Merge remote-tracking branch 'upstream/master'

.gitignore

@@ -48,3 +48,12 @@ dependency-reduced-pom.xml
 *.so
 *.dylib
 *.dll
+
+xml/src/test/resources/example_dom4j_new.xml
+xml/src/test/resources/example_dom4j_updated.xml
+xml/src/test/resources/example_jaxb_new.xml
+core-java-io/hard_link.txt
+core-java-io/target_link.txt
+core-java/src/main/java/com/baeldung/manifest/MANIFEST.MF
+ethereum/logs/
+jmeter/src/main/resources/*-JMeter.csv

README.md

@@ -19,7 +19,7 @@ In additional to Spring, the following technologies are in focus: `core Java`, `
 
 Building the project
 ====================
-To do the full build, do: `mvn install -Dgib.enabled=false`
+To do the full build, do: `mvn install -Pdefault -Dgib.enabled=false`
 
 
 Working with the code in Eclipse

apache-avro/pom.xml

@@ -0,0 +1,88 @@
+<?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</groupId>
+    <artifactId>apache-avro-tutorial</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <compiler-plugin.version>3.5</compiler-plugin.version>
+        <avro.version>1.8.2</avro.version>
+        <java.version>1.8</java.version>
+        <slf4j.version>1.7.25</slf4j.version>
+    </properties>
+	
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-modules</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>4.10</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-simple</artifactId>
+            <version>${slf4j.version}</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.avro</groupId>
+            <artifactId>avro</artifactId>
+            <version>${avro.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.avro</groupId>
+            <artifactId>avro-compiler</artifactId>
+            <version>${avro.version}</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.apache.avro</groupId>
+            <artifactId>avro-maven-plugin</artifactId>
+            <version>${avro.version}</version>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>${compiler-plugin.version}</version>
+                <configuration>
+                    <source>${java.version}</source>
+                    <target>${java.version}</target>
+                </configuration>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.avro</groupId>
+                <artifactId>avro-maven-plugin</artifactId>
+                <version>${avro.version}</version>
+                <executions>
+                    <execution>
+                        <id>schemas</id>
+                        <phase>generate-sources</phase>
+                        <goals>
+                            <goal>schema</goal>
+                            <goal>protocol</goal>
+                            <goal>idl-protocol</goal>
+                        </goals>
+                        <configuration>
+                            <sourceDirectory>${project.basedir}/src/main/resources/</sourceDirectory>
+                            <outputDirectory>${project.basedir}/src/main/java/</outputDirectory>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+</project>

apache-avro/src/main/java/com/baeldung/avro/util/AvroClassGenerator.java

@@ -0,0 +1,14 @@
+package com.baeldung.avro.util;
+
+import org.apache.avro.Schema;
+import org.apache.avro.compiler.specific.SpecificCompiler;
+
+import java.io.File;
+import java.io.IOException;
+
+public class AvroClassGenerator {
+    public void generateAvroClasses() throws IOException {
+        SpecificCompiler compiler = new SpecificCompiler(new Schema.Parser().parse(new File("src/main/resources/avroHttpRequest-schema.avsc")));
+        compiler.compileToDestination(new File("src/main/resources"), new File("src/main/java")); 
+    }
+}

apache-avro/src/main/java/com/baeldung/avro/util/AvroSchemaBuilder.java

@@ -0,0 +1,24 @@
+package com.baeldung.avro.util;
+
+
+import org.apache.avro.Schema;
+import org.apache.avro.SchemaBuilder;
+
+public class AvroSchemaBuilder {
+
+    public Schema createAvroHttpRequestSchema(){
+
+        Schema clientIdentifier = SchemaBuilder.record("ClientIdentifier").namespace("com.baeldung.avro.model")
+                .fields().requiredString("hostName").requiredString("ipAddress").endRecord();
+
+        Schema avroHttpRequest = SchemaBuilder.record("AvroHttpRequest").namespace("com.baeldung.avro.model").fields()
+                .requiredLong("requestTime")
+                .name("clientIdentifier").type(clientIdentifier).noDefault()
+                .name("employeeNames").type().array().items().stringType().arrayDefault(null)
+                .name("active").type().enumeration("Active").symbols("YES", "NO").noDefault()
+                .endRecord();
+        return avroHttpRequest;
+    }
+}
+
+

apache-avro/src/main/java/com/baeldung/avro/util/model/Active.java

@@ -0,0 +1,13 @@
+/**
+ * Autogenerated by Avro
+ *
+ * DO NOT EDIT DIRECTLY
+ */
+package com.baeldung.avro.util.model;
+@SuppressWarnings("all")
+@org.apache.avro.specific.AvroGenerated
+public enum Active {
+  YES, NO  ;
+  public static final org.apache.avro.Schema SCHEMA$ = new org.apache.avro.Schema.Parser().parse("{\"type\":\"enum\",\"name\":\"Active\",\"namespace\":\"com.baeldung.avro.model\",\"symbols\":[\"YES\",\"NO\"]}");
+  public static org.apache.avro.Schema getClassSchema() { return SCHEMA$; }
+}

