[BAEL-3936] Merged with upstream and fixed conflicts

core-java-modules/core-java-14/src/main/java/com/baeldung/java14/npe/HelpfulNullPointerException.java

@@ -1,4 +1,4 @@
-package com.baeldung.java14.helpfulnullpointerexceptions;
+package com.baeldung.java14.npe;
 
 public class HelpfulNullPointerException {
 

core-java-modules/core-java-14/src/test/java/com/baeldung/java14/npe/HelpfulNullPointerExceptionUnitTest.java

@@ -1,4 +1,4 @@
-package com.baeldung.java14.helpfulnullpointerexceptions;
+package com.baeldung.java14.npe;
 
 import org.junit.Test;
 

core-java-modules/core-java-concurrency-2/README.md

@@ -4,4 +4,5 @@
 
 ### Relevant Articles: 
 - [Using a Mutex Object in Java](https://www.baeldung.com/java-mutex)
+- [Testing Multi-Threaded Code in Java] (https://www.baeldung.com/java-testing-multithreaded)
 

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

@@ -16,6 +16,38 @@
         <relativePath>../../parent-java</relativePath>
     </parent>
 	
+	<dependencies>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>4.13</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.googlecode.thread-weaver</groupId>
+            <artifactId>threadweaver</artifactId>
+            <version>0.2</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.google.code.tempus-fugit</groupId>
+            <artifactId>tempus-fugit</artifactId>
+            <version>1.1</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.googlecode.multithreadedtc</groupId>
+            <artifactId>multithreadedtc</artifactId>
+            <version>1.01</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.openjdk.jcstress</groupId>
+            <artifactId>jcstress-core</artifactId>
+            <version>0.5</version>
+        </dependency>
+    </dependencies>
+
     <build>
         <finalName>core-java-concurrency-2</finalName>
         <resources>
@@ -24,6 +56,51 @@
                 <filtering>true</filtering>
             </resource>
         </resources>
+		
+		<plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.1</version>
+                <configuration>
+                    <compilerVersion>${javac.target}</compilerVersion>
+                    <source>${javac.target}</source>
+                    <target>${javac.target}</target>
+                </configuration>
+            </plugin>
+
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-shade-plugin</artifactId>
+                <version>2.2</version>
+                <executions>
+                    <execution>
+                        <id>main</id>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>shade</goal>
+                        </goals>
+                        <configuration>
+                            <finalName>jcstress</finalName>
+                            <transformers>
+                                <transformer
+                                    implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
+                                    <mainClass>org.openjdk.jcstress.Main</mainClass>
+                                </transformer>
+                                <transformer
+                                    implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
+                                    <resource>META-INF/TestList</resource>
+                                </transformer>
+                            </transformers>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
     </build>
     
+    <properties>
+        <javac.target>1.8</javac.target>
+    </properties>
+
 </project>

core-java-modules/core-java-concurrency-2/src/test/java/com/baeldung/concurrent/MyCounterMultithreadedTCUnitTest.java

@@ -1,5 +1,6 @@
 package com.baeldung.concurrent;
 
+import org.junit.Ignore;
 import org.junit.Test;
 
 import edu.umd.cs.mtc.MultithreadedTestCase;
@@ -28,6 +29,7 @@ public class MyCounterMultithreadedTCUnitTest extends MultithreadedTestCase {
     	assertEquals(2, counter.getCount());
     }
 
+    @Ignore
     @Test
     public void testCounter() throws Throwable {
         TestFramework.runManyTimes(new MyCounterMultithreadedTCUnitTest(), 1000);

core-java-modules/core-java-concurrency-2/src/test/java/com/baeldung/concurrent/MyCounterSimpleUnitTest.java

@@ -6,6 +6,7 @@ import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 
+import org.junit.Ignore;
 import org.junit.Test;
 
 public class MyCounterSimpleUnitTest {
@@ -18,7 +19,8 @@ public class MyCounterSimpleUnitTest {
         assertEquals(500, counter.getCount());
     }
 
-    // @Test
+    @Ignore
+    @Test
     public void testCounterWithConcurrency() throws InterruptedException {
         int numberOfThreads = 100;
         ExecutorService service = Executors.newFixedThreadPool(10);
@@ -34,7 +36,8 @@ public class MyCounterSimpleUnitTest {
         assertEquals(numberOfThreads, counter.getCount());
     }
 
-    // @Test
+    @Ignore
+    @Test
     public void testSummationWithConcurrencyAndWait() throws InterruptedException {
         int numberOfThreads = 2;
         ExecutorService service = Executors.newFixedThreadPool(10);

core-java-modules/core-java-concurrency-2/src/test/java/com/baeldung/concurrent/MyCounterTempusFugitUnitTest.java

@@ -3,6 +3,7 @@ package com.baeldung.concurrent;
 import static org.junit.Assert.assertEquals;
 
 import org.junit.AfterClass;
+import org.junit.Ignore;
 import org.junit.Rule;
 import org.junit.Test;
 
@@ -20,6 +21,7 @@ public class MyCounterTempusFugitUnitTest {
 
     private static MyCounter counter = new MyCounter();
 
+    @Ignore
     @Test
     @Concurrent(count = 2)
     @Repeating(repetition = 10)

core-java-modules/core-java-concurrency-2/src/test/java/com/baeldung/concurrent/MyCounterThreadWeaverUnitTest.java

@@ -2,6 +2,7 @@ package com.baeldung.concurrent;
 
 import static org.junit.Assert.assertEquals;
 
+import org.junit.Ignore;
 import org.junit.Test;
 
 import com.google.testing.threadtester.AnnotatedTestRunner;
@@ -34,6 +35,7 @@ public class MyCounterThreadWeaverUnitTest {
         assertEquals(2, counter.getCount());
     }
 
+    @Ignore
     @Test
     public void testCounter() {
         new AnnotatedTestRunner().runTests(this.getClass(), MyCounter.class);

core-java-modules/core-java-concurrency-testing/README.md

@@ -1,7 +0,0 @@
-=========
-
-## Core Java Concurrency Testing Examples
-
-### Relevant Articles: 
-- [Testing Multi-Threaded Code in Java](https://www.baeldung.com/java-testing-multithreaded)
-

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

@@ -1,93 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-    <modelVersion>4.0.0</modelVersion>
-    <artifactId>core-java-concurrency-testing</artifactId>
-    <version>0.1.0-SNAPSHOT</version>
-    <name>core-java-concurrency-testing</name>
-    <packaging>jar</packaging>
-
-    <parent>
-        <groupId>com.baeldung</groupId>
-        <artifactId>parent-java</artifactId>
-        <version>0.0.1-SNAPSHOT</version>
-        <relativePath>../../parent-java</relativePath>
-    </parent>
-	
-    <dependencies>
-        <dependency>
-            <groupId>junit</groupId>
-            <artifactId>junit</artifactId>
-            <version>4.13</version>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>com.googlecode.thread-weaver</groupId>
-            <artifactId>threadweaver</artifactId>
-            <version>0.2</version>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>com.google.code.tempus-fugit</groupId>
-            <artifactId>tempus-fugit</artifactId>
-            <version>1.1</version>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>com.googlecode.multithreadedtc</groupId>
-            <artifactId>multithreadedtc</artifactId>
-            <version>1.01</version>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>org.openjdk.jcstress</groupId>
-            <artifactId>jcstress-core</artifactId>
-            <version>0.5</version>
-        </dependency>
-    </dependencies>
-
-    <build>
-        <plugins>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.1</version>
-                <configuration>
-                    <compilerVersion>${javac.target}</compilerVersion>
-                    <source>${javac.target}</source>
-                    <target>${javac.target}</target>
-                </configuration>
-            </plugin>
-
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-shade-plugin</artifactId>
-                <version>2.2</version>
-                <executions>
-                    <execution>
-                        <id>main</id>
-                        <phase>package</phase>
-                        <goals>
-                            <goal>shade</goal>
-                        </goals>
-                        <configuration>
-                            <finalName>jcstress</finalName>
-                            <transformers>
-                                <transformer
-                                    implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
-                                    <mainClass>org.openjdk.jcstress.Main</mainClass>
-                                </transformer>
-                                <transformer
-                                    implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
-                                    <resource>META-INF/TestList</resource>
-                                </transformer>
-                            </transformers>
-                        </configuration>
-                    </execution>
-                </executions>
-            </plugin>
-        </plugins>
-    </build>
-
-</project>

core-java-modules/core-java-concurrency-testing/src/main/resources/logback.xml

@@ -1,19 +0,0 @@
-<?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>
-
-    <logger name="org.springframework" level="WARN" />
-    <logger name="org.springframework.transaction" level="WARN" />
-
-    <!-- in order to debug some marshalling issues, this needs to be TRACE -->
-    <logger name="org.springframework.web.servlet.mvc" level="WARN" />
-
-    <root level="INFO">
-        <appender-ref ref="STDOUT" />
-    </root>
-</configuration>

core-java-modules/core-java-concurrency-testing/src/test/resources/.gitignore

@@ -1,13 +0,0 @@
-*.class
-
-#folders#
-/target
-/neoDb*
-/data
-/src/main/webapp/WEB-INF/classes
-*/META-INF/*
-
-# Packaged files #
-*.jar
-*.war
-*.ear

core-java-modules/core-java-string-operations-2/README.md

@@ -11,4 +11,5 @@ This module contains articles about string operations.
 - [Case-Insensitive String Matching in Java](https://www.baeldung.com/java-case-insensitive-string-matching)
 - [L-Trim and R-Trim Alternatives in Java](https://www.baeldung.com/java-trim-alternatives)
 - [Java Convert PDF to Base64](https://www.baeldung.com/java-convert-pdf-to-base64)
+- [Encode a String to UTF-8 in Java](https://www.baeldung.com/java-string-encode-utf-8)
 - More articles: [[<-- prev]](../core-java-string-operations)

core-java-modules/core-java-string-operations-2/src/test/java/com/baeldung/encodetoutf8/StringEncodeUnitTest.java

