    public boolean isFull() {
+        return queue.size() == maxSize;
+    }
+
+    public boolean isEmpty() {
+        return queue.isEmpty();
+    }
+
+    public void waitOnFull() throws InterruptedException {
+        synchronized (FULL_QUEUE) {
+            FULL_QUEUE.wait();
+        }
+    }
+
+    public void waitOnEmpty() throws InterruptedException {
+        synchronized (EMPTY_QUEUE) {
+            EMPTY_QUEUE.wait();
+        }
+    }
+
+    public void notifyAllForFull() {
+        synchronized (FULL_QUEUE) {
+            FULL_QUEUE.notifyAll();
+        }
+    }
+
+    public void notifyAllForEmpty() {
+        synchronized (EMPTY_QUEUE) {
+            EMPTY_QUEUE.notifyAll();
+        }
+    }
+
+    public void add(Message message) {
+        synchronized (queue) {
+            queue.add(message);
+        }
+    }
+
+    public Message remove() {
+        synchronized (queue) {
+            return queue.poll();
+        }
+    }
+}

core-java-modules/core-java-concurrency-advanced-4/src/main/java/com/baeldung/producerconsumer/Message.java

@@ -0,0 +1,27 @@
+package com.baeldung.producerconsumer;
+
+public class Message {
+    private int id;
+    private double data;
+
+    public Message(int id, double data) {
+        this.id = id;
+        this.data = data;
+    }
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public double getData() {
+        return data;
+    }
+
+    public void setData(double data) {
+        this.data = data;
+    }
+}

core-java-modules/core-java-concurrency-advanced-4/src/main/java/com/baeldung/producerconsumer/Producer.java

@@ -0,0 +1,53 @@
+package com.baeldung.producerconsumer;
+
+public class Producer implements Runnable {
+    private final DataQueue dataQueue;
+    private volatile boolean runFlag;
+
+    private static int idSequence = 0;
+
+    public Producer(DataQueue dataQueue) {
+        this.dataQueue = dataQueue;
+        runFlag = true;
+    }
+
+    @Override
+    public void run() {
+        produce();
+    }
+
+    public void produce() {
+        while (runFlag) {
+            Message message = generateMessage();
+            while (dataQueue.isFull()) {
+                try {
+                    dataQueue.waitOnFull();
+                } catch (InterruptedException e) {
+                    e.printStackTrace();
+                    break;
+                }
+            }
+            if (!runFlag) {
+                break;
+            }
+            dataQueue.add(message);
+            dataQueue.notifyAllForEmpty();
+        }
+        System.out.println("Producer Stopped");
+    }
+
+    private Message generateMessage() {
+        Message message = new Message(++idSequence, Math.random());
+        System.out.printf("[%s] Generated Message. Id: %d, Data: %f\n", Thread.currentThread().getName(), message.getId(), message.getData());
+
+        //Sleeping on random time to make it realistic
+        ThreadUtil.sleep((long) (message.getData() * 100));
+
+        return message;
+    }
+
+    public void stop() {
+        runFlag = false;
+        dataQueue.notifyAllForFull();
+    }
+}

core-java-modules/core-java-concurrency-advanced-4/src/main/java/com/baeldung/producerconsumer/ProducerConsumerDemonstrator.java

@@ -0,0 +1,69 @@
+package com.baeldung.producerconsumer;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import static com.baeldung.producerconsumer.ThreadUtil.*;
+
+public class ProducerConsumerDemonstrator {
+    private static final int MAX_QUEUE_CAPACITY = 5;
+
+    public static void demoSingleProducerAndSingleConsumer() {
+        DataQueue dataQueue = new DataQueue(MAX_QUEUE_CAPACITY);
+
+        Producer producer = new Producer(dataQueue);
+        Thread producerThread = new Thread(producer);
+
+        Consumer consumer = new Consumer(dataQueue);
+        Thread consumerThread = new Thread(consumer);
+
+        producerThread.start();
+        consumerThread.start();
+
+        List<Thread> threads = new ArrayList<>();
+        threads.add(producerThread);
+        threads.add(consumerThread);
+
+        // let threads run for two seconds
+        sleep(2000);
+
+        // Stop threads
+        producer.stop();
+        consumer.stop();
+
+        waitForAllThreadsToComplete(threads);
+    }
+
+    public static void demoMultipleProducersAndMultipleConsumers() {
+        DataQueue dataQueue = new DataQueue(MAX_QUEUE_CAPACITY);
+        int producerCount = 3;
+        int consumerCount = 3;
+        List<Thread> threads = new ArrayList<>();
+        Producer producer = new Producer(dataQueue);
+        for(int i = 0; i < producerCount; i++) {
+            Thread producerThread = new Thread(producer);
+            producerThread.start();
+            threads.add(producerThread);
+        }
+        Consumer consumer = new Consumer(dataQueue);
+        for(int i = 0; i < consumerCount; i++) {
+            Thread consumerThread = new Thread(consumer);
+            consumerThread.start();
+            threads.add(consumerThread);
+        }
+
+        // let threads run for two seconds
+        sleep(2000);
+
+        // Stop threads
+        producer.stop();
+        consumer.stop();
+
+        waitForAllThreadsToComplete(threads);
+    }
+
+    public static void main(String[] args) {
+        demoSingleProducerAndSingleConsumer();
+        demoMultipleProducersAndMultipleConsumers();
+    }
+}

core-java-modules/core-java-concurrency-advanced-4/src/main/java/com/baeldung/producerconsumer/SimpleProducerConsumerDemonstrator.java

@@ -0,0 +1,60 @@
+package com.baeldung.producerconsumer;
+
+import java.util.concurrent.BlockingQueue;
+import java.util.concurrent.LinkedBlockingDeque;
+
+import static com.baeldung.producerconsumer.ThreadUtil.sleep;
+
+public class SimpleProducerConsumerDemonstrator {
+    BlockingQueue<Double> blockingQueue = new LinkedBlockingDeque<>(5);
+
+    private void produce() {
+        while (true) {
+            double value = generateValue();
+            try {
+                blockingQueue.put(value);
+            } catch (InterruptedException e) {
+                e.printStackTrace();
+                break;
+            }
+            System.out.printf("[%s] Value produced: %f\n", Thread.currentThread().getName(), value);
+        }
+    }
+
+    private void consume() {
+        while (true) {
+            Double value;
+            try {
+                value = blockingQueue.take();
+            } catch (InterruptedException e) {
+                e.printStackTrace();
+                break;
+            }
+            // Consume value
+            System.out.printf("[%s] Value consumed: %f\n", Thread.currentThread().getName(), value);
+        }
+    }
+
+    private double generateValue() {
+        return Math.random();
+    }
+
+    private void runProducerConsumer() {
+        for (int i = 0; i < 2; i++) {
+            Thread producerThread = new Thread(this::produce);
+            producerThread.start();
+        }
+
+        for (int i = 0; i < 3; i++) {
+            Thread consumerThread = new Thread(this::consume);
+            consumerThread.start();
+        }
+    }
+
+    public static void main(String[] args) {
+        SimpleProducerConsumerDemonstrator simpleProducerConsumerDemonstrator = new SimpleProducerConsumerDemonstrator();
+        simpleProducerConsumerDemonstrator.runProducerConsumer();
+        sleep(2000);
+        System.exit(0);
+    }
+}

core-java-modules/core-java-concurrency-advanced-4/src/main/java/com/baeldung/producerconsumer/ThreadUtil.java

