Merge branch 'eugenp:master' into master

apache-cxf-modules/cxf-spring/pom.xml

@@ -43,19 +43,19 @@
         <dependency>
             <groupId>com.sun.xml.ws</groupId>
             <artifactId>jaxws-ri</artifactId>
-            <version>2.3.3</version>
+            <version>${jaxws-ri.version}</version>
             <type>pom</type>
         </dependency>
         <dependency>
             <groupId>javax.servlet</groupId>
             <artifactId>javax.servlet-api</artifactId>
-            <version>4.0.1</version>
+            <version>${javax.servlet-api.version}</version>
             <scope>provided</scope>
         </dependency>
         <dependency>
             <groupId>javax.servlet</groupId>
             <artifactId>jstl</artifactId>
-            <version>1.2</version>
+            <version>${jstl.version}</version>
         </dependency>
     </dependencies>
 
@@ -117,7 +117,9 @@
     <properties>
         <spring.version>5.3.25</spring.version>
         <cargo-maven2-plugin.version>1.6.1</cargo-maven2-plugin.version>
-        <maven-war-plugin.version>3.3.2</maven-war-plugin.version>
+        <jstl.version>1.2</jstl.version>
+        <javax.servlet-api.version>4.0.1</javax.servlet-api.version>
+        <jaxws-ri.version>2.3.3</jaxws-ri.version>
     </properties>
 
 </project>

apache-httpclient4/pom.xml

@@ -241,8 +241,6 @@
         <httpcore.version>4.4.16</httpcore.version>
         <httpclient.version>4.5.14</httpclient.version>
         <mockserver.version>5.11.2</mockserver.version>
-        <!-- maven plugins -->
-        <maven-war-plugin.version>3.3.2</maven-war-plugin.version>
     </properties>
 
 </project>

apache-libraries-2/pom.xml

@@ -21,7 +21,6 @@
         </dependency>
     </dependencies>
 
-
     <properties>
         <javax.validation.validation-api.version>2.0.1.Final</javax.validation.validation-api.version>
     </properties>

apache-libraries-2/src/main/java/com/baeldung/xsltProcessing/XSLTProcessorWithParametersAndOption.java

@@ -0,0 +1,31 @@
+package com.baeldung.xsltProcessing;
+
+import javax.xml.transform.*;
+import javax.xml.transform.stream.StreamResult;
+import javax.xml.transform.stream.StreamSource;
+import java.io.File;
+
+public class XSLTProcessorWithParametersAndOption {
+    public static void transformXMLWithParametersAndOption(
+            String inputXMLPath,
+            String xsltPath,
+            String outputHTMLPath,
+            String companyName,
+            boolean enableIndentation
+    ) throws TransformerException {
+        TransformerFactory transformerFactory = TransformerFactory.newInstance();
+        Source xsltSource = new StreamSource(new File(xsltPath));
+        Transformer transformer = transformerFactory.newTransformer(xsltSource);
+
+        transformer.setParameter("companyName", companyName);
+
+        if (enableIndentation) {
+            transformer.setOutputProperty(OutputKeys.INDENT, "yes");
+        }
+
+        Source xmlSource = new StreamSource(new File(inputXMLPath));
+        Result outputResult = new StreamResult(new File(outputHTMLPath));
+
+        transformer.transform(xmlSource, outputResult);
+    }
+}

apache-libraries-2/src/main/java/com/baeldung/xsltProcessing/XSLTProcessorWithTemplate.java

@@ -0,0 +1,21 @@
+package com.baeldung.xsltProcessing;
+
+import javax.xml.transform.*;
+import javax.xml.transform.stream.StreamResult;
+import javax.xml.transform.stream.StreamSource;
+import java.io.File;
+
+public class XSLTProcessorWithTemplate {
+    public static void transformXMLUsingTemplate(String inputXMLPath, String xsltPath, String outputHTMLPath) throws TransformerException {
+        TransformerFactory transformerFactory = TransformerFactory.newInstance();
+        Source xsltSource = new StreamSource(new File(xsltPath));
+        Templates templates = transformerFactory.newTemplates(xsltSource);
+
+        Transformer transformer = templates.newTransformer();
+
+        Source xmlSource = new StreamSource(new File(inputXMLPath));
+        Result outputResult = new StreamResult(new File(outputHTMLPath));
+
+        transformer.transform(xmlSource, outputResult);
+    }
+}

apache-velocity/pom.xml

@@ -63,7 +63,6 @@
         <org.apache.httpcomponents.version>4.5.2</org.apache.httpcomponents.version>
         <velocity-version>1.7</velocity-version>
         <velocity-tools-version>2.0</velocity-tools-version>
-        <maven-war-plugin.version>3.3.2</maven-war-plugin.version>
     </properties>
 