@@ -0,0 +1,73 @@
+package com.baeldung.encodetoutf8;
+
+import static org.junit.Assert.assertNotEquals;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.nio.ByteBuffer;
+import java.nio.charset.StandardCharsets;
+
+import org.apache.commons.codec.binary.StringUtils;
+import org.junit.Test;
+
+public class StringEncodeUnitTest {
+
+    @Test
+    public void givenGermanAsciiString_whenComparing_thenCompareNotEquals() {
+        String germanString = "Entwickeln Sie mit Vergnügen";
+        byte[] germanBytes = germanString.getBytes();
+
+        String asciiEncodedString = new String(germanBytes, StandardCharsets.US_ASCII);
+
+        assertNotEquals(germanString, asciiEncodedString);
+    }
+
+    @Test
+    public void givenUsAsciiString_whenComparing_thenCompareNotEquals() {
+        String englishString = "Develop with pleasure";
+        byte[] englishBytes = englishString.getBytes();
+
+        String asciiEncondedEnglishString = new String(englishBytes, StandardCharsets.US_ASCII);
+
+        assertEquals(englishString, asciiEncondedEnglishString);
+    }
+
+    /*
+     * ApacheCommonsCodecEncode
+     */
+    @Test
+    public void givenSomeUnencodedString_whenApacheCommonsCodecEncode_thenCompareEquals() {
+        String rawString = "Entwickeln Sie mit Vergnügen";
+        byte[] bytes = StringUtils.getBytesUtf8(rawString);
+
+        String utf8EncodedString = StringUtils.newStringUtf8(bytes);
+
+        assertEquals(rawString, utf8EncodedString);
+    }
+
+    /*
+     * CoreJavaEncode
+     */
+    @Test
+    public void givenSomeUnencodedString_whenCoreJavaEncode_thenCompareEquals() {
+        String rawString = "Entwickeln Sie mit Vergnügen";
+        byte[] bytes = rawString.getBytes(StandardCharsets.UTF_8);
+
+        String utf8EncodedString = new String(bytes, StandardCharsets.UTF_8);
+
+        assertEquals(rawString, utf8EncodedString);
+    }
+
+    /*
+     * Java7StandardCharsetsEncode
+     */
+    @Test
+    public void givenSomeUnencodedString_whenJava7StandardCharsetsEncode_thenCompareEquals() {
+        String rawString = "Entwickeln Sie mit Vergnügen";
+        ByteBuffer buffer = StandardCharsets.UTF_8.encode(rawString);
+
+        String utf8EncodedString = StandardCharsets.UTF_8.decode(buffer)
+            .toString();
+
+        assertEquals(rawString, utf8EncodedString);
+    }
+}

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

@@ -96,7 +96,7 @@
         <!-- testing -->
         <assertj.version>3.6.1</assertj.version>
         <asspectj.version>1.8.9</asspectj.version>
-        <powermock.version>2.0.0-RC.4</powermock.version>
+        <powermock.version>2.0.0</powermock.version>
         <jmockit.version>1.44</jmockit.version>
         <!-- plugins -->
         <maven-surefire-plugin.version>2.22.1</maven-surefire-plugin.version>

core-java-modules/core-java/src/main/java/com/baeldung/objectclass/Borrower.java

@@ -0,0 +1,23 @@
+package com.baeldung.objectclass;
+
+import lombok.Data;
+
+@Data
+public class Borrower extends User {
+    
+    private double totalLoanAmount;
+    
+    public double requestLoan(double amount) {
+        totalLoanAmount = amount;
+        return totalLoanAmount;
+    }
+    
+    public double increaseLoan(double increaseBy) {
+        return totalLoanAmount + increaseBy;
+    }
+    
+    public double payLoan(double amount) {
+        return totalLoanAmount - amount;
+    }
+
+}

core-java-modules/core-java/src/main/java/com/baeldung/objectclass/Lender.java

@@ -0,0 +1,20 @@
+package com.baeldung.objectclass;
+
+public class Lender extends User {
+    
+    private double totalInvestmentAmount;
+    
+    public double invest(double amount) {
+        totalInvestmentAmount = amount;
+        return totalInvestmentAmount;
+    }
+    
+    public double increaseInvestment(double increaseBy) {
+        return totalInvestmentAmount + increaseBy;
+    }
+    
+    public double collectDividends() {
+        return totalInvestmentAmount * 0.07;
+    }
+
+}

core-java-modules/core-java/src/main/java/com/baeldung/objectclass/User.java

@@ -0,0 +1,12 @@
+package com.baeldung.objectclass;
+
+import lombok.Data;
+
+@Data
+public class User {
+    
+    private String firstName;
+    private String lastName;
+    
+
+}

core-java-modules/core-java/src/test/java/com/baeldung/objectclass/CreditAppUnitTest.java

@@ -0,0 +1,74 @@
+package com.baeldung.objectclass;
+
+import static org.junit.Assert.assertNotEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.Test;
+
+public class CreditAppUnitTest {
+    
+    @Test
+    public void givenLender_whenInstanceOf_thenReturnTrue() {
+        User lender = new Lender();
+        assertTrue(lender instanceof Lender);
+        assertTrue(lender instanceof User);
+    }
+    
+    @Test
+    public void givenUser_whenInstanceOfLender_thenDowncast() {
+        User user = new Lender();
+        Lender lender = null;
+        
+        if(user instanceof Lender) {
+            lender = (Lender) user;
+        }
+        
+        assertNotNull(lender);
+    }
+    
+    @Test
+    public void givenUser_whenIsInstanceOfLender_thenDowncast() {
+        User user = new Lender();
+        Lender lender = null;
+        
+        if(Lender.class.isInstance(user)) {
+            lender = (Lender) user;
+        }
+        
+        assertNotNull(lender);
+    }
+    
+    @Test
+    public void givenBorrower_whenLoanAmountIsDouble_thenRequestLoan() {
+        Borrower borrower = new Borrower();
+        double amount = 100.0;
+        
+        //if(amount instanceof Double) // Compilation error, no autoboxing
+        if(Double.class.isInstance(amount)) {
+            borrower.requestLoan(amount);
+        }
+        assertEquals(100, borrower.getTotalLoanAmount());
+    }
+    
+    @Test
+    public void givenBorrower_whenLoanAmountIsNotString_thenRequestLoan() {
+        Borrower borrower = new Borrower();
+        Double amount = 100.0;
+        
+        //if(amount instanceof String) // Compilation error, incompatible operands
+        if(!String.class.isInstance(amount)) {
+            borrower.requestLoan(amount);
+        }
+        assertEquals(100, borrower.getTotalLoanAmount());
+    }
+    
+    @Test
+    public void givenLender_whenGetClass_thenEqualsLenderType() {
+        User lender = new Lender();
+        assertEquals(Lender.class, lender.getClass());
+        assertNotEquals(User.class, lender.getClass());
+    }
+
+}

core-kotlin-modules/core-kotlin-collections/src/test/kotlin/com/baeldung/foldvsreduce/FoldAndReduceTest.kt

@@ -0,0 +1,59 @@
+package com.baeldung.foldvsreduce
+
+import org.junit.Test
+import org.junit.jupiter.api.assertThrows
+import java.lang.RuntimeException
+import kotlin.test.assertEquals
+
+class FoldAndReduceTest {
+
+    @Test
+    fun testReduceLimitations() {
+        val numbers: List<Int> = listOf(1, 2, 3)
+        val sum: Number = numbers.reduce { acc, next -> acc + next }
+        assertEquals(6, sum)
+
+        val emptyList = listOf<Int>()
+        assertThrows<RuntimeException> { emptyList.reduce { acc, next -> acc + next } }
+
+        // doesn't compile
+        // val sum = numbers.reduce { acc, next -> acc.toLong() + next.toLong()}
+    }
+
+    @Test
+    fun testFold() {
+
+        val numbers: List<Int> = listOf(1, 2, 3)
+        val sum: Int = numbers.fold(0, { acc, next -> acc + next })
+        assertEquals(6, sum)
+
+        //change result type
+        val sumLong: Long = numbers.fold(0L, { acc, next -> acc + next.toLong() })
+        assertEquals(6L, sumLong)
+
+        val emptyList = listOf<Int>()
+        val emptySum = emptyList.fold(0, { acc, next -> acc + next })
+        assertEquals(0, emptySum)
+
+        //power of changing result type
+        val (even, odd) = numbers.fold(Pair(listOf<Int>(), listOf<Int>()), { acc, next ->
+            if (next % 2 == 0) Pair(acc.first + next, acc.second)
+            else Pair(acc.first, acc.second + next)
+        })
+
+        assertEquals(listOf(2), even)
+        assertEquals(listOf(1, 3), odd)
+    }
+
+    @Test
+    fun testVariationsOfFold() {
+        val numbers = listOf(1, 2, 3)
+        val reversed = numbers.foldRight(listOf<Int>(), { next, acc -> acc + next})
+        assertEquals(listOf(3,2,1), reversed)
+
+        val reversedIndexes = numbers.foldRightIndexed(listOf<Int>(), { i, _, acc -> acc + i })
+        assertEquals(listOf(2,1,0), reversedIndexes)
+    }
+
+
+}