@@ -0,0 +1,24 @@
+package com.baeldung.producerconsumer;
+
+import java.util.List;
+
+public class ThreadUtil {
+    public static void waitForAllThreadsToComplete(List<Thread> threads) {
+        for(Thread thread: threads) {
+            try {
+                thread.join();
+            } catch (InterruptedException e) {
+                e.printStackTrace();
+            }
+        }
+    }
+
+    public static void sleep(long interval) {
+        try {
+            // Wait for some time to demonstrate threads
+            Thread.sleep(interval);
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        }
+    }
+}

core-java-modules/core-java-concurrency-basic-3/pom.xml

@@ -24,4 +24,4 @@
         </resources>
     </build>
 
-</project>
+</project>

core-java-modules/core-java-date-operations-1/pom.xml

@@ -25,7 +25,6 @@
             <artifactId>commons-lang3</artifactId>
             <version>${commons-lang3.version}</version>
         </dependency>
-
         <dependency>
             <groupId>com.darwinsys</groupId>
             <artifactId>hirondelle-date4j</artifactId>

core-java-modules/core-java-exceptions-4/README.md

@@ -2,3 +2,4 @@
 
 - [Java ArrayIndexOutOfBoundsException](https://www.baeldung.com/java-arrayindexoutofboundsexception)
 - [Java Missing Return Statement](https://www.baeldung.com/java-missing-return-statement)
+- [Convert long to int Type in Java](https://www.baeldung.com/java-convert-long-to-int)

core-java-modules/core-java-jar/pom.xml

@@ -259,7 +259,7 @@
                 </plugins>
             </build>
         </profile>
-       
+
     </profiles>
 
     <properties>

core-java-modules/core-java-jvm/pom.xml

@@ -64,13 +64,6 @@
         </dependency>
     </dependencies>
 
-    <properties>
-        <javaassist.version>3.27.0-GA</javaassist.version>
-        <sun.tools.version>1.8.0</sun.tools.version>
-        <jol-core.version>0.10</jol-core.version>
-        <asm.version>8.0.1</asm.version>
-        <bcel.version>6.5.0</bcel.version>
-    </properties>
     <profiles>
         <!-- java instrumentation profiles to build jars -->
         <profile>
@@ -181,4 +174,12 @@
         </profile>
     </profiles>
 
+    <properties>
+        <javaassist.version>3.27.0-GA</javaassist.version>
+        <sun.tools.version>1.8.0</sun.tools.version>
+        <jol-core.version>0.10</jol-core.version>
+        <asm.version>8.0.1</asm.version>
+        <bcel.version>6.5.0</bcel.version>
+    </properties>
+
 </project>

core-java-modules/core-java-lang-4/README.md

@@ -10,3 +10,4 @@ This module contains articles about core features in the Java language
 - [Tiered Compilation in JVM](https://www.baeldung.com/jvm-tiered-compilation)
 - [Fixing the “Declared package does not match the expected package” Error](https://www.baeldung.com/java-declared-expected-package-error)
 - [Chaining Constructors in Java](https://www.baeldung.com/java-chain-constructors)
+- [Difference Between POJO, JavaBeans, DTO and VO](https://www.baeldung.com/java-pojo-javabeans-dto-vo)

core-java-modules/core-java-lang-4/src/main/java/com/baeldung/employee/EmployeeBean.java

@@ -0,0 +1,48 @@
+package com.baeldung.employee;
+
+import java.io.Serializable;
+import java.time.LocalDate;
+
+public class EmployeeBean implements Serializable {
+
+    private static final long serialVersionUID = -3760445487636086034L;
+
+    private String firstName;
+    private String lastName;
+    private LocalDate startDate;
+
+    public EmployeeBean() {
+
+    }
+
+    public EmployeeBean(String firstName, String lastName, LocalDate startDate) {
+        this.firstName = firstName;
+        this.lastName = lastName;
+        this.startDate = startDate;
+    }
+
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public void setFirstName(String firstName) {
+        this.firstName = firstName;
+    }
+
+    public String getLastName() {
+        return lastName;
+    }
+
+    public void setLastName(String lastName) {
+        this.lastName = lastName;
+    }
+
+    public LocalDate getStartDate() {
+        return startDate;
+    }
+
+    public void setStartDate(LocalDate startDate) {
+        this.startDate = startDate;
+    }
+
+}

core-java-modules/core-java-lang-4/src/main/java/com/baeldung/employee/EmployeeDTO.java

@@ -0,0 +1,34 @@
+package com.baeldung.employee;
+
+import java.time.LocalDate;
+
+public class EmployeeDTO {
+
+    private String firstName;
+    private String lastName;
+    private LocalDate startDate;
+
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public void setFirstName(String firstName) {
+        this.firstName = firstName;
+    }
+
+    public String getLastName() {
+        return lastName;
+    }
+
+    public void setLastName(String lastName) {
+        this.lastName = lastName;
+    }
+
+    public LocalDate getStartDate() {
+        return startDate;
+    }
+
+    public void setStartDate(LocalDate startDate) {
+        this.startDate = startDate;
+    }
+}

core-java-modules/core-java-lang-4/src/main/java/com/baeldung/employee/EmployeePOJO.java

@@ -0,0 +1,49 @@
+package com.baeldung.employee;
+
+import java.time.LocalDate;
+import java.util.Objects;
+
+public class EmployeePOJO {
+
+    private String firstName;
+    private String lastName;
+    private LocalDate startDate;
+
+    public EmployeePOJO(String firstName, String lastName, LocalDate startDate) {
+        this.firstName = firstName;
+        this.lastName = lastName;
+        this.startDate = startDate;
+    }
+
+    public String name() {
+        return this.firstName + " " + this.lastName;
+    }
+
+    public LocalDate getStart() {
+        return this.startDate;
+    }
+
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public void setFirstName(String firstName) {
+        this.firstName = firstName;
+    }
+
+    public String getLastName() {
+        return lastName;
+    }
+
+    public void setLastName(String lastName) {
+        this.lastName = lastName;
+    }
+
+    public LocalDate getStartDate() {
+        return startDate;
+    }
+
+    public void setStartDate(LocalDate startDate) {
+        this.startDate = startDate;
+    }
+}

core-java-modules/core-java-lang-4/src/main/java/com/baeldung/employee/EmployeeVO.java

@@ -0,0 +1,40 @@
+package com.baeldung.employee;
+
+import java.time.LocalDate;
+import java.util.Objects;
+
+public class EmployeeVO {
+    private String firstName;
+    private String lastName;
+    private LocalDate startDate;
+
+    public EmployeeVO(String firstName, String lastName, LocalDate startDate) {
+        this.firstName = firstName;
+        this.lastName = lastName;
+        this.startDate = startDate;
+    }
+
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public String getLastName() {
+        return lastName;
+    }
+
+    public LocalDate getStartDate() {
+        return startDate;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        return Objects.equals(firstName, this.firstName)
+            && Objects.equals(lastName, this.lastName)
+            && Objects.equals(startDate, this.startDate);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(firstName, lastName, startDate);
+    }
+}

core-java-modules/core-java-serialization/pom.xml

@@ -64,7 +64,6 @@
                 <filtering>true</filtering>
             </resource>
         </resources>
-
         <plugins>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>

core-java-modules/core-java-string-algorithms-3/pom.xml

@@ -54,4 +54,5 @@
         <validator.version>1.7</validator.version>
         <apache-commons-lang3.version>3.12.0</apache-commons-lang3.version>
     </properties>
+
 </project>

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

@@ -69,7 +69,6 @@
                 <filtering>true</filtering>
             </resource>
         </resources>
-
         <plugins>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>

core-java-modules/pom.xml

@@ -137,4 +137,4 @@
         </dependencies>
     </dependencyManagement>
 
-</project>
+</project>

ddd-modules/infrastructure/pom.xml

@@ -1,13 +1,11 @@
 <?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>
     <groupId>com.baeldung.dddmodules.infrastructure</groupId>
     <artifactId>infrastructure</artifactId>
     <version>1.0</version>
-
     <packaging>jar</packaging>
 
     <parent>

ddd-modules/mainapp/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-modules/ordercontext/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>
@@ -13,7 +12,6 @@
         <groupId>com.baeldung.dddmodules</groupId>
         <artifactId>ddd-modules</artifactId>
         <version>1.0</version>
-        <relativePath>../</relativePath>
     </parent>
 
     <dependencies>

ddd-modules/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>
@@ -14,7 +13,6 @@
         <groupId>com.baeldung</groupId>
         <artifactId>parent-modules</artifactId>
         <version>1.0.0-SNAPSHOT</version>
-        <relativePath>../</relativePath>
     </parent>
 
     <modules>
@@ -70,10 +68,8 @@
     <properties>
         <source.version>9</source.version>
         <target.version>9</target.version>
-
         <compiler.plugin.version>3.8.1</compiler.plugin.version>
-
         <appmodules.version>1.0</appmodules.version>
     </properties>
 