apache-avro/src/main/java/com/baeldung/avro/util/model/AvroHttpRequest.java

@@ -0,0 +1,491 @@
+/**
+ * Autogenerated by Avro
+ *
+ * DO NOT EDIT DIRECTLY
+ */
+package com.baeldung.avro.util.model;
+
+import org.apache.avro.specific.SpecificData;
+import org.apache.avro.message.BinaryMessageEncoder;
+import org.apache.avro.message.BinaryMessageDecoder;
+import org.apache.avro.message.SchemaStore;
+
+@SuppressWarnings("all")
+@org.apache.avro.specific.AvroGenerated
+public class AvroHttpRequest extends org.apache.avro.specific.SpecificRecordBase implements org.apache.avro.specific.SpecificRecord {
+  private static final long serialVersionUID = -8649010116827875312L;
+  public static final org.apache.avro.Schema SCHEMA$ = new org.apache.avro.Schema.Parser().parse("{\"type\":\"record\",\"name\":\"AvroHttpRequest\",\"namespace\":\"com.baeldung.avro.model\",\"fields\":[{\"name\":\"requestTime\",\"type\":\"long\"},{\"name\":\"clientIdentifier\",\"type\":{\"type\":\"record\",\"name\":\"ClientIdentifier\",\"fields\":[{\"name\":\"hostName\",\"type\":\"string\"},{\"name\":\"ipAddress\",\"type\":\"string\"}]}},{\"name\":\"employeeNames\",\"type\":{\"type\":\"array\",\"items\":\"string\"},\"default\":null},{\"name\":\"active\",\"type\":{\"type\":\"enum\",\"name\":\"Active\",\"symbols\":[\"YES\",\"NO\"]}}]}");
+  public static org.apache.avro.Schema getClassSchema() { return SCHEMA$; }
+
+  private static SpecificData MODEL$ = new SpecificData();
+
+  private static final BinaryMessageEncoder<AvroHttpRequest> ENCODER =
+      new BinaryMessageEncoder<AvroHttpRequest>(MODEL$, SCHEMA$);
+
+  private static final BinaryMessageDecoder<AvroHttpRequest> DECODER =
+      new BinaryMessageDecoder<AvroHttpRequest>(MODEL$, SCHEMA$);
+
+  /**
+   * Return the BinaryMessageDecoder instance used by this class.
+   */
+  public static BinaryMessageDecoder<AvroHttpRequest> getDecoder() {
+    return DECODER;
+  }
+
+  /**
+   * Create a new BinaryMessageDecoder instance for this class that uses the specified {@link SchemaStore}.
+   * @param resolver a {@link SchemaStore} used to find schemas by fingerprint
+   */
+  public static BinaryMessageDecoder<AvroHttpRequest> createDecoder(SchemaStore resolver) {
+    return new BinaryMessageDecoder<AvroHttpRequest>(MODEL$, SCHEMA$, resolver);
+  }
+
+  /** Serializes this AvroHttpRequest to a ByteBuffer. */
+  public java.nio.ByteBuffer toByteBuffer() throws java.io.IOException {
+    return ENCODER.encode(this);
+  }
+
+  /** Deserializes a AvroHttpRequest from a ByteBuffer. */
+  public static AvroHttpRequest fromByteBuffer(
+      java.nio.ByteBuffer b) throws java.io.IOException {
+    return DECODER.decode(b);
+  }
+
+  @Deprecated public long requestTime;
+  @Deprecated public ClientIdentifier clientIdentifier;
+  @Deprecated public java.util.List<java.lang.CharSequence> employeeNames;
+  @Deprecated public Active active;
+
+  /**
+   * Default constructor.  Note that this does not initialize fields
+   * to their default values from the schema.  If that is desired then
+   * one should use <code>newBuilder()</code>.
+   */
+  public AvroHttpRequest() {}
+
+  /**
+   * All-args constructor.
+   * @param requestTime The new value for requestTime
+   * @param clientIdentifier The new value for clientIdentifier
+   * @param employeeNames The new value for employeeNames
+   * @param active The new value for active
+   */
+  public AvroHttpRequest(java.lang.Long requestTime, ClientIdentifier clientIdentifier, java.util.List<java.lang.CharSequence> employeeNames, Active active) {
+    this.requestTime = requestTime;
+    this.clientIdentifier = clientIdentifier;
+    this.employeeNames = employeeNames;
+    this.active = active;
+  }
+
+  public org.apache.avro.Schema getSchema() { return SCHEMA$; }
+  // Used by DatumWriter.  Applications should not call.
+  public java.lang.Object get(int field$) {
+    switch (field$) {
+    case 0: return requestTime;
+    case 1: return clientIdentifier;
+    case 2: return employeeNames;
+    case 3: return active;
+    default: throw new org.apache.avro.AvroRuntimeException("Bad index");
+    }
+  }
+
+  // Used by DatumReader.  Applications should not call.
+  @SuppressWarnings(value="unchecked")
+  public void put(int field$, java.lang.Object value$) {
+    switch (field$) {
+    case 0: requestTime = (java.lang.Long)value$; break;
+    case 1: clientIdentifier = (ClientIdentifier)value$; break;
+    case 2: employeeNames = (java.util.List<java.lang.CharSequence>)value$; break;
+    case 3: active = (Active)value$; break;
+    default: throw new org.apache.avro.AvroRuntimeException("Bad index");
+    }
+  }
+
+  /**
+   * Gets the value of the 'requestTime' field.
+   * @return The value of the 'requestTime' field.
+   */
+  public java.lang.Long getRequestTime() {
+    return requestTime;
+  }
+
+  /**
+   * Sets the value of the 'requestTime' field.
+   * @param value the value to set.
+   */
+  public void setRequestTime(java.lang.Long value) {
+    this.requestTime = value;
+  }
+
+  /**
+   * Gets the value of the 'clientIdentifier' field.
+   * @return The value of the 'clientIdentifier' field.
+   */
+  public ClientIdentifier getClientIdentifier() {
+    return clientIdentifier;
+  }
+
+  /**
+   * Sets the value of the 'clientIdentifier' field.
+   * @param value the value to set.
+   */
+  public void setClientIdentifier(ClientIdentifier value) {
+    this.clientIdentifier = value;
+  }
+
+  /**
+   * Gets the value of the 'employeeNames' field.
+   * @return The value of the 'employeeNames' field.
+   */
+  public java.util.List<java.lang.CharSequence> getEmployeeNames() {
+    return employeeNames;
+  }
+
+  /**
+   * Sets the value of the 'employeeNames' field.
+   * @param value the value to set.
+   */
+  public void setEmployeeNames(java.util.List<java.lang.CharSequence> value) {
+    this.employeeNames = value;
+  }
+
+  /**
+   * Gets the value of the 'active' field.
+   * @return The value of the 'active' field.
+   */
+  public Active getActive() {
+    return active;
+  }
+
+  /**
+   * Sets the value of the 'active' field.
+   * @param value the value to set.
+   */
+  public void setActive(Active value) {
+    this.active = value;
+  }
+
+  /**
+   * Creates a new AvroHttpRequest RecordBuilder.
+   * @return A new AvroHttpRequest RecordBuilder
+   */
+  public static AvroHttpRequest.Builder newBuilder() {
+    return new AvroHttpRequest.Builder();
+  }
+
+  /**
+   * Creates a new AvroHttpRequest RecordBuilder by copying an existing Builder.
+   * @param other The existing builder to copy.
+   * @return A new AvroHttpRequest RecordBuilder
+   */
+  public static AvroHttpRequest.Builder newBuilder(AvroHttpRequest.Builder other) {
+    return new AvroHttpRequest.Builder(other);
+  }
+
+  /**
+   * Creates a new AvroHttpRequest RecordBuilder by copying an existing AvroHttpRequest instance.
+   * @param other The existing instance to copy.
+   * @return A new AvroHttpRequest RecordBuilder
+   */
+  public static AvroHttpRequest.Builder newBuilder(AvroHttpRequest other) {
+    return new AvroHttpRequest.Builder(other);
+  }
+
+  /**
+   * RecordBuilder for AvroHttpRequest instances.
+   */
+  public static class Builder extends org.apache.avro.specific.SpecificRecordBuilderBase<AvroHttpRequest>
+    implements org.apache.avro.data.RecordBuilder<AvroHttpRequest> {
+
+    private long requestTime;
+    private ClientIdentifier clientIdentifier;
+    private ClientIdentifier.Builder clientIdentifierBuilder;
+    private java.util.List<java.lang.CharSequence> employeeNames;
+    private Active active;
+
+    /** Creates a new Builder */
+    private Builder() {
+      super(SCHEMA$);
+    }
+
+    /**
+     * Creates a Builder by copying an existing Builder.
+     * @param other The existing Builder to copy.
+     */
+    private Builder(AvroHttpRequest.Builder other) {
+      super(other);
+      if (isValidValue(fields()[0], other.requestTime)) {
+        this.requestTime = data().deepCopy(fields()[0].schema(), other.requestTime);
+        fieldSetFlags()[0] = true;
+      }
+      if (isValidValue(fields()[1], other.clientIdentifier)) {
+        this.clientIdentifier = data().deepCopy(fields()[1].schema(), other.clientIdentifier);
+        fieldSetFlags()[1] = true;
+      }
+      if (other.hasClientIdentifierBuilder()) {
+        this.clientIdentifierBuilder = ClientIdentifier.newBuilder(other.getClientIdentifierBuilder());
+      }
+      if (isValidValue(fields()[2], other.employeeNames)) {
+        this.employeeNames = data().deepCopy(fields()[2].schema(), other.employeeNames);
+        fieldSetFlags()[2] = true;
+      }
+      if (isValidValue(fields()[3], other.active)) {
+        this.active = data().deepCopy(fields()[3].schema(), other.active);
+        fieldSetFlags()[3] = true;
+      }
+    }
+
+    /**
+     * Creates a Builder by copying an existing AvroHttpRequest instance
+     * @param other The existing instance to copy.
+     */
+    private Builder(AvroHttpRequest other) {
+            super(SCHEMA$);
+      if (isValidValue(fields()[0], other.requestTime)) {
+        this.requestTime = data().deepCopy(fields()[0].schema(), other.requestTime);
+        fieldSetFlags()[0] = true;
+      }
+      if (isValidValue(fields()[1], other.clientIdentifier)) {
+        this.clientIdentifier = data().deepCopy(fields()[1].schema(), other.clientIdentifier);
+        fieldSetFlags()[1] = true;
+      }
+      this.clientIdentifierBuilder = null;
+      if (isValidValue(fields()[2], other.employeeNames)) {
+        this.employeeNames = data().deepCopy(fields()[2].schema(), other.employeeNames);
+        fieldSetFlags()[2] = true;
+      }
+      if (isValidValue(fields()[3], other.active)) {
+        this.active = data().deepCopy(fields()[3].schema(), other.active);
+        fieldSetFlags()[3] = true;
+      }
+    }
+
+    /**
+      * Gets the value of the 'requestTime' field.
+      * @return The value.
+      */
+    public java.lang.Long getRequestTime() {
+      return requestTime;
+    }
+
+    /**
+      * Sets the value of the 'requestTime' field.
+      * @param value The value of 'requestTime'.
+      * @return This builder.
+      */
+    public AvroHttpRequest.Builder setRequestTime(long value) {
+      validate(fields()[0], value);
+      this.requestTime = value;
+      fieldSetFlags()[0] = true;
+      return this;
+    }
+
+    /**
+      * Checks whether the 'requestTime' field has been set.
+      * @return True if the 'requestTime' field has been set, false otherwise.
+      */
+    public boolean hasRequestTime() {
+      return fieldSetFlags()[0];
+    }
+
+
+    /**
+      * Clears the value of the 'requestTime' field.
+      * @return This builder.
+      */
+    public AvroHttpRequest.Builder clearRequestTime() {
+      fieldSetFlags()[0] = false;
+      return this;
+    }
+
+    /**
+      * Gets the value of the 'clientIdentifier' field.
+      * @return The value.
+      */
+    public ClientIdentifier getClientIdentifier() {
+      return clientIdentifier;
+    }
+
+    /**
+      * Sets the value of the 'clientIdentifier' field.
+      * @param value The value of 'clientIdentifier'.
+      * @return This builder.
+      */
+    public AvroHttpRequest.Builder setClientIdentifier(ClientIdentifier value) {
+      validate(fields()[1], value);
+      this.clientIdentifierBuilder = null;
+      this.clientIdentifier = value;
+      fieldSetFlags()[1] = true;
+      return this;
+    }
+
+    /**
+      * Checks whether the 'clientIdentifier' field has been set.
+      * @return True if the 'clientIdentifier' field has been set, false otherwise.
+      */
+    public boolean hasClientIdentifier() {
+      return fieldSetFlags()[1];
+    }
+
+    /**
+     * Gets the Builder instance for the 'clientIdentifier' field and creates one if it doesn't exist yet.
+     * @return This builder.
+     */
+    public ClientIdentifier.Builder getClientIdentifierBuilder() {
+      if (clientIdentifierBuilder == null) {
+        if (hasClientIdentifier()) {
+          setClientIdentifierBuilder(ClientIdentifier.newBuilder(clientIdentifier));
+        } else {
+          setClientIdentifierBuilder(ClientIdentifier.newBuilder());
+        }
+      }
+      return clientIdentifierBuilder;
+    }
+
+    /**
+     * Sets the Builder instance for the 'clientIdentifier' field
+     * @param value The builder instance that must be set.
+     * @return This builder.
+     */
+    public AvroHttpRequest.Builder setClientIdentifierBuilder(ClientIdentifier.Builder value) {
+      clearClientIdentifier();
+      clientIdentifierBuilder = value;
+      return this;
+    }
+
+    /**
+     * Checks whether the 'clientIdentifier' field has an active Builder instance
+     * @return True if the 'clientIdentifier' field has an active Builder instance
+     */
+    public boolean hasClientIdentifierBuilder() {
+      return clientIdentifierBuilder != null;
+    }
+
+    /**
+      * Clears the value of the 'clientIdentifier' field.
+      * @return This builder.
+      */
+    public AvroHttpRequest.Builder clearClientIdentifier() {
+      clientIdentifier = null;
+      clientIdentifierBuilder = null;
+      fieldSetFlags()[1] = false;
+      return this;
+    }
+
+    /**
+      * Gets the value of the 'employeeNames' field.
+      * @return The value.
+      */
+    public java.util.List<java.lang.CharSequence> getEmployeeNames() {
+      return employeeNames;
+    }
+
+    /**
+      * Sets the value of the 'employeeNames' field.
+      * @param value The value of 'employeeNames'.
+      * @return This builder.
+      */
+    public AvroHttpRequest.Builder setEmployeeNames(java.util.List<java.lang.CharSequence> value) {
+      validate(fields()[2], value);
+      this.employeeNames = value;
+      fieldSetFlags()[2] = true;
+      return this;
+    }
+
+    /**
+      * Checks whether the 'employeeNames' field has been set.
+      * @return True if the 'employeeNames' field has been set, false otherwise.
+      */
+    public boolean hasEmployeeNames() {
+      return fieldSetFlags()[2];
+    }
+
+
+    /**
+      * Clears the value of the 'employeeNames' field.
+      * @return This builder.
+      */
+    public AvroHttpRequest.Builder clearEmployeeNames() {
+      employeeNames = null;
+      fieldSetFlags()[2] = false;
+      return this;
+    }
+
+    /**
+      * Gets the value of the 'active' field.
+      * @return The value.
+      */
+    public Active getActive() {
+      return active;
+    }
+
+    /**
+      * Sets the value of the 'active' field.
+      * @param value The value of 'active'.
+      * @return This builder.
+      */
+    public AvroHttpRequest.Builder setActive(Active value) {
+      validate(fields()[3], value);
+      this.active = value;
+      fieldSetFlags()[3] = true;
+      return this;
+    }
+
+    /**
+      * Checks whether the 'active' field has been set.
+      * @return True if the 'active' field has been set, false otherwise.
+      */
+    public boolean hasActive() {
+      return fieldSetFlags()[3];
+    }
+
+
+    /**
+      * Clears the value of the 'active' field.
+      * @return This builder.
+      */
+    public AvroHttpRequest.Builder clearActive() {
+      active = null;
+      fieldSetFlags()[3] = false;
+      return this;
+    }
+
+    @Override
+    @SuppressWarnings("unchecked")
+    public AvroHttpRequest build() {
+      try {
+        AvroHttpRequest record = new AvroHttpRequest();
+        record.requestTime = fieldSetFlags()[0] ? this.requestTime : (java.lang.Long) defaultValue(fields()[0]);
+        if (clientIdentifierBuilder != null) {
+          record.clientIdentifier = this.clientIdentifierBuilder.build();
+        } else {
+          record.clientIdentifier = fieldSetFlags()[1] ? this.clientIdentifier : (ClientIdentifier) defaultValue(fields()[1]);
+        }
+        record.employeeNames = fieldSetFlags()[2] ? this.employeeNames : (java.util.List<java.lang.CharSequence>) defaultValue(fields()[2]);
+        record.active = fieldSetFlags()[3] ? this.active : (Active) defaultValue(fields()[3]);
+        return record;
+      } catch (java.lang.Exception e) {
+        throw new org.apache.avro.AvroRuntimeException(e);
+      }
+    }
+  }
+
+  @SuppressWarnings("unchecked")
+  private static final org.apache.avro.io.DatumWriter<AvroHttpRequest>
+    WRITER$ = (org.apache.avro.io.DatumWriter<AvroHttpRequest>)MODEL$.createDatumWriter(SCHEMA$);
+
+  @Override public void writeExternal(java.io.ObjectOutput out)
+    throws java.io.IOException {
+    WRITER$.write(this, SpecificData.getEncoder(out));
+  }
+
+  @SuppressWarnings("unchecked")
+  private static final org.apache.avro.io.DatumReader<AvroHttpRequest>
+    READER$ = (org.apache.avro.io.DatumReader<AvroHttpRequest>)MODEL$.createDatumReader(SCHEMA$);
+
+  @Override public void readExternal(java.io.ObjectInput in)
+    throws java.io.IOException {
+    READER$.read(this, SpecificData.getDecoder(in));
+  }
+
+}