 </project>

asm/pom.xml

@@ -49,7 +49,6 @@
 
     <properties>
         <asm.version>5.2</asm.version>
-        <maven-jar-plugin.version>2.4</maven-jar-plugin.version>
     </properties>
 
 </project>

aws-modules/aws-s3-update-object/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"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+<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>
     <artifactId>aws-s3-update-object</artifactId>
     <version>0.0.1-SNAPSHOT</version>

aws-modules/aws-s3/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"
-         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>aws-s3</artifactId>
     <version>0.1.0-SNAPSHOT</version>

azure/pom.xml

@@ -122,7 +122,6 @@
         <docker.image.prefix>${azure.containerRegistry}.azurecr.io</docker.image.prefix>
         <docker-maven-plugin.version>1.1.0</docker-maven-plugin.version>
         <azure-webapp-maven-plugin.version>1.1.0</azure-webapp-maven-plugin.version>
-        <maven-war-plugin.version>3.3.2</maven-war-plugin.version>
     </properties>
 
 </project>

core-groovy-modules/pom.xml

@@ -27,6 +27,7 @@
         <hsqldb.version>2.7.1</hsqldb.version>
         <spock-core.version>2.3-groovy-3.0</spock-core.version>
         <gmavenplus-plugin.version>2.1.0</gmavenplus-plugin.version>
+        <maven-failsafe-plugin.version>2.21.0</maven-failsafe-plugin.version>
     </properties>
 
 </project>

core-java-modules/core-java-14/pom.xml

@@ -48,7 +48,6 @@
 
     <properties>
         <maven.compiler.release>14</maven.compiler.release>
-        <maven-compiler-plugin.version>3.8.1</maven-compiler-plugin.version>
         <surefire.plugin.version>3.0.0-M3</surefire.plugin.version>
     </properties>
 

core-java-modules/core-java-15/pom.xml

@@ -53,7 +53,6 @@
 
     <properties>
         <maven.compiler.release>15</maven.compiler.release>
-        <maven-compiler-plugin.version>3.8.1</maven-compiler-plugin.version>
         <surefire.plugin.version>3.0.0-M3</surefire.plugin.version>
     </properties>
 

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

@@ -152,7 +152,6 @@
         <awaitility.version>4.0.2</awaitility.version>
         <maven.compiler.source>1.9</maven.compiler.source>
         <maven.compiler.target>1.9</maven.compiler.target>
-        <maven-jar-plugin.version>3.2.0</maven-jar-plugin.version>
     </properties>
 
 </project>

core-java-modules/core-java-arrays-operations-advanced/src/main/java/com/baeldung/arraymiddle/MiddleOfArray.java