-</project>
+</project>

ddd-modules/sharedkernel/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>
@@ -13,7 +12,6 @@
         <groupId>com.baeldung.dddmodules</groupId>
         <artifactId>ddd-modules</artifactId>
         <version>1.0</version>
-        <relativePath>../</relativePath>
     </parent>
 
     <build>

ddd-modules/shippingcontext/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>
@@ -13,7 +12,6 @@
         <groupId>com.baeldung.dddmodules</groupId>
         <artifactId>ddd-modules</artifactId>
         <version>1.0</version>
-        <relativePath>../</relativePath>
     </parent>
 
     <dependencies>

geotools/pom.xml

@@ -15,6 +15,14 @@
         <version>1.0.0-SNAPSHOT</version>
     </parent>
 
+    <repositories>
+        <repository>
+            <id>osgeo-release</id>
+            <name>OSGeo Repository</name>
+            <url>https://repo.osgeo.org/repository/release/</url>
+        </repository>
+    </repositories>
+
     <dependencies>
         <dependency>
             <groupId>org.geotools</groupId>
@@ -33,14 +41,6 @@
         </dependency>
     </dependencies>
 
-    <repositories>
-        <repository>
-            <id>osgeo-release</id>
-            <name>OSGeo Repository</name>
-            <url>https://repo.osgeo.org/repository/release/</url>
-        </repository>
-    </repositories>
-
     <properties>
         <geotools.version>15.2</geotools.version>
         <geotools-swing.version>15.2</geotools-swing.version>

graphql/graphql-dgs/pom.xml

@@ -33,26 +33,22 @@
             <artifactId>spring-boot-starter</artifactId>
             <version>2.6.2</version>
         </dependency>
-
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-test</artifactId>
             <version>2.6.2</version>
             <scope>test</scope>
         </dependency>
-
         <dependency>
             <groupId>com.netflix.graphql.dgs.codegen</groupId>
             <artifactId>graphql-dgs-codegen-client-core</artifactId>
             <version>5.1.14</version>
         </dependency>
-
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-web</artifactId>
             <version>2.6.2</version>
         </dependency>
-
         <dependency>
             <groupId>com.netflix.graphql.dgs</groupId>
             <artifactId>graphql-dgs-spring-boot-starter</artifactId>
@@ -88,4 +84,4 @@
         </plugins>
     </build>
 
-</project>
+</project>

httpclient-2/pom.xml

@@ -1,6 +1,7 @@
 <?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"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    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-2</artifactId>
     <version>0.1-SNAPSHOT</version>

jakarta-ee/README.md

@@ -0,0 +1,3 @@
+### Relevant Articles:
+
+- [Introduction to Jakarta EE MVC / Eclipse Krazo](https://www.baeldung.com/java-ee-mvc-eclipse-krazo)

java-collections-maps-3/pom.xml

@@ -22,7 +22,6 @@
             <artifactId>junit-jupiter-api</artifactId>
             <version>5.8.1</version>
         </dependency>
-
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-core</artifactId>

java-numbers-4/README.md

@@ -4,3 +4,4 @@
 - [Understanding the & 0xff Value in Java](https://www.baeldung.com/java-and-0xff)
 - [Determine if an Integer’s Square Root Is an Integer in Java](https://www.baeldung.com/java-find-if-square-root-is-integer)
 - [Guide to Java BigInteger](https://www.baeldung.com/java-biginteger)
+- [Automorphic Numbers in Java](https://www.baeldung.com/java-automorphic-numbers)

java-numbers-4/src/main/java/com/baeldung/automorphicnumber/AutomorphicNumber.java

@@ -0,0 +1,31 @@
+package com.baeldung.automorphicnumber;
+
+public class AutomorphicNumber {
+
+    public static void main(String[] args) {
+        System.out.println(isAutomorphicUsingLoop(76));
+        System.out.println(isAutomorphicUsingMath(76));
+    }
+
+    public static boolean isAutomorphicUsingMath(int number) {
+        int square = number * number;
+
+        int numberOfDigits = (int) Math.floor(Math.log10(number) + 1);
+        int lastDigits = (int) (square % (Math.pow(10, numberOfDigits)));
+
+        return number == lastDigits;
+    }
+
+    public static boolean isAutomorphicUsingLoop(int number) {
+        int square = number * number;
+
+        while (number > 0) {
+            if (number % 10 != square % 10) {
+                return false;
+            }
+            number /= 10;
+            square /= 10;
+        }
+        return true;
+    }
+}

java-numbers-4/src/test/java/com/baeldung/automorphicnumber/AutomorphicNumberUnitTest.java

@@ -0,0 +1,19 @@
+package com.baeldung.automorphicnumber;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+import org.junit.jupiter.api.Test;
+
+public class AutomorphicNumberUnitTest {
+
+    @Test
+    void givenANumber_whenPassed_thenShouldDetermineAutomorphicOrNot() {
+        int number1 = 76; // automorphic
+        int number2 = 16; // not automorphic 
+        assertTrue(AutomorphicNumber.isAutomorphicUsingLoop(number1));
+        assertFalse(AutomorphicNumber.isAutomorphicUsingLoop(number2));
+        assertTrue(AutomorphicNumber.isAutomorphicUsingMath(number1));
+        assertFalse(AutomorphicNumber.isAutomorphicUsingMath(number2));
+    }
+}

javax-servlets-2/pom.xml

@@ -57,4 +57,5 @@
         <org.apache.httpcomponents.version>4.5.13</org.apache.httpcomponents.version>
         <javax.servlet-api.version>4.0.1</javax.servlet-api.version>
     </properties>
-</project>
+
+</project>

javaxval/pom.xml

@@ -37,35 +37,13 @@
     </dependencies>
 
     <!-- uncomment in order to enable Hibernate Validator Anotation Processor -->
-    <!--
+    <!-- <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> 
-    <build>
+        <version>${maven.compiler.version}</version> <configuration> <source>${maven.compiler.source}</source> 
-        <plugins>
+        <target>${maven.compiler.target}</target> <fork>true</fork> <compilerArgs> <arg>-Averbose=true</arg> 
-            <plugin>
+        <arg>-AmethodConstraintsSupported=true</arg> <arg>-AdiagnosticKind=ERROR</arg> </compilerArgs> <annotationProcessorPaths> 
-                <groupId>org.apache.maven.plugins</groupId>
+        <path> <groupId>org.hibernate.validator</groupId> <artifactId>hibernate-validator-annotation-processor</artifactId> 
-                <artifactId>maven-compiler-plugin</artifactId>
+        <version>${hibernate-validator.ap.version}</version> </path> </annotationProcessorPaths> </configuration> 
-                <version>${maven.compiler.version}</version>
+        </plugin> </plugins> </build> -->
-                <configuration>
-                    <source>${maven.compiler.source}</source>
-                    <target>${maven.compiler.target}</target>
-                    <fork>true</fork>
-                    <compilerArgs>
-                        <arg>-Averbose=true</arg>
-                        <arg>-AmethodConstraintsSupported=true</arg>
-                        <arg>-AdiagnosticKind=ERROR</arg>
-                    </compilerArgs>
-                    <annotationProcessorPaths>
-                        <path>
-                            <groupId>org.hibernate.validator</groupId>
-                            <artifactId>hibernate-validator-annotation-processor</artifactId>
-                            <version>${hibernate-validator.ap.version}</version>
-                        </path>
-                    </annotationProcessorPaths>
-                </configuration>
-            </plugin>
-        </plugins>
-    </build>
-
-    -->
 
     <properties>
         <hibernate-validator.version>6.0.13.Final</hibernate-validator.version>
@@ -77,4 +55,4 @@
         <org.springframework.version>5.0.2.RELEASE</org.springframework.version>
     </properties>
 
-</project>
+</project>

jta/pom.xml

@@ -15,7 +15,7 @@
         <version>0.0.1-SNAPSHOT</version>
         <relativePath>../parent-boot-2</relativePath>
     </parent>
-    
+
     <dependencyManagement>
         <dependencies>
             <dependency>

ksqldb/pom.xml

@@ -11,7 +11,6 @@
         <groupId>com.baeldung</groupId>
         <artifactId>parent-modules</artifactId>
         <version>1.0.0-SNAPSHOT</version>
-        <relativePath>../pom.xml</relativePath>
     </parent>
 