apache-avro/src/main/java/com/baeldung/avro/util/model/ClientIdentifier.java

@@ -0,0 +1,308 @@
+/**
+ * Autogenerated by Avro
+ *
+ * DO NOT EDIT DIRECTLY
+ */
+package com.baeldung.avro.util.model;
+
+import org.apache.avro.specific.SpecificData;
+import org.apache.avro.message.BinaryMessageEncoder;
+import org.apache.avro.message.BinaryMessageDecoder;
+import org.apache.avro.message.SchemaStore;
+
+@SuppressWarnings("all")
+@org.apache.avro.specific.AvroGenerated
+public class ClientIdentifier extends org.apache.avro.specific.SpecificRecordBase implements org.apache.avro.specific.SpecificRecord {
+  private static final long serialVersionUID = 8754570983127295424L;
+  public static final org.apache.avro.Schema SCHEMA$ = new org.apache.avro.Schema.Parser().parse("{\"type\":\"record\",\"name\":\"ClientIdentifier\",\"namespace\":\"com.baeldung.avro.model\",\"fields\":[{\"name\":\"hostName\",\"type\":\"string\"},{\"name\":\"ipAddress\",\"type\":\"string\"}]}");
+  public static org.apache.avro.Schema getClassSchema() { return SCHEMA$; }
+
+  private static SpecificData MODEL$ = new SpecificData();
+
+  private static final BinaryMessageEncoder<ClientIdentifier> ENCODER =
+      new BinaryMessageEncoder<ClientIdentifier>(MODEL$, SCHEMA$);
+
+  private static final BinaryMessageDecoder<ClientIdentifier> DECODER =
+      new BinaryMessageDecoder<ClientIdentifier>(MODEL$, SCHEMA$);
+
+  /**
+   * Return the BinaryMessageDecoder instance used by this class.
+   */
+  public static BinaryMessageDecoder<ClientIdentifier> getDecoder() {
+    return DECODER;
+  }
+
+  /**
+   * Create a new BinaryMessageDecoder instance for this class that uses the specified {@link SchemaStore}.
+   * @param resolver a {@link SchemaStore} used to find schemas by fingerprint
+   */
+  public static BinaryMessageDecoder<ClientIdentifier> createDecoder(SchemaStore resolver) {
+    return new BinaryMessageDecoder<ClientIdentifier>(MODEL$, SCHEMA$, resolver);
+  }
+
+  /** Serializes this ClientIdentifier to a ByteBuffer. */
+  public java.nio.ByteBuffer toByteBuffer() throws java.io.IOException {
+    return ENCODER.encode(this);
+  }
+
+  /** Deserializes a ClientIdentifier from a ByteBuffer. */
+  public static ClientIdentifier fromByteBuffer(
+      java.nio.ByteBuffer b) throws java.io.IOException {
+    return DECODER.decode(b);
+  }
+
+  @Deprecated public java.lang.CharSequence hostName;
+  @Deprecated public java.lang.CharSequence ipAddress;
+
+  /**
+   * Default constructor.  Note that this does not initialize fields
+   * to their default values from the schema.  If that is desired then
+   * one should use <code>newBuilder()</code>.
+   */
+  public ClientIdentifier() {}
+
+  /**
+   * All-args constructor.
+   * @param hostName The new value for hostName
+   * @param ipAddress The new value for ipAddress
+   */
+  public ClientIdentifier(java.lang.CharSequence hostName, java.lang.CharSequence ipAddress) {
+    this.hostName = hostName;
+    this.ipAddress = ipAddress;
+  }
+
+  public org.apache.avro.Schema getSchema() { return SCHEMA$; }
+  // Used by DatumWriter.  Applications should not call.
+  public java.lang.Object get(int field$) {
+    switch (field$) {
+    case 0: return hostName;
+    case 1: return ipAddress;
+    default: throw new org.apache.avro.AvroRuntimeException("Bad index");
+    }
+  }
+
+  // Used by DatumReader.  Applications should not call.
+  @SuppressWarnings(value="unchecked")
+  public void put(int field$, java.lang.Object value$) {
+    switch (field$) {
+    case 0: hostName = (java.lang.CharSequence)value$; break;
+    case 1: ipAddress = (java.lang.CharSequence)value$; break;
+    default: throw new org.apache.avro.AvroRuntimeException("Bad index");
+    }
+  }
+
+  /**
+   * Gets the value of the 'hostName' field.
+   * @return The value of the 'hostName' field.
+   */
+  public java.lang.CharSequence getHostName() {
+    return hostName;
+  }
+
+  /**
+   * Sets the value of the 'hostName' field.
+   * @param value the value to set.
+   */
+  public void setHostName(java.lang.CharSequence value) {
+    this.hostName = value;
+  }
+
+  /**
+   * Gets the value of the 'ipAddress' field.
+   * @return The value of the 'ipAddress' field.
+   */
+  public java.lang.CharSequence getIpAddress() {
+    return ipAddress;
+  }
+
+  /**
+   * Sets the value of the 'ipAddress' field.
+   * @param value the value to set.
+   */
+  public void setIpAddress(java.lang.CharSequence value) {
+    this.ipAddress = value;
+  }
+
+  /**
+   * Creates a new ClientIdentifier RecordBuilder.
+   * @return A new ClientIdentifier RecordBuilder
+   */
+  public static ClientIdentifier.Builder newBuilder() {
+    return new ClientIdentifier.Builder();
+  }
+
+  /**
+   * Creates a new ClientIdentifier RecordBuilder by copying an existing Builder.
+   * @param other The existing builder to copy.
+   * @return A new ClientIdentifier RecordBuilder
+   */
+  public static ClientIdentifier.Builder newBuilder(ClientIdentifier.Builder other) {
+    return new ClientIdentifier.Builder(other);
+  }
+
+  /**
+   * Creates a new ClientIdentifier RecordBuilder by copying an existing ClientIdentifier instance.
+   * @param other The existing instance to copy.
+   * @return A new ClientIdentifier RecordBuilder
+   */
+  public static ClientIdentifier.Builder newBuilder(ClientIdentifier other) {
+    return new ClientIdentifier.Builder(other);
+  }
+
+  /**
+   * RecordBuilder for ClientIdentifier instances.
+   */
+  public static class Builder extends org.apache.avro.specific.SpecificRecordBuilderBase<ClientIdentifier>
+    implements org.apache.avro.data.RecordBuilder<ClientIdentifier> {
+
+    private java.lang.CharSequence hostName;
+    private java.lang.CharSequence ipAddress;
+
+    /** Creates a new Builder */
+    private Builder() {
+      super(SCHEMA$);
+    }
+
+    /**
+     * Creates a Builder by copying an existing Builder.
+     * @param other The existing Builder to copy.
+     */
+    private Builder(ClientIdentifier.Builder other) {
+      super(other);
+      if (isValidValue(fields()[0], other.hostName)) {
+        this.hostName = data().deepCopy(fields()[0].schema(), other.hostName);
+        fieldSetFlags()[0] = true;
+      }
+      if (isValidValue(fields()[1], other.ipAddress)) {
+        this.ipAddress = data().deepCopy(fields()[1].schema(), other.ipAddress);
+        fieldSetFlags()[1] = true;
+      }
+    }
+
+    /**
+     * Creates a Builder by copying an existing ClientIdentifier instance
+     * @param other The existing instance to copy.
+     */
+    private Builder(ClientIdentifier other) {
+            super(SCHEMA$);
+      if (isValidValue(fields()[0], other.hostName)) {
+        this.hostName = data().deepCopy(fields()[0].schema(), other.hostName);
+        fieldSetFlags()[0] = true;
+      }
+      if (isValidValue(fields()[1], other.ipAddress)) {
+        this.ipAddress = data().deepCopy(fields()[1].schema(), other.ipAddress);
+        fieldSetFlags()[1] = true;
+      }
+    }
+
+    /**
+      * Gets the value of the 'hostName' field.
+      * @return The value.
+      */
+    public java.lang.CharSequence getHostName() {
+      return hostName;
+    }
+
+    /**
+      * Sets the value of the 'hostName' field.
+      * @param value The value of 'hostName'.
+      * @return This builder.
+      */
+    public ClientIdentifier.Builder setHostName(java.lang.CharSequence value) {
+      validate(fields()[0], value);
+      this.hostName = value;
+      fieldSetFlags()[0] = true;
+      return this;
+    }
+
+    /**
+      * Checks whether the 'hostName' field has been set.
+      * @return True if the 'hostName' field has been set, false otherwise.
+      */
+    public boolean hasHostName() {
+      return fieldSetFlags()[0];
+    }
+
+
+    /**
+      * Clears the value of the 'hostName' field.
+      * @return This builder.
+      */
+    public ClientIdentifier.Builder clearHostName() {
+      hostName = null;
+      fieldSetFlags()[0] = false;
+      return this;
+    }
+
+    /**
+      * Gets the value of the 'ipAddress' field.
+      * @return The value.
+      */
+    public java.lang.CharSequence getIpAddress() {
+      return ipAddress;
+    }
+
+    /**
+      * Sets the value of the 'ipAddress' field.
+      * @param value The value of 'ipAddress'.
+      * @return This builder.
+      */
+    public ClientIdentifier.Builder setIpAddress(java.lang.CharSequence value) {
+      validate(fields()[1], value);
+      this.ipAddress = value;
+      fieldSetFlags()[1] = true;
+      return this;
+    }
+
+    /**
+      * Checks whether the 'ipAddress' field has been set.
+      * @return True if the 'ipAddress' field has been set, false otherwise.
+      */
+    public boolean hasIpAddress() {
+      return fieldSetFlags()[1];
+    }
+
+
+    /**
+      * Clears the value of the 'ipAddress' field.
+      * @return This builder.
+      */
+    public ClientIdentifier.Builder clearIpAddress() {
+      ipAddress = null;
+      fieldSetFlags()[1] = false;
+      return this;
+    }
+
+    @Override
+    @SuppressWarnings("unchecked")
+    public ClientIdentifier build() {
+      try {
+        ClientIdentifier record = new ClientIdentifier();
+        record.hostName = fieldSetFlags()[0] ? this.hostName : (java.lang.CharSequence) defaultValue(fields()[0]);
+        record.ipAddress = fieldSetFlags()[1] ? this.ipAddress : (java.lang.CharSequence) defaultValue(fields()[1]);
+        return record;
+      } catch (java.lang.Exception e) {
+        throw new org.apache.avro.AvroRuntimeException(e);
+      }
+    }
+  }
+
+  @SuppressWarnings("unchecked")
+  private static final org.apache.avro.io.DatumWriter<ClientIdentifier>
+    WRITER$ = (org.apache.avro.io.DatumWriter<ClientIdentifier>)MODEL$.createDatumWriter(SCHEMA$);
+
+  @Override public void writeExternal(java.io.ObjectOutput out)
+    throws java.io.IOException {
+    WRITER$.write(this, SpecificData.getEncoder(out));
+  }
+
+  @SuppressWarnings("unchecked")
+  private static final org.apache.avro.io.DatumReader<ClientIdentifier>
+    READER$ = (org.apache.avro.io.DatumReader<ClientIdentifier>)MODEL$.createDatumReader(SCHEMA$);
+
+  @Override public void readExternal(java.io.ObjectInput in)
+    throws java.io.IOException {
+    READER$.read(this, SpecificData.getDecoder(in));
+  }
+
+}