gradle/gradle-employee-app/.gitignore

@@ -0,0 +1,3 @@
+/.idea
+/.gradle
+/build

gradle/gradle-employee-app/build.gradle

@@ -0,0 +1,38 @@
+
+plugins {
+    id 'java-library'
+    id 'application'
+}
+
+apply plugin: 'application'
+mainClassName = 'employee.EmployeeApp'
+
+java {
+    sourceCompatibility = JavaVersion.VERSION_1_8
+    targetCompatibility = JavaVersion.VERSION_1_8
+}
+
+println 'This is executed during configuration phase'
+
+task configured {
+    println 'The project is configured'
+}
+
+task wrapper(type: Wrapper){
+    gradleVersion = '5.3.1'
+}
+
+repositories {
+    jcenter()
+}
+
+dependencies {
+
+    compile group: 'org.apache.commons', name: 'commons-lang3', version: '3.10'
+    testImplementation('junit:junit:4.13')
+    testRuntime('junit:junit:4.13')
+}
+test {
+    useJUnit()
+}
+

gradle/gradle-employee-app/src/main/java/employee/Employee.java

@@ -0,0 +1,9 @@
+package employee;
+
+public class Employee {
+
+    String name;
+    String emailAddress;
+    int yearOfBirth;
+
+}

gradle/gradle-employee-app/src/main/java/employee/EmployeeApp.java

@@ -0,0 +1,16 @@
+package employee;
+
+public class EmployeeApp {
+
+    public static void main(String[] args){
+
+        Employee employee = new Employee();
+        employee.name = "John";
+        employee.emailAddress = "john@baeldung.com";
+        employee.yearOfBirth = 1978;
+        System.out.println("Name: " + employee.name);
+        System.out.println("Email Address: " + employee.emailAddress);
+        System.out.println("Year Of Birth:" + employee.yearOfBirth);
+    }
+
+}

gradle/gradle-employee-app/src/test/java/employee/EmployeeAppTest.java

@@ -0,0 +1,31 @@
+package employee;
+
+import employee.Employee;
+import org.junit.*;
+import static org.junit.Assert.*;
+
+public class EmployeeAppTest {
+
+    @Test
+    public void testData(){
+
+          Employee testEmp = this.getEmployeeTest();
+
+              assertEquals(testEmp.name, "John");
+              assertEquals(testEmp.emailAddress, "john@baeldung.com");
+              assertEquals(testEmp.yearOfBirth, 1978);
+
+
+    }
+
+    private Employee getEmployeeTest(){
+
+        Employee employee = new Employee();
+        employee.name = "John";
+        employee.emailAddress = "john@baeldung.com";
+        employee.yearOfBirth = 1978;
+
+        return employee;
+    }
+
+}

gradle/settings.gradle

@@ -1,10 +1,10 @@
 rootProject.name = 'gradletutorial'
 
-
 include 'greeting-library'
 include 'greeting-library-java'
 include 'greeter'
 include 'gradletaskdemo'
 include 'junit5'
+include 'gradle-employee-app'
 
 println 'This will be executed during the initialization phase.'

jee-7/pom.xml

@@ -256,10 +256,9 @@
                         </execution>
                     </executions>
                     <configuration>
-                        <wsdlDirectory>src/main/resources</wsdlDirectory>
+                        <wsdlUrls>
-                        <wsdlFiles>
+                            <wsdlUrl>http://localhost:8888/ws/country?wsdl</wsdlUrl>
-                            <wsdlFile>country.wsdl</wsdlFile> 
+                        </wsdlUrls>
-                        </wsdlFiles>
                         <keep>true</keep> 
                         <packageName>com.baeldung.soap.ws.client.generated</packageName> 
                         <sourceDestDir>src/main/java</sourceDestDir>

jee-7/src/main/java/com/baeldung/soap/ws/client/generated/CountryServiceImplService.java

@@ -12,11 +12,11 @@ import javax.xml.ws.WebServiceFeature;
 
 /**
  * This class was generated by the JAX-WS RI.
- * JAX-WS RI 2.3.2
+ * JAX-WS RI 2.2.9-b130926.1035
  * Generated source version: 2.2
  * 
  */
-@WebServiceClient(name = "CountryServiceImplService", targetNamespace = "http://server.ws.soap.baeldung.com/", wsdlLocation = "file:src/main/resources/country.wsdl")
+@WebServiceClient(name = "CountryServiceImplService", targetNamespace = "http://server.ws.soap.baeldung.com/", wsdlLocation = "http://localhost:8888/ws/country?wsdl")
 public class CountryServiceImplService extends Service {
 
     private final static URL COUNTRYSERVICEIMPLSERVICE_WSDL_LOCATION;
@@ -27,7 +27,7 @@ public class CountryServiceImplService extends Service {
         URL url = null;
         WebServiceException e = null;
         try {
-            url = new URL("file:src/main/resources/country.wsdl");
+            url = new URL("http://localhost:8888/ws/country?wsdl");
         } catch (MalformedURLException ex) {
             e = new WebServiceException(ex);
         }

jee-7/src/main/resources/country.wsdl

@@ -1,40 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?><!-- Published by JAX-WS RI (http://jax-ws.java.net). RI's version is JAX-WS RI 2.2.9-b130926.1035 svn-revision#5f6196f2b90e9460065a4c2f4e30e065b245e51e. --><!-- Generated by JAX-WS RI (http://jax-ws.java.net). RI's version is JAX-WS RI 2.2.9-b130926.1035 svn-revision#5f6196f2b90e9460065a4c2f4e30e065b245e51e. -->
-<definitions xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd" xmlns:wsp="http://www.w3.org/ns/ws-policy"
-    xmlns:wsp1_2="http://schemas.xmlsoap.org/ws/2004/09/policy" xmlns:wsam="http://www.w3.org/2007/05/addressing/metadata" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
-    xmlns:tns="http://server.ws.soap.baeldung.com/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://schemas.xmlsoap.org/wsdl/"
-    targetNamespace="http://server.ws.soap.baeldung.com/" name="CountryServiceImplService">
-    <types>
-        <xsd:schema>
-            <xsd:import namespace="http://server.ws.soap.baeldung.com/" schemaLocation="http://localhost:8888/ws/country?xsd=1"></xsd:import>
-        </xsd:schema>
-    </types>
-    <message name="findByName">
-        <part name="arg0" type="xsd:string"></part>
-    </message>
-    <message name="findByNameResponse">
-        <part name="return" type="tns:country"></part>
-    </message>
-    <portType name="CountryService">
-        <operation name="findByName">
-            <input wsam:Action="http://server.ws.soap.baeldung.com/CountryService/findByNameRequest" message="tns:findByName"></input>
-            <output wsam:Action="http://server.ws.soap.baeldung.com/CountryService/findByNameResponse" message="tns:findByNameResponse"></output>
-        </operation>
-    </portType>
-    <binding name="CountryServiceImplPortBinding" type="tns:CountryService">
-        <soap:binding transport="http://schemas.xmlsoap.org/soap/http" style="rpc"></soap:binding>
-        <operation name="findByName">
-            <soap:operation soapAction=""></soap:operation>
-            <input>
-                <soap:body use="literal" namespace="http://server.ws.soap.baeldung.com/"></soap:body>
-            </input>
-            <output>
-                <soap:body use="literal" namespace="http://server.ws.soap.baeldung.com/"></soap:body>
-            </output>
-        </operation>
-    </binding>
-    <service name="CountryServiceImplService">
-        <port name="CountryServiceImplPort" binding="tns:CountryServiceImplPortBinding">
-            <soap:address location="http://localhost:8888/ws/country"></soap:address>
-        </port>
-    </service>
-</definitions>

jee-7/src/test/java/com/baeldung/batch/understanding/CustomCheckPointUnitTest.java

@@ -1,20 +1,17 @@
 package com.baeldung.batch.understanding;
 
-import static org.junit.jupiter.api.Assertions.*;
+import static org.junit.jupiter.api.Assertions.assertEquals;
-import java.util.Map;
+
 import java.util.Properties;
+
 import javax.batch.operations.JobOperator;
 import javax.batch.runtime.BatchRuntime;
 import javax.batch.runtime.BatchStatus;
 import javax.batch.runtime.JobExecution;
-import javax.batch.runtime.Metric;
 import javax.batch.runtime.StepExecution;
-import com.baeldung.batch.understanding.BatchTestHelper;
 
 import org.junit.jupiter.api.Test;
-import org.junit.jupiter.api.Disabled;
 
-@Disabled("Should be fixed in BAEL-3812")
 class CustomCheckPointUnitTest {
     @Test
     public void givenChunk_whenCustomCheckPoint_thenCommitCountIsThree() throws Exception {

jee-7/src/test/java/com/baeldung/batch/understanding/JobSequenceUnitTest.java

@@ -1,6 +1,8 @@
 package com.baeldung.batch.understanding;
 
-import static org.junit.jupiter.api.Assertions.*;
+import static org.junit.jupiter.api.Assertions.assertArrayEquals;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -13,9 +15,7 @@ import javax.batch.runtime.JobExecution;
 import javax.batch.runtime.StepExecution;
 
 import org.junit.jupiter.api.Test;
-import org.junit.jupiter.api.Disabled;
 
-@Disabled("Should be fixed in BAEL-3812")
 class JobSequenceUnitTest {
     @Test
     public void givenTwoSteps_thenBatch_CompleteWithSuccess() throws Exception {

jee-7/src/test/java/com/baeldung/batch/understanding/SimpleBatchLetUnitTest.java

@@ -1,17 +1,16 @@
 package com.baeldung.batch.understanding;
 
-import org.junit.jupiter.api.Disabled;
+import static org.junit.jupiter.api.Assertions.assertEquals;
-import org.junit.jupiter.api.Test;
+
+import java.util.Properties;
 
 import javax.batch.operations.JobOperator;
 import javax.batch.runtime.BatchRuntime;
 import javax.batch.runtime.BatchStatus;
 import javax.batch.runtime.JobExecution;
-import java.util.Properties;
 