     <repositories>

libraries-concurrency/pom.xml

@@ -1,7 +1,7 @@
 <?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"
+    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">
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <artifactId>libraries-concurrency</artifactId>
     <name>libraries-concurrency</name>
@@ -78,5 +78,5 @@
     <properties>
         <quasar.version>0.8.0</quasar.version>
     </properties>
-    
+
 </project>

lombok-2/pom.xml

@@ -22,4 +22,4 @@
         </dependency>
     </dependencies>
 
-</project>
+</project>

lombok/pom.xml

@@ -62,18 +62,9 @@
                             <verbose>false</verbose>
                         </configuration>
                     </execution>
-                    <!-- This is for delomboking also your tests sources.
+                    <!-- This is for delomboking also your tests sources. <execution> <id>test-delombok</id> 
-                    <execution>
+                        <phase>generate-test-sources</phase> <goals> <goal>testDelombok</goal> </goals> <configuration> <verbose>false</verbose> 
-                        <id>test-delombok</id>
+                        </configuration> </execution> -->
-                        <phase>generate-test-sources</phase>
-                        <goals>
-                            <goal>testDelombok</goal>
-                        </goals>
-                        <configuration>
-                            <verbose>false</verbose>
-                        </configuration>
-                    </execution>
-                    -->
                 </executions>
             </plugin>
         </plugins>

maven-modules/maven-classifier/maven-classifier-example-consumer/pom.xml

@@ -1,22 +1,16 @@
 <?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"
+    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">
+    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>maven-classifier-example-consumer</artifactId>
+
     <parent>
         <artifactId>maven-classifier</artifactId>
         <groupId>com.baeldung</groupId>
         <version>0.0.1-SNAPSHOT</version>
     </parent>
 
-    <modelVersion>4.0.0</modelVersion>
-
-    <artifactId>maven-classifier-example-consumer</artifactId>
-
-    <properties>
-        <maven.compiler.source>8</maven.compiler.source>
-        <maven.compiler.target>8</maven.compiler.target>
-    </properties>
-
     <dependencies>
         <dependency>
             <groupId>com.baeldung</groupId>
@@ -29,13 +23,14 @@
             <version>0.0.1-SNAPSHOT</version>
             <classifier>arbitrary</classifier>
         </dependency>
-        <!--        For example purpose not building as it requires both JDK 8 and 11 executables on the build machine -->
+        <!-- For example purpose not building as it requires both JDK 8 and 11 executables on the build 
-        <!--        <dependency>-->
+            machine -->
-        <!--            <groupId>com.baeldung</groupId>-->
+        <!-- <dependency> -->
-        <!--            <artifactId>maven-classifier-example-provider</artifactId>-->
+        <!-- <groupId>com.baeldung</groupId> -->
-        <!--            <version>0.0.1-SNAPSHOT</version>-->
+        <!-- <artifactId>maven-classifier-example-provider</artifactId> -->
-        <!--            <classifier>jdk11</classifier>-->
+        <!-- <version>0.0.1-SNAPSHOT</version> -->
-        <!--        </dependency>-->
+        <!-- <classifier>jdk11</classifier> -->
+        <!-- </dependency> -->
         <dependency>
             <groupId>com.baeldung</groupId>
             <artifactId>maven-classifier-example-provider</artifactId>
@@ -50,4 +45,9 @@
         </dependency>
     </dependencies>
 
-</project>
+    <properties>
+        <maven.compiler.source>8</maven.compiler.source>
+        <maven.compiler.target>8</maven.compiler.target>
+    </properties>
+
+</project>

maven-modules/maven-classifier/maven-classifier-example-provider/pom.xml

@@ -1,9 +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"
+    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">
+    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>maven-classifier-example-provider</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
 
     <parent>
         <artifactId>maven-classifier</artifactId>
@@ -11,15 +12,6 @@
         <version>0.0.1-SNAPSHOT</version>
     </parent>
 
-    <artifactId>maven-classifier-example-provider</artifactId>
-    <version>0.0.1-SNAPSHOT</version>
-
-    <properties>
-        <maven.compiler.source>8</maven.compiler.source>
-        <maven.compiler.target>8</maven.compiler.target>
-        <!--        <jdk.11.executable.path></jdk.11.executable.path>-->
-    </properties>
-
     <build>
         <plugins>
             <plugin>
@@ -39,21 +31,22 @@
                             <fork>true</fork>
                         </configuration>
                     </execution>
-                    <!--        For example purpose not building as it requires both JDK 8 and 11 executables on the build machine -->
+                    <!-- For example purpose not building as it requires both JDK 8 and 11 executables 
-                    <!--                    <execution>-->
+                        on the build machine -->
-                    <!--                        <id>JDK 11</id>-->
+                    <!-- <execution> -->
-                    <!--                        <phase>compile</phase>-->
+                    <!-- <id>JDK 11</id> -->
-                    <!--                        <goals>-->
+                    <!-- <phase>compile</phase> -->
-                    <!--                            <goal>compile</goal>-->
+                    <!-- <goals> -->
-                    <!--                        </goals>-->
+                    <!-- <goal>compile</goal> -->
-                    <!--                        <configuration>-->
+                    <!-- </goals> -->
-                    <!--                            <fork>true</fork>-->
+                    <!-- <configuration> -->
-                    <!--                            <outputDirectory>${project.build.outputDirectory}_jdk11</outputDirectory>-->
+                    <!-- <fork>true</fork> -->
-                    <!--                            <executable>${jdk.11.executable.path}</executable>-->
+                    <!-- <outputDirectory>${project.build.outputDirectory}_jdk11</outputDirectory> -->
-                    <!--                            <source>8</source>-->
+                    <!-- <executable>${jdk.11.executable.path}</executable> -->
-                    <!--                            <target>11</target>-->
+                    <!-- <source>8</source> -->
-                    <!--                        </configuration>-->
+                    <!-- <target>11</target> -->
-                    <!--                    </execution>-->
+                    <!-- </configuration> -->
+                    <!-- </execution> -->
                 </executions>
             </plugin>
             <plugin>
@@ -76,18 +69,19 @@
                             <goal>test-jar</goal>
                         </goals>
                     </execution>
-                    <!--        For example purpose not building as it requires both JDK 8 and 11 executables on the build machine -->
+                    <!-- For example purpose not building as it requires both JDK 8 and 11 executables 
-                    <!--                    <execution>-->
+                        on the build machine -->
-                    <!--                        <id>default-package-jdk11</id>-->
+                    <!-- <execution> -->
-                    <!--                        <phase>package</phase>-->
+                    <!-- <id>default-package-jdk11</id> -->
-                    <!--                        <goals>-->
+                    <!-- <phase>package</phase> -->
-                    <!--                            <goal>jar</goal>-->
+                    <!-- <goals> -->
-                    <!--                        </goals>-->
+                    <!-- <goal>jar</goal> -->
-                    <!--                        <configuration>-->
+                    <!-- </goals> -->
-                    <!--                            <classesDirectory>${project.build.outputDirectory}_jdk11</classesDirectory>-->
+                    <!-- <configuration> -->
-                    <!--                            <classifier>jdk11</classifier>-->
+                    <!-- <classesDirectory>${project.build.outputDirectory}_jdk11</classesDirectory> -->
-                    <!--                        </configuration>-->
+                    <!-- <classifier>jdk11</classifier> -->
-                    <!--                    </execution>-->
+                    <!-- </configuration> -->
+                    <!-- </execution> -->
                 </executions>
             </plugin>
             <plugin>
@@ -119,4 +113,11 @@
             </plugin>
         </plugins>
     </build>
-</project>
+
+    <properties>
+        <maven.compiler.source>8</maven.compiler.source>
+        <maven.compiler.target>8</maven.compiler.target>
+        <!-- <jdk.11.executable.path></jdk.11.executable.path> -->
+    </properties>
+
+</project>

maven-modules/maven-classifier/pom.xml

@@ -1,9 +1,8 @@
 <?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"
+    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">
+    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>maven-classifier</artifactId>
     <packaging>pom</packaging>
     <version>0.0.1-SNAPSHOT</version>
@@ -24,4 +23,4 @@
         <maven.compiler.target>8</maven.compiler.target>
     </properties>
 