apache-avro/src/main/java/com/baeldung/avro/util/serealization/AvroDeSerealizer.java

@@ -0,0 +1,33 @@
+package com.baeldung.avro.util.serealization;
+
+import com.baeldung.avro.util.model.AvroHttpRequest;
+import org.apache.avro.io.DatumReader;
+import org.apache.avro.io.Decoder;
+import org.apache.avro.io.DecoderFactory;
+import org.apache.avro.specific.SpecificDatumReader;
+
+import java.io.IOException;
+
+public class AvroDeSerealizer {
+
+public AvroHttpRequest deSerealizeAvroHttpRequestJSON(byte[] data){
+    DatumReader<AvroHttpRequest> reader = new SpecificDatumReader<>(AvroHttpRequest.class);
+    Decoder decoder = null;
+    try {
+        decoder = DecoderFactory.get().jsonDecoder(AvroHttpRequest.getClassSchema(), new String(data));
+        return reader.read(null, decoder);
+    } catch (IOException e) {
+        return null;
+    }
+}
+
+public AvroHttpRequest deSerealizeAvroHttpRequestBinary(byte[] data){
+    DatumReader<AvroHttpRequest> employeeReader = new SpecificDatumReader<>(AvroHttpRequest.class);
+    Decoder decoder = DecoderFactory.get().binaryDecoder(data, null);
+    try {
+        return employeeReader.read(null, decoder);
+    } catch (IOException e) {
+        return null;
+    }
+}
+}

apache-avro/src/main/java/com/baeldung/avro/util/serealization/AvroSerealizer.java

@@ -0,0 +1,44 @@
+package com.baeldung.avro.util.serealization;
+
+import com.baeldung.avro.util.model.AvroHttpRequest;
+import org.apache.avro.io.*;
+import org.apache.avro.specific.SpecificDatumWriter;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+
+public class AvroSerealizer {
+
+public byte[] serealizeAvroHttpRequestJSON(AvroHttpRequest request){
+    DatumWriter<AvroHttpRequest> writer = new SpecificDatumWriter<>(AvroHttpRequest.class);
+    byte[] data = new byte[0];
+    ByteArrayOutputStream stream = new ByteArrayOutputStream();
+    Encoder jsonEncoder = null;
+    try {
+        jsonEncoder = EncoderFactory.get().jsonEncoder(AvroHttpRequest.getClassSchema(), stream);
+        writer.write(request, jsonEncoder);
+        jsonEncoder.flush();
+        data = stream.toByteArray();
+    } catch (IOException e) {
+        data =null;
+    }
+    return data;
+}
+
+public byte[] serealizeAvroHttpRequestBinary(AvroHttpRequest request){
+    DatumWriter<AvroHttpRequest> writer = new SpecificDatumWriter<>(AvroHttpRequest.class);
+    byte[] data = new byte[0];
+    ByteArrayOutputStream stream = new ByteArrayOutputStream();
+    Encoder jsonEncoder = EncoderFactory.get().binaryEncoder(stream,null);
+    try {
+        writer.write(request, jsonEncoder);
+        jsonEncoder.flush();
+        data = stream.toByteArray();
+    } catch (IOException e) {
+        data = null;
+    }
+
+    return data;
+}
+
+}

apache-avro/src/main/resources/avroHttpRequest-schema.avsc

@@ -0,0 +1,47 @@
+{
+  "type":"record",
+  "name":"AvroHttpRequest",
+  "namespace":"com.baeldung.avro.model",
+  "fields":[
+    {
+      "name":"requestTime",
+      "type":"long"
+    },
+    {
+      "name":"clientIdentifier",
+      "type":{
+        "type":"record",
+        "name":"ClientIdentifier",
+        "fields":[
+          {
+            "name":"hostName",
+            "type":"string"
+          },
+          {
+            "name":"ipAddress",
+            "type":"string"
+          }
+        ]
+      }
+    },
+    {
+      "name":"employeeNames",
+      "type":{
+        "type":"array",
+        "items":"string"
+      },
+      "default":null
+    },
+    {
+      "name":"active",
+      "type":{
+        "type":"enum",
+        "name":"Active",
+        "symbols":[
+          "YES",
+          "NO"
+        ]
+      }
+    }
+  ]
+}

apache-avro/src/test/java/com/baeldung/avro/util/serealization/AvroSerealizerDeSerealizerTest.java

@@ -0,0 +1,75 @@
+package com.baeldung.avro.util.serealization;
+
+import com.baeldung.avro.util.model.Active;
+import com.baeldung.avro.util.model.AvroHttpRequest;
+import com.baeldung.avro.util.model.ClientIdentifier;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Objects;
+
+import static org.junit.Assert.*;
+
+public class AvroSerealizerDeSerealizerTest {
+
+    AvroSerealizer serealizer;
+    AvroDeSerealizer deSerealizer;
+    AvroHttpRequest request;
+
+    @Before
+    public void setUp() throws Exception {
+        serealizer = new AvroSerealizer();
+        deSerealizer = new AvroDeSerealizer();
+
+        ClientIdentifier clientIdentifier = ClientIdentifier.newBuilder().
+                setHostName("localhost").setIpAddress("255.255.255.0").build();
+
+        List<CharSequence> employees = new ArrayList();
+        employees.add("James");
+        employees.add("Alice");
+        employees.add("David");
+        employees.add("Han");
+
+        request = AvroHttpRequest.newBuilder().setRequestTime(01l)
+                .setActive(Active.YES).setClientIdentifier(clientIdentifier)
+                .setEmployeeNames(employees).build();
+    }
+
+    @After
+    public void tearDown() throws Exception {
+    }
+
+@Test
+public void WhenSerialized_UsingJSONEncoder_ObjectGetsSerialized(){
+    byte[] data = serealizer.serealizeAvroHttpRequestJSON(request);
+    assertTrue(Objects.nonNull(data));
+    assertTrue(data.length > 0);
+}
+
+@Test
+public void WhenSerialized_UsingBinaryEncoder_ObjectGetsSerialized(){
+    byte[] data = serealizer.serealizeAvroHttpRequestBinary(request);
+    assertTrue(Objects.nonNull(data));
+    assertTrue(data.length > 0);
+}
+
+@Test
+public void WhenDeserialize_UsingJSONDecoder_ActualAndExpectedObjectsAreEqual(){
+    byte[] data = serealizer.serealizeAvroHttpRequestJSON(request);
+    AvroHttpRequest actualRequest = deSerealizer.deSerealizeAvroHttpRequestJSON(data);
+    assertEquals(actualRequest,request);
+    assertTrue(actualRequest.getRequestTime().equals(request.getRequestTime()));
+}
+
+@Test
+public void WhenDeserialize_UsingBinaryecoder_ActualAndExpectedObjectsAreEqual(){
+    byte[] data = serealizer.serealizeAvroHttpRequestBinary(request);
+    AvroHttpRequest actualRequest = deSerealizer.deSerealizeAvroHttpRequestBinary(data);
+    assertEquals(actualRequest,request);
+    assertTrue(actualRequest.getRequestTime().equals(request.getRequestTime()));
+}
+}
+

core-java-8/pom.xml

@@ -99,6 +99,16 @@
             <artifactId>joda-time</artifactId>
             <version>${joda.version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.aspectj</groupId>
+            <artifactId>aspectjrt</artifactId>
+            <version>${asspectj.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.aspectj</groupId>
+            <artifactId>aspectjweaver</artifactId>
+            <version>${asspectj.version}</version>
+        </dependency>
     </dependencies>
 
     <build>
@@ -170,6 +180,7 @@
         <joda.version>2.10</joda.version>
         <!-- testing -->
         <assertj.version>3.6.1</assertj.version>
+        <asspectj.version>1.8.9</asspectj.version>
         <avaitility.version>1.7.0</avaitility.version>
         <jmh-core.version>1.19</jmh-core.version>
         <jmh-generator.version>1.19</jmh-generator.version>

core-java-8/src/main/java/com/baeldung/aspect/ChangeCallsToCurrentTimeInMillisMethod.aj

@@ -0,0 +1,9 @@
+package com.baeldung.aspect;
+
+public aspect ChangeCallsToCurrentTimeInMillisMethod {
+    long around():
+            call(public static native long java.lang.System.currentTimeMillis())
+                    && within(user.code.base.pckg.*) {
+        return 0;
+    }
+}

core-java-8/src/test/java/com/baeldung/util/CurrentDateTimeUnitTest.java

@@ -1,6 +1,7 @@
 package com.baeldung.util;
 
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
 
 import java.time.Clock;
 import java.time.Instant;
@@ -9,6 +10,8 @@ import java.time.LocalTime;
 import java.time.ZoneId;
 import java.time.temporal.ChronoField;
 
+import org.joda.time.DateTime;
+import org.joda.time.DateTimeUtils;
 import org.junit.Test;
 
 public class CurrentDateTimeUnitTest {
@@ -39,5 +42,4 @@ public class CurrentDateTimeUnitTest {
 
         assertEquals(clock.instant().getEpochSecond(), now.getEpochSecond());
     }
-
 }

core-java-collections/src/main/java/com/baeldung/convertlisttomap/Animal.java

@@ -0,0 +1,27 @@
+package com.baeldung.convertlisttomap;
+
+public class Animal {
+    private int id;
+    private String name;
+
+    public Animal(int id, String name) {
+        this.id = id;
+        this.setName(name);
+    }
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+}

core-java-collections/src/main/java/com/baeldung/convertlisttomap/ConvertListToMapService.java