-import static org.junit.jupiter.api.Assertions.assertEquals;
+import org.junit.jupiter.api.Test;
 
-@Disabled("Should be fixed in BAEL-3812")
 class SimpleBatchLetUnitTest {
     @Test
     public void givenBatchLet_thenBatch_CompleteWithSuccess() throws Exception {

jee-7/src/test/java/com/baeldung/batch/understanding/SimpleChunkUnitTest.java

@@ -1,6 +1,7 @@
 package com.baeldung.batch.understanding;
 
-import static org.junit.jupiter.api.Assertions.*;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
 import java.util.List;
 import java.util.Map;
@@ -14,9 +15,7 @@ import javax.batch.runtime.Metric;
 import javax.batch.runtime.StepExecution;
 
 import org.junit.jupiter.api.Test;
-import org.junit.jupiter.api.Disabled;
 
-@Disabled("Should be fixed in BAEL-3812")
 class SimpleChunkUnitTest {
     @Test
     public void givenChunk_thenBatch_CompletesWithSucess() throws Exception {

jee-7/src/test/java/com/baeldung/batch/understanding/SimpleErrorChunkUnitTest.java

@@ -1,19 +1,18 @@
 package com.baeldung.batch.understanding;
 
-import org.junit.jupiter.api.Disabled;
+import static org.junit.Assert.assertEquals;
-import org.junit.jupiter.api.Test;
+
+import java.util.List;
+import java.util.Properties;
 
 import javax.batch.operations.JobOperator;
 import javax.batch.runtime.BatchRuntime;
 import javax.batch.runtime.BatchStatus;
 import javax.batch.runtime.JobExecution;
 import javax.batch.runtime.StepExecution;
-import java.util.List;
-import java.util.Properties;
 
-import static org.junit.Assert.assertEquals;
+import org.junit.jupiter.api.Test;
 
-@Disabled("Should be fixed in BAEL-3812")
 class SimpleErrorChunkUnitTest {
 
     @Test

jee-7/src/test/resources/jberet.properties

@@ -0,0 +1 @@
+db-url=jdbc:h2:mem:jberet-repo;DB_CLOSE_DELAY=-1

jhipster/jhipster-uaa/gateway/pom.xml

@@ -1013,7 +1013,7 @@
 	
     <properties>
         <lifecycle.mapping.version>1.0.0</lifecycle.mapping.version>
-        <spring.web.version>0.24.0-RC.0</spring.web.version>
+        <spring.web.version>0.24.0</spring.web.version>
         <!-- Build properties -->
         <maven.version>3.0.0</maven.version>
         <java.version>1.8</java.version>

jhipster/jhipster-uaa/quotes/pom.xml

@@ -910,6 +910,6 @@
         <sonar.tests>${project.basedir}/src/test/</sonar.tests>
 
         <!-- jhipster-needle-maven-property -->
-        <zalando.version>0.24.0-RC.0</zalando.version>
+        <zalando.version>0.24.0</zalando.version>
     </properties>	
 </project>

jhipster/jhipster-uaa/uaa/pom.xml

@@ -835,7 +835,7 @@
 	
     <properties>
         <lifecycle.mapping.version>1.0.0</lifecycle.mapping.version>
-        <spring.web.version>0.24.0-RC.0</spring.web.version>
+        <spring.web.version>0.24.0</spring.web.version>
         <!-- Build properties -->
         <maven.version>3.0.0</maven.version>
         <java.version>1.8</java.version>

kaniko/dockerfile

@@ -0,0 +1,2 @@
+FROM ubuntu 
+ENTRYPOINT ["/bin/bash", "-c", "echo hello"]

kaniko/pod.yaml

@@ -0,0 +1,19 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: kaniko
+spec:
+  containers:
+  - name: kaniko
+    image: gcr.io/kaniko-project/executor:latest
+    args: ["--dockerfile=/workspace/dockerfile",
+            "--context=dir://workspace",
+            "--no-push"] 
+    volumeMounts:
+      - name: dockerfile-storage
+        mountPath: /workspace
+  restartPolicy: Never
+  volumes:
+    - name: dockerfile-storage
+      persistentVolumeClaim:
+        claimName: dockerfile-claim

kaniko/volume-claim.yaml

@@ -0,0 +1,11 @@
+kind: PersistentVolumeClaim
+apiVersion: v1
+metadata:
+  name: dockerfile-claim
+spec:
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 8Gi
+  storageClassName: local-storage

kaniko/volume.yaml

@@ -0,0 +1,14 @@
+apiVersion: v1
+kind: PersistentVolume
+metadata:
+  name: dockerfile
+  labels:
+    type: local
+spec:
+  capacity:
+    storage: 10Gi
+  accessModes:
+    - ReadWriteOnce
+  storageClassName: local-storage
+  hostPath:
+    path: /home/docker/kaniko # Path to the local mount directory that was setup

libraries-data-2/pom.xml

@@ -128,6 +128,21 @@
             <version>${awaitility.version}</version>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>org.rosuda.REngine</groupId>
+            <artifactId>Rserve</artifactId>
+            <version>${rserve.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.github.jbytecode</groupId>
+            <artifactId>RCaller</artifactId>
+            <version>${rcaller.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.renjin</groupId>
+            <artifactId>renjin-script-engine</artifactId>
+            <version>${renjin.version}</version>
+        </dependency>
     </dependencies>
 
     <repositories>
@@ -137,6 +152,13 @@
             <url>http://repo.numericalmethod.com/maven/</url>
             <layout>default</layout>
         </repository>
+        
+        <!-- Needed for Renjin -->
+        <repository>
+            <id>bedatadriven</id>
+            <name>bedatadriven public repo</name>
+            <url>https://nexus.bedatadriven.com/content/groups/public/</url>
+        </repository>
     </repositories>
 
     <properties>
@@ -153,6 +175,27 @@
         <assertj.version>3.6.2</assertj.version>
         <slf4j.version>1.7.25</slf4j.version>
         <awaitility.version>3.0.0</awaitility.version>
+        <renjin.version>RELEASE</renjin.version>
+        <rcaller.version>3.0</rcaller.version>
+        <rserve.version>1.8.1</rserve.version>
     </properties>
 
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <!-- Excludes FastR classes from compilations since they require GraalVM -->
+                    <excludes>
+                        <exclude>com/baeldung/r/FastRMean.java</exclude>
+                    </excludes>
+                    <testExcludes>
+                        <exclude>com/baeldung/r/FastRMeanUnitTest.java</exclude>						
+                    </testExcludes>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
 </project>

libraries-data-2/src/main/java/com/baeldung/r/FastRMean.java

@@ -0,0 +1,33 @@
+package com.baeldung.r;
+
+import java.io.IOException;
+import java.net.URISyntaxException;
+
+/**
+ * FastR showcase.
+ * 
+ * @author Donato Rimenti
+ */
+public class FastRMean {
+
+    /**
+     * Invokes the customMean R function passing the given values as arguments.
+     * 
+     * @param values the input to the mean script
+     * @return the result of the R script
+     */
+    public double mean(int[] values) {
+        Context polyglot = Context.newBuilder()
+            .allowAllAccess(true)
+            .build();
+        String meanScriptContent = RUtils.getMeanScriptContent();
+        polyglot.eval("R", meanScriptContent);
+        Value rBindings = polyglot.getBindings("R");
+        Value rInput = rBindings.getMember("c")
+            .execute(values);
+        return rBindings.getMember("customMean")
+            .execute(rInput)
+            .asDouble();
+    }
+
+}

libraries-data-2/src/main/java/com/baeldung/r/RCallerMean.java

@@ -0,0 +1,37 @@
+package com.baeldung.r;
+
+import java.io.IOException;
+import java.net.URISyntaxException;
+
+import com.github.rcaller.rstuff.RCaller;
+import com.github.rcaller.rstuff.RCallerOptions;
+import com.github.rcaller.rstuff.RCode;
+
+/**
+ * RCaller showcase.
+ * 
+ * @author Donato Rimenti
+ */
+public class RCallerMean {
+
+    /**
+     * Invokes the customMean R function passing the given values as arguments.
+     * 
+     * @param values the input to the mean script
+     * @return the result of the R script
+     * @throws IOException        if any error occurs
+     * @throws URISyntaxException if any error occurs
+     */
+    public double mean(int[] values) throws IOException, URISyntaxException {
+        String fileContent = RUtils.getMeanScriptContent();
+        RCode code = RCode.create();
+        code.addRCode(fileContent);
+        code.addIntArray("input", values);
+        code.addRCode("result <- customMean(input)");
+        RCaller caller = RCaller.create(code, RCallerOptions.create());
+        caller.runAndReturnResult("result");
+        return caller.getParser()
+            .getAsDoubleArray("result")[0];
+    }
+
+}

libraries-data-2/src/main/java/com/baeldung/r/RUtils.java

@@ -0,0 +1,33 @@
+package com.baeldung.r;
+
+import java.io.IOException;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.stream.Collectors;
+
+/**
+ * Utility class for loading the script.R content.
+ * 
+ * @author Donato Rimenti
+ */
+public class RUtils {
+
+    /**
+     * Loads the script.R and returns its content as a string.
+     * 
+     * @return the script.R content as a string
+     * @throws IOException        if any error occurs
+     * @throws URISyntaxException if any error occurs
+     */
+    static String getMeanScriptContent() throws IOException, URISyntaxException {
+        URI rScriptUri = RUtils.class.getClassLoader()
+            .getResource("script.R")
+            .toURI();
+        Path inputScript = Paths.get(rScriptUri);
+        return Files.lines(inputScript)
+            .collect(Collectors.joining());
+    }
+}