@@ -0,0 +1,65 @@
+package com.baeldung.arraymiddle;
+
+import java.util.Arrays;
+
+import org.apache.commons.lang3.ObjectUtils;
+
+public class MiddleOfArray {
+    int[] middleOfArray(int[] array) {
+        if (ObjectUtils.isEmpty(array) || array.length < 3)
+            return array;
+        int n = array.length;
+        int mid = n / 2;
+        if (n % 2 == 0) {
+            int mid2 = mid - 1;
+            return new int[] { array[mid2], array[mid] };
+        } else {
+            return new int[] { array[mid] };
+        }
+    }
+
+    int[] middleOfArrayWithStartEndNaive(int[] array, int start, int end) {
+        int mid = (start + end) / 2;
+        int n = end - start;
+        if (n % 2 == 0) {
+            int mid2 = mid - 1;
+            return new int[] { array[mid2], array[mid] };
+        } else {
+            return new int[] { array[mid] };
+        }
+    }
+
+    int[] middleOfArrayWithStartEnd(int[] array, int start, int end) {
+        int mid = start + (end - start) / 2;
+        int n = end - start;
+        if (n % 2 == 0) {
+            int mid2 = mid - 1;
+            return new int[] { array[mid2], array[mid] };
+        } else {
+            return new int[] { array[mid] };
+        }
+    }
+
+    int[] middleOfArrayWithStartEndBitwise(int[] array, int start, int end) {
+        int mid = (start + end) >>> 1;
+        int n = end - start;
+        if (n % 2 == 0) {
+            int mid2 = mid - 1;
+            return new int[] { array[mid2], array[mid] };
+        } else {
+            return new int[] { array[mid] };
+        }
+    }
+
+    int medianOfArray(int[] array, int start, int end) {
+        Arrays.sort(array); // for safety. This can be ignored
+        int mid = (start + end) >>> 1;
+        int n = end - start;
+        if (n % 2 == 0) {
+            int mid2 = mid - 1;
+            return (array[mid2] + array[mid]) / 2;
+        } else {
+            return array[mid];
+        }
+    }
+}

core-java-modules/core-java-arrays-operations-advanced/src/test/java/com/baeldung/arraymiddle/MiddleOfArrayUnitTest.java

@@ -0,0 +1,89 @@
+package com.baeldung.arraymiddle;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class MiddleOfArrayUnitTest {
+
+    @Test
+    public void givenArrayOfEvenLength_whenMiddleOfArray_thenReturn2Values() {
+        int[] array = new int[100];
+        for (int i = 0; i < array.length; i++) {
+            array[i] = i + 1;
+        }
+        int[] expectedMidArray = { 50, 51 };
+        MiddleOfArray middleOfArray = new MiddleOfArray();
+        Assert.assertArrayEquals(expectedMidArray, middleOfArray.middleOfArray(array));
+    }
+
+    @Test
+    public void givenArrayOfEdgeCaseLength_whenMiddleOfArray_thenReturn2Values() {
+        int[] array = new int[0];
+        int[] expectedMidArray = new int[0];
+        MiddleOfArray middleOfArray = new MiddleOfArray();
+        Assert.assertArrayEquals(expectedMidArray, middleOfArray.middleOfArray(array));
+
+        array = new int[] { 1, 2 };
+        expectedMidArray = new int[] { 1, 2 };
+
+        Assert.assertArrayEquals(expectedMidArray, middleOfArray.middleOfArray(array));
+    }
+
+    @Test
+    public void givenArrayOfOddLength_whenMiddleOfArray_thenReturnMid() {
+        int[] array = new int[99];
+        for (int i = 0; i < array.length; i++) {
+            array[i] = i + 1;
+        }
+        int[] expectedMidArray = { 50 };
+        MiddleOfArray middleOfArray = new MiddleOfArray();
+        Assert.assertArrayEquals(expectedMidArray, middleOfArray.middleOfArray(array));
+    }
+
+    @Test
+    public void givenArrayWithStartAndEnd_whenMiddleOfArray_thenReturnMid() {
+        int[] array = new int[100];
+        for (int i = 0; i < array.length; i++) {
+            array[i] = i + 1;
+        }
+        int[] expectedMidArray = { 58 };
+        MiddleOfArray middleOfArray = new MiddleOfArray();
+        Assert.assertArrayEquals(expectedMidArray, middleOfArray.middleOfArrayWithStartEndNaive(array, 55, 60));
+
+        expectedMidArray = new int[] { 58, 59 };
+        Assert.assertArrayEquals(expectedMidArray, middleOfArray.middleOfArrayWithStartEndNaive(array, 56, 60));
+    }
+
+    @Test
+    public void givenArrayWithStartAndEndOptimized_whenMiddleOfArray_thenReturnMid() {
+        int[] array = new int[100];
+        for (int i = 0; i < array.length; i++) {
+            array[i] = i + 1;
+        }
+        int[] expectedMidArray = { 78 };
+        MiddleOfArray middleOfArray = new MiddleOfArray();
+        Assert.assertArrayEquals(expectedMidArray, middleOfArray.middleOfArrayWithStartEnd(array, 55, 100));
+    }
+
+    @Test
+    public void givenArrayWithStartAndEndBitwise_whenMiddleOfArray_thenReturnMid() {
+        int[] array = new int[100];
+        for (int i = 0; i < array.length; i++) {
+            array[i] = i + 1;
+        }
+        int[] expectedMidArray = { 78 };
+        MiddleOfArray middleOfArray = new MiddleOfArray();
+        Assert.assertArrayEquals(expectedMidArray, middleOfArray.middleOfArrayWithStartEndBitwise(array, 55, 100));
+    }
+
+    @Test
+    public void givenArrayWithStartAndEnd_whenMedianOfArray_thenReturnMid() {
+        int[] array = new int[100];
+        for (int i = 0; i < array.length; i++) {
+            array[i] = i + 1;
+        }
+        int expectMedian = 50;
+        MiddleOfArray middleOfArray = new MiddleOfArray();
+        Assert.assertEquals(expectMedian, middleOfArray.medianOfArray(array, 0, 100));
+    }
+}