@@ -0,0 +1,42 @@
+package com.baeldung.convertlisttomap;
+
+import com.google.common.collect.Maps;
+import org.apache.commons.collections4.MapUtils;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+
+public class ConvertListToMapService {
+
+    public Map<Integer, Animal> convertListBeforeJava8(List<Animal> list) {
+
+        Map<Integer, Animal> map = new HashMap<>();
+
+        for (Animal animal : list) {
+            map.put(animal.getId(), animal);
+        }
+        return map;
+    }
+
+    public Map<Integer, Animal> convertListAfterJava8(List<Animal> list) {
+        Map<Integer, Animal> map = list.stream().collect(Collectors.toMap(Animal::getId, animal -> animal));
+        return map;
+    }
+
+    public Map<Integer, Animal> convertListWithGuava(List<Animal> list) {
+
+        Map<Integer, Animal> map = Maps.uniqueIndex(list, Animal::getId);
+        return map;
+    }
+
+    public Map<Integer, Animal> convertListWithApacheCommons(List<Animal> list) {
+
+        Map<Integer, Animal> map = new HashMap<>();
+
+        MapUtils.populateMap(map, list, Animal::getId);
+
+        return map;
+    }
+}

core-java-collections/src/test/java/com/baeldung/convertlisttomap/ConvertListToMapServiceUnitTest.java

@@ -0,0 +1,68 @@
+package com.baeldung.convertlisttomap;
+
+import org.junit.Before;
+import org.junit.Test;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.containsInAnyOrder;
+
+public class ConvertListToMapServiceUnitTest {
+    List<Animal> list;
+
+    private ConvertListToMapService convertListService;
+
+    @Before
+    public void init() {
+        this.convertListService = new ConvertListToMapService();
+        this.list = new ArrayList<>();
+
+        Animal cat = new Animal(1, "Cat");
+        list.add(cat);
+        Animal dog = new Animal(2, "Dog");
+        list.add(dog);
+        Animal pig = new Animal(3, "Pig");
+        list.add(pig);
+        Animal cow = new Animal(4, "Cow");
+        list.add(cow);
+        Animal goat = new Animal(5, "Goat");
+        list.add(goat);
+
+    }
+
+    @Test
+    public void givenAList_whenConvertBeforeJava8_thenReturnMapWithTheSameElements() {
+
+        Map<Integer, Animal> map = convertListService.convertListBeforeJava8(list);
+
+        assertThat(map.values(), containsInAnyOrder(list.toArray()));
+    }
+
+    @Test
+    public void givenAList_whenConvertAfterJava8_thenReturnMapWithTheSameElements() {
+
+        Map<Integer, Animal> map = convertListService.convertListAfterJava8(list);
+
+        assertThat(map.values(), containsInAnyOrder(list.toArray()));
+    }
+
+    @Test
+    public void givenAList_whenConvertWithGuava_thenReturnMapWithTheSameElements() {
+
+        Map<Integer, Animal> map = convertListService.convertListWithGuava(list);
+
+        assertThat(map.values(), containsInAnyOrder(list.toArray()));
+    }
+
+    @Test
+    public void givenAList_whenConvertWithApacheCommons_thenReturnMapWithTheSameElements() {
+
+        Map<Integer, Animal> map = convertListService.convertListWithApacheCommons(list);
+
+        assertThat(map.values(), containsInAnyOrder(list.toArray()));
+    }
+
+}

core-java-collections/src/test/java/com/baeldung/convertlisttomap/ConvertListWithDiplicatedIdToMapServiceUnitTest.java

@@ -0,0 +1,68 @@
+package com.baeldung.convertlisttomap;
+
+import org.junit.Before;
+import org.junit.Test;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.hasItem;
+import static org.hamcrest.Matchers.hasSize;
+
+public class ConvertListWithDiplicatedIdToMapServiceUnitTest {
+    List<Animal> duplicatedIdList;
+
+    private ConvertListToMapService convertListService = new ConvertListToMapService();
+
+    @Before
+    public void init() {
+
+        this.duplicatedIdList = new ArrayList<>();
+
+        Animal cat = new Animal(1, "Cat");
+        duplicatedIdList.add(cat);
+        Animal dog = new Animal(2, "Dog");
+        duplicatedIdList.add(dog);
+        Animal pig = new Animal(3, "Pig");
+        duplicatedIdList.add(pig);
+        Animal cow = new Animal(4, "Cow");
+        duplicatedIdList.add(cow);
+        Animal goat = new Animal(4, "Goat");
+        duplicatedIdList.add(goat);
+
+    }
+
+    @Test
+    public void givenADupIdList_whenConvertBeforeJava8_thenReturnMapWithRewrittenElement() {
+
+        Map<Integer, Animal> map = convertListService.convertListBeforeJava8(duplicatedIdList);
+
+        assertThat(map.values(), hasSize(4));
+        assertThat(map.values(), hasItem(duplicatedIdList.get(4)));
+    }
+
+    @Test
+    public void givenADupIdList_whenConvertWithApacheCommons_thenReturnMapWithRewrittenElement() {
+
+        Map<Integer, Animal> map = convertListService.convertListWithApacheCommons(duplicatedIdList);
+
+        assertThat(map.values(), hasSize(4));
+        assertThat(map.values(), hasItem(duplicatedIdList.get(4)));
+    }
+
+    @Test(expected = IllegalStateException.class)
+    public void givenADupIdList_whenConvertAfterJava8_thenException() {
+
+        convertListService.convertListAfterJava8(duplicatedIdList);
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void givenADupIdList_whenConvertWithGuava_thenException() {
+
+        convertListService.convertListWithGuava(duplicatedIdList);
+
+    }
+
+}

core-java-collections/src/test/java/com/baeldung/java/set/HashSetInitalizingUnitTest.java

@@ -50,22 +50,9 @@ public class HashSetInitalizingUnitTest {
 
     @Test
     public void whenUsingJava8_usingCollectOnStream_thenCorrectSize() {
-        Set<String> set = Stream.of("a", "b", "c").collect(Collectors.toSet());
+        Set<String> set = Stream.of("a", "b", "c").collect(Collectors.toCollection(HashSet::new));
         assertEquals(3, set.size());
     }
-    @Test
-    public void whenUsingJava8_fromStringArray_thenCorrectSize() {
-        String[] stringArray = {"a","b","c"};
-        Set<String> set = Arrays.stream(stringArray).collect(Collectors.toCollection(HashSet::new));
-        assertEquals(3, set.size());
-    }
-
-    // Requires Java9 - uncomment if you are using Java 9 or higher
-    /*@Test
-    public void whenUsingJava9_usingCollectOnStream_thenCorrectSize() {
-        Set set = Set.of("a", "b", "c");
-        assertEquals(3, set.size());
-    }*/
 
     @Test
     public void whenUsingGoogleGuava_createMutableSet_thenCorrectSize() {
@@ -78,4 +65,6 @@ public class HashSetInitalizingUnitTest {
         Set<String> set = ImmutableSet.of("a", "b", "c");
         assertEquals(3, set.size());
     }
+  
 }
+

core-java/pom.xml

@@ -1,5 +1,5 @@
 <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">
+         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>core-java</artifactId>
@@ -73,9 +73,10 @@
         <dependency>
             <groupId>org.assertj</groupId>
             <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
+            <version>${assertj-core.version}</version>
             <scope>test</scope>
         </dependency>
+
         <dependency>
             <groupId>commons-codec</groupId>
             <artifactId>commons-codec</artifactId>
@@ -146,6 +147,45 @@
             <artifactId>icu4j</artifactId>
             <version>${icu4j.version}</version>
         </dependency>
+        <!-- Mime Type Resolution Libraries -->
+        <dependency>
+            <groupId>org.apache.tika</groupId>
+            <artifactId>tika-core</artifactId>
+            <version>${tika.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>net.sf.jmimemagic</groupId>
+            <artifactId>jmimemagic</artifactId>
+            <version>${jmime-magic.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-dbcp2</artifactId>
+            <version>${commons-dbcp2.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.zaxxer</groupId>
+            <artifactId>HikariCP</artifactId>
+            <version>${HikariCP.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.mchange</groupId>
+            <artifactId>c3p0</artifactId>
+            <version>${c3p0.version}</version>
+        </dependency>
+        <!-- instrumentation -->
+        <dependency>
+            <groupId>org.javassist</groupId>
+            <artifactId>javassist</artifactId>
+            <version>${javaassist.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.sun</groupId>
+            <artifactId>tools</artifactId>
+            <version>1.8.0</version>
+            <scope>system</scope>
+            <systemPath>${java.home}/../lib/tools.jar</systemPath>
+        </dependency>
     </dependencies>
 
     <build>
@@ -348,6 +388,7 @@
                     <plugin>
                         <groupId>org.codehaus.mojo</groupId>
                         <artifactId>exec-maven-plugin</artifactId>
+                        <version>${exec-maven-plugin.version}</version>
                         <executions>
                             <execution>
                                 <id>run-benchmarks</id>
@@ -372,9 +413,115 @@
                 </plugins>
             </build>
         </profile>
+
+        <!-- java instrumentation profiles to build jars -->
+        <profile>
+            <id>buildAgentLoader</id>
+            <build>
+                <plugins>
+                    <plugin>
+                        <groupId>org.apache.maven.plugins</groupId>
+                        <artifactId>maven-jar-plugin</artifactId>
+                        <executions>
+                            <execution>
+                                <phase>package</phase>
+                                <goals>
+                                    <goal>jar</goal>
+                                </goals>
+                                <configuration>
+                                    <classifier>agentLoader</classifier>
+                                    <classesDirectory>target/classes</classesDirectory>
+                                    <archive>
+                                        <manifest>
+                                            <addClasspath>true</addClasspath>
+                                        </manifest>
+                                        <manifestFile>${project.build.outputDirectory}/META-INF/MANIFEST.MF</manifestFile>
+                                    </archive>
+
+                                    <includes>
+                                        <include>com/baeldung/instrumentation/application/AgentLoader.class</include>
+                                        <include>com/baeldung/instrumentation/application/Launcher.class</include>
+                                    </includes>
+                                </configuration>
+                            </execution>
+                        </executions>
+                    </plugin>
+                </plugins>
+            </build>
+        </profile>
+        <profile>
+            <id>buildApplication</id>
+            <build>
+                <plugins>
+                    <plugin>
+                        <groupId>org.apache.maven.plugins</groupId>
+                        <artifactId>maven-jar-plugin</artifactId>
+                        <executions>
+                            <execution>
+                                <phase>package</phase>
+                                <goals>
+                                    <goal>jar</goal>
+                                </goals>
+                                <configuration>
+                                    <classifier>application</classifier>
+                                    <classesDirectory>target/classes</classesDirectory>
+                                    <archive>
+                                        <manifest>
+                                            <addClasspath>true</addClasspath>
+                                        </manifest>
+                                        <manifestFile>${project.build.outputDirectory}/META-INF/MANIFEST.MF</manifestFile>
+                                    </archive>
+
+                                    <includes>
+                                        <include>com/baeldung/instrumentation/application/MyAtm.class</include>
+                                        <include>com/baeldung/instrumentation/application/MyAtmApplication.class</include>
+                                        <include>com/baeldung/instrumentation/application/Launcher.class</include>
+                                    </includes>
+                                </configuration>
+                            </execution>
+                        </executions>
+                    </plugin>
+                </plugins>
+            </build>
+        </profile>
+        <profile>
+            <id>buildAgent</id>
+            <build>
+                <plugins>
+                    <plugin>
+                        <groupId>org.apache.maven.plugins</groupId>
+                        <artifactId>maven-jar-plugin</artifactId>
+                        <executions>
+                            <execution>
+                                <phase>package</phase>
+                                <goals>
+                                    <goal>jar</goal>
+                                </goals>
+                                <configuration>
+                                    <classifier>agent</classifier>
+                                    <classesDirectory>target/classes</classesDirectory>
+                                    <archive>
+                                        <manifest>
+                                            <addClasspath>true</addClasspath>
+                                        </manifest>
+                                        <manifestFile>${project.build.outputDirectory}/META-INF/MANIFEST.MF</manifestFile>
+                                    </archive>
+
+                                    <includes>
+                                        <include>com/baeldung/instrumentation/agent/AtmTransformer.class</include>
+                                        <include>com/baeldung/instrumentation/agent/MyInstrumentationAgent.class</include>
+                                    </includes>
+                                </configuration>
+                            </execution>
+                        </executions>
+                    </plugin>
+                </plugins>
+            </build>
+        </profile>
     </profiles>
 
