Merge remote-tracking branch 'upstream/master' into BAEL-1657

README.md

@@ -34,3 +34,9 @@ CI - Jenkins
 ================================
 This tutorials project is being built **[>> HERE](https://rest-security.ci.cloudbees.com/job/tutorials-unit/)**
 
+### Relevant Articles: 
+================================
+
+- [Apache Maven Standard Directory Layout](http://www.baeldung.com/maven-directory-structure)
+- [Apache Maven Tutorial](http://www.baeldung.com/maven)
+- [Designing a User Friendly Java Library](http://www.baeldung.com/design-a-user-friendly-java-library)

algorithms/README.md

@@ -21,3 +21,4 @@
 - [Create a Sudoku Solver in Java](http://www.baeldung.com/java-sudoku)
 - [Displaying Money Amounts in Words](http://www.baeldung.com/java-money-into-words)
 - [A Collaborative Filtering Recommendation System in Java](http://www.baeldung.com/java-collaborative-filtering-recommendations)
+- [Find All Pairs of Numbers in an Array That Add Up to a Given Sum](http://www.baeldung.com/java-algorithm-number-pairs-sum)

asciidoctor/README.md

@@ -2,3 +2,4 @@
 
 - [Introduction to Asciidoctor](http://www.baeldung.com/introduction-to-asciidoctor)
 - [Generating a Book with Asciidoctor](http://www.baeldung.com/asciidoctor-book)
+- [Introduction to Asciidoctor in Java](http://www.baeldung.com/asciidoctor)

aws/README.md

@@ -8,4 +8,5 @@
 - [Multipart Uploads in Amazon S3 with Java](http://www.baeldung.com/aws-s3-multipart-upload)
 - [Integration Testing with a Local DynamoDB Instance](http://www.baeldung.com/dynamodb-local-integration-tests)
 - [Using the JetS3t Java Client With Amazon S3](http://www.baeldung.com/jets3t-amazon-s3)
+- [Managing Amazon SQS Queues in Java](http://www.baeldung.com/aws-queues-java)
 

cdi/pom.xml

@@ -8,16 +8,12 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>parent-modules</artifactId>
+        <artifactId>parent-spring</artifactId>
-        <version>1.0.0-SNAPSHOT</version>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../parent-spring</relativePath>
     </parent>
 
     <dependencies>
-        <dependency>
-            <groupId>org.springframework</groupId>
-            <artifactId>spring-core</artifactId>
-            <version>${spring.version}</version>
-        </dependency>
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-context</artifactId>

core-groovy/pom.xml

@@ -28,12 +28,6 @@
             <artifactId>groovy-sql</artifactId>
             <version>${groovy-sql.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.junit.jupiter</groupId>
-            <artifactId>junit-jupiter-engine</artifactId>
-            <version>${junit.jupiter.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>org.junit.platform</groupId>
             <artifactId>junit-platform-runner</artifactId>

core-java-10/src/test/java/com/baeldung/java10/Java10FeaturesUnitTest.java

@@ -0,0 +1,61 @@
+package com.baeldung.java10;
+
+import static org.hamcrest.CoreMatchers.is;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.stream.Collectors;
+
+import org.junit.Before;
+import org.junit.Test;
+
+public class Java10FeaturesUnitTest {
+
+    private List<Integer> someIntList;
+    
+    @Before
+    public void setup() {
+        someIntList = new ArrayList<>();
+        
+        someIntList.add(1);
+        someIntList.add(2);
+        someIntList.add(3);
+    }
+
+    @Test
+    public void whenVarInitWithString_thenGetStringTypeVar() {
+        var message = "Hello, Java 10";
+        assertTrue(message instanceof String);
+    }
+
+    @Test
+    public void whenVarInitWithAnonymous_thenGetAnonymousType() {
+        var obj = new Object() {};
+        assertFalse(obj.getClass().equals(Object.class));
+    }
+
+    @Test(expected = UnsupportedOperationException.class)
+    public void whenModifyCopyOfList_thenThrowsException() {
+        List<Integer> copyList = List.copyOf(someIntList);
+        copyList.add(4);
+    }
+
+    @Test(expected = UnsupportedOperationException.class)
+    public void whenModifyToUnmodifiableList_thenThrowsException() {
+        List<Integer> evenList = someIntList.stream()
+          .filter(i -> i % 2 == 0)
+          .collect(Collectors.toUnmodifiableList());
+        evenList.add(4);
+    }
+
+    @Test
+    public void whenListContainsInteger_OrElseThrowReturnsInteger() {
+        Integer firstEven = someIntList.stream()
+          .filter(i -> i % 2 == 0)
+          .findFirst()
+          .orElseThrow();
+        is(firstEven).equals(Integer.valueOf(2));
+    }
+}

core-java-8/README.md

@@ -47,3 +47,7 @@
 - [Overview of Java Built-in Annotations](http://www.baeldung.com/java-default-annotations)
 - [Finding Min/Max in an Array with Java](http://www.baeldung.com/java-array-min-max)
 - [Internationalization and Localization in Java 8](http://www.baeldung.com/java-8-localization)
+- [Filtering Kotlin Collections](http://www.baeldung.com/kotlin-filter-collection)
+- [How to Find an Element in a List with Java](http://www.baeldung.com/find-list-element-java)
+- [Measure Elapsed Time in Java](http://www.baeldung.com/java-measure-elapsed-time)
+

core-java-8/pom.xml

@@ -9,17 +9,12 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>parent-modules</artifactId>
+        <artifactId>parent-java</artifactId>
-        <version>1.0.0-SNAPSHOT</version>
+    	<version>0.0.1-SNAPSHOT</version>
+    	<relativePath>../parent-java</relativePath>
     </parent>
 
     <dependencies>
-        <!-- utils -->
-        <dependency>
-            <groupId>com.google.guava</groupId>
-            <artifactId>guava</artifactId>
-            <version>${guava.version}</version>
-        </dependency>
         <dependency>
             <groupId>org.apache.commons</groupId>
             <artifactId>commons-collections4</artifactId>

core-java-collections/pom.xml

@@ -8,10 +8,11 @@
 	<name>core-java-collections</name>
 
 	<parent>
-		<groupId>com.baeldung</groupId>
+        <groupId>com.baeldung</groupId>
-		<artifactId>parent-modules</artifactId>
+        <artifactId>parent-java</artifactId>
-		<version>1.0.0-SNAPSHOT</version>
+    	<version>0.0.1-SNAPSHOT</version>
-	</parent>
+    	<relativePath>../parent-java</relativePath>
+    </parent>
 
 	<dependencies>
 		<dependency>
@@ -25,11 +26,6 @@
 			<artifactId>collections-generic</artifactId>
 			<version>${collections-generic.version}</version>
 		</dependency>
-		<dependency>
-			<groupId>com.google.guava</groupId>
-			<artifactId>guava</artifactId>
-			<version>${guava.version}</version>
-		</dependency>
 		<dependency>
 			<groupId>org.apache.commons</groupId>
 			<artifactId>commons-collections4</artifactId>
@@ -55,7 +51,6 @@
 	</dependencies>
 
 	<properties>
-		<guava.version>22.0</guava.version>
 		<commons-lang3.version>3.5</commons-lang3.version>
 		<commons-collections4.version>4.1</commons-collections4.version>
 		<collections-generic.version>4.01</collections-generic.version>

core-java-concurrency/pom.xml

@@ -9,17 +9,12 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>parent-modules</artifactId>
+        <artifactId>parent-java</artifactId>
-        <version>1.0.0-SNAPSHOT</version>
+    	<version>0.0.1-SNAPSHOT</version>
+    	<relativePath>../parent-java</relativePath>
     </parent>
 
     <dependencies>
-        <!-- utils -->
-        <dependency>
-            <groupId>com.google.guava</groupId>
-            <artifactId>guava</artifactId>
-            <version>${guava.version}</version>
-        </dependency>
         <dependency>
             <groupId>org.apache.commons</groupId>
             <artifactId>commons-collections4</artifactId>

core-java-io/pom.xml

@@ -9,8 +9,9 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>parent-modules</artifactId>
+        <artifactId>parent-java</artifactId>
-        <version>1.0.0-SNAPSHOT</version>
+    	<version>0.0.1-SNAPSHOT</version>
+    	<relativePath>../parent-java</relativePath>
     </parent>
 
     <dependencies>
@@ -20,11 +21,6 @@
             <artifactId>collections-generic</artifactId>
             <version>${collections-generic.version}</version>
         </dependency>
-        <dependency>
-            <groupId>com.google.guava</groupId>
-            <artifactId>guava</artifactId>
-            <version>${guava.version}</version>
-        </dependency>
         <dependency>
             <groupId>org.apache.commons</groupId>
             <artifactId>commons-collections4</artifactId>

core-java-sun/pom.xml

@@ -8,8 +8,9 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>parent-modules</artifactId>
+        <artifactId>parent-java</artifactId>
-        <version>1.0.0-SNAPSHOT</version>
+    	<version>0.0.1-SNAPSHOT</version>
+    	<relativePath>../parent-java</relativePath>
     </parent>
 
     <dependencies>
@@ -19,11 +20,6 @@
             <artifactId>collections-generic</artifactId>
             <version>${collections-generic.version}</version>
         </dependency>
-        <dependency>
-            <groupId>com.google.guava</groupId>
-            <artifactId>guava</artifactId>
-            <version>${guava.version}</version>
-        </dependency>
         <dependency>
             <groupId>org.apache.commons</groupId>
             <artifactId>commons-collections4</artifactId>

core-java/README.md

@@ -140,3 +140,9 @@
 - [Type Erasure in Java Explained](http://www.baeldung.com/java-type-erasure)
 - [BigDecimal and BigInteger in Java](http://www.baeldung.com/java-bigdecimal-biginteger)
 - [Display All Time Zones With GMT And UTC in Java](http://www.baeldung.com/java-time-zones)
+- [Join and Split Arrays and Collections in Java](http://www.baeldung.com/java-join-and-split)
+- [Check If Two Lists are Equal in Java](http://www.baeldung.com/java-test-a-list-for-ordinality-and-equality)
+- [Sending Emails with Java](http://www.baeldung.com/java-email)
+- [Introduction to SSL in Java](http://www.baeldung.com/java-ssl)
+- [Java KeyStore API](http://www.baeldung.com/java-keystore)
+- [Double-Checked Locking with Singleton](http://www.baeldung.com/java-singleton-double-checked-locking)

core-java/pom.xml

@@ -9,17 +9,12 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>parent-modules</artifactId>
+        <artifactId>parent-java</artifactId>
-        <version>1.0.0-SNAPSHOT</version>
+    	<version>0.0.1-SNAPSHOT</version>
+    	<relativePath>../parent-java</relativePath>
     </parent>
 
     <dependencies>
-        <!-- utils -->
-        <dependency>
-            <groupId>com.google.guava</groupId>
-            <artifactId>guava</artifactId>
-            <version>${guava.version}</version>
-        </dependency>
         <dependency>
             <groupId>commons-io</groupId>
             <artifactId>commons-io</artifactId>
@@ -438,7 +433,6 @@
         <log4j.version>1.2.17</log4j.version>
 
         <!-- util -->
-        <guava.version>22.0</guava.version>
         <commons-lang3.version>3.5</commons-lang3.version>
         <bouncycastle.version>1.55</bouncycastle.version>
         <commons-codec.version>1.10</commons-codec.version>

core-java/src/main/java/com/baeldung/designpatterns/composite/CompositeDemo.java

@@ -0,0 +1,19 @@
+package com.baeldung.designpatterns.composite;
+
+/**
+ * Created by Gebruiker on 5/3/2018.
+ */
+public class CompositeDemo {
+
+    public static void main(String args[]) {
+        Department salesDepartment = new SalesDepartment(1, "Sales department");
+        Department financialDepartment = new FinancialDepartment(2, "Financial department");
+
+        HeadDepartment headDepartment = new HeadDepartment(3, "Head department");
+
+        headDepartment.addDepartMent(salesDepartment);
+        headDepartment.addDepartMent(financialDepartment);
+
+        headDepartment.printDepartmentName();
+    }
+}

core-java/src/main/java/com/baeldung/designpatterns/composite/Department.java

@@ -0,0 +1,9 @@
+package com.baeldung.designpatterns.composite;
+
+/**
+ * Created by Gebruiker on 5/1/2018.
+ */
+public interface Department {
+
+    void printDepartmentName();
+}

core-java/src/main/java/com/baeldung/designpatterns/composite/FinancialDepartment.java

@@ -0,0 +1,35 @@
+package com.baeldung.designpatterns.composite;
+
+/**
+ * Created by Gebruiker on 5/1/2018.
+ */
+public class FinancialDepartment implements Department {
+
+    private Integer id;
+    private String name;
+
+    public FinancialDepartment(Integer id, String name) {
+        this.id = id;
+        this.name = name;
+    }
+
+    public void printDepartmentName() {
+        System.out.println(getClass().getSimpleName());
+    }
+
+    public Integer getId() {
+        return id;
+    }
+
+    public void setId(Integer id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+}

core-java/src/main/java/com/baeldung/designpatterns/composite/HeadDepartment.java

@@ -0,0 +1,33 @@
+package com.baeldung.designpatterns.composite;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Created by Gebruiker on 5/1/2018.
+ */
+public class HeadDepartment implements Department {
+
+    private Integer id;
+    private String name;
+
+    private List<Department> childDepartments;
+
+    public HeadDepartment(Integer id, String name) {
+        this.id = id;
+        this.name = name;
+        this.childDepartments = new ArrayList<Department>();
+    }
+
+    public void printDepartmentName() {
+        childDepartments.forEach(Department::printDepartmentName);
+    }
+
+    public void addDepartMent(Department department) {
+        childDepartments.add(department);
+    }
+
+    public void removeDepartment(Department department) {
+        childDepartments.remove(department);
+    }
+}

core-java/src/main/java/com/baeldung/designpatterns/composite/SalesDepartment.java