core-java-modules/core-java-collections-list-5/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"
-         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>core-java-collections-list-5</artifactId>
     <name>core-java-collections-list-5</name>

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

@@ -58,4 +58,8 @@ public class DataQueue {
             return queue.poll();
         }
     }
+
+    public Integer getSize() {
+        return queue.size();
+    }
 }

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

@@ -1,12 +1,13 @@
 package com.baeldung.producerconsumer;
 
+import java.util.concurrent.locks.ReentrantLock;
 import java.util.logging.Logger;
 
 public class Producer implements Runnable {
     private static final Logger log = Logger.getLogger(Producer.class.getCanonicalName());
     private final DataQueue dataQueue;
-
     private static int idSequence = 0;
+    final ReentrantLock lock = new ReentrantLock();
 
     public Producer(DataQueue dataQueue) {
         this.dataQueue = dataQueue;
@@ -19,22 +20,38 @@ public class Producer implements Runnable {
 
     public void produce() {
         while (dataQueue.runFlag) {
-            while (dataQueue.isFull() && dataQueue.runFlag) {
-                try {
-                    dataQueue.waitOnFull();
-                } catch (InterruptedException e) {
-                    e.printStackTrace();
+
+            try {
+                lock.lock();
+
+                while (dataQueue.isFull() && dataQueue.runFlag) {
+                    try {
+                        dataQueue.waitOnFull();
+                    } catch (InterruptedException e) {
+                        e.printStackTrace();
+                        break;
+                    }
+                }
+
+                if (!dataQueue.runFlag) {
                     break;
                 }
-            }
-            if (!dataQueue.runFlag) {
-                break;
-            }
-            Message message = generateMessage();
-            dataQueue.add(message);
-            dataQueue.notifyAllForEmpty();
 
+                Message message = generateMessage();
+                dataQueue.add(message);
+                dataQueue.notifyAllForEmpty();
+
+                log.info("Size of the queue is: " + dataQueue.getSize());
+
+            }
+            finally{
+                lock.unlock();
+            }
+
+            //Sleeping on random time to make it realistic
+            ThreadUtil.sleep((long) (Math.random() * 100));
         }
+
         log.info("Producer Stopped");
     }
 
@@ -43,9 +60,6 @@ public class Producer implements Runnable {
         log.info(String.format("[%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;
     }
 

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

@@ -36,8 +36,8 @@ public class ProducerConsumerDemonstrator {
 
     public static void demoMultipleProducersAndMultipleConsumers() {
         DataQueue dataQueue = new DataQueue(MAX_QUEUE_CAPACITY);
-        int producerCount = 3;
-        int consumerCount = 3;
+        int producerCount = 5;
+        int consumerCount = 5;
         List<Thread> threads = new ArrayList<>();
         Producer producer = new Producer(dataQueue);
         for(int i = 0; i < producerCount; i++) {
@@ -45,6 +45,7 @@ public class ProducerConsumerDemonstrator {
             producerThread.start();
             threads.add(producerThread);
         }
+
         Consumer consumer = new Consumer(dataQueue);
         for(int i = 0; i < consumerCount; i++) {
             Thread consumerThread = new Thread(consumer);
@@ -52,8 +53,8 @@ public class ProducerConsumerDemonstrator {
             threads.add(consumerThread);
         }
 