-</project>
+</project>

maven-modules/maven-copy-files/copy-rename-maven-plugin/pom.xml

@@ -3,9 +3,7 @@
     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>org.baeldung</groupId>
     <artifactId>copy-rename-maven-plugin</artifactId>
-    <version>1.0-SNAPSHOT</version>
     <name>copy-rename-maven-plugin</name>
 
     <parent>

maven-modules/maven-copy-files/copy-rename-maven-plugin/src/test/java/com/baeldung/CopyFileUnitTest.java

@@ -1,4 +1,4 @@
-package org.baeldung;
+package com.baeldung;
 
 import org.junit.Test;
 

maven-modules/maven-copy-files/maven-antrun-plugin/pom.xml

@@ -3,9 +3,7 @@
     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>org.baeldung</groupId>
     <artifactId>maven-antrun-plugin</artifactId>
-    <version>1.0-SNAPSHOT</version>
     <name>maven-antrun-plugin</name>
 
     <parent>

maven-modules/maven-copy-files/maven-antrun-plugin/src/test/java/com/baeldung/CopyFileUnitTest.java

@@ -1,4 +1,4 @@
-package org.baeldung;
+package com.baeldung;
 
 import org.junit.Test;
 

maven-modules/maven-copy-files/maven-resources-plugin/pom.xml

@@ -3,9 +3,7 @@
     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>org.baeldung</groupId>
     <artifactId>maven-resources-plugin</artifactId>
-    <version>1.0-SNAPSHOT</version>
     <name>maven-resources-plugin</name>
 
     <parent>

maven-modules/maven-copy-files/maven-resources-plugin/src/test/java/com/baeldung/CopyFileUnitTest.java

@@ -1,4 +1,4 @@
-package org.baeldung;
+package com.baeldung;
 
 import org.junit.Test;
 

maven-modules/maven-generate-war/pom.xml

@@ -6,8 +6,8 @@
     <groupId>com.baeldung</groupId>
     <artifactId>maven-generate-war</artifactId>
     <version>0.0.1-SNAPSHOT</version>
-    <packaging>war</packaging>
     <name>maven-generate-war</name>
+    <packaging>war</packaging>
     <description>Spring boot project to demonstrate war file generation</description>
 
     <parent>

maven-modules/maven-simple/maven-dependency/pom.xml

@@ -4,13 +4,12 @@
     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>maven-dependency</artifactId>
-    <version>1.0.0-SNAPSHOT</version>
     <packaging>pom</packaging>
 
     <parent>
         <groupId>com.baeldung</groupId>
         <artifactId>maven-simple</artifactId>
-        <version>0.0.1-SNAPSHOT</version>
+        <version>1.0.0-SNAPSHOT</version>
     </parent>
 
     <dependencyManagement>

maven-modules/maven-simple/parent-project/core/pom.xml

@@ -3,14 +3,24 @@
     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>org.baeldung</groupId>
     <artifactId>core</artifactId>
     <name>core</name>
 
     <parent>
         <artifactId>parent-project</artifactId>
         <groupId>com.baeldung</groupId>
-        <version>1.0.0-SNAPSHOT</version>
+        <version>1.0-SNAPSHOT</version>
     </parent>
 
-</project>
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-core</artifactId>
+            <version>${spring-core.version}</version>
+        </dependency>
+    </dependencies>
+
+    <properties>
+        <spring-core.version>4.3.30.RELEASE</spring-core.version>
+    </properties>
+</project>

maven-modules/maven-simple/parent-project/pom.xml

@@ -4,6 +4,7 @@
     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>
     <artifactId>parent-project</artifactId>
+    <version>1.0-SNAPSHOT</version>
     <name>parent-project</name>
     <packaging>pom</packaging>
 
@@ -18,4 +19,18 @@
         <module>service</module>
         <module>webapp</module>
     </modules>
-</project>
+
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>org.springframework</groupId>
+                <artifactId>spring-core</artifactId>
+                <version>${spring-core.version}</version>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
+
+    <properties>
+        <spring-core.version>5.3.16</spring-core.version>
+    </properties>
+</project>

maven-modules/maven-simple/parent-project/service/pom.xml

@@ -3,14 +3,13 @@
     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>org.baeldung</groupId>
     <artifactId>service</artifactId>
     <name>service</name>
 
     <parent>
         <artifactId>parent-project</artifactId>
         <groupId>com.baeldung</groupId>
-        <version>1.0.0-SNAPSHOT</version>
+        <version>1.0-SNAPSHOT</version>
     </parent>
 
-</project>
+</project>

maven-modules/maven-simple/parent-project/webapp/pom.xml

@@ -3,14 +3,31 @@
     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>org.baeldung</groupId>
     <artifactId>webapp</artifactId>
     <name>webapp</name>
 
+    <packaging>war</packaging>
+
     <parent>
         <artifactId>parent-project</artifactId>
         <groupId>com.baeldung</groupId>
-        <version>1.0.0-SNAPSHOT</version>
+        <version>1.0-SNAPSHOT</version>
     </parent>
 
-</project>
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-war-plugin</artifactId>
+                <version>${maven-war-plugin.version}</version>
+                <configuration>
+                    <failOnMissingWebXml>false</failOnMissingWebXml>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+    <properties>
+        <maven-war-plugin.version>3.3.2</maven-war-plugin.version>
+    </properties>
+</project>

metrics/pom.xml

@@ -92,4 +92,4 @@
         <metrics-aspectj.version>1.1.0</metrics-aspectj.version>
     </properties>
 
-</project>
+</project>

netty/pom.xml

@@ -1,6 +1,7 @@
 <?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"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    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>netty</artifactId>
     <version>0.0.1-SNAPSHOT</version>
@@ -11,20 +12,18 @@
         <artifactId>parent-modules</artifactId>
         <version>1.0.0-SNAPSHOT</version>
     </parent>
-    
+
     <dependencies>
         <dependency>
             <groupId>io.netty</groupId>
             <artifactId>netty-all</artifactId>
             <version>${netty.version}</version>
         </dependency>
-
+        <dependency>
-       <dependency>
             <groupId>org.conscrypt</groupId>
             <artifactId>conscrypt-openjdk-uber</artifactId>
             <version>${conscrypt-openjdk-uber.version}</version>
         </dependency>
-
     </dependencies>
 
     <properties>

nginx-forward-proxy/README.md

@@ -0,0 +1,3 @@
+### Relevant Articles:
+
+- [Using Nginx as a Forward Proxy](https://www.baeldung.com/nginx-forward-proxy)

patterns/enterprise-patterns/pom.xml

@@ -16,6 +16,25 @@
         <module>wire-tap</module>
     </modules>
 
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>org.apache.camel.springboot</groupId>
+                <artifactId>camel-spring-boot-dependencies</artifactId>
+                <version>${camel.version}</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+            <dependency>
+                <groupId>org.apache.logging.log4j</groupId>
+                <artifactId>log4j-bom</artifactId>
+                <version>${log4j2.version}</version>
+                <scope>import</scope>
+                <type>pom</type>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
+
     <dependencies>
         <dependency>
             <groupId>org.apache.camel.springboot</groupId>
@@ -39,25 +58,6 @@
         </dependency>
     </dependencies>
 
-    <dependencyManagement>
-        <dependencies>
-            <dependency>
-                <groupId>org.apache.camel.springboot</groupId>
-                <artifactId>camel-spring-boot-dependencies</artifactId>
-                <version>${camel.version}</version>
-                <type>pom</type>
-                <scope>import</scope>
-            </dependency>
-            <dependency>
-                <groupId>org.apache.logging.log4j</groupId>
-                <artifactId>log4j-bom</artifactId>
-                <version>${log4j2.version}</version>
-                <scope>import</scope>
-                <type>pom</type>
-            </dependency>
-        </dependencies>
-    </dependencyManagement>
-
     <build>
         <plugins>
             <plugin>
@@ -70,7 +70,7 @@
     <properties>
         <camel.version>3.7.4</camel.version>
         <spring-boot.version>2.2.2.RELEASE</spring-boot.version>
-         <log4j2.version>2.17.1</log4j2.version>
+        <log4j2.version>2.17.1</log4j2.version>
     </properties>
 