@@ -0,0 +1,35 @@
+package com.baeldung.designpatterns.composite;
+
+/**
+ * Created by Gebruiker on 5/1/2018.
+ */
+public class SalesDepartment implements Department {
+
+    private Integer id;
+    private String name;
+
+    public SalesDepartment(Integer id, String name) {
+        this.id = id;
+        this.name = name;
+    }
+
+    public void printDepartmentName() {
+        System.out.println(getClass().getSimpleName());
+    }
+
+    public Integer getId() {
+        return id;
+    }
+
+    public void setId(Integer id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+}

core-kotlin/pom.xml

@@ -25,12 +25,6 @@
             <artifactId>commons-math3</artifactId>
             <version>${commons-math3.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.junit.jupiter</groupId>
-            <artifactId>junit-jupiter-engine</artifactId>
-            <version>${junit.jupiter.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>org.junit.platform</groupId>
             <artifactId>junit-platform-runner</artifactId>

core-kotlin/src/main/kotlin/com/baeldung/filesystem/FileWriter.kt

@@ -0,0 +1,19 @@
+package com.baeldung.filesystem
+
+import java.io.File
+
+class FileWriter {
+
+    fun writeFileUsingPrintWriter(fileName: String, fileContent: String) =
+            File(fileName).printWriter().use { out -> out.print(fileContent) }
+
+    fun writeFileUsingBufferedWriter(fileName: String, fileContent: String) =
+            File(fileName).bufferedWriter().use { out -> out.write(fileContent) }
+
+    fun writeFileDirectly(fileName: String, fileContent: String) =
+            File(fileName).writeText(fileContent)
+
+    fun writeFileDirectlyAsBytes(fileName: String, fileContent: String) =
+            File(fileName).writeBytes(fileContent.toByteArray())
+
+}

core-kotlin/src/test/kotlin/com/baeldung/filesystem/FileWriterTest.kt

@@ -0,0 +1,43 @@
+package com.baeldung.filesystem
+
+import org.junit.jupiter.api.Test
+import java.io.File
+import kotlin.test.assertEquals
+
+internal class FileWriterTest {
+
+    private val fileName = "src/test/resources/Kotlin.out"
+
+    private val fileContent = "Kotlin\nConcise, Safe, Interoperable, Tool-friendly"
+
+    private val fileWriter = FileWriter()
+
+    @Test
+    fun whenWrittenWithPrintWriter_thenCorrect() {
+        fileWriter.writeFileUsingPrintWriter(fileName, fileContent)
+
+        assertEquals(fileContent, File(fileName).readText())
+    }
+
+    @Test
+    fun whenWrittenWithBufferedWriter_thenCorrect() {
+        fileWriter.writeFileUsingBufferedWriter(fileName, fileContent)
+
+        assertEquals(fileContent, File(fileName).readText())
+    }
+
+    @Test
+    fun whenWrittenDirectly_thenCorrect() {
+        fileWriter.writeFileDirectly(fileName, fileContent)
+
+        assertEquals(fileContent, File(fileName).readText())
+    }
+
+    @Test
+    fun whenWrittenDirectlyAsBytes_thenCorrect() {
+        fileWriter.writeFileDirectlyAsBytes(fileName, fileContent)
+
+        assertEquals(fileContent, File(fileName).readText())
+    }
+
+}

drools/pom.xml

@@ -5,10 +5,11 @@
     <artifactId>drools</artifactId>
 
     <parent>
-        <groupId>com.baeldung</groupId>
+		<groupId>com.baeldung</groupId>
-        <artifactId>parent-modules</artifactId>
+		<artifactId>parent-spring</artifactId>
-        <version>1.0.0-SNAPSHOT</version>
+		<version>0.0.1-SNAPSHOT</version>
-    </parent>
+		<relativePath>../parent-spring</relativePath>
+	</parent>
 
     <dependencies>
         <dependency>
@@ -47,18 +48,13 @@
             <artifactId>poi-ooxml</artifactId>
             <version>${apache-poi-version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.springframework</groupId>
-            <artifactId>spring-core</artifactId>
-            <version>${spring-core.version}</version>
-        </dependency>
     </dependencies>
 
     <properties>
         <http-component-version>4.4.6</http-component-version>
         <drools-version>7.4.1.Final</drools-version>
         <apache-poi-version>3.13</apache-poi-version>
-        <spring-core.version>4.3.6.RELEASE</spring-core.version>
+        <spring.version>4.3.6.RELEASE</spring.version>
     </properties>
 
 </project>

gson/pom.xml

@@ -8,8 +8,9 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>parent-modules</artifactId>
+        <artifactId>parent-java</artifactId>
-        <version>1.0.0-SNAPSHOT</version>
+    	<version>0.0.1-SNAPSHOT</version>
+    	<relativePath>../parent-java</relativePath>
     </parent>
 
     <dependencies>
@@ -19,11 +20,6 @@
             <artifactId>joda-time</artifactId>
             <version>${joda-time.version}</version>
         </dependency>
-        <dependency>
-            <groupId>com.google.guava</groupId>
-            <artifactId>guava</artifactId>
-            <version>${guava.version}</version>
-        </dependency>
         <dependency>
             <groupId>commons-io</groupId>
             <artifactId>commons-io</artifactId>

guava-modules/guava-18/pom.xml

@@ -8,19 +8,11 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>parent-modules</artifactId>
+        <artifactId>parent-java</artifactId>
-        <version>1.0.0-SNAPSHOT</version>
+    	<version>0.0.1-SNAPSHOT</version>
-        <relativePath>../../</relativePath>
+    	<relativePath>../../parent-java</relativePath>
     </parent>
 
-    <dependencies>
-        <dependency>
-            <groupId>com.google.guava</groupId>
-            <artifactId>guava</artifactId>
-            <version>${guava.version}</version>
-        </dependency>
-    </dependencies>
-
     <properties>
         <guava.version>18.0</guava.version>
     </properties>

guava-modules/guava-19/pom.xml

@@ -8,19 +8,11 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>parent-modules</artifactId>
+        <artifactId>parent-java</artifactId>
-        <version>1.0.0-SNAPSHOT</version>
+    	<version>0.0.1-SNAPSHOT</version>
-        <relativePath>../../</relativePath>
+    	<relativePath>../../parent-java</relativePath>
     </parent>
 
-    <dependencies>
-        <dependency>
-            <groupId>com.google.guava</groupId>
-            <artifactId>guava</artifactId>
-            <version>${guava.version}</version>
-        </dependency>
-    </dependencies>
-
     <properties>
         <guava.version>19.0</guava.version>
     </properties>

guava-modules/guava-21/pom.xml

@@ -7,18 +7,12 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>parent-modules</artifactId>
+        <artifactId>parent-java</artifactId>
-        <version>1.0.0-SNAPSHOT</version>
+    	<version>0.0.1-SNAPSHOT</version>
-        <relativePath>../../</relativePath>
+    	<relativePath>../../parent-java</relativePath>
     </parent>
 
     <dependencies>
-        <dependency>
-            <groupId>com.google.guava</groupId>
-            <artifactId>guava</artifactId>
-            <version>${guava.version}</version>
-        </dependency>
-
         <dependency>
             <groupId>org.jooq</groupId>
             <artifactId>jool</artifactId>

guava/pom.xml

@@ -8,17 +8,13 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>parent-modules</artifactId>
+        <artifactId>parent-java</artifactId>
-        <version>1.0.0-SNAPSHOT</version>
+    	<version>0.0.1-SNAPSHOT</version>
+    	<relativePath>../parent-java</relativePath>
     </parent>
 
     <dependencies>
         <!-- utils -->
-        <dependency>
-            <groupId>com.google.guava</groupId>
-            <artifactId>guava</artifactId>
-            <version>${guava.version}</version>
-        </dependency>
         <dependency>
             <groupId>org.apache.commons</groupId>
             <artifactId>commons-collections4</artifactId>

guest/junit5-example/pom.xml

@@ -11,11 +11,6 @@
         <relativePath>../../</relativePath>
     </parent>
     <dependencies>
-        <dependency>
-            <groupId>org.junit.jupiter</groupId>
-            <artifactId>junit-jupiter-engine</artifactId>
-            <version>5.0.0-M4</version>
-        </dependency>
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter-params</artifactId>
@@ -62,4 +57,8 @@
             </plugin>
         </plugins>
     </build>
+    
+    <properties>
+    	
+    </properties>
 </project>

handling-spring-static-resources/pom.xml

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

hibernate5/README.md

@@ -9,3 +9,4 @@
 - [Hibernate Interceptors](http://www.baeldung.com/hibernate-interceptor)
 - [JPA Attribute Converters](http://www.baeldung.com/jpa-attribute-converters)
 - [Mapping LOB Data in Hibernate](http://www.baeldung.com/hibernate-lob)
+- [@Immutable in Hibernate](http://www.baeldung.com/hibernate-immutable)

httpclient/pom.xml

@@ -8,17 +8,13 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>parent-modules</artifactId>
+        <artifactId>parent-java</artifactId>
-        <version>1.0.0-SNAPSHOT</version>
+    	<version>0.0.1-SNAPSHOT</version>
+    	<relativePath>../parent-java</relativePath>
     </parent>
 
     <dependencies>
         <!-- utils -->
-        <dependency>
-            <groupId>com.google.guava</groupId>
-            <artifactId>guava</artifactId>
-            <version>${guava.version}</version>
-        </dependency>
         <dependency>
             <groupId>org.apache.commons</groupId>
             <artifactId>commons-lang3</artifactId>

jackson/pom.xml

@@ -8,18 +8,13 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>parent-modules</artifactId>
+        <artifactId>parent-java</artifactId>
-        <version>1.0.0-SNAPSHOT</version>
+    	<version>0.0.1-SNAPSHOT</version>
+    	<relativePath>../parent-java</relativePath>
     </parent>
 
     <dependencies>
         <!-- utils -->
-        <dependency>
-            <groupId>com.google.guava</groupId>
-            <artifactId>guava</artifactId>
-            <version>${guava.version}</version>
-        </dependency>
-
         <dependency>
             <groupId>commons-io</groupId>
             <artifactId>commons-io</artifactId>

jmh/pom.xml

@@ -10,8 +10,9 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>parent-modules</artifactId>
+        <artifactId>parent-java</artifactId>
-        <version>1.0.0-SNAPSHOT</version>
+    	<version>0.0.1-SNAPSHOT</version>
+    	<relativePath>../parent-java</relativePath>
     </parent>
 
     <dependencies>
@@ -25,17 +26,6 @@
             <artifactId>jmh-generator-annprocess</artifactId>
             <version>${openjdk.jmh.version}</version>
         </dependency>
-        <dependency>
-            <groupId>junit</groupId>
-            <artifactId>junit</artifactId>
-            <version>${junit.version}</version>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>com.google.guava</groupId>
-            <artifactId>guava</artifactId>
-            <version>${guava.version}</version>
-        </dependency>
     </dependencies>
 
     <build>

jsf/README.md

@@ -2,3 +2,4 @@
 - [Introduction to JSF Expression Language 3.0](http://www.baeldung.com/jsf-expression-language-el-3)
 - [Introduction to JSF EL 2](http://www.baeldung.com/intro-to-jsf-expression-language)
 - [JavaServer Faces (JSF) with Spring](http://www.baeldung.com/spring-jsf)
+- [Introduction to Primefaces](http://www.baeldung.com/jsf-primefaces)

jsonb/pom.xml

@@ -34,12 +34,6 @@
             <artifactId>junit-jupiter-api</artifactId>
             <version>${junit.jupiter.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.junit.jupiter</groupId>
-            <artifactId>junit-jupiter-engine</artifactId>
-            <version>${junit.jupiter.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>org.junit.platform</groupId>
             <artifactId>junit-platform-surefire-provider</artifactId>

libraries/README.md

@@ -65,7 +65,7 @@
 - [Creating and Configuring Jetty 9 Server in Java](http://www.baeldung.com/jetty-java-programmatic)
 - [Introduction To OpenCSV](http://www.baeldung.com/opencsv)
 - [Introduction to Akka Actors in Java](http://www.baeldung.com/akka-actors-java)
-- [Asynchronous HTTP with async-http-client in Java](https://github.com/eugenp/tutorials/tree/master/libraries)
+- [Asynchronous HTTP with async-http-client in Java](http://www.baeldung.com/async-http-client)
 - [Introduction to Smooks](http://www.baeldung.com/smooks)
 - [WebSockets with AsyncHttpClient](http://www.baeldung.com/async-http-client-websockets)
 - [A Guide to Infinispan in Java](http://www.baeldung.com/infinispan)
@@ -82,6 +82,8 @@
 - [Publish and Receive Messages with Nats Java Client](http://www.baeldung.com/nats-java-client)
 - [Java Concurrency Utility with JCTools](http://www.baeldung.com/java-concurrency-jc-tools)
 - [Apache Commons Collections MapUtils](http://www.baeldung.com/apache-commons-map-utils)
+- [Testing Netty with EmbeddedChannel](http://www.baeldung.com/testing-netty-embedded-channel)
+
 
 The libraries module contains examples related to small libraries that are relatively easy to use and does not require any separate module of its own.
 

logging-modules/README.md

@@ -5,3 +5,4 @@
 
 - [Creating a Custom Logback Appender](http://www.baeldung.com/custom-logback-appender)
 - [Get Log Output in JSON Format](http://www.baeldung.com/java-log-json-output)
+- [A Guide To Logback](http://www.baeldung.com/a-guide-to-logback)

logging-modules/log-mdc/pom.xml

@@ -9,28 +9,22 @@
     <description>tutorial on logging with MDC and NDC</description>
 