-        // let threads run for two seconds
-        sleep(2000);
+        // let threads run for ten seconds
+        sleep(10000);
 
         // Stop threads
         producer.stop();

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

@@ -37,20 +37,19 @@
                     <compilerArgs>--enable-preview</compilerArgs>
                 </configuration>
             </plugin>
-                <plugin>
-                    <groupId>org.apache.maven.plugins</groupId>
-                    <artifactId>maven-surefire-plugin</artifactId>
-                    <version>${surefire.plugin.version}</version>
-                    <configuration>
-                        <argLine>--enable-preview</argLine>
-                    </configuration>
-                </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <version>${surefire.plugin.version}</version>
+                <configuration>
+                    <argLine>--enable-preview</argLine>
+                </configuration>
+            </plugin>
         </plugins>
     </build>
 
     <properties>
         <maven.compiler.source.version>14</maven.compiler.source.version>
-        <maven-compiler-plugin.version>3.8.1</maven-compiler-plugin.version>
         <maven.compiler.target.version>14</maven.compiler.target.version>
         <surefire.plugin.version>3.0.0-M3</surefire.plugin.version>
     </properties>

core-java-modules/core-java-date-operations-3/pom.xml

@@ -12,7 +12,7 @@
         <artifactId>core-java-modules</artifactId>
         <version>0.0.1-SNAPSHOT</version>
     </parent>
-    
+
     <dependencies>
         <dependency>
             <groupId>joda-time</groupId>
@@ -25,7 +25,7 @@
             <version>${commons-lang3.version}</version>
         </dependency>
     </dependencies>
-    
+
     <properties>
         <joda-time.version>2.12.5</joda-time.version>
         <commons-lang3.version>3.12.0</commons-lang3.version>

core-java-modules/core-java-date-operations-3/src/main/java/com/baeldung/epochconversion/EpochToLocalDate.java

@@ -0,0 +1,24 @@
+package com.baeldung.epochconversion;
+
+import java.time.Instant;
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.time.ZoneId;
+
+public class EpochToLocalDate {
+
+    public static void main(String[] args) {
+        long millisSinceEpoch = 2131242L;
+        ZoneId zoneId = ZoneId.of("Europe/Amsterdam"); // or: ZoneId.systemDefault();
+        // to get All Zone Ids available, we can use the function below
+        // Set<String> allZoneIds =  ZoneId.getAvailableZoneIds();
+        LocalDate date =
+            Instant.ofEpochMilli(millisSinceEpoch)
+                .atZone(zoneId)
+                .toLocalDate();
+        LocalDateTime time =
+            Instant.ofEpochMilli(millisSinceEpoch)
+                .atZone(zoneId)
+                .toLocalDateTime();
+    }
+}

core-java-modules/core-java-date-operations-3/src/main/java/com/baeldung/epochconversion/LocalDateToEpoch.java

@@ -0,0 +1,18 @@
+package com.baeldung.epochconversion;
+
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.time.ZoneId;
+
+public class LocalDateToEpoch {
+
+    public static void main(String[] args) {
+        ZoneId zoneId = ZoneId.of("Europe/Amsterdam"); // or: ZoneId.systemDefault()
+        LocalDate date = LocalDate.now();
+        long epochMilliSecondsAtDate = date.atStartOfDay(zoneId).toInstant().toEpochMilli();
+
+        // epoch for time
+        LocalDateTime time = LocalDateTime.parse("2019-11-15T13:15:30");
+        long epochMilliSecondsAtTime = time.atZone(zoneId).toInstant().toEpochMilli();
+    }
+}

core-java-modules/core-java-date-operations-3/src/test/java/com/baeldung/epochconversion/EpochToLocalDateUnitTest.java