 </project>

persistence-modules/fauna/README.md

@@ -0,0 +1,3 @@
+### Relevant Articles:
+
+- [Building a web app Using Fauna and Spring for Your First web Agency Client](https://www.baeldung.com/faunadb-spring-web-app)

persistence-modules/hibernate-mapping-2/pom.xml

@@ -54,22 +54,22 @@
             <groupId>com.h2database</groupId>
             <artifactId>h2</artifactId>
             <version>${h2.version}</version>
-        </dependency>	  
+        </dependency>
-		<dependency>
+        <dependency>
-			 <groupId>com.sun.xml.bind</groupId>
+            <groupId>com.sun.xml.bind</groupId>
-			 <artifactId>jaxb-core</artifactId>
+            <artifactId>jaxb-core</artifactId>
-			 <version>${com.sun.xml.version}</version>
+            <version>${com.sun.xml.version}</version>
-		</dependency>
+        </dependency>
-		<dependency>
+        <dependency>
-			 <groupId>javax.xml.bind</groupId>
+            <groupId>javax.xml.bind</groupId>
-			 <artifactId>jaxb-api</artifactId>
+            <artifactId>jaxb-api</artifactId>
-			 <version>${javax.xml.bind.version}</version>
+            <version>${javax.xml.bind.version}</version>
-		</dependency>
+        </dependency>
-		<dependency>
+        <dependency>
-			 <groupId>com.sun.xml.bind</groupId>
+            <groupId>com.sun.xml.bind</groupId>
-			 <artifactId>jaxb-impl</artifactId>
+            <artifactId>jaxb-impl</artifactId>
-			 <version>${com.sun.xml.version}</version>
+            <version>${com.sun.xml.version}</version>
-		</dependency>
+        </dependency>
     </dependencies>
 
     <properties>

persistence-modules/java-cassandra/pom.xml

@@ -77,4 +77,4 @@
         <netty-transport-version>4.1.71.Final</netty-transport-version>
     </properties>
 
-</project>
+</project>

persistence-modules/java-mongodb-2/.gitignore

@@ -0,0 +1,5 @@
+.classpath
+.project
+.settings
+target
+build

persistence-modules/java-mongodb-2/README.md

@@ -0,0 +1,5 @@
+## MongoDB
+
+This module contains articles about MongoDB in Java. 
+
+

persistence-modules/java-mongodb-2/pom.xml

@@ -0,0 +1,53 @@
+<?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>java-mongodb-2</artifactId>
+    <version>1.0-SNAPSHOT</version>
+    <name>java-mongodb-2</name>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>persistence-modules</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>de.flapdoodle.embedmongo</groupId>
+            <artifactId>de.flapdoodle.embedmongo</artifactId>
+            <version>${flapdoodle.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.mongodb</groupId>
+            <artifactId>mongo-java-driver</artifactId>
+            <version>${mongo.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>dev.morphia.morphia</groupId>
+            <artifactId>core</artifactId>
+            <version>${morphia.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.testcontainers</groupId>
+            <artifactId>mongodb</artifactId>
+            <version>1.16.3</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.testcontainers</groupId>
+            <artifactId>junit-jupiter</artifactId>
+            <version>1.16.3</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <properties>
+        <mongo.version>3.12.1</mongo.version>
+        <flapdoodle.version>1.11</flapdoodle.version>
+        <morphia.version>1.5.3</morphia.version>
+    </properties>
+
+</project>

persistence-modules/java-mongodb-2/src/main/java/com/baeldung/mongo/update/PustSetOperation.java

@@ -0,0 +1,54 @@
+package com.baeldung.mongo.update;
+
+import org.bson.Document;
+
+import com.mongodb.MongoClient;
+import com.mongodb.client.MongoCollection;
+import com.mongodb.client.MongoDatabase;
+import com.mongodb.client.model.Filters;
+import com.mongodb.client.model.Updates;
+import com.mongodb.client.result.UpdateResult;
+
+public class PustSetOperation {
+
+    private static MongoClient mongoClient;
+
+    private static String testCollectionName;
+    private static String databaseName;
+
+    public static void setUp() {
+        if (mongoClient == null) {
+            mongoClient = new MongoClient("localhost", 27017);
+        }
+        databaseName = "baeldung";
+        testCollectionName = "marks";
+    }
+
+    public static void pushSetSolution() {
+
+        MongoDatabase database = mongoClient.getDatabase(databaseName);
+        MongoCollection<Document> collection = database.getCollection(testCollectionName);
+
+        Document subjectData = new Document().append("subjectId", 126)
+            .append("subjectName", "Java Programming")
+            .append("marks", 70);
+        UpdateResult updateQueryResult = collection.updateOne(Filters.eq("studentId", 1023), Updates.combine(Updates.set("totalMarks", 170), Updates.push("subjectDetails", subjectData)));
+        System.out.println("updateQueryResult:- " + updateQueryResult);
+
+    }
+
+    public static void main(String args[]) {
+
+        //
+        // Connect to cluster (default is localhost:27017)
+        //
+        setUp();
+
+        //
+        // Push document into the array and set a field
+        //
+        pushSetSolution();
+
+    }
+}
+

persistence-modules/java-mongodb-2/src/main/resources/logback.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>

persistence-modules/java-mongodb-2/src/test/java/com/baeldung/mongo/update/PustSetOperationLiveTest.java

@@ -0,0 +1,53 @@
+package com.baeldung.update;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotNull;
+
+import org.bson.Document;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import com.mongodb.MongoClient;
+import com.mongodb.client.MongoCollection;
+import com.mongodb.client.MongoDatabase;
+import com.mongodb.client.model.Filters;
+import com.mongodb.client.model.Updates;
+import com.mongodb.client.result.UpdateResult;
+
+public class PustSetOperationLiveTest {
+
+    private static MongoClient mongoClient;
+    private static MongoDatabase db;
+    private static MongoCollection<Document> collection;
+
+    @BeforeClass
+    public static void setup() {
+        if (mongoClient == null) {
+            mongoClient = new MongoClient("localhost", 27017);
+            db = mongoClient.getDatabase("baeldung");
+            collection = db.getCollection("marks");
+
+            collection.insertOne(Document.parse("{\n" + "        \"studentId\": 1023,\n" + "        \"studentName\":\"James Broad\",\n" + "        \"joiningYear\":\"2018\",\n" + "        \"totalMarks\":100,\n" + "        \"subjectDetails\":[\n"
+                + "            {\n" + "                \"subjectId\":123,\n" + "                \"subjectName\":\"Operating Systems Concepts\",\n" + "                \"marks\":4,\n" + "            },\n" + "            {\n"
+                + "                \"subjectId\":124,\n" + "                \"subjectName\":\"Numerical Analysis\",\n" + "                \"marks\":60\n" + "            }\n" + "        ]\n" + "    }"));
+
+        }
+    }
+
+    @Test
+    public void givenMarksCollection_whenPushSetOperation_thenCheckingForDocument() {
+
+        Document subjectData = new Document().append("subjectId", 126)
+            .append("subjectName", "Java Programming")
+            .append("marks", 70);
+        UpdateResult updateQueryResult = collection.updateOne(Filters.eq("studentId", 1023), Updates.combine(Updates.set("totalMarks", 170), Updates.push("subjectDetails", subjectData)));
+
+        Document studentDetail = collection.find(Filters.eq("studentId", 1023))
+            .first();
+        assertNotNull(studentDetail);
+        assertFalse(studentDetail.isEmpty());
+
+    }
+
+}
+

persistence-modules/java-mongodb/README.md

@@ -14,3 +14,7 @@ This module contains articles about MongoDB in Java.
 - [How to Check Field Existence in MongoDB?](https://www.baeldung.com/mongodb-check-field-exists)
 - [Get Last Inserted Document ID in MongoDB With Java Driver](https://www.baeldung.com/java-mongodb-last-inserted-id)
 - [Update Multiple Fields in a MongoDB Document](https://www.baeldung.com/mongodb-update-multiple-fields)
+- [Update Documents in MongoDB](https://www.baeldung.com/mongodb-update-documents)
+- [Check Collection Existence in MongoDB](https://www.baeldung.com/java-check-collection-existence-mongodb)
+- [Case Insensitive Sorting in MongoDB](https://www.baeldung.com/java-mongodb-case-insensitive-sorting)
+- [Push and Set Operations in Same MongoDB Update](https://www.baeldung.com/java-mongodb-push-set)

persistence-modules/java-mongodb/pom.xml

@@ -30,6 +30,18 @@
             <artifactId>core</artifactId>
             <version>${morphia.version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.testcontainers</groupId>
+            <artifactId>mongodb</artifactId>
+            <version>1.16.3</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.testcontainers</groupId>
+            <artifactId>junit-jupiter</artifactId>
+            <version>1.16.3</version>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
     <properties>

persistence-modules/java-mongodb/src/test/java/com/baeldung/ordering/caseinsensitive/CaseInsensitiveOrderingLiveTest.java