libraries-data-2/src/main/java/com/baeldung/r/RenjinMean.java

@@ -0,0 +1,36 @@
+package com.baeldung.r;
+
+import java.io.IOException;
+import java.net.URISyntaxException;
+
+import javax.script.ScriptException;
+
+import org.renjin.script.RenjinScriptEngine;
+import org.renjin.sexp.DoubleArrayVector;
+
+/**
+ * Renjin showcase.
+ * 
+ * @author Donato Rimenti
+ */
+public class RenjinMean {
+
+    /**
+     * Invokes the customMean R function passing the given values as arguments.
+     * 
+     * @param values the input to the mean script
+     * @return the result of the R script
+     * @throws IOException        if any error occurs
+     * @throws URISyntaxException if any error occurs
+     * @throws ScriptException    if any error occurs
+     */
+    public double mean(int[] values) throws IOException, URISyntaxException, ScriptException {
+        RenjinScriptEngine engine = new RenjinScriptEngine();
+        String meanScriptContent = RUtils.getMeanScriptContent();
+        engine.put("input", values);
+        engine.eval(meanScriptContent);
+        DoubleArrayVector result = (DoubleArrayVector) engine.eval("customMean(input)");
+        return result.asReal();
+    }
+
+}

libraries-data-2/src/main/java/com/baeldung/r/RserveMean.java

@@ -0,0 +1,30 @@
+package com.baeldung.r;
+
+import org.rosuda.REngine.REXPMismatchException;
+import org.rosuda.REngine.REngineException;
+import org.rosuda.REngine.Rserve.RConnection;
+
+/**
+ * Rserve showcase.
+ * 
+ * @author Donato Rimenti
+ */
+public class RserveMean {
+
+    /**
+     * Connects to the Rserve istance listening on 127.0.0.1:6311 and invokes the
+     * customMean R function passing the given values as arguments.
+     * 
+     * @param values the input to the mean script
+     * @return the result of the R script
+     * @throws REngineException      if any error occurs
+     * @throws REXPMismatchException if any error occurs
+     */
+    public double mean(int[] values) throws REngineException, REXPMismatchException {
+        RConnection c = new RConnection();
+        c.assign("input", values);
+        return c.eval("customMean(input)")
+            .asDouble();
+    }
+
+}

libraries-data-2/src/test/java/com/baeldung/r/FastRMeanUnitTest.java

@@ -0,0 +1,29 @@
+package com.baeldung.r;
+
+import org.junit.Assert;
+import org.junit.Ignore;
+import org.junit.Test;
+
+/**
+ * Test for {@link FastRMean}.
+ * 
+ * @author Donato Rimenti
+ */
+@Ignore
+public class FastRMeanUnitTest {
+
+    /**
+     * Object to test.
+     */
+    private FastRMean fastrMean = new FastRMean();
+
+    /**
+     * Test for {@link FastRMeanUnitTest#mean(int[])}.
+     */
+    @Test
+    public void givenValues_whenMean_thenCorrect() {
+        int[] input = { 1, 2, 3, 4, 5 };
+        double result = fastrMean.mean(input);
+        Assert.assertEquals(3.0, result, 0.000001);
+    }
+}

libraries-data-2/src/test/java/com/baeldung/r/RCallerMeanIntegrationTest.java

@@ -0,0 +1,37 @@
+package com.baeldung.r;
+
+import java.io.IOException;
+import java.net.URISyntaxException;
+
+import javax.script.ScriptException;
+
+import org.junit.Assert;
+import org.junit.Ignore;
+import org.junit.Test;
+
+/**
+ * Test for {@link RCallerMean}.
+ * 
+ * @author Donato Rimenti
+ */
+@Ignore
+public class RCallerMeanIntegrationTest {
+
+    /**
+     * Object to test.
+     */
+    private RCallerMean rcallerMean = new RCallerMean();
+
+    /**
+     * Test for {@link RCallerMeanIntegrationTest#mean(int[])}.
+     * 
+     * @throws ScriptException    if an error occurs
+     * @throws URISyntaxException if an error occurs
+     */
+    @Test
+    public void givenValues_whenMean_thenCorrect() throws IOException, URISyntaxException {
+        int[] input = { 1, 2, 3, 4, 5 };
+        double result = rcallerMean.mean(input);
+        Assert.assertEquals(3.0, result, 0.000001);
+    }
+}

libraries-data-2/src/test/java/com/baeldung/r/RenjinMeanUnitTest.java

@@ -0,0 +1,37 @@
+package com.baeldung.r;
+
+import java.io.IOException;
+import java.net.URISyntaxException;
+
+import javax.script.ScriptException;
+
+import org.junit.Test;
+
+import org.junit.Assert;
+
+/**
+ * Test for {@link RenjinMean}.
+ * 
+ * @author Donato Rimenti
+ */
+public class RenjinMeanUnitTest {
+
+    /**
+     * Object to test.
+     */
+    private RenjinMean renjinMean = new RenjinMean();
+
+    /**
+    * Test for {@link RenjinMeanUnitTest#mean(int[])}.
+    * 
+    * @throws ScriptException    if an error occurs
+    * @throws URISyntaxException if an error occurs
+    * @throws IOException        if an error occurs
+    */
+    @Test
+    public void givenValues_whenMean_thenCorrect() throws IOException, URISyntaxException, ScriptException {
+        int[] input = { 1, 2, 3, 4, 5 };
+        double result = renjinMean.mean(input);
+        Assert.assertEquals(3.0, result, 0.000001);
+    }
+}

libraries-data-2/src/test/java/com/baeldung/r/RserveMeanIntegrationTest.java

@@ -0,0 +1,34 @@
+package com.baeldung.r;
+
+import org.junit.Assert;
+import org.junit.Ignore;
+import org.junit.Test;
+import org.rosuda.REngine.REXPMismatchException;
+import org.rosuda.REngine.REngineException;
+
+/**
+ * Test for {@link RserveMean}.
+ * 
+ * @author Donato Rimenti
+ */
+@Ignore
+public class RserveMeanIntegrationTest {
+
+    /**
+     * Object to test.
+     */
+    private RserveMean rserveMean = new RserveMean();
+
+    /**
+     * Test for {@link RserveMeanIntegrationTest#mean(int[])}.
+     * 
+     * @throws REXPMismatchException if an error occurs
+     * @throws REngineException      if an error occurs
+     */
+    @Test
+    public void givenValues_whenMean_thenCorrect() throws REngineException, REXPMismatchException {
+        int[] input = { 1, 2, 3, 4, 5 };
+        double result = rserveMean.mean(input);
+        Assert.assertEquals(3.0, result, 0.000001);
+    }
+}

libraries-data-2/src/test/resources/script.R

@@ -0,0 +1,3 @@
+customMean <- function(vector) {
+	mean(vector)
+}

maven-java-11/README.md

@@ -1,6 +0,0 @@
-## Maven and Java 11
-
-This module contains articles about Maven with Java 11+.
-
-### Relevant Articles: 
-

maven-java-11/multimodule-maven-project/daomodule/pom.xml

@@ -1,17 +0,0 @@
-<?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>
-    <groupId>com.baeldung.daomodule</groupId>
-    <artifactId>daomodule</artifactId>
-    <version>1.0</version>
-    <name>daomodule</name>
-    <packaging>jar</packaging>
-
-    <parent>
-        <groupId>com.baeldung.multimodule-maven-project</groupId>
-        <artifactId>multimodule-maven-project</artifactId>
-        <version>1.0</version>
-    </parent>
-
-</project>

maven-java-11/multimodule-maven-project/daomodule/src/main/java/com/baeldung/dao/Dao.java

@@ -1,12 +0,0 @@
-package com.baeldung.dao;
-
-import java.util.List;
-import java.util.Optional;
-
-public interface Dao<T> {
-
-    Optional<T> findById(int id);
-
-    List<T> findAll();
-
-}

maven-java-11/multimodule-maven-project/daomodule/src/main/java/module-info.java

@@ -1,3 +0,0 @@
-module com.baeldung.dao {
-    exports com.baeldung.dao;
-}

maven-java-11/multimodule-maven-project/entitiymodule/pom.xml

@@ -1,22 +0,0 @@
-<?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>
-    <groupId>com.baeldung.entitymodule</groupId>
-    <artifactId>entitymodule</artifactId>
-    <version>1.0</version>
-    <name>entitymodule</name>
-    <packaging>jar</packaging>
-
-    <parent>
-        <groupId>com.baeldung.multimodule-maven-project</groupId>
-        <artifactId>multimodule-maven-project</artifactId>
-        <version>1.0</version>
-    </parent>
-
-    <properties>
-        <maven.compiler.source>11</maven.compiler.source>
-        <maven.compiler.target>11</maven.compiler.target>
-    </properties>
-
-</project>

maven-java-11/multimodule-maven-project/entitiymodule/src/main/java/com/baeldung/entity/User.java

@@ -1,19 +0,0 @@
-package com.baeldung.entity;
-
-public class User {
-
-    private final String name;
-
-    public User(String name) {
-        this.name = name;
-    }
-
-    public String getName() {
-        return name;
-    }
-
-    @Override
-    public String toString() {
-        return "User{" + "name=" + name + '}';
-    }
-}

maven-java-11/multimodule-maven-project/entitiymodule/src/main/java/module-info.java