@@ -0,0 +1,39 @@
+package com.baeldung.epochconversion;
+
+import org.junit.jupiter.api.Test;
+
+import java.time.Instant;
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.time.ZoneId;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class EpochToLocalDateUnitTest {
+
+    @Test
+    void givenEpoch_thenComputeLocalDateCorrectly() {
+        ZoneId zoneId = ZoneId.systemDefault();
+        LocalDate expectedDate = LocalDate.of(1995, 4, 15);
+        long date = expectedDate.atStartOfDay(zoneId).toInstant().toEpochMilli();
+
+        LocalDate actualDate =
+            Instant.ofEpochMilli(date)
+                .atZone(zoneId)
+                .toLocalDate();
+        assertEquals(expectedDate, actualDate);
+    }
+
+    @Test
+    void givenEpoch_thenComputeLocalDateTimeCorrectly() {
+        ZoneId zoneId = ZoneId.systemDefault();
+        LocalDateTime expectedTime = LocalDateTime.parse("2019-11-15T13:15:30");
+        long time = expectedTime.atZone(zoneId).toInstant().toEpochMilli();
+
+        LocalDateTime actualTime =
+            Instant.ofEpochMilli(time)
+                .atZone(zoneId)
+                .toLocalDateTime();
+        assertEquals(expectedTime, actualTime);
+    }
+}

core-java-modules/core-java-date-operations-3/src/test/java/com/baeldung/epochconversion/LocalDateTimeToEpochUnitTest.java

@@ -0,0 +1,37 @@
+package com.baeldung.epochconversion;
+
+import org.junit.jupiter.api.Test;
+
+import java.time.Instant;
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.time.ZoneId;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class LocalDateTimeToEpochUnitTest {
+
+    @Test
+    void givenDate_thenComputeEpochCorrectly() {
+        ZoneId zoneId = ZoneId.of("Europe/Tallinn");
+        long expectedEpoch = LocalDate.now().toEpochDay();
+        LocalDateTime givenDate = Instant.ofEpochMilli(expectedEpoch)
+            .atZone(zoneId)
+            .toLocalDateTime();
+
+        long actualEpoch = givenDate.atZone(zoneId).toInstant().toEpochMilli();
+        assertEquals(expectedEpoch, actualEpoch);
+    }
+
+    @Test
+    void givenTime_thenComputeEpochCorrectly() {
+        ZoneId zoneId = ZoneId.of("Europe/Amsterdam");
+        long expectedEpoch = Instant.now().toEpochMilli();
+        LocalDateTime givenTime = Instant.ofEpochMilli(expectedEpoch)
+            .atZone(zoneId)
+            .toLocalDateTime();
+
+        long actualEpoch = givenTime.atZone(zoneId).toInstant().toEpochMilli();
+        assertEquals(expectedEpoch, actualEpoch);
+    }
+}

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

@@ -132,7 +132,6 @@
         <!-- Mime Type Libraries -->
         <tika.version>2.8.0</tika.version>
         <jmime-magic.version>0.1.5</jmime-magic.version>
-        <maven-jar-plugin.version>3.3.0</maven-jar-plugin.version>
         <fscontext.version>4.4.2</fscontext.version>
         <jakarta-activation-api.version>2.1.2</jakarta-activation-api.version>
         <angus-activation.version>2.0.1</angus-activation.version>

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

@@ -275,7 +275,6 @@
         <!-- maven plugins -->
         <javamoney.moneta.version>1.1</javamoney.moneta.version>
         <maven-javadoc-plugin.version>3.0.0-M1</maven-javadoc-plugin.version>
-        <maven-jar-plugin.version>3.0.2</maven-jar-plugin.version>
         <onejar-maven-plugin.version>1.4.4</onejar-maven-plugin.version>
         <maven-shade-plugin.version>3.1.1</maven-shade-plugin.version>
         <maven-assembly-plugin.version>3.3.0</maven-assembly-plugin.version>

core-java-modules/core-java-lang-6/pom.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xmlns="http://maven.apache.org/POM/4.0.0"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    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>
     <parent>
         <groupId>com.baeldung.core-java-modules</groupId>

core-java-modules/core-java-lang-6/src/main/java/com/baeldung/stopexecution/InterruptThread.java

@@ -0,0 +1,13 @@
+package com.baeldung.stopexecution;
+
+public class InterruptThread extends Thread {
+    @Override
+    public void run() {
+        while (!isInterrupted()) {
+            if (isInterrupted()) {
+                break;
+            }
+            // business logic
+        }
+    }
+}