@@ -0,0 +1,108 @@
+package com.baeldung.ordering.caseinsensitive;
+
+import com.mongodb.MongoClient;
+import com.mongodb.client.*;
+import com.mongodb.client.model.Collation;
+import com.mongodb.client.model.Projections;
+import com.mongodb.client.model.Sorts;
+import org.bson.Document;
+import org.bson.conversions.Bson;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
+import org.testcontainers.containers.MongoDBContainer;
+import org.testcontainers.junit.jupiter.Container;
+import org.testcontainers.junit.jupiter.Testcontainers;
+import org.testcontainers.utility.DockerImageName;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+import static com.mongodb.client.model.Aggregates.project;
+import static com.mongodb.client.model.Aggregates.sort;
+import static com.mongodb.client.model.Sorts.ascending;
+import static org.junit.Assert.assertEquals;
+
+@Testcontainers
+class CaseInsensitiveOrderingLiveTest {
+
+    private static MongoCollection<Document> userCollections;
+
+    @Container
+    private static final MongoDBContainer mongoDBContainer = new MongoDBContainer(DockerImageName.parse("mongo:4.0.10"));
+
+    @BeforeAll
+    private static void setup() {
+
+        MongoClient mongoClient = new MongoClient(mongoDBContainer.getContainerIpAddress(), mongoDBContainer.getMappedPort(27017));
+        MongoDatabase database = mongoClient.getDatabase("test");
+        userCollections = database.getCollection("users");
+
+        List<Document> list = new ArrayList<>();
+        list.add(Document.parse("{'name': 'ben', surname: 'ThisField' }"));
+        list.add(Document.parse("{'name': 'aen', surname: 'Does' }"));
+        list.add(Document.parse("{'name': 'Ben', surname: 'Not' }"));
+        list.add(Document.parse("{'name': 'cen', surname: 'Matter' }"));
+        list.add(Document.parse("{'name': 'Aen', surname: 'Really' }"));
+        list.add(Document.parse("{'name': 'Cen', surname: 'TrustMe' }"));
+
+        userCollections.insertMany(list);
+    }
+
+    @Test
+    void givenMongoCollection_whenUsingFindWithSort_caseIsConsideredByDefault() {
+        FindIterable<Document> nameDoc = userCollections.find().sort(ascending("name"));
+        MongoCursor<Document> cursor = nameDoc.cursor();
+
+        List<String> expectedNamesOrdering = Arrays.asList("Aen", "Ben", "Cen", "aen", "ben", "cen");
+        List<String> actualNamesOrdering = new ArrayList<>();
+        while (cursor.hasNext()) {
+            Document document = cursor.next();
+            actualNamesOrdering.add(document.get("name").toString());
+        }
+
+        assertEquals(expectedNamesOrdering, actualNamesOrdering);
+    }
+
+    @Test
+    void givenMongoCollection_whenUsingFindWithSortAndCollation_caseIsNotConsidered() {
+        FindIterable<Document> nameDoc = userCollections.find().sort(ascending("name"))
+          .collation(Collation.builder().locale("en").build());
+        MongoCursor<Document> cursor = nameDoc.cursor();
+        List<String> expectedNamesOrdering = Arrays.asList("aen", "Aen", "ben", "Ben", "cen", "Cen");
+        List<String> actualNamesOrdering = new ArrayList<>();
+        while (cursor.hasNext()) {
+            Document document = cursor.next();
+            actualNamesOrdering.add(document.get("name").toString());
+        }
+
+        assertEquals(expectedNamesOrdering, actualNamesOrdering);
+
+    }
+
+    @Test
+    void givenMongoCollection_whenUsingFindWithSortAndAggregate_caseIsNotConsidered() {
+
+        Bson projectBson = project(
+          Projections.fields(
+            Projections.include("name", "surname"),
+            Projections.computed("lowerName", Projections.computed("$toLower", "$name"))));
+
+        AggregateIterable<Document> nameDoc = userCollections.aggregate(
+          Arrays.asList(projectBson,
+            sort(Sorts.ascending("lowerName"))));
+
+        MongoCursor<Document> cursor = nameDoc.cursor();
+
+        List<String> expectedNamesOrdering = Arrays.asList("aen", "Aen", "ben", "Ben", "cen", "Cen");
+        List<String> actualNamesOrdering = new ArrayList<>();
+        while (cursor.hasNext()) {
+            Document document = cursor.next();
+            actualNamesOrdering.add(document.get("name").toString());
+        }
+
+        assertEquals(expectedNamesOrdering, actualNamesOrdering);
+    }
+
+
+}

persistence-modules/pom.xml

@@ -43,6 +43,7 @@
         <module>java-jpa-2</module> <!-- long running -->
         <module>java-jpa-3</module>
         <module>java-mongodb</module> <!-- long running -->
+        <module>java-mongodb-2</module> <!-- long running -->
         <module>jnosql</module> <!-- long running -->
         <module>jooq</module>
         <module>jpa-hibernate-cascade-type</module>
@@ -104,4 +105,4 @@
         <postgresql.version>42.2.20</postgresql.version>
     </properties>
 
-</project>
+</project>

persistence-modules/spring-data-jdbc/pom.xml

@@ -36,4 +36,4 @@
         </dependency>
     </dependencies>
 
-</project>
+</project>

persistence-modules/spring-data-jdbc/src/main/java/com/baeldung/springmultipledatasources/todos/TodoDatasourceConfiguration.java

@@ -19,6 +19,7 @@ public class TodoDatasourceConfiguration {
 
     @Bean
     @Primary
+    @ConfigurationProperties("spring.datasource.todos.hikari")
     public DataSource todosDataSource() {
         return todosDataSourceProperties()
           .initializeDataSourceBuilder()

persistence-modules/spring-data-jdbc/src/main/resources/application-multipledatasources.properties

@@ -3,6 +3,7 @@ spring.datasource.todos.url=jdbc:h2:mem:todos
 spring.datasource.todos.username=sa
 spring.datasource.todos.password=null
 spring.datasource.todos.driverClassName=org.h2.Driver
+spring.datasource.todos.hikari.connectionTimeout=44444
 spring.datasource.topics.url=jdbc:h2:mem:topics
 spring.datasource.topics.username=sa
 spring.datasource.topics.password=null

persistence-modules/spring-data-jpa-query-3/pom.xml

@@ -29,4 +29,4 @@
         </dependency>
     </dependencies>
 
-</project>
+</project>

persistence-modules/spring-hibernate-5/pom.xml

@@ -107,22 +107,22 @@
             <groupId>com.h2database</groupId>
             <artifactId>h2</artifactId>
             <version>${h2.version}</version>
-        </dependency>	  
+        </dependency>
-		<dependency>
+        <dependency>
-			 <groupId>com.sun.xml.bind</groupId>
+            <groupId>com.sun.xml.bind</groupId>
-			 <artifactId>jaxb-core</artifactId>
+            <artifactId>jaxb-core</artifactId>
-			 <version>${com.sun.xml.version}</version>
+            <version>${com.sun.xml.version}</version>
-		</dependency>
+        </dependency>
-		<dependency>
+        <dependency>
-			 <groupId>javax.xml.bind</groupId>
+            <groupId>javax.xml.bind</groupId>
-			 <artifactId>jaxb-api</artifactId>
+            <artifactId>jaxb-api</artifactId>
-			 <version>${javax.xml.bind.version}</version>
+            <version>${javax.xml.bind.version}</version>
-		</dependency>
+        </dependency>
-		<dependency>
+        <dependency>
-			 <groupId>com.sun.xml.bind</groupId>
+            <groupId>com.sun.xml.bind</groupId>
-			 <artifactId>jaxb-impl</artifactId>
+            <artifactId>jaxb-impl</artifactId>
-			 <version>${com.sun.xml.version}</version>
+            <version>${com.sun.xml.version}</version>
-		</dependency>
+        </dependency>
     </dependencies>
 