     <properties>
+        
         <!-- marshalling -->
         <jackson.version>2.8.5</jackson.version>
         <gson.version>2.8.2</gson.version>
@@ -395,16 +542,23 @@
         <vavr.version>0.9.0</vavr.version>
 
         <!-- testing -->
-        <assertj.version>3.6.1</assertj.version>
+        <assertj-core.version>3.10.0</assertj-core.version>
+
+        <!-- JDBC pooling frameworks -->
+        <commons-dbcp2.version>2.4.0</commons-dbcp2.version>
+        <HikariCP.version>3.2.0</HikariCP.version>
+        <c3p0.version>0.9.5.2</c3p0.version>
         
         <!-- maven plugins -->
         <maven-surefire-plugin.version>2.19.1</maven-surefire-plugin.version>
         <springframework.spring-web.version>4.3.4.RELEASE</springframework.spring-web.version>
         <springframework.boot.spring-boot-starter.version>1.5.8.RELEASE</springframework.boot.spring-boot-starter.version>
+        
         <javamoney.moneta.version>1.1</javamoney.moneta.version>
         <h2database.version>1.4.197</h2database.version>
         <esapi.version>2.1.0.1</esapi.version>
         <jmh-core.version>1.19</jmh-core.version>
+       
         <jmh-generator-annprocess.version>1.19</jmh-generator-annprocess.version>
         <maven-javadoc-plugin.version>3.0.0-M1</maven-javadoc-plugin.version>
         <javax.mail.version>1.5.0-b01</javax.mail.version>
@@ -412,7 +566,13 @@
         <onejar-maven-plugin.version>1.4.4</onejar-maven-plugin.version>
         <maven-shade-plugin.version>3.1.1</maven-shade-plugin.version>
         <spring-boot-maven-plugin.version>2.0.3.RELEASE</spring-boot-maven-plugin.version>
+        <exec-maven-plugin.version>1.6.0</exec-maven-plugin.version>
         <icu4j.version>61.1</icu4j.version>
+        <!-- Mime Type Libraries -->
+        <tika.version>1.18</tika.version>
+        <jmime-magic.version>0.1.5</jmime-magic.version>
+        <!-- instrumentation -->
+        <javaassist.version>3.21.0-GA</javaassist.version>
     </properties>
 
 </project>

core-java/src/main/java/com/baeldung/connectionpool/connectionpools/BasicConnectionPool.java

@@ -0,0 +1,85 @@
+package com.baeldung.connectionpool.connectionpools;
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.SQLException;
+import java.util.ArrayList;
+import java.util.List;
+
+public class BasicConnectionPool implements ConnectionPool {
+
+    private final String url;
+    private final String user;
+    private final String password;
+    private final List<Connection> connectionPool;
+    private final List<Connection> usedConnections = new ArrayList<>();
+    private static final int INITIAL_POOL_SIZE = 10;
+    private final int MAX_POOL_SIZE = 20;
+    
+    public static BasicConnectionPool create(String url, String user, String password) throws SQLException {
+        List<Connection> pool = new ArrayList<>(INITIAL_POOL_SIZE);
+        for (int i = 0; i < INITIAL_POOL_SIZE; i++) {
+            pool.add(createConnection(url, user, password));
+        }
+        return new BasicConnectionPool(url, user, password, pool);
+    }
+    
+    private BasicConnectionPool(String url, String user, String password, List<Connection> connectionPool) {
+        this.url = url;
+        this.user = user;
+        this.password = password;
+        this.connectionPool = connectionPool;
+    }
+    
+    @Override
+    public Connection getConnection() throws SQLException {
+        if (connectionPool.isEmpty()) {
+            if (usedConnections.size() < MAX_POOL_SIZE) {
+                connectionPool.add(createConnection(url, user, password));
+            } else {
+                throw new RuntimeException("Maximum pool size reached, no available connections!");
+            }
+        }
+
+        Connection connection = connectionPool.remove(connectionPool.size() - 1);
+        usedConnections.add(connection);
+        return connection;
+    }
+    
+    @Override
+    public boolean releaseConnection(Connection connection) {
+        connectionPool.add(connection);
+        return usedConnections.remove(connection);
+    }
+    
+    private static Connection createConnection(String url, String user, String password) throws SQLException {
+        return DriverManager.getConnection(url, user, password);
+    }
+    
+    public int getSize() {
+        return connectionPool.size() + usedConnections.size();
+    }
+
+    @Override
+    public String getUrl() {
+        return url;
+    }
+
+    @Override
+    public String getUser() {
+        return user;
+    }
+
+    @Override
+    public String getPassword() {
+        return password;
+    }
+
+    public void shutdown() throws SQLException {
+        usedConnections.forEach(this::releaseConnection);
+        for (Connection c : connectionPool) {
+            c.close();
+        }
+        connectionPool.clear();
+    }
+}

core-java/src/main/java/com/baeldung/connectionpool/connectionpools/C3poDataSource.java

@@ -0,0 +1,28 @@
+package com.baeldung.connectionpool.connectionpools;
+
+import com.mchange.v2.c3p0.ComboPooledDataSource;
+import java.beans.PropertyVetoException;
+import java.sql.Connection;
+import java.sql.SQLException;
+
+public class C3poDataSource {
+
+    private static final ComboPooledDataSource cpds = new ComboPooledDataSource();
+
+    static {
+        try {
+            cpds.setDriverClass("org.h2.Driver");
+            cpds.setJdbcUrl("jdbc:h2:mem:test");
+            cpds.setUser("user");
+            cpds.setPassword("password");
+        } catch (PropertyVetoException e) {
+            e.printStackTrace();
+        }
+    }
+    
+    public static Connection getConnection() throws SQLException {
+        return cpds.getConnection();
+    }
+    
+    private C3poDataSource(){}
+}

core-java/src/main/java/com/baeldung/connectionpool/connectionpools/ConnectionPool.java

@@ -0,0 +1,18 @@
+package com.baeldung.connectionpool.connectionpools;
+
+import java.sql.Connection;
+import java.sql.SQLException;
+import java.util.List;
+
+public interface ConnectionPool {
+
+    Connection getConnection() throws SQLException;
+    
+    boolean releaseConnection(Connection connection);
+    
+    String getUrl();
+    
+    String getUser();
+
+    String getPassword();
+}   

core-java/src/main/java/com/baeldung/connectionpool/connectionpools/DBCPDataSource.java

@@ -0,0 +1,25 @@
+package com.baeldung.connectionpool.connectionpools;
+
+import java.sql.Connection;
+import java.sql.SQLException;
+import org.apache.commons.dbcp2.BasicDataSource;
+
+public class DBCPDataSource {
+    
+    private static final BasicDataSource ds = new BasicDataSource();
+    
+    static {
+        ds.setUrl("jdbc:h2:mem:test");
+        ds.setUsername("user");
+        ds.setPassword("password");
+        ds.setMinIdle(5);
+        ds.setMaxIdle(10);
+        ds.setMaxOpenPreparedStatements(100);
+    }
+    
+    public static Connection getConnection() throws SQLException {
+        return ds.getConnection();
+    }
+    
+    private DBCPDataSource(){}
+}

core-java/src/main/java/com/baeldung/connectionpool/connectionpools/HikariCPDataSource.java

@@ -0,0 +1,28 @@
+package com.baeldung.connectionpool.connectionpools;
+
+import com.zaxxer.hikari.HikariConfig;
+import com.zaxxer.hikari.HikariDataSource;
+import java.sql.Connection;
+import java.sql.SQLException;
+
+public class HikariCPDataSource {
+    
+    private static final HikariConfig config = new HikariConfig();
+    private static final HikariDataSource ds;
+    
+    static {
+        config.setJdbcUrl("jdbc:h2:mem:test");
+        config.setUsername("user");
+        config.setPassword("password");
+        config.addDataSourceProperty("cachePrepStmts", "true");
+        config.addDataSourceProperty("prepStmtCacheSize", "250");
+        config.addDataSourceProperty("prepStmtCacheSqlLimit", "2048");
+        ds = new HikariDataSource(config);
+    }
+    
+    public static Connection getConnection() throws SQLException {
+        return ds.getConnection();
+    }
+    
+    private HikariCPDataSource(){}
+}