@@ -1,3 +0,0 @@
-module com.baeldung.entity {
-    exports com.baeldung.entity;
-}

maven-java-11/multimodule-maven-project/mainppmodule/pom.xml

@@ -1,38 +0,0 @@
-<?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>
-    <groupId>com.baeldung.mainappmodule</groupId>
-    <artifactId>mainappmodule</artifactId>
-    <version>1.0</version>
-    <name>mainappmodule</name>
-    <packaging>jar</packaging>
-
-    <parent>
-        <groupId>com.baeldung.multimodule-maven-project</groupId>
-        <artifactId>multimodule-maven-project</artifactId>
-        <version>1.0</version>
-        <entitymodule.version>1.0</entitymodule.version>
-        <daomodule.version>1.0</daomodule.version>
-        <userdaomodule.version>1.0</userdaomodule.version>
-    </parent>
-
-    <dependencies>
-        <dependency>
-            <groupId>com.baeldung.entitymodule</groupId>
-            <artifactId>entitymodule</artifactId>
-            <version>${entitymodule.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>com.baeldung.daomodule</groupId>
-            <artifactId>daomodule</artifactId>
-            <version>${daomodule.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>com.baeldung.userdaomodule</groupId>
-            <artifactId>userdaomodule</artifactId>
-            <version>${userdaomodule.version}</version>
-        </dependency>
-    </dependencies>
-
-</project>

maven-java-11/multimodule-maven-project/mainppmodule/src/main/java/com/baeldung/mainapp/Application.java

@@ -1,19 +0,0 @@
-package com.baeldung.mainapp;
-
-import com.baeldung.dao.Dao;
-import com.baeldung.entity.User;
-import com.baeldung.userdao.UserDao;
-import java.util.HashMap;
-import java.util.Map;
-
-public class Application {
-    
-    public static void main(String[] args) {
-        Map<Integer, User> users = new HashMap<>();
-        users.put(1, new User("Julie"));
-        users.put(2, new User("David"));
-        Dao userDao = new UserDao(users);
-        userDao.findAll().forEach(System.out::println);
-    }
-    
-}

maven-java-11/multimodule-maven-project/mainppmodule/src/main/java/module-info.java

@@ -1,6 +0,0 @@
-module com.baeldung.mainapp {
-    requires com.baeldung.entity;
-    requires com.baeldung.userdao;
-    requires com.baeldung.dao;
-    uses com.baeldung.dao.Dao;
-}

maven-java-11/multimodule-maven-project/pom.xml

@@ -1,66 +0,0 @@
-<?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>
-    <groupId>com.baeldung.multimodule-maven-project</groupId>
-    <artifactId>multimodule-maven-project</artifactId>
-    <version>1.0</version>
-    <name>multimodule-maven-project</name>
-    <packaging>pom</packaging>
-
-    <parent>
-        <groupId>com.baeldung.maven-java-11</groupId>
-        <artifactId>maven-java-11</artifactId>
-        <version>1.0</version>
-    </parent>
-
-    <modules>
-        <module>entitymodule</module>
-        <module>daomodule</module>
-        <module>userdaomodule</module>
-        <module>mainappmodule</module>
-    </modules>
-
-    <dependencyManagement>
-        <dependencies>
-            <dependency>
-                <groupId>junit</groupId>
-                <artifactId>junit</artifactId>
-                <version>${junit.version}</version>
-                <scope>test</scope>
-            </dependency>
-            <dependency>
-                <groupId>org.assertj</groupId>
-                <artifactId>assertj-core</artifactId>
-                <version>${assertj.version}</version>
-                <scope>test</scope>
-            </dependency>
-        </dependencies>
-    </dependencyManagement>
-
-    <build>
-        <pluginManagement>
-            <plugins>
-                <plugin>
-                    <groupId>org.apache.maven.plugins</groupId>
-                    <artifactId>maven-compiler-plugin</artifactId>
-                    <version>${compiler.plugin.version}</version>
-                    <configuration>
-                        <source>${source.version}</source>
-                        <target>${target.version}</target>
-                    </configuration>
-                </plugin>
-            </plugins>
-        </pluginManagement>
-    </build>
-
-    <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <junit.version>4.12</junit.version>
-        <assertj.version>3.12.2</assertj.version>
-        <compiler.plugin.version>3.8.0</compiler.plugin.version>
-        <source.version>11</source.version>
-        <target.version>11</target.version>
-    </properties>
-
-</project>

maven-java-11/multimodule-maven-project/userdaomodule/pom.xml

@@ -1,42 +0,0 @@
-<?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>
-    <groupId>com.baeldung.userdaomodule</groupId>
-    <artifactId>userdaomodule</artifactId>
-    <version>1.0</version>
-    <name>userdaomodule</name>
-    <packaging>jar</packaging>
-
-    <parent>
-        <groupId>com.baeldung.multimodule-maven-project</groupId>
-        <artifactId>multimodule-maven-project</artifactId>
-        <version>1.0</version>
-    </parent>
-
-    <dependencies>
-        <dependency>
-            <groupId>com.baeldung.entitymodule</groupId>
-            <artifactId>entitymodule</artifactId>
-            <version>${entitymodule.version}1.0</version>
-        </dependency>
-        <dependency>
-            <groupId>com.baeldung.daomodule</groupId>
-            <artifactId>daomodule</artifactId>
-            <version>${daomodule.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>junit</groupId>
-            <artifactId>junit</artifactId>
-            <scope>test</scope>
-        </dependency>
-    </dependencies>
-
-    <properties>
-        <entitymodule.version>1.0</entitymodule.version>
-        <daomodule.version>1.0</daomodule.version>
-    </properties>
-
-</project>

maven-java-11/multimodule-maven-project/userdaomodule/src/main/java/com/baeldung/userdao/UserDao.java

@@ -1,32 +0,0 @@
-package com.baeldung.userdao;
-
-import com.baeldung.dao.Dao;
-import com.baeldung.entity.User;
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-import java.util.Optional;
-
-public class UserDao implements Dao<User> {
-
-    private final Map<Integer, User> users;
-
-    public UserDao() {
-        users = new HashMap<>();
-    }
-
-    public UserDao(Map<Integer, User> users) {
-        this.users = users;
-    }
-
-    @Override
-    public List<User> findAll() {
-        return new ArrayList<>(users.values());
-    }
-
-    @Override
-    public Optional<User> findById(int id) {
-        return Optional.ofNullable(users.get(id));
-    }
-}

maven-java-11/multimodule-maven-project/userdaomodule/src/main/java/module-info.java

@@ -1,6 +0,0 @@
-module com.baeldung.userdao {
-    requires com.baeldung.entity;
-    requires com.baeldung.dao;
-    provides com.baeldung.dao.Dao with com.baeldung.userdao.UserDao;
-    exports com.baeldung.userdao;
-}

maven-java-11/multimodule-maven-project/userdaomodule/src/test/java/com/baeldung/userdao/test/UserDaoUnitTest.java

@@ -1,36 +0,0 @@
-package com.baeldung.userdao.test;
-
-import com.baeldung.dao.Dao;
-import com.baeldung.entity.User;
-import com.baeldung.userdao.UserDao;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-import java.util.Optional;
-import static org.junit.Assert.*;
-import static org.hamcrest.CoreMatchers.*;
-import org.junit.Before;
-import org.junit.Test;
-
-public class UserDaoUnitTest {
-    
-    private Dao userDao;
-    
-    @Before
-    public void setUpUserDaoInstance() {
-        Map<Integer, User> users = new HashMap<>();
-        users.put(1, new User("Julie"));
-        users.put(2, new User("David"));
-        userDao = new UserDao(users);
-    }
-    
-    @Test
-    public void givenUserDaoIntance_whenCalledFindById_thenCorrect() {
-       assertThat(userDao.findById(1), isA(Optional.class));
-    } 
-    
-    @Test
-    public void givenUserDaoIntance_whenCalledFindAll_thenCorrect() {
-       assertThat(userDao.findAll(), isA(List.class));
-    } 
-}

maven-java-11/pom.xml

@@ -1,27 +0,0 @@
-<?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>
-    <groupId>com.baeldung.maven-java-11</groupId>
-    <artifactId>maven-java-11</artifactId>
-    <version>1.0</version>
-    <name>maven-java-11</name>
-    <packaging>pom</packaging>
-
-    <parent>
-        <groupId>com.baeldung</groupId>
-        <artifactId>parent-modules</artifactId>
-        <version>1.0.0-SNAPSHOT</version>
-    </parent>
-
-    <modules>
-        <module>multimodule-maven-project</module>
-    </modules>
-
-    <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <maven.compiler.source>11</maven.compiler.source>
-        <maven.compiler.target>11</maven.compiler.target>
-    </properties>
-
-</project>

patterns/solid/src/main/java/com/baeldung/s/TextManipulator.java

@@ -0,0 +1,35 @@
+package com.baeldung.s;
+
+public class TextManipulator {
+    private String text;
+
+    public TextManipulator(String text) {
+        this.text = text;
+    }
+
+    public String getText() {
+        return text;
+    }
+
+    public void appendText(String newText) {
+        text = text.concat(newText);
+    }
+
+    public void findWordAndReplace(String word, String replacementWord) {
+        if (text.contains(word)) {
+            text = text.replace(word, replacementWord);
+        } else System.out.println("Word you want to replace is not found in the text");
+    }
+
+    public void findWordAndDelete(String word) {
+        if (text.contains(word)) {
+            text = text.replace(word, "");
+        } else System.out.println("Word you want to delete is not found in the text");
+    }
+
+ /*
+  * Bad practice when implementing SRP principle, not in the scope of this class
+    public void printText() {
+        System.out.println(textManipulator.getText());
+    }*/
+}

patterns/solid/src/main/java/com/baeldung/s/TextPrinter.java

@@ -0,0 +1,23 @@
+package com.baeldung.s;
+
+import java.util.Arrays;
+
+public class TextPrinter {
+    TextManipulator textManipulator;
+
+    public TextPrinter(TextManipulator textManipulator) {
+        this.textManipulator = textManipulator;
+    }
+
+    public void printText() {
+        System.out.println(textManipulator.getText());
+    }
+
+    public void printOutEachWordOfText() {
+        System.out.println(Arrays.toString(textManipulator.getText().split(" ")));
+    }
+
+    public void printRangeOfCharacters(int startingIndex, int endIndex) {
+        System.out.println(textManipulator.getText().substring(startingIndex, endIndex));
+    }
+}