     <parent>
-        <groupId>com.baeldung</groupId>
+		<groupId>com.baeldung</groupId>
-        <artifactId>parent-modules</artifactId>
+		<artifactId>parent-spring</artifactId>
-        <version>1.0.0-SNAPSHOT</version>
+		<version>0.0.1-SNAPSHOT</version>
-        <relativePath>../../</relativePath>
+		<relativePath>../../parent-spring</relativePath>
-    </parent>
+	</parent>
 
     <dependencies>
-
-        <dependency>
-            <groupId>org.springframework</groupId>
-            <artifactId>spring-core</artifactId>
-            <version>${springframework.version}</version>
-        </dependency>
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-web</artifactId>
-            <version>${springframework.version}</version>
+            <version>${spring.version}</version>
         </dependency>
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-webmvc</artifactId>
-            <version>${springframework.version}</version>
+            <version>${spring.version}</version>
         </dependency>
         <dependency>
             <groupId>javax.servlet</groupId>
@@ -79,14 +73,14 @@
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-test</artifactId>
-            <version>${springframework.version}</version>
+            <version>${spring.version}</version>
             <scope>test</scope>
         </dependency>
 
     </dependencies>
 
     <properties>
-        <springframework.version>4.3.4.RELEASE</springframework.version>
+        <spring.version>4.3.4.RELEASE</spring.version>
         <log4j.version>1.2.17</log4j.version>
         <log4j2.version>2.7</log4j2.version>
         <disruptor.version>3.3.6</disruptor.version>

logging-modules/log4j2-programmatic-configuration/modify-xml-configuration/pom.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0"?>
+<project
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
+	xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+	<modelVersion>4.0.0</modelVersion>
+	<parent>
+		<groupId>com.baeldung.log4j2</groupId>
+		<artifactId>log4j2-programmatic-configuration</artifactId>
+		<version>0.0.1-SNAPSHOT</version>
+	</parent>
+	<groupId>com.baeldung.log4j2</groupId>
+	<artifactId>modify-xml-configuration</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+	<name>modify-xml-configuration</name>
+	<url>http://maven.apache.org</url>
+	<properties>
+		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+	</properties>
+</project>

logging-modules/log4j2-programmatic-configuration/modify-xml-configuration/src/main/java/com/baeldung/log4j2/config/CustomXMLConfigurationFactory.java

@@ -0,0 +1,29 @@
+/**
+  This class demonstrates on modifying the loaded xml configuration by
+  extending XMLConfigurationFactory as defined in section 4.4 of 
+  "Programmatic Configuration with Log4j 2"
+**/
+package com.baeldung.log4j2.config;
+
+import org.apache.logging.log4j.core.LoggerContext;
+import org.apache.logging.log4j.core.config.Configuration;
+import org.apache.logging.log4j.core.config.ConfigurationFactory;
+import org.apache.logging.log4j.core.config.ConfigurationSource;
+import org.apache.logging.log4j.core.config.Order;
+import org.apache.logging.log4j.core.config.plugins.Plugin;
+import org.apache.logging.log4j.core.config.xml.XmlConfigurationFactory;
+
+@Plugin(name = "CustomConfigurationFactory", category = ConfigurationFactory.CATEGORY)
+@Order(50)
+public class CustomXMLConfigurationFactory extends XmlConfigurationFactory {
+
+    @Override
+    public Configuration getConfiguration(LoggerContext loggerContext, ConfigurationSource source) {
+        return new MyXMLConfiguration(loggerContext, source);
+    }
+
+    @Override
+    public String[] getSupportedTypes() {
+        return new String[] { ".xml", "*" };
+    }
+}

logging-modules/log4j2-programmatic-configuration/modify-xml-configuration/src/main/java/com/baeldung/log4j2/config/MyXMLConfiguration.java

@@ -0,0 +1,35 @@
+/**
+  This class demonstrates on overriding the configuration loaded through xml
+  as defined in section 4.4 of "Programmatic Configuration with Log4j 2"
+**/
+package com.baeldung.log4j2.config;
+
+import org.apache.logging.log4j.Level;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.core.Appender;
+import org.apache.logging.log4j.core.Layout;
+import org.apache.logging.log4j.core.LoggerContext;
+import org.apache.logging.log4j.core.appender.FileAppender;
+import org.apache.logging.log4j.core.config.Configuration;
+import org.apache.logging.log4j.core.config.ConfigurationSource;
+import org.apache.logging.log4j.core.config.LoggerConfig;
+import org.apache.logging.log4j.core.config.xml.XmlConfiguration;
+import org.apache.logging.log4j.core.layout.PatternLayout;
+
+public class MyXMLConfiguration extends XmlConfiguration {
+    public MyXMLConfiguration(LoggerContext loggerContext, ConfigurationSource source) {
+        super(loggerContext, source);
+    }
+
+    @Override
+    protected void doConfigure() {
+        super.doConfigure();
+        final LoggerContext ctx = (LoggerContext) LogManager.getContext(false);
+        Configuration config = ctx.getConfiguration();
+        LoggerConfig loggerConfig = config.getLoggerConfig("com");
+        final Layout layout = PatternLayout.createLayout("[%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %c{1} - %msg%n", null, config, null, null, false, false, null, null);
+        Appender appender = FileAppender.createAppender("target/test.log", "false", "false", "File", "true", "false", "false", "4000", layout, null, "false", null, config);
+        loggerConfig.addAppender(appender, Level.DEBUG, null);
+        addAppender(appender);
+    }
+}

logging-modules/log4j2-programmatic-configuration/modify-xml-configuration/src/main/resources/log4j2.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Configuration monitorInterval="60">
+	<Appenders>
+		<Console name="console" target="SYSTEM_OUT">
+			<PatternLayout
+				pattern="[%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %c{1} - %msg%n" />
+		</Console>
+	</Appenders>
+	<Loggers>
+		<Logger name="com" additivity="false" level="info">
+			<AppenderRef ref="console" />
+		</Logger>
+		<Root>
+			<AppenderRef ref="console" />
+		</Root>
+	</Loggers>
+</Configuration>

logging-modules/log4j2-programmatic-configuration/modify-xml-configuration/src/test/java/com/baeldung/log4j2/logtest/LogTest.java

@@ -0,0 +1,23 @@
+package com.baeldung.log4j2.logtest;
+
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+import org.apache.logging.log4j.core.LoggerContext;
+import org.apache.logging.log4j.core.config.plugins.util.PluginManager;
+import org.junit.Test;
+
+
+public class LogTest {
+    static{
+        PluginManager.addPackage("com.baeldung.log4j2.config");
+    }
+    
+    @Test
+    public void simpleProgrammaticConfiguration() {
+        Logger logger = LogManager.getLogger();
+        LoggerContext ctx = (LoggerContext) LogManager.getContext();
+        logger.debug("Debug log message");
+        logger.info("Info log message");
+        logger.error("Error log message");
+    }
+}

logging-modules/log4j2-programmatic-configuration/pom.xml

@@ -0,0 +1,34 @@
+<?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.log4j2</groupId>
+	<artifactId>log4j2-programmatic-configuration</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+	<packaging>pom</packaging>
+	<modules>
+		<module>simple-configuration</module>
+		<module>set-configuration-factory</module>
+		<module>simple-configurator</module>
+		<module>simple-configuration-xml</module>
+		<module>modify-xml-configuration</module>
+	</modules>
+	<dependencies>
+		<dependency>
+			<groupId>junit</groupId>
+			<artifactId>junit</artifactId>
+			<version>4.12</version>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.apache.logging.log4j</groupId>
+			<artifactId>log4j-core</artifactId>
+			<version>2.11.0</version>
+		</dependency>
+		<dependency>
+			<groupId>org.apache.logging.log4j</groupId>
+			<artifactId>log4j-slf4j-impl</artifactId>
+			<version>2.11.0</version>
+		</dependency>
+	</dependencies>
+</project>

logging-modules/log4j2-programmatic-configuration/set-configuration-factory/pom.xml

@@ -0,0 +1,10 @@
+<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>
+	<parent>
+		<groupId>com.baeldung.log4j2</groupId>
+		<artifactId>log4j2-programmatic-configuration</artifactId>
+		<version>0.0.1-SNAPSHOT</version>
+	</parent>
+	<artifactId>set-configuration-factory</artifactId>
+</project>

logging-modules/log4j2-programmatic-configuration/set-configuration-factory/src/main/java/com/baeldung/log4j2/config/CustomConfigurationFactory.java

@@ -0,0 +1,88 @@
+/**
+  This class demonstrates how to build the components of 
+  the configuration factory, as described in Section 3 of 
+  "Programmatic Configuration with Log4j 2"
+**/
+package com.baeldung.log4j2.config;
+
+import java.io.IOException;
+import java.net.URI;
+
+import org.apache.logging.log4j.Level;
+import org.apache.logging.log4j.core.Filter;
+import org.apache.logging.log4j.core.LoggerContext;
+import org.apache.logging.log4j.core.config.Configuration;
+import org.apache.logging.log4j.core.config.ConfigurationFactory;
+import org.apache.logging.log4j.core.config.ConfigurationSource;
+import org.apache.logging.log4j.core.config.builder.api.AppenderComponentBuilder;
+import org.apache.logging.log4j.core.config.builder.api.ComponentBuilder;
+import org.apache.logging.log4j.core.config.builder.api.ConfigurationBuilder;
+import org.apache.logging.log4j.core.config.builder.api.FilterComponentBuilder;
+import org.apache.logging.log4j.core.config.builder.api.LayoutComponentBuilder;
+import org.apache.logging.log4j.core.config.builder.api.LoggerComponentBuilder;
+import org.apache.logging.log4j.core.config.builder.api.RootLoggerComponentBuilder;
+import org.apache.logging.log4j.core.config.builder.impl.BuiltConfiguration;
+
+public class CustomConfigurationFactory extends ConfigurationFactory {
+
+    static Configuration createConfiguration(final String name, ConfigurationBuilder<BuiltConfiguration> builder) {
+        AppenderComponentBuilder console = builder.newAppender("Stdout", "Console");
+        LayoutComponentBuilder layout = builder.newLayout("PatternLayout")
+            .addAttribute("pattern", "%d [%t] %-5level: %msg%n%throwable");
+        console.add(layout);
+        FilterComponentBuilder filter = builder.newFilter("MarkerFilter", Filter.Result.ACCEPT, Filter.Result.DENY);
+        filter.addAttribute("marker", "FLOW");
+        console.add(filter);
+        builder.add(console);
+        ComponentBuilder triggeringPolicies = builder.newComponent("Policies")
+            .addComponent(builder.newComponent("CronTriggeringPolicy")
+                .addAttribute("schedule", "0 0 0 * * ?"))
+            .addComponent(builder.newComponent("SizeBasedTriggeringPolicy")
+                .addAttribute("size", "100M"));
+        AppenderComponentBuilder rollingFile = builder.newAppender("rolling", "RollingFile");
+        rollingFile.addAttribute("fileName", "target/rolling.log");
+        rollingFile.addAttribute("filePattern", "target/archive/rolling-%d{MM-dd-yy}.log.gz");
+        rollingFile.add(layout);
+        rollingFile.addComponent(triggeringPolicies);
+        builder.add(rollingFile);
+        AppenderComponentBuilder file = builder.newAppender("FileSystem", "File");
+        file.addAttribute("fileName", "target/logging.log");
+        file.add(layout);
+        builder.add(file);
+        LoggerComponentBuilder logger = builder.newLogger("com", Level.DEBUG);
+        logger.add(builder.newAppenderRef("Stdout"));
+        logger.add(builder.newAppenderRef("rolling"));
+        logger.add(builder.newAppenderRef("FileSystem"));
+        logger.addAttribute("additivity", false);
+        builder.add(logger);
+        RootLoggerComponentBuilder rootLogger = builder.newRootLogger(Level.ERROR);
+        rootLogger.add(builder.newAppenderRef("Stdout"));
+        rootLogger.add(builder.newAppenderRef("rolling"));
+        rootLogger.add(builder.newAppenderRef("FileSystem"));
+        rootLogger.addAttribute("additivity", false);
+        builder.add(rootLogger);
+        try {
+            builder.writeXmlConfiguration(System.out);
+        } catch (IOException e) {
+            // TODO Auto-generated catch block
+            e.printStackTrace();
+        }
+        return builder.build();
+    }
+
+    public Configuration getConfiguration(final LoggerContext loggerContext, final String name, final URI configLocation) {
+        ConfigurationBuilder<BuiltConfiguration> builder = newConfigurationBuilder();
+        return createConfiguration(name, builder);
+    }
+
+    @Override
+    protected String[] getSupportedTypes() {
+        return new String[] { "*" };
+    }
+
+    @Override
+    public Configuration getConfiguration(LoggerContext loggerContext, ConfigurationSource source) {
+        return getConfiguration(loggerContext, source.toString(), null);
+    }
+
+}

logging-modules/log4j2-programmatic-configuration/set-configuration-factory/src/test/java/com/baeldung/log4j2/logtest/LogTest.java