core-java/src/main/java/com/baeldung/instrumentation/agent/AtmTransformer.java

@@ -0,0 +1,70 @@
+package com.baeldung.instrumentation.agent;
+
+import javassist.CannotCompileException;
+import javassist.ClassPool;
+import javassist.CtClass;
+import javassist.CtMethod;
+import javassist.NotFoundException;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.IOException;
+import java.lang.instrument.ClassFileTransformer;
+import java.lang.instrument.IllegalClassFormatException;
+import java.security.ProtectionDomain;
+
+public class AtmTransformer implements ClassFileTransformer {
+
+    private static Logger LOGGER = LoggerFactory.getLogger(AtmTransformer.class);
+
+    private static final String WITHDRAW_MONEY_METHOD = "withdrawMoney";
+
+    /** The internal form class name of the class to transform */
+    private String targetClassName;
+    /** The class loader of the class we want to transform */
+    private ClassLoader targetClassLoader;
+
+    public AtmTransformer(String targetClassName, ClassLoader targetClassLoader) {
+        this.targetClassName = targetClassName;
+        this.targetClassLoader = targetClassLoader;
+    }
+
+    @Override
+    public byte[] transform(ClassLoader loader, String className, Class<?> classBeingRedefined,
+            ProtectionDomain protectionDomain, byte[] classfileBuffer) throws IllegalClassFormatException {
+        byte[] byteCode = classfileBuffer;
+
+        String finalTargetClassName = this.targetClassName.replaceAll("\\.", "/"); //replace . with /
+        if (!className.equals(finalTargetClassName)) {
+            return byteCode;
+        }
+
+        if (className.equals(finalTargetClassName) && loader.equals(targetClassLoader)) {
+            LOGGER.info("[Agent] Transforming class MyAtm");
+            try {
+                ClassPool cp = ClassPool.getDefault();
+                CtClass cc = cp.get(targetClassName);
+                CtMethod m = cc.getDeclaredMethod(WITHDRAW_MONEY_METHOD);
+                m.addLocalVariable("startTime", CtClass.longType);
+                m.insertBefore("startTime = System.currentTimeMillis();");
+
+                StringBuilder endBlock = new StringBuilder();
+
+                m.addLocalVariable("endTime", CtClass.longType);
+                m.addLocalVariable("opTime", CtClass.longType);
+                endBlock.append("endTime = System.currentTimeMillis();");
+                endBlock.append("opTime = (endTime-startTime)/1000;");
+
+                endBlock.append("LOGGER.info(\"[Application] Withdrawal operation completed in:\" + opTime + \" seconds!\");");
+
+                m.insertAfter(endBlock.toString());
+
+                byteCode = cc.toBytecode();
+                cc.detach();
+            } catch (NotFoundException | CannotCompileException | IOException e) {
+                LOGGER.error("Exception", e);
+            }
+        }
+        return byteCode;
+    }
+}

core-java/src/main/java/com/baeldung/instrumentation/agent/MyInstrumentationAgent.java

@@ -0,0 +1,59 @@
+package com.baeldung.instrumentation.agent;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.lang.instrument.Instrumentation;
+
+public class MyInstrumentationAgent {
+    private static Logger LOGGER = LoggerFactory.getLogger(MyInstrumentationAgent.class);
+
+    public static void premain(String agentArgs, Instrumentation inst) {
+        LOGGER.info("[Agent] In premain method");
+
+        String className = "com.baeldung.instrumentation.application.MyAtm";
+        transformClass(className,inst);
+    }
+
+    public static void agentmain(String agentArgs, Instrumentation inst) {
+        LOGGER.info("[Agent] In agentmain method");
+
+        String className = "com.baeldung.instrumentation.application.MyAtm";
+        transformClass(className,inst);
+    }
+
+    private static void transformClass(String className, Instrumentation instrumentation) {
+        Class<?> targetCls = null;
+        ClassLoader targetClassLoader = null;
+        // see if we can get the class using forName
+        try {
+            targetCls = Class.forName(className);
+            targetClassLoader = targetCls.getClassLoader();
+            transform(targetCls, targetClassLoader, instrumentation);
+            return;
+        } catch (Exception ex) {
+            LOGGER.error("Class [{}] not found with Class.forName");
+        }
+        // otherwise iterate all loaded classes and find what we want
+        for(Class<?> clazz: instrumentation.getAllLoadedClasses()) {
+            if(clazz.getName().equals(className)) {
+                targetCls = clazz;
+                targetClassLoader = targetCls.getClassLoader();
+                transform(targetCls, targetClassLoader, instrumentation);
+                return;
+            }
+        }
+        throw new RuntimeException("Failed to find class [" + className + "]");
+    }
+
+    private static void transform(Class<?> clazz, ClassLoader classLoader, Instrumentation instrumentation) {
+        AtmTransformer dt = new AtmTransformer(clazz.getName(), classLoader);
+        instrumentation.addTransformer(dt, true);
+        try {
+            instrumentation.retransformClasses(clazz);
+        } catch (Exception ex) {
+            throw new RuntimeException("Transform failed for class: [" + clazz.getName() + "]", ex);
+        }
+    }
+
+}

core-java/src/main/java/com/baeldung/instrumentation/application/AgentLoader.java

@@ -0,0 +1,46 @@
+package com.baeldung.instrumentation.application;
+
+import com.sun.tools.attach.VirtualMachine;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.File;
+import java.util.Optional;
+
+/**
+ * Created by adi on 6/10/18.
+ */
+public class AgentLoader {
+    private static Logger LOGGER = LoggerFactory.getLogger(AgentLoader.class);
+
+    public static void run(String[] args) {
+        String agentFilePath = "/home/adi/Desktop/agent-1.0.0-jar-with-dependencies.jar";
+        String applicationName = "MyAtmApplication";
+
+        //iterate all jvms and get the first one that matches our application name
+        Optional<String> jvmProcessOpt = Optional.ofNullable(VirtualMachine.list()
+          .stream()
+          .filter(jvm -> {
+              LOGGER.info("jvm:{}", jvm.displayName());
+              return jvm.displayName().contains(applicationName);
+          })
+          .findFirst().get().id());
+
+        if(!jvmProcessOpt.isPresent()) {
+            LOGGER.error("Target Application not found");
+            return;
+        }
+        File agentFile = new File(agentFilePath);
+        try {
+            String jvmPid = jvmProcessOpt.get();
+            LOGGER.info("Attaching to target JVM with PID: " + jvmPid);
+            VirtualMachine jvm = VirtualMachine.attach(jvmPid);
+            jvm.loadAgent(agentFile.getAbsolutePath());
+            jvm.detach();
+            LOGGER.info("Attached to target JVM and loaded Java agent successfully");
+        } catch (Exception e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+}

core-java/src/main/java/com/baeldung/instrumentation/application/Launcher.java

@@ -0,0 +1,14 @@
+package com.baeldung.instrumentation.application;
+
+/**
+ * Created by adi on 6/14/18.
+ */
+public class Launcher {
+    public static void main(String[] args) throws Exception {
+        if(args[0].equals("StartMyAtmApplication")) {
+            new MyAtmApplication().run(args);
+        } else if(args[0].equals("LoadAgent")) {
+            new AgentLoader().run(args);
+        }
+    }
+}

core-java/src/main/java/com/baeldung/instrumentation/application/MyAtm.java

@@ -0,0 +1,19 @@
+package com.baeldung.instrumentation.application;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Created by adi on 6/11/18.
+ */
+public class MyAtm {
+    private static Logger LOGGER = LoggerFactory.getLogger(MyAtm.class);
+
+    private static final int account = 10;
+
+    public static void withdrawMoney(int amount) throws InterruptedException {
+        Thread.sleep(2000l); //processing going on here
+        LOGGER.info("[Application] Successful Withdrawal of [{}] units!", amount);
+
+    }
+}

core-java/src/main/java/com/baeldung/instrumentation/application/MyAtmApplication.java

@@ -0,0 +1,19 @@
+package com.baeldung.instrumentation.application;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class MyAtmApplication {
+
+    private static Logger LOGGER = LoggerFactory.getLogger(MyAtmApplication.class);
+
+    public static void run(String[] args) throws Exception {
+        LOGGER.info("[Application] Starting ATM application");
+        MyAtm.withdrawMoney(Integer.parseInt(args[2]));
+
+        Thread.sleep(Long.valueOf(args[1]));
+
+        MyAtm.withdrawMoney(Integer.parseInt(args[3]));
+    }
+
+}

core-java/src/main/resources/META-INF/MANIFEST.MF

@@ -0,0 +1,5 @@
+Agent-Class: com.baeldung.instrumentation.agent.MyInstrumentationAgent
+Can-Redefine-Classes: true
+Can-Retransform-Classes: true
+Premain-Class: com.baeldung.instrumentation.agent.MyInstrumentationAgent
+Main-Class: com.baeldung.instrumentation.application.Launcher

core-java/src/main/resources/log4j2.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Configuration status="WARN">
+    <Appenders>
+        <Console name="Console" target="SYSTEM_OUT">
+            <PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level - %msg%n"/>
+        </Console>
+    </Appenders>
+    <Loggers>
+        <Root level="debug">
+            <AppenderRef ref="Console"/>
+        </Root>
+    </Loggers>
+</Configuration>

core-java/src/test/java/com/baeldung/connectionpool/BasicConnectionPoolUnitTest.java

@@ -0,0 +1,69 @@
+package com.baeldung.connectionpool;
+
+import com.baeldung.connectionpool.connectionpools.BasicConnectionPool;
+import com.baeldung.connectionpool.connectionpools.ConnectionPool;
+import java.sql.Connection;
+import java.sql.SQLException;
+import java.util.List;
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+public class BasicConnectionPoolUnitTest {
+    
+    private static ConnectionPool connectionPool;
+
+    @BeforeClass
+    public static void setUpBasicConnectionPoolInstance() throws SQLException {
+        connectionPool = BasicConnectionPool.create("jdbc:h2:mem:test", "user", "password");
+    }
+    
+    @Test
+    public void givenBasicConnectionPoolInstance_whenCalledgetConnection_thenCorrect() throws Exception {
+        assertTrue(connectionPool.getConnection().isValid(1));
+    }
+    
+    @Test
+    public void givenBasicConnectionPoolInstance_whenCalledreleaseConnection_thenCorrect() throws Exception {
+        Connection connection = connectionPool.getConnection();
+        assertThat(connectionPool.releaseConnection(connection)).isTrue();
+    }
+    
+    @Test
+    public void givenBasicConnectionPoolInstance_whenCalledgetUrl_thenCorrect() {
+        assertThat(connectionPool.getUrl()).isEqualTo("jdbc:h2:mem:test");
+    }
+    
+    @Test
+    public void givenBasicConnectionPoolInstance_whenCalledgetUser_thenCorrect() {
+        assertThat(connectionPool.getUser()).isEqualTo("user");
+    }
+    
+    @Test
+    public void givenBasicConnectionPoolInstance_whenCalledgetPassword_thenCorrect() {
+        assertThat(connectionPool.getPassword()).isEqualTo("password");
+    }
+
+    @Test(expected = RuntimeException.class)
+    public void givenBasicConnectionPoolInstance_whenAskedForMoreThanMax_thenError() throws Exception {
+        // this test needs to be independent so it doesn't share the same connection pool as other tests
+        ConnectionPool cp = BasicConnectionPool.create("jdbc:h2:mem:test", "user", "password");
+        final int MAX_POOL_SIZE = 20;
+        for (int i = 0; i < MAX_POOL_SIZE + 1; i++) {
+            cp.getConnection();
+        }
+        fail();
+    }
+
+    @Test
+    public void givenBasicConnectionPoolInstance_whenSutdown_thenEmpty() throws Exception {
+        ConnectionPool cp = BasicConnectionPool.create("jdbc:h2:mem:test", "user", "password");
+        assertThat(((BasicConnectionPool)cp).getSize()).isEqualTo(10);
+
+        ((BasicConnectionPool) cp).shutdown();
+        assertThat(((BasicConnectionPool)cp).getSize()).isEqualTo(0);
+    }
+}

core-java/src/test/java/com/baeldung/connectionpool/C3poDataSourceUnitTest.java

@@ -0,0 +1,14 @@
+package com.baeldung.connectionpool;
+
+import com.baeldung.connectionpool.connectionpools.C3poDataSource;
+import java.sql.SQLException;
+import static org.junit.Assert.assertTrue;
+import org.junit.Test;
+
+public class C3poDataSourceUnitTest {
+    
+    @Test
+    public void givenC3poDataSourceClass_whenCalledgetConnection_thenCorrect() throws SQLException {
+        assertTrue(C3poDataSource.getConnection().isValid(1));
+    }   
+}

core-java/src/test/java/com/baeldung/connectionpool/DBCPDataSourceUnitTest.java

@@ -0,0 +1,14 @@
+package com.baeldung.connectionpool;
+
+import com.baeldung.connectionpool.connectionpools.DBCPDataSource;
+import java.sql.SQLException;
+import static org.junit.Assert.assertTrue;
+import org.junit.Test;
+
+public class DBCPDataSourceUnitTest {
+    
+    @Test
+    public void givenDBCPDataSourceClass_whenCalledgetConnection_thenCorrect() throws SQLException {
+        assertTrue(DBCPDataSource.getConnection().isValid(1));
+    }   
+}

core-java/src/test/java/com/baeldung/connectionpool/HikariCPDataSourceUnitTest.java