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

@@ -139,7 +139,7 @@
 
     <properties>
         <hibernate.version>5.4.14.Final</hibernate.version>
-        <eclipselink.version>2.7.4-RC1</eclipselink.version>
+        <eclipselink.version>2.7.4</eclipselink.version>
         <postgres.version>42.2.5</postgres.version>
         <javax.persistence-api.version>2.2</javax.persistence-api.version>
         <assertj.version>3.11.1</assertj.version>

persistence-modules/java-jpa/pom.xml

@@ -106,7 +106,7 @@
 
     <properties>
         <hibernate.version>5.4.0.Final</hibernate.version>
-        <eclipselink.version>2.7.4-RC1</eclipselink.version>
+        <eclipselink.version>2.7.4</eclipselink.version>
         <postgres.version>42.2.5</postgres.version>
         <javax.persistence-api.version>2.2</javax.persistence-api.version>
         <maven-processor-plugin.version>3.3.3</maven-processor-plugin.version>

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

@@ -9,9 +9,9 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>parent-boot-1</artifactId>
+        <artifactId>parent-boot-2</artifactId>
         <version>0.0.1-SNAPSHOT</version>
-        <relativePath>../../parent-boot-1</relativePath>
+        <relativePath>../../parent-boot-2</relativePath>
     </parent>
 
     <dependencyManagement>
@@ -19,7 +19,7 @@
             <dependency>
                 <groupId>org.springframework.data</groupId>
                 <artifactId>spring-data-releasetrain</artifactId>
-                <version>Hopper-SR10</version>
+                <version>Lovelace-SR16</version>
                 <type>pom</type>
                 <scope>import</scope>
             </dependency>
@@ -174,7 +174,7 @@
         <start-class>com.baeldung.Application</start-class>
         <spring.version>4.3.4.RELEASE</spring.version>
         <httpclient.version>4.5.2</httpclient.version>
-        <spring-data-dynamodb.version>4.4.1</spring-data-dynamodb.version>
+        <spring-data-dynamodb.version>5.1.0</spring-data-dynamodb.version>
         <aws-java-sdk-dynamodb.version>1.11.64</aws-java-sdk-dynamodb.version>
         <bootstrap.version>3.3.7-1</bootstrap.version>
         <sqlite4java.version>1.0.392</sqlite4java.version>

persistence-modules/spring-data-dynamodb/src/main/java/com/baeldung/spring/data/dynamodb/config/DynamoDBConfig.java

@@ -44,8 +44,8 @@ public class DynamoDBConfig {
         return new BasicAWSCredentials(amazonAWSAccessKey, amazonAWSSecretKey);
     }
 
-    @Bean(name = "mvcHandlerMappingIntrospector")
+    @Bean(name = "mvcHandlerMappingIntrospectorCustom")
-	public HandlerMappingIntrospector mvcHandlerMappingIntrospector() {
+	public HandlerMappingIntrospector mvcHandlerMappingIntrospectorCustom() {
 		return new HandlerMappingIntrospector(context);
 	}
 }

persistence-modules/spring-data-dynamodb/src/main/java/com/baeldung/spring/data/dynamodb/repositories/ProductInfoRepository.java

@@ -1,12 +1,13 @@
 package com.baeldung.spring.data.dynamodb.repositories;
 
-import com.baeldung.spring.data.dynamodb.model.ProductInfo;
+import java.util.Optional;
+
 import org.socialsignin.spring.data.dynamodb.repository.EnableScan;
 import org.springframework.data.repository.CrudRepository;
 
-import java.util.List;
+import com.baeldung.spring.data.dynamodb.model.ProductInfo;
 
 @EnableScan
 public interface ProductInfoRepository extends CrudRepository<ProductInfo, String> {
-    List<ProductInfo> findById(String id);
+    Optional<ProductInfo> findById(String id);
 }

persistence-modules/spring-data-mongodb/README.md

@@ -13,3 +13,12 @@
 - [Spring Data Annotations](http://www.baeldung.com/spring-data-annotations)
 - [Spring Data MongoDB Transactions](https://www.baeldung.com/spring-data-mongodb-transactions )
 - [ZonedDateTime with Spring Data MongoDB](https://www.baeldung.com/spring-data-mongodb-zoneddatetime)
+
+
+## Spring Data MongoDB Live Testing
+
+
+There are 3 scripts to simplify running live tests:
+1. [`live-test-setup.sh`](src/live-test/resources/live-test-setup.sh) builds a docker image with the necessary setup and runs it. The environment is ready, when the log stops - it takes approximately 30 seconds.
+2. [`live-test.sh`](src/live-test/resources/live-test.sh) runs the live tests (but no other tests).
+3. [`live-test-teardown.sh`](src/live-test/resources/live-test-teardown.sh) stops and removes the docker image.

persistence-modules/spring-data-mongodb/src/live-test/resources/Dockerfile

@@ -0,0 +1,8 @@
+FROM mongo:4.2.1
+
+COPY init-session.js /docker-entrypoint-initdb.d/
+
+EXPOSE 27017
+
+HEALTHCHECK --interval=5s --timeout=3s --start-period=10s CMD mongo db.stats()
+CMD ["mongod", "--replSet", "rs0"]

persistence-modules/spring-data-mongodb/src/live-test/resources/init-session.js

@@ -0,0 +1 @@
+rs.initiate();

persistence-modules/spring-data-mongodb/src/live-test/resources/live-test-setup.sh

@@ -0,0 +1,5 @@
+#!/bin/bash
+
+docker image build -t spring-data-mongodb:live-test .
+
+docker run -p 27017:27017 --name spring-data-mongodb-live-test spring-data-mongodb:live-test

persistence-modules/spring-data-mongodb/src/live-test/resources/live-test-teardown.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+docker stop spring-data-mongodb-live-test
+docker rm spring-data-mongodb-live-test

persistence-modules/spring-data-mongodb/src/live-test/resources/live-test.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+mvn clean compile test -P live-all -f ../../../pom.xml

persistence-modules/spring-data-mongodb/src/test/java/com/baeldung/transaction/MongoTransactionalLiveTest.java

@@ -62,24 +62,6 @@ public class MongoTransactionalLiveTest {
         }
     }
 
-    @Test(expected = MongoCommandException.class)
-    @Transactional
-    public void whenCountDuringMongoTransaction_thenException() {
-        userRepository.save(new User("John", 30));
-        userRepository.save(new User("Ringo", 35));
-        userRepository.count();
-    }
-
-    @Test
-    @Transactional
-    public void whenQueryDuringMongoTransaction_thenSuccess() {
-        userRepository.save(new User("Jane", 20));
-        userRepository.save(new User("Nick", 33));
-        List<User> users = mongoTemplate.find(new Query(), User.class);
-
-        assertTrue(users.size() > 1);
-    }
-
     // ==== Using test instead of before and after due to @transactional doesn't allow list collection
 
     @Test

pom.xml

@@ -652,6 +652,7 @@
                 <module>spring-core</module>
                 <module>spring-core-2</module>
                 <module>spring-core-3</module>
+                <module>spring-core-4</module>
                 <module>spring-cucumber</module>
 
                 <module>spring-data-rest</module>
@@ -813,6 +814,7 @@
 
                 <module>vaadin</module>
 		<module>vavr</module>
+		<module>vavr-2</module>
             </modules>
         </profile>
 
@@ -1157,6 +1159,7 @@
                 <module>spring-core</module>
                 <module>spring-core-2</module>
                 <module>spring-core-3</module>
+                <module>spring-core-4</module>
                 <module>spring-cucumber</module>
 
                 <module>spring-data-rest</module>
@@ -1311,10 +1314,41 @@
 
                 <module>vaadin</module>
 		<module>vavr</module>
+		<module>vavr-2</module>
             </modules>
 
         </profile>
         
+        <profile>
+            <id>live-all</id>
+
+            <build>
+                <plugins>
+                    <plugin>
+                        <groupId>org.apache.maven.plugins</groupId>
+                        <artifactId>maven-surefire-plugin</artifactId>
+                        <configuration>
+                            <excludes>
+                                <exclude>**/SpringContextTest.java</exclude>
+                                <exclude>**/*UnitTest.java</exclude>
+                                <exclude>**/*IntegrationTest.java</exclude>
+                                <exclude>**/*IntTest.java</exclude>
+                                <exclude>**/*LongRunningUnitTest.java</exclude>
+                                <exclude>**/*ManualTest.java</exclude>
+                                <exclude>**/*JdbcTest.java</exclude>
+                            </excludes>
+                            <includes>
+                                <include>**/*LiveTest.java</include>
+                            </includes>
+                        </configuration>
+                    </plugin>
+                    
+                </plugins>
+            </build>
+
+
+        </profile>
+
     </profiles>
 
     <reporting>

spring-boot-groovy/src/main/groovy/com/baeldung/springwithgroovy/SpringBootGroovyApplication.groovy

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

spring-boot-groovy/src/main/groovy/com/baeldung/springwithgroovy/controller/TodoController.groovy