@@ -0,0 +1,33 @@
+/**
+  This class invokes the configuration factory with static initialization,
+  as defined in section 4.1 of the "Programmatic Configuration with Log4j 2"
+**/
+package com.baeldung.log4j2.logtest;
+
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+import org.apache.logging.log4j.Marker;
+import org.apache.logging.log4j.MarkerManager;
+import org.apache.logging.log4j.core.config.ConfigurationFactory;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+import com.baeldung.log4j2.config.CustomConfigurationFactory;
+
+@RunWith(JUnit4.class)
+public class LogTest {
+    static {
+        CustomConfigurationFactory customConfigurationFactory = new CustomConfigurationFactory();
+        ConfigurationFactory.setConfigurationFactory(customConfigurationFactory);
+    }
+
+    @Test
+    public void simpleProgrammaticConfiguration() {
+        Logger logger = LogManager.getLogger();
+        Marker markerContent = MarkerManager.getMarker("FLOW");
+        logger.debug(markerContent, "Debug log message");
+        logger.info(markerContent, "Info log message");
+        logger.error(markerContent, "Error log message");
+    }
+}

logging-modules/log4j2-programmatic-configuration/simple-configuration-xml/pom.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0"?>
+<project
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
+	xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+	<modelVersion>4.0.0</modelVersion>
+	<parent>
+		<groupId>com.baeldung.log4j2</groupId>
+		<artifactId>log4j2-programmatic-configuration</artifactId>
+		<version>0.0.1-SNAPSHOT</version>
+	</parent>
+	<artifactId>simple-configuration-xml</artifactId>
+	<name>simple-configuration-xml</name>
+	<url>http://maven.apache.org</url>
+	<properties>
+		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+	</properties>
+</project>

logging-modules/log4j2-programmatic-configuration/simple-configuration-xml/src/main/resources/log4j2.xml

@@ -0,0 +1,32 @@
+<?xml version="1.0" ?>
+<Configuration>
+	<Appenders>
+		<Console name="Stdout">
+			<PatternLayout pattern="%d [%t] %-5level: %msg%n%throwable" />
+			<MarkerFilter onMatch="ACCEPT" onMismatch="DENY" marker="FLOW" />
+		</Console>
+		<RollingFile name="rolling" fileName="target/rolling.log"
+			filePattern="target/archive/rolling-%d{MM-dd-yy}.log.gz">
+			<PatternLayout pattern="%d [%t] %-5level: %msg%n%throwable" />
+			<Policies>
+				<CronTriggeringPolicy schedule="0 0 0 * * ?" />
+				<SizeBasedTriggeringPolicy size="100M" />
+			</Policies>
+		</RollingFile>
+		<File name="FileSystem" fileName="target/logging.log">
+			<PatternLayout pattern="%d [%t] %-5level: %msg%n%throwable" />
+		</File>
+	</Appenders>
+	<Loggers>
+		<Logger name="com" level="DEBUG" additivity="false">
+			<AppenderRef ref="Stdout" />
+			<AppenderRef ref="rolling" />
+			<AppenderRef ref="FileSystem" />
+		</Logger>
+		<Root level="ERROR" additivity="false">
+			<AppenderRef ref="Stdout" />
+			<AppenderRef ref="rolling" />
+			<AppenderRef ref="FileSystem" />
+		</Root>
+	</Loggers>
+</Configuration>

logging-modules/log4j2-programmatic-configuration/simple-configuration-xml/src/test/java/com/baeldung/log4j2/logtest/LogTest.java

@@ -0,0 +1,30 @@
+/**
+  This class loads the logging configuration from the xml defined in 
+  src/main/resources and uses the same configuration  generated through 
+  programmatic configuration as defined in simple-configuration example.
+**/
+
+package com.baeldung.log4j2.logtest;
+
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+import org.apache.logging.log4j.Marker;
+import org.apache.logging.log4j.MarkerManager;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+
+@RunWith(JUnit4.class)
+public class LogTest {
+
+    @Test
+    public void simpleProgrammaticConfiguration(){
+        Logger logger = LogManager.getLogger();
+        Marker markerContent = MarkerManager.getMarker("FLOW");
+        logger.debug(markerContent, "Debug log message");
+        logger.info(markerContent, "Info log message");
+        logger.error(markerContent, "Error log message");
+    }
+
+}

logging-modules/log4j2-programmatic-configuration/simple-configuration/pom.xml

@@ -0,0 +1,10 @@
+<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>
+	<parent>
+		<groupId>com.baeldung.log4j2</groupId>
+		<artifactId>log4j2-programmatic-configuration</artifactId>
+		<version>0.0.1-SNAPSHOT</version>
+	</parent>
+	<artifactId>simple-configuration</artifactId>
+</project>

logging-modules/log4j2-programmatic-configuration/simple-configuration/src/main/java/com/baeldung/log4j2/config/CustomConfigurationFactory.java

@@ -0,0 +1,94 @@
+/**
+  This class demonstrates how to build the components of 
+  the configuration factory, as described in Section 3 of 
+  "Programmatic Configuration with Log4j 2"
+**/
+
+package com.baeldung.log4j2.config;
+
+import java.io.IOException;
+import java.net.URI;
+
+import org.apache.logging.log4j.Level;
+import org.apache.logging.log4j.core.Filter;
+import org.apache.logging.log4j.core.LoggerContext;
+import org.apache.logging.log4j.core.config.Configuration;
+import org.apache.logging.log4j.core.config.ConfigurationFactory;
+import org.apache.logging.log4j.core.config.ConfigurationSource;
+import org.apache.logging.log4j.core.config.Order;
+import org.apache.logging.log4j.core.config.builder.api.AppenderComponentBuilder;
+import org.apache.logging.log4j.core.config.builder.api.ComponentBuilder;
+import org.apache.logging.log4j.core.config.builder.api.ConfigurationBuilder;
+import org.apache.logging.log4j.core.config.builder.api.FilterComponentBuilder;
+import org.apache.logging.log4j.core.config.builder.api.LayoutComponentBuilder;
+import org.apache.logging.log4j.core.config.builder.api.LoggerComponentBuilder;
+import org.apache.logging.log4j.core.config.builder.api.RootLoggerComponentBuilder;
+import org.apache.logging.log4j.core.config.builder.impl.BuiltConfiguration;
+import org.apache.logging.log4j.core.config.plugins.Plugin;
+
+@Plugin(name = "CustomConfigurationFactory", category = ConfigurationFactory.CATEGORY)
+@Order(50)
+public class CustomConfigurationFactory extends ConfigurationFactory {
+
+    static Configuration createConfiguration(final String name, ConfigurationBuilder<BuiltConfiguration> builder) {
+        AppenderComponentBuilder console = builder.newAppender("Stdout", "Console");
+        LayoutComponentBuilder layout = builder.newLayout("PatternLayout")
+            .addAttribute("pattern", "%d [%t] %-5level: %msg%n%throwable");
+        console.add(layout);
+        FilterComponentBuilder filter = builder.newFilter("MarkerFilter", Filter.Result.ACCEPT, Filter.Result.DENY);
+        filter.addAttribute("marker", "FLOW");
+        console.add(filter);
+        builder.add(console);
+        ComponentBuilder triggeringPolicies = builder.newComponent("Policies")
+            .addComponent(builder.newComponent("CronTriggeringPolicy")
+                .addAttribute("schedule", "0 0 0 * * ?"))
+            .addComponent(builder.newComponent("SizeBasedTriggeringPolicy")
+                .addAttribute("size", "100M"));
+        AppenderComponentBuilder rollingFile = builder.newAppender("rolling", "RollingFile");
+        rollingFile.addAttribute("fileName", "target/rolling.log");
+        rollingFile.addAttribute("filePattern", "target/archive/rolling-%d{MM-dd-yy}.log.gz");
+        rollingFile.add(layout);
+        rollingFile.addComponent(triggeringPolicies);
+        builder.add(rollingFile);
+        AppenderComponentBuilder file = builder.newAppender("FileSystem", "File");
+        file.addAttribute("fileName", "target/logging.log");
+        file.add(layout);
+        builder.add(file);
+        LoggerComponentBuilder logger = builder.newLogger("com", Level.DEBUG);
+        logger.add(builder.newAppenderRef("Stdout"));
+        logger.add(builder.newAppenderRef("rolling"));
+        logger.add(builder.newAppenderRef("FileSystem"));
+        logger.addAttribute("additivity", false);
+        builder.add(logger);
+        RootLoggerComponentBuilder rootLogger = builder.newRootLogger(Level.ERROR);
+        rootLogger.add(builder.newAppenderRef("Stdout"));
+        rootLogger.add(builder.newAppenderRef("rolling"));
+        // rootLogger.add(builder.newAppenderRef("syslogAppender"));
+        rootLogger.add(builder.newAppenderRef("FileSystem"));
+        rootLogger.addAttribute("additivity", false);
+        builder.add(rootLogger);
+        try {
+            builder.writeXmlConfiguration(System.out);
+        } catch (IOException e) {
+            // TODO Auto-generated catch block
+            e.printStackTrace();
+        }
+        return builder.build();
+
+    }
+
+    @Override
+    public Configuration getConfiguration(LoggerContext loggerContext, ConfigurationSource source) {
+        return getConfiguration(loggerContext, source.toString(), null);
+    }
+
+    public Configuration getConfiguration(final LoggerContext loggerContext, final String name, final URI configLocation) {
+        ConfigurationBuilder<BuiltConfiguration> builder = newConfigurationBuilder();
+        return createConfiguration(name, builder);
+    }
+
+    @Override
+    protected String[] getSupportedTypes() {
+        return new String[] { "*" };
+    }
+}

logging-modules/log4j2-programmatic-configuration/simple-configuration/src/test/java/com/baeldung/log4j2/logtest/LogTest.java

@@ -0,0 +1,22 @@
+/**
+  This class invokes the configuration factory through the run time property,
+  as defined in section 4.2 of the "Programmatic Configuration with Log4j 2"
+**/
+package com.baeldung.log4j2.logtest;
+
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+import org.apache.logging.log4j.Marker;
+import org.apache.logging.log4j.MarkerManager;
+import org.junit.Test;
+
+public class LogTest {
+    @Test
+    public void simpleProgrammaticConfiguration() {
+        Logger logger = LogManager.getLogger();
+        Marker markerContent = MarkerManager.getMarker("FLOW");
+        logger.debug(markerContent, "Debug log message");
+        logger.info(markerContent, "Info log message");
+        logger.error(markerContent, "Error log message");
+    }
+}

logging-modules/log4j2-programmatic-configuration/simple-configurator/pom.xml

@@ -0,0 +1,10 @@
+<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>
+	<parent>
+		<groupId>com.baeldung.log4j2</groupId>
+		<artifactId>log4j2-programmatic-configuration</artifactId>
+		<version>0.0.1-SNAPSHOT</version>
+	</parent>
+	<artifactId>simple-configurator</artifactId>
+</project>

logging-modules/log4j2-programmatic-configuration/simple-configurator/src/test/java/com/baeldung/log4j2/configure/LogTest.java

@@ -0,0 +1,40 @@
+/**
+  This class demonstrates how to use ConfigurationBuilderFactory directly, 
+  as described in Section 3 of "Programmatic Configuration with Log4j 2"
+**/
+
+package com.baeldung.log4j2.configure;
+
+import org.apache.logging.log4j.Level;
+import org.apache.logging.log4j.core.appender.ConsoleAppender;
+import org.apache.logging.log4j.core.config.Configurator;
+import org.apache.logging.log4j.core.config.builder.api.AppenderComponentBuilder;
+import org.apache.logging.log4j.core.config.builder.api.ConfigurationBuilder;
+import org.apache.logging.log4j.core.config.builder.api.ConfigurationBuilderFactory;
+import org.apache.logging.log4j.core.config.builder.impl.BuiltConfiguration;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+import com.baeldung.log4j2.logtest.LogPrinter;
+
+@RunWith(JUnit4.class)
+public class LogTest {
+    @Test
+    public void simpleProgrammaticConfiguration() {
+        ConfigurationBuilder<BuiltConfiguration> builder = ConfigurationBuilderFactory.newConfigurationBuilder();
+        AppenderComponentBuilder console = builder.newAppender("Stdout", "CONSOLE")
+            .addAttribute("target", ConsoleAppender.Target.SYSTEM_OUT);
+        console.add(builder.newLayout("PatternLayout")
+            .addAttribute("pattern", "%d [%t] %-5level: %msg%n%throwable"));
+        builder.add(console);
+        builder.add(builder.newLogger("com", Level.DEBUG)
+            .add(builder.newAppenderRef("Stdout"))
+            .addAttribute("additivity", false));
+        builder.add(builder.newRootLogger(Level.ERROR)
+            .add(builder.newAppenderRef("Stdout")));
+        Configurator.initialize(builder.build());
+        LogPrinter logPrinter = new LogPrinter();
+        logPrinter.printlog();
+    }
+}

logging-modules/log4j2-programmatic-configuration/simple-configurator/src/test/java/com/baeldung/log4j2/logtest/LogPrinter.java