     <properties>

pom.xml

@@ -1206,6 +1206,7 @@
                 <module>wicket</module>
                 <module>wildfly</module>
                 <module>xml</module>
+                <module>xml-2</module>
                 <module>xstream</module>
             </modules>
 

quarkus-jandex/hello-sender-application-properties/pom.xml

@@ -23,4 +23,4 @@
         </dependency>
     </dependencies>
 
-</project>
+</project>

reactive-systems/inventory-service/pom.xml

@@ -10,9 +10,8 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>parent-boot-2</artifactId>
+        <artifactId>reactive-systems</artifactId>
         <version>0.0.1-SNAPSHOT</version>
-        <relativePath>../../parent-boot-2</relativePath>
     </parent>
 
     <dependencies>

reactive-systems/order-service/pom.xml

@@ -10,9 +10,8 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>parent-boot-2</artifactId>
+        <artifactId>reactive-systems</artifactId>
         <version>0.0.1-SNAPSHOT</version>
-        <relativePath>../../parent-boot-2</relativePath>
     </parent>
 
     <dependencies>

reactive-systems/pom.xml

@@ -10,8 +10,9 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>parent-modules</artifactId>
+        <artifactId>parent-boot-2</artifactId>
-        <version>1.0.0-SNAPSHOT</version>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../parent-boot-2</relativePath>
     </parent>
 
     <modules>

reactive-systems/shipping-service/pom.xml

@@ -10,9 +10,8 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>parent-boot-2</artifactId>
+        <artifactId>reactive-systems</artifactId>
         <version>0.0.1-SNAPSHOT</version>
-        <relativePath>../../parent-boot-2</relativePath>
     </parent>
 
     <dependencies>

spring-5-data-reactive/pom.xml

@@ -13,7 +13,7 @@
         <version>0.0.1-SNAPSHOT</version>
         <relativePath>../parent-boot-2</relativePath>
     </parent>
-    
+
     <dependencyManagement>
         <dependencies>
             <dependency>

spring-5-reactive-3/pom.xml

@@ -41,4 +41,5 @@
     <properties>
         <reactor-spring.version>1.0.1.RELEASE</reactor-spring.version>
     </properties>
+
 </project>

spring-activiti/pom.xml

@@ -16,7 +16,7 @@
         <version>0.0.1-SNAPSHOT</version>
         <relativePath>../parent-boot-1</relativePath>
     </parent>
-    
+
     <dependencyManagement>
         <dependencies>
             <dependency>

spring-boot-modules/spring-boot-camel/.gitignore

@@ -0,0 +1 @@
+/output/

spring-boot-modules/spring-boot-camel/pom.xml

@@ -44,6 +44,12 @@
             <artifactId>spring-boot-starter-test</artifactId>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>org.apache.camel</groupId>
+            <artifactId>camel-test-spring-junit5</artifactId>
+            <version>${camel.version}</version>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
     <build>
@@ -57,6 +63,9 @@
                         <goals>
                             <goal>repackage</goal>
                         </goals>
+                        <configuration>
+                            <mainClass>com.baeldung.camel.boot.testing.GreetingsFileSpringApplication</mainClass>
+                        </configuration>
                     </execution>
                 </executions>
             </plugin>

spring-boot-modules/spring-boot-camel/src/main/java/com/baeldung/camel/boot/testing/GreetingsFileRouter.java

@@ -0,0 +1,19 @@
+package com.baeldung.camel.boot.testing;
+
+import org.apache.camel.builder.RouteBuilder;
+import org.springframework.stereotype.Component;
+
+@Component
+public class GreetingsFileRouter extends RouteBuilder {
+
+    @Override
+    public void configure() throws Exception {
+        
+        from("direct:start")
+            .routeId("greetings-route")
+            .setBody(constant("Hello Baeldung Readers!"))
+            .to("file:output");
+
+    }
+
+}

spring-boot-modules/spring-boot-camel/src/main/java/com/baeldung/camel/boot/testing/GreetingsFileSpringApplication.java

@@ -0,0 +1,13 @@
+package com.baeldung.camel.boot.testing;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class GreetingsFileSpringApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(GreetingsFileSpringApplication.class, args);
+    }
+
+}

spring-boot-modules/spring-boot-camel/src/test/java/com/baeldung/camel/boot/testing/GreetingsFileRouterUnitTest.java

@@ -0,0 +1,32 @@
+package com.baeldung.camel.boot.testing;
+
+import org.apache.camel.EndpointInject;
+import org.apache.camel.ProducerTemplate;
+import org.apache.camel.component.mock.MockEndpoint;
+import org.apache.camel.test.spring.junit5.CamelSpringBootTest;
+import org.apache.camel.test.spring.junit5.MockEndpoints;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+@CamelSpringBootTest
+@MockEndpoints("file:output")
+class GreetingsFileRouterUnitTest {
+
+    @Autowired
+    private ProducerTemplate template;
+
+    @EndpointInject("mock:file:output")
+    private MockEndpoint mock;
+
+    @Test
+    void whenSendBody_thenGreetingReceivedSuccessfully() throws InterruptedException {
+        mock.expectedBodiesReceived("Hello Baeldung Readers!");
+
+        template.sendBody("direct:start", null);
+
+        mock.assertIsSatisfied();
+    }
+
+}

spring-boot-modules/spring-boot-multiple-datasources/pom.xml

@@ -1,7 +1,7 @@
 <?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"
+    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">
+    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>spring-boot-multiple-datasources</artifactId>
     <version>0.1.0-SNAPSHOT</version>
@@ -55,4 +55,4 @@
         <spring-boot.version>2.6.3</spring-boot.version>
     </properties>
 
-</project>
+</project>

spring-boot-modules/spring-boot-springdoc/src/main/java/com/baeldung/swaggerresponseapi/README.md

@@ -0,0 +1,3 @@
+### Relevant Articles:
+
+- [Set List of Objects in Swagger API Response](https://www.baeldung.com/java-swagger-set-list-response)

spring-boot-modules/spring-boot-springdoc/src/main/java/com/baeldung/swaggerresponseapi/SwaggerResponseApiApplication.java

@@ -0,0 +1,13 @@
+package com.baeldung.swaggerresponseapi;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class SwaggerResponseApiApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(SwaggerResponseApiApplication.class, args);
+    }
+
+}

spring-boot-modules/spring-boot-springdoc/src/main/java/com/baeldung/swaggerresponseapi/controller/ProductController.java

@@ -0,0 +1,38 @@
+package com.baeldung.swaggerresponseapi.controller;
+
+import com.baeldung.swaggerresponseapi.model.Product;
+import com.baeldung.swaggerresponseapi.service.ProductService;
+
+import io.swagger.v3.oas.annotations.media.ArraySchema;
+import io.swagger.v3.oas.annotations.media.Content;
+import io.swagger.v3.oas.annotations.media.Schema;
+import io.swagger.v3.oas.annotations.responses.ApiResponse;
+import io.swagger.v3.oas.annotations.responses.ApiResponses;
+
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.List;
+
+@RestController
+public class ProductController {
+    private final ProductService productService;
+
+    public ProductController(ProductService productService) {
+        this.productService = productService;
+    }
+
+    @PostMapping("/create")
+    public Product addProduct(@RequestBody Product product) {
+        return productService.addProducts(product);
+    }
+
+    @ApiResponses(value = { @ApiResponse(content = { @Content(mediaType = "application/json",
+                            array = @ArraySchema(schema = @Schema(implementation = Product.class))) }) })
+    @GetMapping("/products")
+    public List<Product> getProductsList() {
+        return productService.getProductsList();
+    }
+}