@@ -0,0 +1,48 @@
+package com.baeldung.springwithgroovy.controller
+
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.web.bind.annotation.DeleteMapping
+import org.springframework.web.bind.annotation.GetMapping
+import org.springframework.web.bind.annotation.PathVariable
+import org.springframework.web.bind.annotation.PostMapping
+import org.springframework.web.bind.annotation.PutMapping
+import org.springframework.web.bind.annotation.RequestBody
+import org.springframework.web.bind.annotation.RequestMapping
+import org.springframework.web.bind.annotation.RequestMethod
+import org.springframework.web.bind.annotation.RestController
+
+import com.baeldung.springwithgroovy.entity.Todo
+import com.baeldung.springwithgroovy.service.TodoService
+
+@RestController
+@RequestMapping('todo')
+public class TodoController {
+
+    @Autowired
+    TodoService todoService
+
+    @GetMapping
+    List<Todo> getAllTodoList(){
+        todoService.findAll()
+    }
+
+    @PostMapping
+    Todo saveTodo(@RequestBody Todo todo){
+        todoService.saveTodo todo
+    }
+
+    @PutMapping
+    Todo updateTodo(@RequestBody Todo todo){
+        todoService.updateTodo todo
+    }
+
+    @DeleteMapping('/{todoId}')
+    deleteTodo(@PathVariable Integer todoId){
+        todoService.deleteTodo todoId
+    }
+
+    @GetMapping('/{todoId}')
+    Todo getTodoById(@PathVariable Integer todoId){
+        todoService.findById todoId
+    }
+}

spring-boot-groovy/src/main/groovy/com/baeldung/springwithgroovy/entity/Todo.groovy

@@ -0,0 +1,23 @@
+package com.baeldung.springwithgroovy.entity
+
+import javax.persistence.Column
+import javax.persistence.Entity
+import javax.persistence.GeneratedValue
+import javax.persistence.GenerationType
+import javax.persistence.Id
+import javax.persistence.Table
+
+@Entity
+@Table(name = 'todo')
+class Todo {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    Integer id
+    
+    @Column
+    String task
+    
+    @Column
+    Boolean isCompleted
+
+}

spring-boot-groovy/src/main/groovy/com/baeldung/springwithgroovy/repository/TodoRepository.groovy

@@ -0,0 +1,9 @@
+package com.baeldung.springwithgroovy.repository
+
+import org.springframework.data.jpa.repository.JpaRepository
+import org.springframework.stereotype.Repository
+
+import com.baeldung.springwithgroovy.entity.Todo
+
+@Repository
+interface TodoRepository extends JpaRepository<Todo, Integer> {}

spring-boot-groovy/src/main/groovy/com/baeldung/springwithgroovy/service/TodoService.groovy

@@ -0,0 +1,16 @@
+package com.baeldung.springwithgroovy.service
+
+import com.baeldung.springwithgroovy.entity.Todo
+
+interface TodoService {
+
+    List<Todo> findAll()
+
+    Todo findById(Integer todoId)
+
+    Todo saveTodo(Todo todo)
+
+    Todo updateTodo(Todo todo)
+
+    Todo deleteTodo(Integer todoId)
+}

spring-boot-groovy/src/main/groovy/com/baeldung/springwithgroovy/service/impl/TodoServiceImpl.groovy

@@ -0,0 +1,40 @@
+package com.baeldung.springwithgroovy.service.impl
+
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.stereotype.Service
+
+import com.baeldung.springwithgroovy.entity.Todo
+import com.baeldung.springwithgroovy.repository.TodoRepository
+import com.baeldung.springwithgroovy.service.TodoService
+
+@Service
+class TodoServiceImpl implements TodoService {
+
+    @Autowired
+    TodoRepository todoRepository
+
+    @Override
+    List<Todo> findAll() {
+        todoRepository.findAll()
+    }
+
+    @Override
+    Todo findById(Integer todoId) {
+        todoRepository.findById todoId get()
+    }
+
+    @Override
+    Todo saveTodo(Todo todo){
+        todoRepository.save todo
+    }
+
+    @Override
+    Todo updateTodo(Todo todo){
+        todoRepository.save todo
+    }
+
+    @Override
+    Todo deleteTodo(Integer todoId){
+        todoRepository.deleteById todoId
+    }
+}

spring-boot-groovy/src/test/groovy/com/baeldung/springwithgroovy/TodoAppUnitTest.groovy

@@ -0,0 +1,97 @@
+package com.baeldung.springwithgroovy
+
+import static org.junit.jupiter.api.Assertions.assertEquals
+import static org.junit.jupiter.api.Assertions.assertTrue
+
+import org.junit.BeforeClass
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.springframework.boot.test.context.SpringBootTest
+import org.springframework.http.HttpStatus
+import org.springframework.http.MediaType
+import org.springframework.test.context.event.annotation.BeforeTestClass
+import org.springframework.test.context.junit4.SpringRunner
+
+import com.baeldung.springwithgroovy.entity.Todo
+
+import io.restassured.RestAssured
+import io.restassured.response.Response
+
+class TodoAppUnitTest {
+    static API_ROOT = 'http://localhost:8081/todo'
+    static readingTodoId
+    static writingTodoId
+
+    @BeforeClass
+    static void populateDummyData() {
+        Todo readingTodo = new Todo(task: 'Reading', isCompleted: false)
+        Todo writingTodo = new Todo(task: 'Writing', isCompleted: false)
+
+        final Response readingResponse = 
+          RestAssured.given()
+            .contentType(MediaType.APPLICATION_JSON_VALUE)
+              .body(readingTodo).post(API_ROOT)
+              
+        Todo cookingTodoResponse = readingResponse.as Todo.class
+        readingTodoId = cookingTodoResponse.getId()
+
+        final Response writingResponse = 
+          RestAssured.given()
+            .contentType(MediaType.APPLICATION_JSON_VALUE)
+              .body(writingTodo).post(API_ROOT)
+              
+        Todo writingTodoResponse = writingResponse.as Todo.class
+        writingTodoId = writingTodoResponse.getId()
+    }
+
+    @Test
+    void whenGetAllTodoList_thenOk(){
+        final Response response = RestAssured.get(API_ROOT)
+        
+        assertEquals HttpStatus.OK.value(),response.getStatusCode()
+        assertTrue response.as(List.class).size() > 0
+    }
+
+    @Test
+    void whenGetTodoById_thenOk(){
+        final Response response = 
+          RestAssured.get("$API_ROOT/$readingTodoId")
+        
+        assertEquals HttpStatus.OK.value(),response.getStatusCode()
+        Todo todoResponse = response.as Todo.class
+        assertEquals readingTodoId,todoResponse.getId()
+    }
+
+    @Test
+    void whenUpdateTodoById_thenOk(){
+        Todo todo = new Todo(id:readingTodoId, isCompleted: true)
+        final Response response = 
+          RestAssured.given()
+            .contentType(MediaType.APPLICATION_JSON_VALUE)
+              .body(todo).put(API_ROOT)
+              
+        assertEquals HttpStatus.OK.value(),response.getStatusCode()
+        Todo todoResponse = response.as Todo.class
+        assertTrue todoResponse.getIsCompleted()
+    }
+
+    @Test
+    void whenDeleteTodoById_thenOk(){
+        final Response response = 
+          RestAssured.given()
+            .delete("$API_ROOT/$writingTodoId")
+        
+        assertEquals HttpStatus.OK.value(),response.getStatusCode()
+    }
+
+    @Test
+    void whenSaveTodo_thenOk(){
+        Todo todo = new Todo(task: 'Blogging', isCompleted: false)
+        final Response response = 
+          RestAssured.given()
+            .contentType(MediaType.APPLICATION_JSON_VALUE)
+              .body(todo).post(API_ROOT)
+              
+        assertEquals HttpStatus.OK.value(),response.getStatusCode()
+    }
+}

spring-boot-modules/spring-boot-custom-starter/greeter-spring-boot-autoconfigure/pom.xml

@@ -63,7 +63,7 @@
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <spring-boot.version>1.5.2.RELEASE</spring-boot.version>
+        <spring-boot.version>2.2.6.RELEASE</spring-boot.version>
         <greeter.version>0.0.1-SNAPSHOT</greeter.version>
     </properties>
 

spring-boot-modules/spring-boot-custom-starter/greeter-spring-boot-sample-app/pom.xml

@@ -8,9 +8,9 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>parent-boot-1</artifactId>
+        <artifactId>parent-boot-2</artifactId>
         <version>0.0.1-SNAPSHOT</version>
-        <relativePath>../../../parent-boot-1</relativePath>
+        <relativePath>../../../parent-boot-2</relativePath>
     </parent>
 	
     <dependencies>

spring-boot-modules/spring-boot-custom-starter/greeter-spring-boot-starter/pom.xml

@@ -51,7 +51,7 @@
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <greeter.version>0.0.1-SNAPSHOT</greeter.version>
-        <spring-boot.version>1.5.2.RELEASE</spring-boot.version>
+        <spring-boot.version>2.2.6.RELEASE</spring-boot.version>
     </properties>
 
 </project>

spring-boot-modules/spring-boot-custom-starter/greeter/pom.xml

@@ -8,9 +8,9 @@
 	
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>parent-boot-1</artifactId>
+        <artifactId>parent-boot-2</artifactId>
         <version>0.0.1-SNAPSHOT</version>
-        <relativePath>../../../parent-boot-1</relativePath>
+        <relativePath>../../../parent-boot-2</relativePath>
     </parent>
     
 </project>

spring-boot-modules/spring-boot-property-exp/property-exp-custom-config/pom.xml

@@ -24,6 +24,12 @@
             <artifactId>spring-boot-starter-test</artifactId>
             <version>${spring-boot.version}</version>
             <scope>test</scope>
+            <exclusions>
+                <exclusion>
+                    <groupId>org.junit.vintage</groupId>
+                    <artifactId>junit-vintage-engine</artifactId>
+                </exclusion>
+            </exclusions>
         </dependency>
     </dependencies>
 
@@ -72,7 +78,7 @@
     </build>
 
     <properties>
-        <spring-boot.version>1.5.10.RELEASE</spring-boot.version>
+        <spring-boot.version>2.2.6.RELEASE</spring-boot.version>
         <custom.property>Custom Property Value</custom.property>
         <apache-maven.version>2.7</apache-maven.version>
         <exec-maven-plugin.version>1.6.0</exec-maven-plugin.version>