@@ -0,0 +1,15 @@
+package com.baeldung.log4j2.logtest;
+
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+
+
+public class LogPrinter {
+    private Logger logger = LogManager.getLogger();
+
+    public void printlog() {
+        logger.debug("Debug log message");
+        logger.info("Info log message");
+        logger.error("Error log message");
+    }
+}

logging-modules/logback/src/test/java/com/baeldung/logback/LogbackTests.java

@@ -0,0 +1,89 @@
+package com.baeldung.logback;
+
+import ch.qos.logback.classic.Level;
+import org.junit.Test;
+
+import ch.qos.logback.classic.Logger;
+import org.slf4j.LoggerFactory;
+
+public class LogbackTests {
+
+    @Test
+    public void givenLogHierarchy_MessagesFiltered() {
+
+        ch.qos.logback.classic.Logger parentLogger =
+                (ch.qos.logback.classic.Logger) LoggerFactory.getLogger("com.baeldung.logback");
+
+        parentLogger.setLevel(Level.INFO);
+
+        Logger childlogger = (ch.qos.logback.classic.Logger)LoggerFactory.getLogger("com.baeldung.logback.tests");
+
+        parentLogger.warn("This message is logged because WARN > INFO.");
+
+        // This request is disabled, because DEBUG < INFO.
+        parentLogger.debug("This message is not logged because DEBUG < INFO.");
+
+        childlogger.info("INFO == INFO");
+
+        childlogger.debug("DEBUG < INFO");
+
+    }
+
+    @Test
+    public void givenRootLevel_MessagesFiltered() {
+
+        ch.qos.logback.classic.Logger logger =
+                (ch.qos.logback.classic.Logger) LoggerFactory.getLogger("com.baeldung.logback");
+
+        logger.debug("Hi there!");
+
+        Logger rootLogger = (ch.qos.logback.classic.Logger)LoggerFactory.getLogger(org.slf4j.Logger.ROOT_LOGGER_NAME);
+
+        logger.debug("This message is logged because DEBUG == DEBUG.");
+
+        rootLogger.setLevel(Level.ERROR);
+        logger.warn("This message is not logged because WARN < ERROR.");
+
+        logger.error("This is logged.");
+
+    }
+
+    @Test
+    public void givenParameters_ValuesLogged() {
+
+        Logger logger = (ch.qos.logback.classic.Logger) LoggerFactory.getLogger(LogbackTests.class);
+
+        String message = "This is a String";
+        Integer zero = 0;
+
+        try {
+            logger.debug("Logging message: {}", message);
+            logger.debug("Going to divide {} by {}", 42, zero);
+            int result = 42 / zero;
+        } catch (Exception e) {
+            logger.error("Error dividing {} by {} ", 42, zero, e);
+        }
+    }
+
+    @Test
+    public void givenConfig_MessageFiltered() {
+
+        Logger foobar = (ch.qos.logback.classic.Logger) LoggerFactory.getLogger("com.baeldung.foobar");
+        Logger logger = (ch.qos.logback.classic.Logger) LoggerFactory.getLogger("com.baeldung.logback");
+        Logger testslogger = (ch.qos.logback.classic.Logger) LoggerFactory.getLogger("com.baeldung.logback.tests");
+
+        foobar.debug("This is logged from foobar");
+        logger.debug("This is not logged from logger");
+        logger.info("This is logged from logger");
+        testslogger.info("This is not logged from tests");
+        testslogger.warn("This is logged from tests");
+
+
+    }
+
+
+
+
+
+
+}

logging-modules/logback/src/test/resources/logback-guide.xml

@@ -0,0 +1,32 @@
+<configuration debug="true">
+
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <!-- encoders are assigned the type
+             ch.qos.logback.classic.encoder.PatternLayoutEncoder by default -->
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
+        </encoder>
+    </appender>
+
+    <appender name="FILE" class="ch.qos.logback.core.FileAppender">
+        <file>tests.log</file>
+        <append>true</append>
+        <!-- set immediateFlush to false for much higher logging throughput -->
+        <immediateFlush>true</immediateFlush>
+        <!-- encoders are assigned the type
+             ch.qos.logback.classic.encoder.PatternLayoutEncoder by default -->
+        <encoder>
+            <pattern>%-4relative [%thread] %-5level %logger{35} - %msg%n</pattern>
+        </encoder>
+    </appender>
+
+
+    <root level="debug">
+        <appender-ref ref="STDOUT" />
+    </root>
+    <logger name="com.baeldung.logback" level="INFO" />
+    <logger name="com.baeldung.logback.tests" level="WARN">
+        <appender-ref ref="FILE" />
+    </logger>
+
+</configuration>

parent-boot-2/README.md

@@ -0,0 +1 @@
+## Relevant articles:

parent-boot-2/pom.xml

@@ -0,0 +1,120 @@
+<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</groupId>
+    <artifactId>parent-boot-2</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <packaging>pom</packaging>
+    <name>Parent Boot 2</name>
+    <description>Parent for all spring boot 2 modules</description>
+
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>2.0.1.RELEASE</version>
+        <relativePath/>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>io.rest-assured</groupId>
+            <artifactId>rest-assured</artifactId>
+            <version>${rest-assured.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <version>${maven-surefire-plugin.version}</version>
+                <configuration>
+                    <forkCount>3</forkCount>
+                    <reuseForks>true</reuseForks>
+                    <excludes>
+                        <exclude>**/*IntegrationTest.java</exclude>
+                        <exclude>**/*LongRunningUnitTest.java</exclude>
+                        <exclude>**/*ManualTest.java</exclude>
+                        <exclude>**/*LiveTest.java</exclude>
+                    </excludes>
+                </configuration>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>${maven-compiler-plugin.version}</version>
+                <configuration>
+                    <source>${maven.compiler.source}</source>
+                    <target>${maven.compiler.target}</target>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+    <profiles>
+        <profile>
+            <id>integration</id>
+            <build>
+                <plugins>
+                    <plugin>
+                        <groupId>org.apache.maven.plugins</groupId>
+                        <artifactId>maven-surefire-plugin</artifactId>
+                        <executions>
+                            <execution>
+                                <phase>integration-test</phase>
+                                <goals>
+                                    <goal>test</goal>
+                                </goals>
+                                <configuration>
+                                    <excludes>
+                                        <exclude>**/*ManualTest.java</exclude>
+                                        <exclude>**/*LiveTest.java</exclude>
+                                        <exclude>**/AutoconfigurationTest.java</exclude>
+                                        <exclude>**/*UnitTest.java</exclude>
+                                    </excludes>
+                                    <includes>
+                                        <include>**/*IntegrationTest.java</include>
+                                        <include>*/EthControllerTestOne.java</include>
+                                        <include>**/*IntTest.java</include>
+                                        <include>**/*EntryPointsTest.java</include>
+                                    </includes>
+                                </configuration>
+                            </execution>
+                        </executions>
+                        <configuration>
+                            <systemPropertyVariables>
+                                <test.mime>json</test.mime>
+                            </systemPropertyVariables>
+                        </configuration>
+                    </plugin>
+                </plugins>
+            </build>
+        </profile>
+    </profiles>
+
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
+        <java.version>1.8</java.version>
+        <rest-assured.version>3.1.0</rest-assured.version>
+        <!-- plugins -->
+        <maven.compiler.source>1.8</maven.compiler.source>
+        <maven.compiler.target>1.8</maven.compiler.target>
+    </properties>
+
+</project>

parent-java/README.md

@@ -0,0 +1 @@
+## Relevant articles:

parent-java/pom.xml

@@ -0,0 +1,30 @@
+<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</groupId>
+    <artifactId>parent-java</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <packaging>pom</packaging>
+    <name>parent-java</name>
+    <description>Parent for all java modules</description>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-modules</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+    </parent>
+
+    <dependencies>
+        <!-- utils -->
+        <dependency>
+            <groupId>com.google.guava</groupId>
+            <artifactId>guava</artifactId>
+            <version>${guava.version}</version>
+        </dependency>
+    </dependencies>
+
+    <properties>
+        <guava.version>22.0</guava.version>
+    </properties>
+
+</project>

parent-spring/README.md

@@ -0,0 +1 @@
+## Relevant articles:

parent-spring/pom.xml

@@ -0,0 +1,36 @@
+<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</groupId>
+    <artifactId>parent-spring</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <packaging>pom</packaging>
+    <name>parent-spring</name>
+    <description>Parent for all spring core modules</description>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-modules</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-core</artifactId>
+            <version>${spring.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-engine</artifactId>
+            <version>${junit.jupiter.version}</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <properties>
+        <spring.version>4.3.6.RELEASE</spring.version>
+        <junit.jupiter.version>5.0.2</junit.jupiter.version>
+    </properties>
+
+</project>

patterns/behavioral-patterns/pom.xml

@@ -19,6 +19,18 @@
             <version>4.12</version>
             <scope>test</scope>
         </dependency>
+	<dependency>
+            <groupId>org.hamcrest</groupId>
+            <artifactId>hamcrest-core</artifactId>
+            <version>1.3</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.assertj</groupId>
+            <artifactId>assertj-core</artifactId>
+            <version>3.8.0</version>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

patterns/behavioral-patterns/src/main/java/com/baeldung/pattern/command/client/TextFileApplication.java

@@ -0,0 +1,19 @@
+package com.baeldung.pattern.command.client;
+
+import com.baeldung.pattern.command.command.OpenTextFileOperation;
+import com.baeldung.pattern.command.command.SaveTextFileOperation;
+import com.baeldung.pattern.command.command.TextFileOperation;
+import com.baeldung.pattern.command.invoker.TextFileOperationExecutor;
+import com.baeldung.pattern.command.receiver.TextFile;
+
+public class TextFileApplication {
+    
+    public static void main(String[] args) {
+        
+        TextFileOperation openTextFileOperation = new OpenTextFileOperation(new TextFile("file1.txt"));
+        TextFileOperation saveTextFileOperation = new SaveTextFileOperation(new TextFile("file2.txt"));
+        TextFileOperationExecutor textFileOperationExecutor = new TextFileOperationExecutor();
+        System.out.println(textFileOperationExecutor.executeOperation(openTextFileOperation));
+        System.out.println(textFileOperationExecutor.executeOperation(saveTextFileOperation));
+    }   
+}

patterns/behavioral-patterns/src/main/java/com/baeldung/pattern/command/command/OpenTextFileOperation.java

@@ -0,0 +1,17 @@
+package com.baeldung.pattern.command.command;
+
+import com.baeldung.pattern.command.receiver.TextFile;
+
+public class OpenTextFileOperation implements TextFileOperation {
+
+    private final TextFile textFile;
+    
+    public OpenTextFileOperation(TextFile textFile) {
+        this.textFile = textFile;
+    }
+    
+    @Override
+    public String execute() {
+        return textFile.open();
+    }
+}

patterns/behavioral-patterns/src/main/java/com/baeldung/pattern/command/command/SaveTextFileOperation.java

@@ -0,0 +1,17 @@
+package com.baeldung.pattern.command.command;
+
+import com.baeldung.pattern.command.receiver.TextFile;
+
+public class SaveTextFileOperation implements TextFileOperation {
+    
+    private final TextFile textFile;
+    
+    public SaveTextFileOperation(TextFile textFile) {
+        this.textFile = textFile;
+    }
+    
+    @Override
+    public String execute() {
+        return textFile.save();
+    }
+}

patterns/behavioral-patterns/src/main/java/com/baeldung/pattern/command/command/TextFileOperation.java

@@ -0,0 +1,8 @@
+package com.baeldung.pattern.command.command;
+
+@FunctionalInterface
+public interface TextFileOperation {
+    
+    String execute();
+    
+}

patterns/behavioral-patterns/src/main/java/com/baeldung/pattern/command/invoker/TextFileOperationExecutor.java

@@ -0,0 +1,15 @@
+package com.baeldung.pattern.command.invoker;
+
+import com.baeldung.pattern.command.command.TextFileOperation;
+import java.util.ArrayList;
+import java.util.List;
+
+public class TextFileOperationExecutor {
+    
+    private final List<TextFileOperation> textFileOperations = new ArrayList<>();
+    
+    public String executeOperation(TextFileOperation textFileOperation) {
+        textFileOperations.add(textFileOperation);
+        return textFileOperation.execute();
+    }
+}

patterns/behavioral-patterns/src/main/java/com/baeldung/pattern/command/receiver/TextFile.java

@@ -0,0 +1,34 @@
+package com.baeldung.pattern.command.receiver;
+
+public class TextFile {
+    
+    private final String name;
+    
+    public TextFile(String name) {
+        this.name = name;
+    }
+    
+    public String open() {
+        return "Opening file " + name;
+    }
+    
+    public String read() {  
+        return "Reading file " + name;
+    }
+    
+    public String write() {  
+        return "Writing to file " + name;
+    }
+    
+    public String save() {  
+        return "Saving file " + name;
+    }
+    
+    public String copy() {  
+        return "Copying file " + name;
+    }
+    
+    public String paste() {  
+        return "Pasting file " + name;
+    }
+}

patterns/behavioral-patterns/src/test/java/com/baeldung/pattern/command/test/OpenTextFileOperationUnitTest.java

@@ -0,0 +1,16 @@
+package com.baeldung.pattern.command.test;
+
+import com.baeldung.pattern.command.command.OpenTextFileOperation;
+import com.baeldung.pattern.command.command.TextFileOperation;
+import com.baeldung.pattern.command.receiver.TextFile;
+import org.junit.Test;
+import static org.assertj.core.api.Assertions.*;
+
+public class OpenTextFileOperationUnitTest {
+    
+    @Test
+    public void givenOpenTextFileOperationIntance_whenCalledExecuteMethod_thenOneAssertion() {
+        TextFileOperation openTextFileOperation = new OpenTextFileOperation(new TextFile("file1.txt"));
+        assertThat(openTextFileOperation.execute()).isEqualTo("Opening file file1.txt");
+    }
+}

patterns/behavioral-patterns/src/test/java/com/baeldung/pattern/command/test/SaveTextFileOperationUnitTest.java

@@ -0,0 +1,16 @@
+package com.baeldung.pattern.command.test;
+
+import com.baeldung.pattern.command.command.SaveTextFileOperation;
+import com.baeldung.pattern.command.command.TextFileOperation;
+import com.baeldung.pattern.command.receiver.TextFile;
+import org.junit.Test;
+import static org.assertj.core.api.Assertions.*;
+
+public class SaveTextFileOperationUnitTest {
+    
+    @Test
+    public void givenSaveTextFileOperationIntance_whenCalledExecuteMethod_thenOneAssertion() {
+        TextFileOperation openTextFileOperation = new SaveTextFileOperation(new TextFile("file1.txt"));
+        assertThat(openTextFileOperation.execute()).isEqualTo("Saving file file1.txt");
+    }
+}

patterns/behavioral-patterns/src/test/java/com/baeldung/pattern/command/test/TextFileOperationExecutorUnitTest.java

@@ -0,0 +1,68 @@
+package com.baeldung.pattern.command.test;
+
+import com.baeldung.pattern.command.command.OpenTextFileOperation;
+import com.baeldung.pattern.command.command.SaveTextFileOperation;
+import com.baeldung.pattern.command.command.TextFileOperation;
+import com.baeldung.pattern.command.invoker.TextFileOperationExecutor;
+import com.baeldung.pattern.command.receiver.TextFile;
+import java.util.function.Function;
+import org.junit.Test;
+import static org.assertj.core.api.Assertions.*;
+import org.junit.BeforeClass;
+
+public class TextFileOperationExecutorUnitTest {
+    
+    private static TextFileOperationExecutor textFileOperationExecutor;
+    
+    
+    @BeforeClass
+    public static void setUpTextFileOperationExecutor() {
+        textFileOperationExecutor = new TextFileOperationExecutor();
+    }
+    
+    @Test
+    public void givenTextFileOPerationExecutorInstance_whenCalledexecuteOperationWithOpenTextOperation_thenOneAssertion() {
+        TextFileOperation textFileOperation = new OpenTextFileOperation(new TextFile("file1.txt"));
+        assertThat(textFileOperationExecutor.executeOperation(textFileOperation)).isEqualTo("Opening file file1.txt");
+    }
+    
+    @Test
+    public void givenTextFileOPerationExecutorInstance_whenCalledexecuteOperationWithSaveTextOperation_thenOneAssertion() {
+        TextFileOperation textFileOperation = new SaveTextFileOperation(new TextFile("file1.txt"));
+        assertThat(textFileOperationExecutor.executeOperation(textFileOperation)).isEqualTo("Saving file file1.txt");
+    }
+    
+    @Test
+    public void givenTextFileOperationExecutorInstance_whenCalledexecuteOperationWithTextFileOpenLambda_thenOneAssertion() {
+        assertThat(textFileOperationExecutor.executeOperation(() -> {return "Opening file file1.txt";})).isEqualTo("Opening file file1.txt");
+    }
+    
+    @Test
+    public void givenTextFileOperationExecutorInstance_whenCalledexecuteOperationWithTextFileSaveLambda_thenOneAssertion() {
+        assertThat(textFileOperationExecutor.executeOperation(() -> {return "Saving file file1.txt";})).isEqualTo("Saving file file1.txt");
+    }
+    
+    @Test
+    public void givenTextFileOperationExecutorInstance_whenCalledexecuteOperationWithTextFileOpenMethodReferenceOfExistingObject_thenOneAssertion() {
+        TextFile textFile = new TextFile("file1.txt");
+        assertThat(textFileOperationExecutor.executeOperation(textFile::open)).isEqualTo("Opening file file1.txt");
+    }
+    
+    @Test
+    public void givenTextFileOperationExecutorInstance_whenCalledexecuteOperationWithTextFileSaveMethodReferenceOfExistingObject_thenOneAssertion() {
+        TextFile textFile = new TextFile("file1.txt");
+        assertThat(textFileOperationExecutor.executeOperation(textFile::save)).isEqualTo("Saving file file1.txt");
+    }
+    
+    @Test
+    public void givenOpenTextFileOperationExecuteMethodReference_whenCalledApplyMethod_thenOneAssertion() {
+        Function<OpenTextFileOperation, String> executeMethodReference = OpenTextFileOperation::execute;
+        assertThat(executeMethodReference.apply(new OpenTextFileOperation(new TextFile("file1.txt")))).isEqualTo("Opening file file1.txt"); 
+    }
+    
+    @Test
+    public void givenSaveTextFileOperationExecuteMethodReference_whenCalledApplyMethod_thenOneAssertion() {
+        Function<SaveTextFileOperation, String> executeMethodReference = SaveTextFileOperation::execute;
+        assertThat(executeMethodReference.apply(new SaveTextFileOperation(new TextFile("file1.txt")))).isEqualTo("Saving file file1.txt"); 
+    }
+}

patterns/behavioral-patterns/src/test/java/com/baeldung/pattern/command/test/TextFileUnitTest.java

@@ -0,0 +1,42 @@
+package com.baeldung.pattern.command.test;
+
+import com.baeldung.pattern.command.receiver.TextFile;
+import org.junit.Test;
+import static org.assertj.core.api.Assertions.*;
+import org.junit.BeforeClass;
+
+public class TextFileUnitTest {
+    
+    private static TextFile textFile;
+    
+    
+    @BeforeClass
+    public static void setUpTextFileInstance() {
+        textFile = new TextFile("file1.txt");
+    }
+    
+    @Test
+    public void givenTextFileInstance_whenCalledopenMethod_thenOneAssertion() {
+        assertThat(textFile.open()).isEqualTo("Opening file file1.txt");
+    }
+    
+    @Test
+    public void givenTextFileInstance_whenCalledwriteMethod_thenOneAssertion() {
+        assertThat(textFile.write()).isEqualTo("Writing to file file1.txt");
+    }
+    
+    @Test
+    public void givenTextFileInstance_whenCalledsaveMethod_thenOneAssertion() {
+        assertThat(textFile.save()).isEqualTo("Saving file file1.txt");
+    }
+    
+    @Test
+    public void givenTextFileInstance_whenCalledcopyMethod_thenOneAssertion() {
+        assertThat(textFile.copy()).isEqualTo("Copying file file1.txt");
+    }
+    
+    @Test
+    public void givenTextFileInstance_whenCalledpasteMethod_thenOneAssertion() {
+        assertThat(textFile.paste()).isEqualTo("Pasting file file1.txt");
+    }
+}

performance-tests/pom.xml

@@ -0,0 +1,79 @@
+<?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">
+    <parent>
+        <artifactId>parent-modules</artifactId>
+        <groupId>com.baeldung</groupId>
+        <version>1.0.0-SNAPSHOT</version>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+    <artifactId>performancetests</artifactId>
+
+    <dependencies>
+        <dependency>
+            <groupId>ma.glasnost.orika</groupId>
+            <artifactId>orika-core</artifactId>
+            <version>1.5.2</version>
+        </dependency>
+        <dependency>
+            <groupId>net.sf.dozer</groupId>
+            <artifactId>dozer</artifactId>
+            <version>5.5.1</version>
+        </dependency>
+        <dependency>
+            <groupId>io.craftsman</groupId>
+            <artifactId>dozer-jdk8-support</artifactId>
+            <version>1.0.2</version>
+        </dependency>
+        <dependency>
+            <groupId>org.mapstruct</groupId>
+            <artifactId>mapstruct-jdk8</artifactId>
+            <version>1.2.0.Final</version>
+        </dependency>
+        <dependency>
+            <groupId>org.modelmapper</groupId>
+            <artifactId>modelmapper</artifactId>
+            <version>1.1.0</version>
+        </dependency>
+        <dependency>
+            <groupId>com.googlecode.jmapper-framework</groupId>
+            <artifactId>jmapper-core</artifactId>
+            <version>1.6.0.1</version>
+        </dependency>
+        <dependency>
+            <groupId>org.openjdk.jmh</groupId>
+            <artifactId>jmh-core</artifactId>
+            <version>1.20</version>
+        </dependency>
+        <dependency>
+            <groupId>org.openjdk.jmh</groupId>
+            <artifactId>jmh-generator-annprocess</artifactId>
+            <version>1.20</version>
+        </dependency>
+    </dependencies>
+    <build>
+        <pluginManagement>
+            <plugins>
+                <plugin>
+                    <groupId>org.apache.maven.plugins</groupId>
+                    <artifactId>maven-compiler-plugin</artifactId>
+                    <version>3.5.1</version>
+                    <configuration>
+                        <source>1.8</source>
+                        <target>1.8</target>
+                        <annotationProcessorPaths>
+                            <path>
+                                <groupId>org.mapstruct</groupId>
+                                <artifactId>mapstruct-processor</artifactId>
+                                <version>1.2.0.Final</version>
+                            </path>
+                        </annotationProcessorPaths>
+                    </configuration>
+                </plugin>
+            </plugins>
+        </pluginManagement>
+    </build>
+
+</project>

performance-tests/src/main/java/com/baeldung/performancetests/Converter.java

@@ -0,0 +1,11 @@
+package com.baeldung.performancetests;
+
+import com.baeldung.performancetests.model.destination.DestinationCode;
+import com.baeldung.performancetests.model.source.SourceCode;
+import com.baeldung.performancetests.model.source.SourceOrder;
+import com.baeldung.performancetests.model.destination.Order;
+
+public interface Converter {
+    Order convert(SourceOrder sourceOrder);
+    DestinationCode convert(SourceCode sourceCode);
+}

performance-tests/src/main/java/com/baeldung/performancetests/dozer/DozerConverter.java

@@ -0,0 +1,29 @@
+package com.baeldung.performancetests.dozer;
+
+import com.baeldung.performancetests.Converter;
+import com.baeldung.performancetests.model.destination.DestinationCode;
+import com.baeldung.performancetests.model.source.SourceCode;
+import com.baeldung.performancetests.model.source.SourceOrder;
+import com.baeldung.performancetests.model.destination.Order;
+import org.dozer.DozerBeanMapper;
+import org.dozer.Mapper;
+
+    public class DozerConverter implements Converter {
+        private final Mapper mapper;
+
+        public DozerConverter() {
+            DozerBeanMapper mapper = new DozerBeanMapper();
+            mapper.addMapping(DozerConverter.class.getResourceAsStream("/dozer-mapping.xml"));
+            this.mapper = mapper;
+        }
+
+        @Override
+        public Order convert(SourceOrder sourceOrder) {
+            return mapper.map(sourceOrder,Order.class);
+        }
+
+        @Override
+        public DestinationCode convert(SourceCode sourceCode) {
+            return mapper.map(sourceCode, DestinationCode.class);
+        }
+    }

performance-tests/src/main/java/com/baeldung/performancetests/jmapper/JMapperConverter.java

@@ -0,0 +1,30 @@
+package com.baeldung.performancetests.jmapper;
+
+import com.baeldung.performancetests.Converter;
+import com.baeldung.performancetests.model.destination.DestinationCode;
+import com.baeldung.performancetests.model.source.SourceCode;
+import com.baeldung.performancetests.model.source.SourceOrder;
+import com.baeldung.performancetests.model.destination.Order;
+import com.googlecode.jmapper.JMapper;
+import com.googlecode.jmapper.api.JMapperAPI;
+
+public class JMapperConverter implements Converter {
+    JMapper realLifeMapper;
+    JMapper simpleMapper;
+    public JMapperConverter() {
+        JMapperAPI api = new JMapperAPI().add(JMapperAPI.mappedClass(Order.class));
+        realLifeMapper = new JMapper(Order.class, SourceOrder.class, api);
+        JMapperAPI simpleApi = new JMapperAPI().add(JMapperAPI.mappedClass(DestinationCode.class));
+        simpleMapper = new JMapper(DestinationCode.class, SourceCode.class, simpleApi);
+    }
+
+    @Override
+    public Order convert(SourceOrder sourceOrder) {
+        return (Order) realLifeMapper.getDestination(sourceOrder);
+    }
+
+    @Override
+    public DestinationCode convert(SourceCode sourceCode) {
+        return (DestinationCode) simpleMapper.getDestination(sourceCode);
+    }
+}

performance-tests/src/main/java/com/baeldung/performancetests/mapstruct/MapStructConverter.java

@@ -0,0 +1,22 @@
+package com.baeldung.performancetests.mapstruct;
+
+import com.baeldung.performancetests.Converter;
+import com.baeldung.performancetests.model.destination.DestinationCode;
+import com.baeldung.performancetests.model.source.SourceCode;
+import com.baeldung.performancetests.model.source.SourceOrder;
+import com.baeldung.performancetests.model.destination.Order;
+import org.mapstruct.Mapper;
+import org.mapstruct.Mapping;
+import org.mapstruct.factory.Mappers;
+
+@Mapper
+public interface MapStructConverter extends Converter {
+    MapStructConverter MAPPER = Mappers.getMapper(MapStructConverter.class);
+
+    @Mapping(source = "status", target = "orderStatus")
+    @Override
+    Order convert(SourceOrder sourceOrder);
+
+    @Override
+    DestinationCode convert(SourceCode sourceCode);
+}

performance-tests/src/main/java/com/baeldung/performancetests/model/destination/AccountStatus.java

@@ -0,0 +1,5 @@
+package com.baeldung.performancetests.model.destination;
+
+public enum AccountStatus {
+    ACTIVE, NOT_ACTIVE, BANNED
+}

performance-tests/src/main/java/com/baeldung/performancetests/model/destination/Address.java

@@ -0,0 +1,83 @@
+package com.baeldung.performancetests.model.destination;
+
+import com.googlecode.jmapper.annotations.JGlobalMap;
+
+import java.util.Objects;
+
+@JGlobalMap
+public class Address {
+    private String street;
+    private String city;
+    private String postalCode;
+
+    public Address() {
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null) return false;
+        if(o.getClass() == com.baeldung.performancetests.model.source.Address.class) {
+            com.baeldung.performancetests.model.source.Address address =
+              (com.baeldung.performancetests.model.source.Address) o;
+            return Objects.equals(street, address.getStreet()) &&
+              Objects.equals(city, address.getCity()) &&
+              Objects.equals(postalCode, address.getPostalCode()) &&
+              Objects.equals(country, address.getCountry());
+        }
+        if(o.getClass() != getClass()) return false;
+        Address address = (Address) o;
+        return Objects.equals(street, address.street) &&
+          Objects.equals(city, address.city) &&
+          Objects.equals(postalCode, address.postalCode) &&
+          Objects.equals(country, address.country);
+    }
+
+    @Override
+    public int hashCode() {
+
+        return Objects.hash(street, city, postalCode, country);
+    }
+
+    private String country;
+
+    public String getStreet() {
+        return street;
+    }
+
+    public void setStreet(String street) {
+        this.street = street;
+    }
+
+    public String getCity() {
+        return city;
+    }
+
+    public void setCity(String city) {
+        this.city = city;
+    }
+
+    public String getPostalCode() {
+        return postalCode;
+    }
+
+    public void setPostalCode(String postalCode) {
+        this.postalCode = postalCode;
+    }
+
+    public String getCountry() {
+        return country;
+    }
+
+    public void setCountry(String country) {
+        this.country = country;
+    }
+
+    public Address(String street, String city, String postalCode, String country) {
+
+        this.street = street;
+        this.city = city;
+        this.postalCode = postalCode;
+        this.country = country;
+    }
+}

performance-tests/src/main/java/com/baeldung/performancetests/model/destination/DeliveryData.java

@@ -0,0 +1,83 @@
+package com.baeldung.performancetests.model.destination;
+
+import com.googlecode.jmapper.annotations.JGlobalMap;
+import com.googlecode.jmapper.annotations.JMapAccessor;
+
+import java.util.Objects;
+
+@JGlobalMap
+public class DeliveryData {
+    private Address deliveryAddress;
+    @JMapAccessor(get = "isPrePaid", set = "setPrePaid")
+    private boolean isPrePaid;
+    private String trackingCode;
+    private int expectedDeliveryTimeInDays;
+
+    public DeliveryData() {
+    }
+
+    public Address getDeliveryAddress() {
+        return deliveryAddress;
+    }
+
+    public void setDeliveryAddress(Address deliveryAddress) {
+        this.deliveryAddress = deliveryAddress;
+    }
+
+    public boolean isPrePaid() {
+        return isPrePaid;
+    }
+
+    public void setPrePaid(boolean prePaid) {
+        isPrePaid = prePaid;
+    }
+
+    public String getTrackingCode() {
+        return trackingCode;
+    }
+
+    public void setTrackingCode(String trackingCode) {
+        this.trackingCode = trackingCode;
+    }
+
+    public int getExpectedDeliveryTimeInDays() {
+        return expectedDeliveryTimeInDays;
+    }
+
+    public void setExpectedDeliveryTimeInDays(int expectedDeliveryTimeInDays) {
+        this.expectedDeliveryTimeInDays = expectedDeliveryTimeInDays;
+    }
+
+    public DeliveryData(Address deliveryAddress, boolean isPrePaid, String trackingCode, int expectedDeliveryTimeInDays) {
+        this.deliveryAddress = deliveryAddress;
+        this.isPrePaid = isPrePaid;
+        this.trackingCode = trackingCode;
+        this.expectedDeliveryTimeInDays = expectedDeliveryTimeInDays;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null) return false;
+        if(o.getClass() == com.baeldung.performancetests.model.source.DeliveryData.class) {
+            com.baeldung.performancetests.model.source.DeliveryData deliveryData =
+              (com.baeldung.performancetests.model.source.DeliveryData) o;
+            return isPrePaid == deliveryData.isPrePaid() &&
+              expectedDeliveryTimeInDays == deliveryData.getExpectedDeliveryTimeInDays() &&
+              Objects.equals(deliveryAddress, deliveryData.getDeliveryAddress()) &&
+              Objects.equals(trackingCode, deliveryData.getTrackingCode());
+        }
+        if (o.getClass() != getClass()) return false;
+        DeliveryData that = (DeliveryData) o;
+        return isPrePaid == that.isPrePaid &&
+          expectedDeliveryTimeInDays == that.expectedDeliveryTimeInDays &&
+          Objects.equals(deliveryAddress, that.deliveryAddress) &&
+          Objects.equals(trackingCode, that.trackingCode);
+    }
+
+    @Override
+    public int hashCode() {
+
+        return Objects.hash(deliveryAddress, isPrePaid, trackingCode, expectedDeliveryTimeInDays);
+    }
+}

performance-tests/src/main/java/com/baeldung/performancetests/model/destination/DestinationCode.java

@@ -0,0 +1,23 @@
+package com.baeldung.performancetests.model.destination;
+
+import com.googlecode.jmapper.annotations.JMap;
+
+public class DestinationCode {
+    @JMap
+    String code;
+
+    public DestinationCode(String code) {
+        this.code = code;
+    }
+
+    public DestinationCode() {
+    }
+
+    public String getCode() {
+        return code;
+    }
+
+    public void setCode(String code) {
+        this.code = code;
+    }
+}

performance-tests/src/main/java/com/baeldung/performancetests/model/destination/Discount.java

@@ -0,0 +1,70 @@
+package com.baeldung.performancetests.model.destination;
+
+import com.google.common.base.Objects;
+import com.googlecode.jmapper.annotations.JGlobalMap;
+
+import java.math.BigDecimal;
+
+@JGlobalMap
+public class Discount {
+    private String startTime;
+    private String endTime;
+    private BigDecimal discountPrice;
+
+    public Discount() {
+    }
+
+    public String getStartTime() {
+        return startTime;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null) return false;
+        if (o.getClass() == com.baeldung.performancetests.model.source.Discount.class) {
+            com.baeldung.performancetests.model.source.Discount discount =
+              (com.baeldung.performancetests.model.source.Discount) o;
+            return Objects.equal(startTime, discount.getStartTime()) &&
+              Objects.equal(endTime, discount.getEndTime()) &&
+              Objects.equal(discountPrice, discount.getDiscountPrice());
+        }
+        if(o.getClass() != getClass()) return false;
+        Discount discount = (Discount) o;
+        return Objects.equal(startTime, discount.startTime) &&
+                Objects.equal(endTime, discount.endTime) &&
+                Objects.equal(discountPrice, discount.discountPrice);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hashCode(startTime, endTime, discountPrice);
+    }
+
+    public void setStartTime(String startTime) {
+        this.startTime = startTime;
+    }
+
+    public String getEndTime() {
+        return endTime;
+    }
+
+    public void setEndTime(String endTime) {
+        this.endTime = endTime;
+    }
+
+    public BigDecimal getDiscountPrice() {
+        return discountPrice;
+    }
+
+    public void setDiscountPrice(BigDecimal discountPrice) {
+        this.discountPrice = discountPrice;
+    }
+
+    public Discount(String startTime, String endTime, BigDecimal discountPrice) {
+
+        this.startTime = startTime;
+        this.endTime = endTime;
+        this.discountPrice = discountPrice;
+    }
+}

performance-tests/src/main/java/com/baeldung/performancetests/model/destination/Order.java

@@ -0,0 +1,210 @@
+package com.baeldung.performancetests.model.destination;
+
+import com.baeldung.performancetests.model.source.SourceOrder;
+import com.google.common.base.Objects;
+import com.googlecode.jmapper.annotations.JMap;
+import com.googlecode.jmapper.annotations.JMapConversion;
+
+import java.util.List;
+public class Order {
+    @JMap
+    private User orderingUser;
+    @JMap
+    private List<Product> orderedProducts;
+    @JMap("status")
+    private OrderStatus orderStatus;
+    @JMap
+    private String orderDate;
+    @JMap
+    private String orderFinishDate;
+    @JMap
+    private PaymentType paymentType;
+    @JMap
+    private Discount discount;
+    @JMap
+    private int orderId;
+    @JMap
+    private DeliveryData deliveryData;
+    @JMap
+    private Shop offeringShop;
+
+    public Order() {
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null) return false;
+        if (o.getClass() == SourceOrder.class) {
+            SourceOrder order =
+              (SourceOrder) o;
+            return Objects.equal(orderingUser, order.getOrderingUser()) &&
+                    Objects.equal(orderedProducts, order.getOrderedProducts()) &&
+                    orderStatus.ordinal() == order.getStatus().ordinal() &&
+                    Objects.equal(orderDate, order.getOrderDate()) &&
+                    Objects.equal(orderFinishDate, order.getOrderFinishDate()) &&
+                    paymentType.ordinal() == order.getPaymentType().ordinal() &&
+                    Objects.equal(discount, order.getDiscount()) &&
+                    Objects.equal(deliveryData, order.getDeliveryData());
+        }
+        if (o.getClass() != getClass()) return false;
+        Order order = (Order) o;
+        return Objects.equal(orderingUser, order.orderingUser) &&
+                Objects.equal(orderedProducts, order.orderedProducts) &&
+                orderStatus == order.orderStatus &&
+                Objects.equal(orderDate, order.orderDate) &&
+                Objects.equal(orderFinishDate, order.orderFinishDate) &&
+                paymentType == order.paymentType &&
+                Objects.equal(discount, order.discount) &&
+                Objects.equal(deliveryData, order.deliveryData);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hashCode(orderingUser, orderedProducts, orderStatus, orderDate, orderFinishDate, paymentType, discount, deliveryData);
+    }
+
+    public User getOrderingUser() {
+        return orderingUser;
+    }
+
+    public void setOrderingUser(User orderingUser) {
+        this.orderingUser = orderingUser;
+    }
+
+    public List<Product> getOrderedProducts() {
+        return orderedProducts;
+    }
+
+    public void setOrderedProducts(List<Product> orderedProducts) {
+        this.orderedProducts = orderedProducts;
+    }
+
+    public OrderStatus getOrderStatus() {
+        return orderStatus;
+    }
+
+    public void setOrderStatus(OrderStatus status) {
+        this.orderStatus = status;
+    }
+
+    public String getOrderDate() {
+        return orderDate;
+    }
+
+    public void setOrderDate(String orderDate) {
+        this.orderDate = orderDate;
+    }
+
+    public String getOrderFinishDate() {
+        return orderFinishDate;
+    }
+
+    public void setOrderFinishDate(String orderFinishDate) {
+        this.orderFinishDate = orderFinishDate;
+    }
+
+    public PaymentType getPaymentType() {
+        return paymentType;
+    }
+
+    public void setPaymentType(PaymentType paymentType) {
+        this.paymentType = paymentType;
+    }
+
+    public Discount getDiscount() {
+        return discount;
+    }
+
+    public void setDiscount(Discount discount) {
+        this.discount = discount;
+    }
+
+    public DeliveryData getDeliveryData() {
+        return deliveryData;
+    }
+
+    public void setDeliveryData(DeliveryData deliveryData) {
+        this.deliveryData = deliveryData;
+    }
+
+
+    public int getOrderId() {
+        return orderId;
+    }
+
+    public void setOrderId(int orderId) {
+        this.orderId = orderId;
+    }
+
+    public Order(User orderingUser, List<Product> orderedProducts, OrderStatus orderStatus, String orderDate, String orderFinishDate, PaymentType paymentType, Discount discount, int orderId, DeliveryData deliveryData, Shop offeringShop) {
+
+        this.orderingUser = orderingUser;
+        this.orderedProducts = orderedProducts;
+        this.orderStatus = orderStatus;
+        this.orderDate = orderDate;
+        this.orderFinishDate = orderFinishDate;
+        this.paymentType = paymentType;
+        this.discount = discount;
+        this.orderId = orderId;
+        this.deliveryData = deliveryData;
+        this.offeringShop = offeringShop;
+    }
+
+    public Shop getOfferingShop() {
+        return offeringShop;
+    }
+
+    public void setOfferingShop(Shop offeringShop) {
+        this.offeringShop = offeringShop;
+    }
+
+
+
+    @JMapConversion(from = "status", to = "orderStatus")
+    public OrderStatus conversion(com.baeldung.performancetests.model.source.OrderStatus status) {
+        OrderStatus orderStatus = null;
+        switch(status) {
+            case CREATED:
+                orderStatus = OrderStatus.CREATED;
+                break;
+            case FINISHED:
+                orderStatus = OrderStatus.FINISHED;
+                break;
+
+            case CONFIRMED:
+                orderStatus = OrderStatus.CONFIRMED;
+                break;
+
+            case COLLECTING:
+                orderStatus = OrderStatus.COLLECTING;
+                break;
+
+            case IN_TRANSPORT:
+                orderStatus = OrderStatus.IN_TRANSPORT;
+                break;
+        }
+        return orderStatus;
+    }
+
+    @JMapConversion(from = "paymentType", to = "paymentType")
+    public PaymentType conversion(com.baeldung.performancetests.model.source.PaymentType type) {
+        PaymentType paymentType = null;
+        switch(type) {
+            case CARD:
+                paymentType = PaymentType.CARD;
+                break;
+
+            case CASH:
+                paymentType = PaymentType.CASH;
+                break;
+
+            case TRANSFER:
+                paymentType = PaymentType.TRANSFER;
+                break;
+        }
+        return paymentType;
+    }
+
+
+}

performance-tests/src/main/java/com/baeldung/performancetests/model/destination/OrderStatus.java

@@ -0,0 +1,5 @@
+package com.baeldung.performancetests.model.destination;
+
+public enum  OrderStatus {
+    CREATED, CONFIRMED, COLLECTING, IN_TRANSPORT, FINISHED
+}

performance-tests/src/main/java/com/baeldung/performancetests/model/destination/PaymentType.java

@@ -0,0 +1,5 @@
+package com.baeldung.performancetests.model.destination;
+
+public enum PaymentType {
+    CASH, CARD, TRANSFER
+}

performance-tests/src/main/java/com/baeldung/performancetests/model/destination/Product.java

@@ -0,0 +1,107 @@
+package com.baeldung.performancetests.model.destination;
+
+import com.google.common.base.Objects;
+import com.googlecode.jmapper.annotations.JGlobalMap;
+
+import java.math.BigDecimal;
+
+@JGlobalMap
+public class Product {
+    private BigDecimal price;
+    private int quantity;
+
+    public Product() {
+    }
+
+    public BigDecimal getPrice() {
+        return price;
+    }
+
+    public void setPrice(BigDecimal price) {
+        this.price = price;
+    }
+
+    public int getQuantity() {
+        return quantity;
+    }
+
+    public void setQuantity(int quantity) {
+        this.quantity = quantity;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
+    public boolean isAvailable() {
+        return available;
+    }
+
+    public void setAvailable(boolean available) {
+        this.available = available;
+    }
+
+    public RefundPolicy getRefundPolicy() {
+        return refundPolicy;
+    }
+
+    public void setRefundPolicy(RefundPolicy refundPolicy) {
+        this.refundPolicy = refundPolicy;
+    }
+
+    private String name;
+
+    public Product(BigDecimal price, int quantity, String name, String description, boolean available, RefundPolicy refundPolicy) {
+        this.price = price;
+        this.quantity = quantity;
+        this.name = name;
+        this.description = description;
+        this.available = available;
+        this.refundPolicy = refundPolicy;
+    }
+
+    String description;
+    boolean available;
+    private RefundPolicy refundPolicy;
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null) return false;
+        if (o.getClass() == com.baeldung.performancetests.model.source.Product.class) {
+            com.baeldung.performancetests.model.source.Product product =
+              (com.baeldung.performancetests.model.source.Product) o;
+            return quantity == product.getQuantity() &&
+              available == product.isAvailable() &&
+              Objects.equal(price, product.getPrice()) &&
+              Objects.equal(name, product.getName()) &&
+              Objects.equal(description, product.getDescription()) &&
+              Objects.equal(refundPolicy, product.getRefundPolicy());
+        }
+        if(o.getClass() != getClass()) return false;
+        Product product = (Product) o;
+        return quantity == product.quantity &&
+          available == product.available &&
+          Objects.equal(price, product.price) &&
+          Objects.equal(name, product.name) &&
+          Objects.equal(description, product.description) &&
+          Objects.equal(refundPolicy, product.refundPolicy);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hashCode(price, quantity, name, description, available, refundPolicy);
+    }
+}

performance-tests/src/main/java/com/baeldung/performancetests/model/destination/RefundPolicy.java

@@ -0,0 +1,72 @@
+package com.baeldung.performancetests.model.destination;
+
+import com.google.common.base.Objects;
+import com.googlecode.jmapper.annotations.JGlobalMap;
+import com.googlecode.jmapper.annotations.JMapAccessor;
+
+import java.util.List;
+
+@JGlobalMap
+public class RefundPolicy {
+    @JMapAccessor(get = "isRefundable", set = "setRefundable")
+    private boolean isRefundable;
+    private int refundTimeInDays;
+
+    public RefundPolicy() {
+    }
+
+    public boolean isRefundable() {
+        return isRefundable;
+    }
+
+    public void setRefundable(boolean refundable) {
+        isRefundable = refundable;
+    }
+
+    public int getRefundTimeInDays() {
+        return refundTimeInDays;
+    }
+
+    public void setRefundTimeInDays(int refundTimeInDays) {
+        this.refundTimeInDays = refundTimeInDays;
+    }
+
+    public List<String> getNotes() {
+        return notes;
+    }
+
+    public void setNotes(List<String> notes) {
+        this.notes = notes;
+    }
+
+    public RefundPolicy(boolean isRefundable, int refundTimeInDays, List<String> notes) {
+
+        this.isRefundable = isRefundable;
+        this.refundTimeInDays = refundTimeInDays;
+        this.notes = notes;
+    }
+
+    private List<String> notes;
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null) return false;
+        if (o.getClass() == com.baeldung.performancetests.model.source.RefundPolicy.class) {
+            com.baeldung.performancetests.model.source.RefundPolicy that = (com.baeldung.performancetests.model.source.RefundPolicy) o;
+            return isRefundable == that.isRefundable() &&
+                    refundTimeInDays == that.getRefundTimeInDays() &&
+                    Objects.equal(notes, that.getNotes());
+        }
+        if (o.getClass() != getClass()) return false;
+        RefundPolicy that = (RefundPolicy) o;
+        return isRefundable == that.isRefundable &&
+                refundTimeInDays == that.refundTimeInDays &&
+                Objects.equal(notes, that.notes);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hashCode(isRefundable, refundTimeInDays, notes);
+    }
+}

performance-tests/src/main/java/com/baeldung/performancetests/model/destination/Review.java

@@ -0,0 +1,67 @@
+package com.baeldung.performancetests.model.destination;
+
+import com.baeldung.performancetests.model.source.User;
+import com.googlecode.jmapper.annotations.JGlobalMap;
+
+@JGlobalMap
+public class Review {
+
+    int shippingGrade;
+    int pricingGrade;
+    int serviceGrade;
+    User reviewingUser;
+    String note;
+
+    public int getShippingGrade() {
+        return shippingGrade;
+    }
+
+    public void setShippingGrade(int shippingGrade) {
+        this.shippingGrade = shippingGrade;
+    }
+
+    public int getPricingGrade() {
+        return pricingGrade;
+    }
+
+    public void setPricingGrade(int pricingGrade) {
+        this.pricingGrade = pricingGrade;
+    }
+
+    public int getServiceGrade() {
+        return serviceGrade;
+    }
+
+    public void setServiceGrade(int serviceGrade) {
+        this.serviceGrade = serviceGrade;
+    }
+
+    public User getReviewingUser() {
+        return reviewingUser;
+    }
+
+    public void setReviewingUser(User reviewingUser) {
+        this.reviewingUser = reviewingUser;
+    }
+
+    public String getNote() {
+        return note;
+    }
+
+    public void setNote(String note) {
+        this.note = note;
+    }
+
+    public Review() {
+
+    }
+
+    public Review(int shippingGrade, int pricingGrade, int serviceGrade, User reviewingUser, String note) {
+
+        this.shippingGrade = shippingGrade;
+        this.pricingGrade = pricingGrade;
+        this.serviceGrade = serviceGrade;
+        this.reviewingUser = reviewingUser;
+        this.note = note;
+    }
+}

performance-tests/src/main/java/com/baeldung/performancetests/model/destination/Shop.java

@@ -0,0 +1,57 @@
+package com.baeldung.performancetests.model.destination;
+
+import com.baeldung.performancetests.model.source.Address;
+import com.googlecode.jmapper.annotations.JGlobalMap;
+
+import java.util.List;
+@JGlobalMap
+public class Shop {
+
+    private String shopName;
+    private Address shopAddres;
+    private String shopUrl;
+    private List<Review> reviews;
+
+    public String getShopName() {
+        return shopName;
+    }
+
+    public void setShopName(String shopName) {
+        this.shopName = shopName;
+    }
+
+    public Address getShopAddres() {
+        return shopAddres;
+    }
+
+    public void setShopAddres(Address shopAddres) {
+        this.shopAddres = shopAddres;
+    }
+
+    public String  getShopUrl() {
+        return shopUrl;
+    }
+
+    public void setShopUrl(String shopUrl) {
+        this.shopUrl = shopUrl;
+    }
+
+    public Shop() {
+    }
+
+    public List<Review> getReviews() {
+        return reviews;
+    }
+
+    public void setReviews(List<Review> reviews) {
+        this.reviews = reviews;
+    }
+
+    public Shop(String shopName, Address shopAddres, String shopUrl, List<Review> reviews) {
+
+        this.shopName = shopName;
+        this.shopAddres = shopAddres;
+        this.shopUrl = shopUrl;
+        this.reviews = reviews;
+    }
+}

performance-tests/src/main/java/com/baeldung/performancetests/model/destination/User.java

@@ -0,0 +1,87 @@
+package com.baeldung.performancetests.model.destination;
+
+import com.google.common.base.Objects;
+import com.googlecode.jmapper.annotations.JGlobalMap;
+import com.googlecode.jmapper.annotations.JMapConversion;
+
+@JGlobalMap
+public class User {
+    private String username;
+    private String email;
+    private AccountStatus userAccountStatus;
+
+    public User(String username, String email, AccountStatus userAccountStatus) {
+        this.username = username;
+        this.email = email;
+        this.userAccountStatus = userAccountStatus;
+    }
+
+    public User() {
+    }
+
+    public String getUsername() {
+        return username;
+    }
+
+    public void setUsername(String username) {
+        this.username = username;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public void setEmail(String email) {
+        this.email = email;
+    }
+
+    public AccountStatus getUserAccountStatus() {
+        return userAccountStatus;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null) return false;
+        if (o.getClass() == com.baeldung.performancetests.model.source.User.class) {
+            com.baeldung.performancetests.model.source.User user =
+              (com.baeldung.performancetests.model.source.User) o;
+            return Objects.equal(username, user.getUsername()) &&
+                    Objects.equal(email, user.getEmail()) &&
+                    userAccountStatus.ordinal() == user.getUserAccountStatus().ordinal();
+        }
+        if (o.getClass() != getClass()) return false;
+        User user = (User) o;
+        return Objects.equal(username, user.username) &&
+          Objects.equal(email, user.email) &&
+          userAccountStatus == user.userAccountStatus;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hashCode(username, email, userAccountStatus);
+    }
+
+    public void setUserAccountStatus(AccountStatus userAccountStatus) {
+        this.userAccountStatus = userAccountStatus;
+    }
+
+
+    @JMapConversion(from = "userAccountStatus", to = "userAccountStatus")
+    public AccountStatus conversion(com.baeldung.performancetests.model.source.AccountStatus status) {
+        AccountStatus accountStatus = null;
+        switch(status) {
+            case ACTIVE:
+                accountStatus = AccountStatus.ACTIVE;
+                break;
+            case NOT_ACTIVE:
+                accountStatus = AccountStatus.NOT_ACTIVE;
+                break;
+
+            case BANNED:
+                accountStatus = AccountStatus.BANNED;
+                break;
+        }
+        return accountStatus;
+    }
+}

performance-tests/src/main/java/com/baeldung/performancetests/model/source/AccountStatus.java

@@ -0,0 +1,7 @@
+package com.baeldung.performancetests.model.source;
+
+import com.googlecode.jmapper.annotations.JGlobalMap;
+
+public enum AccountStatus {
+    ACTIVE, NOT_ACTIVE, BANNED
+}

performance-tests/src/main/java/com/baeldung/performancetests/model/source/Address.java

@@ -0,0 +1,54 @@
+package com.baeldung.performancetests.model.source;
+
+import com.googlecode.jmapper.annotations.JGlobalMap;
+
+public class Address {
+    private String street;
+    private String city;
+    private String postalCode;
+
+    public Address() {
+    }
+
+    private String country;
+
+    public String getStreet() {
+        return street;
+    }
+
+    public void setStreet(String street) {
+        this.street = street;
+    }
+
+    public String getCity() {
+        return city;
+    }
+
+    public void setCity(String city) {
+        this.city = city;
+    }
+
+    public String getPostalCode() {
+        return postalCode;
+    }
+
+    public void setPostalCode(String postalCode) {
+        this.postalCode = postalCode;
+    }
+
+    public String getCountry() {
+        return country;
+    }
+
+    public void setCountry(String country) {
+        this.country = country;
+    }
+
+    public Address(String street, String city, String postalCode, String country) {
+
+        this.street = street;
+        this.city = city;
+        this.postalCode = postalCode;
+        this.country = country;
+    }
+}

performance-tests/src/main/java/com/baeldung/performancetests/model/source/DeliveryData.java

@@ -0,0 +1,54 @@
+package com.baeldung.performancetests.model.source;
+
+import com.googlecode.jmapper.annotations.JGlobalMap;
+import com.googlecode.jmapper.annotations.JMapAccessor;
+
+public class DeliveryData {
+    private Address deliveryAddress;
+    @JMapAccessor(get = "isPrePaid", set = "setPrePaid")
+    private boolean isPrePaid;
+    private String trackingCode;
+    private int expectedDeliveryTimeInDays;
+
+    public DeliveryData() {
+    }
+
+    public Address getDeliveryAddress() {
+        return deliveryAddress;
+    }
+
+    public void setDeliveryAddress(Address deliveryAddress) {
+        this.deliveryAddress = deliveryAddress;
+    }
+
+    public boolean isPrePaid() {
+        return isPrePaid;
+    }
+
+    public void setPrePaid(boolean prePaid) {
+        isPrePaid = prePaid;
+    }
+
+    public String getTrackingCode() {
+        return trackingCode;
+    }
+
+    public void setTrackingCode(String trackingCode) {
+        this.trackingCode = trackingCode;
+    }
+
+    public int getExpectedDeliveryTimeInDays() {
+        return expectedDeliveryTimeInDays;
+    }
+
+    public void setExpectedDeliveryTimeInDays(int expectedDeliveryTimeInDays) {
+        this.expectedDeliveryTimeInDays = expectedDeliveryTimeInDays;
+    }
+
+    public DeliveryData(Address deliveryAddress, boolean isPrePaid, String trackingCode, int expectedDeliveryTimeInDays) {
+        this.deliveryAddress = deliveryAddress;
+        this.isPrePaid = isPrePaid;
+        this.trackingCode = trackingCode;
+        this.expectedDeliveryTimeInDays = expectedDeliveryTimeInDays;
+    }
+}

performance-tests/src/main/java/com/baeldung/performancetests/model/source/Discount.java

@@ -0,0 +1,44 @@
+package com.baeldung.performancetests.model.source;
+
+import com.googlecode.jmapper.annotations.JGlobalMap;
+
+import java.math.BigDecimal;
+public class Discount {
+    private String startTime;
+    private String endTime;
+    private BigDecimal discountPrice;
+
+    public Discount() {
+    }
+
+    public String getStartTime() {
+        return startTime;
+    }
+
+    public void setStartTime(String startTime) {
+        this.startTime = startTime;
+    }
+
+    public String getEndTime() {
+        return endTime;
+    }
+
+    public void setEndTime(String endTime) {
+        this.endTime = endTime;
+    }
+
+    public BigDecimal getDiscountPrice() {
+        return discountPrice;
+    }
+
+    public void setDiscountPrice(BigDecimal discountPrice) {
+        this.discountPrice = discountPrice;
+    }
+
+    public Discount(String startTime, String endTime, BigDecimal discountPrice) {
+
+        this.startTime = startTime;
+        this.endTime = endTime;
+        this.discountPrice = discountPrice;
+    }
+}

performance-tests/src/main/java/com/baeldung/performancetests/model/source/OrderStatus.java

@@ -0,0 +1,7 @@
+package com.baeldung.performancetests.model.source;
+
+import com.googlecode.jmapper.annotations.JGlobalMap;
+
+public enum  OrderStatus {
+    CREATED, CONFIRMED, COLLECTING, IN_TRANSPORT, FINISHED
+}