@@ -0,0 +1,14 @@
+package com.baeldung.connectionpool;
+
+import com.baeldung.connectionpool.connectionpools.HikariCPDataSource;
+import java.sql.SQLException;
+import static org.junit.Assert.assertTrue;
+import org.junit.Test;
+
+public class HikariCPDataSourceUnitTest {
+    
+    @Test
+    public void givenHikariDataSourceClass_whenCalledgetConnection_thenCorrect() throws SQLException {
+        assertTrue(HikariCPDataSource.getConnection().isValid(1));
+    }   
+}

core-java/src/test/java/com/baeldung/java/mimetype/MimeTypeUnitTest.java

@@ -0,0 +1,131 @@
+package com.baeldung.java.mimetype;
+
+import static org.junit.Assert.assertEquals;
+
+import java.io.File;
+import java.io.IOException;
+import java.net.FileNameMap;
+import java.net.MalformedURLException;
+import java.net.URLConnection;
+import java.nio.file.Files;
+import java.nio.file.Path;
+
+import javax.activation.MimetypesFileTypeMap;
+
+import org.apache.tika.Tika;
+import org.junit.Test;
+
+import net.sf.jmimemagic.Magic;
+import net.sf.jmimemagic.MagicException;
+import net.sf.jmimemagic.MagicMatch;
+import net.sf.jmimemagic.MagicMatchNotFoundException;
+import net.sf.jmimemagic.MagicParseException;
+
+/**
+ * Test class demonstrating various strategies to resolve MIME type of a file.
+ * @author tritty
+ *
+ */
+public class MimeTypeUnitTest {
+    /**
+     * Expected Ouput.
+     */
+    public static final String PNG_EXT = "image/png";
+
+    /**
+     * The location of the file.
+     */
+    public static final String FILE_LOC = "src/test/resources/product.png";
+
+    /**
+     * Test method, demonstrating usage in Java 7.
+     * 
+     * @throws IOException
+     */
+    @Test
+    public void whenUsingJava7_thenSuccess() throws IOException {
+        final Path path = new File(FILE_LOC).toPath();
+        final String mimeType = Files.probeContentType(path);
+        assertEquals(mimeType, PNG_EXT);
+    }
+
+    /**
+     * Test method demonstrating the usage of URLConnection to resolve MIME type.
+     * 
+     * @throws MalformedURLException
+     * @throws IOException
+     */
+    @Test
+    public void whenUsingGetContentType_thenSuccess() throws MalformedURLException, IOException {
+        final File file = new File(FILE_LOC);
+        final URLConnection connection = file.toURL()
+            .openConnection();
+        final String mimeType = connection.getContentType();
+        assertEquals(mimeType, PNG_EXT);
+    }
+
+    /**
+     * Test method demonstrating the usage of URLConnection to resolve MIME type.
+     * 
+     */
+    @Test
+    public void whenUsingGuessContentTypeFromName_thenSuccess() {
+        final File file = new File(FILE_LOC);
+        final String mimeType = URLConnection.guessContentTypeFromName(file.getName());
+        assertEquals(mimeType, PNG_EXT);
+    }
+
+    /**
+     * Test method demonstrating the usage of FileNameMap from URLConnection
+     * to resolve MIME type of a file.
+     * 
+     */
+    @Test
+    public void whenUsingGetFileNameMap_thenSuccess() {
+        final File file = new File(FILE_LOC);
+        final FileNameMap fileNameMap = URLConnection.getFileNameMap();
+        final String mimeType = fileNameMap.getContentTypeFor(file.getName());
+        assertEquals(mimeType, PNG_EXT);
+    }
+
+    /**
+     * Test method demonstrating the usage of MimeTypesFileTypeMap for resolution of 
+     * MIME type.
+     * 
+     */
+    @Test
+    public void whenUsingMimeTypesFileTypeMap_thenSuccess() {
+        final File file = new File(FILE_LOC);
+        final MimetypesFileTypeMap fileTypeMap = new MimetypesFileTypeMap();
+        final String mimeType = fileTypeMap.getContentType(file.getName());
+        assertEquals(mimeType, PNG_EXT);
+    }
+
+    /**
+     * Test method demonstrating usage of jMimeMagic.
+     * 
+     * @throws MagicParseException
+     * @throws MagicMatchNotFoundException
+     * @throws MagicException
+     */
+    @Test
+    public void whenUsingJmimeMagic_thenSuccess() throws MagicParseException, MagicMatchNotFoundException, MagicException {
+        final File file = new File(FILE_LOC);
+        final Magic magic = new Magic();
+        final MagicMatch match = magic.getMagicMatch(file, false);
+        assertEquals(match.getMimeType(), PNG_EXT);
+    }
+
+    /**
+     * Test method demonstrating usage of Apache Tika.
+     * 
+     * @throws IOException
+     */
+    @Test
+    public void whenUsingTika_thenSuccess() throws IOException {
+        final File file = new File(FILE_LOC);
+        final Tika tika = new Tika();
+        final String mimeType = tika.detect(file);
+        assertEquals(mimeType, PNG_EXT);
+    }
+}

core-kotlin/pom.xml

@@ -60,7 +60,6 @@
             <groupId>org.jetbrains.kotlin</groupId>
             <artifactId>kotlin-reflect</artifactId>
             <version>${kotlin-reflect.version}</version>
-            <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>org.jetbrains.kotlinx</groupId>
@@ -224,10 +223,11 @@
     </build>
 
     <properties>
-        <kotlin-maven-plugin.version>1.2.41</kotlin-maven-plugin.version>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <kotlin-test-junit.version>1.2.41</kotlin-test-junit.version>
+        <kotlin-maven-plugin.version>1.2.51</kotlin-maven-plugin.version>
-        <kotlin-stdlib.version>1.2.41</kotlin-stdlib.version>
+        <kotlin-test-junit.version>1.2.51</kotlin-test-junit.version>
-        <kotlin-reflect.version>1.2.41</kotlin-reflect.version>
+        <kotlin-stdlib.version>1.2.51</kotlin-stdlib.version>
+        <kotlin-reflect.version>1.2.51</kotlin-reflect.version>
         <kotlinx.version>0.22.5</kotlinx.version>
         <ktor.io.version>0.9.2</ktor.io.version>
         <mockito-kotlin.version>1.5.0</mockito-kotlin.version>

core-kotlin/src/main/kotlin/com/baeldung/kotlin/logging/LoggerAsExtensionOnAny.kt

@@ -0,0 +1,30 @@
+package com.baeldung.kotlin.logging
+
+import org.slf4j.Logger
+
+open class LoggerAsExtensionOnAny {
+    val logger = logger()
+
+    fun log(s: String) {
+        logger().info(s)
+        logger.info(s)
+    }
+}
+
+class ExtensionSubclass : LoggerAsExtensionOnAny()
+
+fun <T : Any> T.logger(): Logger = getLogger(getClassForLogging(javaClass))
+
+fun main(args: Array<String>) {
+    LoggerAsExtensionOnAny().log("test")
+    ExtensionSubclass().log("sub")
+    "foo".logger().info("foo")
+    1.logger().info("uh-oh!")
+    SomeOtherClass().logger()
+}
+
+class SomeOtherClass {
+    fun logger(): String {
+        return "foo"
+    }
+}

core-kotlin/src/main/kotlin/com/baeldung/kotlin/logging/LoggerAsExtensionOnMarkerInterface.kt

@@ -0,0 +1,30 @@
+package com.baeldung.kotlin.logging
+
+import org.slf4j.Logger
+import org.slf4j.LoggerFactory
+
+interface Logging
+
+inline fun <reified T : Logging> T.logger(): Logger =
+        //Wrong logger name!
+        //LoggerFactory.getLogger(javaClass.name + " w/interface")
+        LoggerFactory.getLogger(getClassForLogging(T::class.java).name + " w/interface")
+
+open class LoggerAsExtensionOnMarkerInterface : Logging {
+    companion object : Logging {
+        val logger = logger()
+    }
+
+    fun log(s: String) {
+        logger().info(s)
+        logger.info(s)
+    }
+}
+
+class MarkerExtensionSubclass : LoggerAsExtensionOnMarkerInterface()
+
+fun main(args: Array<String>) {
+    LoggerAsExtensionOnMarkerInterface().log("test")
+    MarkerExtensionSubclass().log("sub")
+    "foo".logger().info("foo")
+}

core-kotlin/src/main/kotlin/com/baeldung/kotlin/logging/LoggerAsProperty.kt

@@ -0,0 +1,17 @@
+package com.baeldung.kotlin.logging
+
+open class LoggerAsProperty {
+    private val logger = getLogger(javaClass)
+
+    fun log(s: String) {
+        logger.info(s)
+    }
+
+}
+
+class PropertySubclass : LoggerAsProperty()
+
+fun main(args: Array<String>) {
+    LoggerAsProperty().log("test")
+    PropertySubclass().log("sub")
+}

core-kotlin/src/main/kotlin/com/baeldung/kotlin/logging/LoggerAsPropertyDelegate.kt

@@ -0,0 +1,47 @@
+package com.baeldung.kotlin.logging
+
+import org.slf4j.Logger
+import kotlin.properties.ReadOnlyProperty
+import kotlin.reflect.KProperty
+
+open class LoggerAsPropertyDelegate {
+    private val lazyLogger by lazyLogger()
+    protected val logger by LoggerDelegate()
+    private val logger2 = logger
+
+    companion object {
+        private val lazyLoggerComp by lazyLogger()
+        private val loggerComp by LoggerDelegate()
+    }
+
+    open fun log(s: String) {
+        logger.info(s)
+        logger2.info(s)
+        lazyLogger.info(s)
+        loggerComp.info(s)
+        lazyLoggerComp.info(s)
+    }
+
+}
+
+class DelegateSubclass : LoggerAsPropertyDelegate() {
+    override fun log(s: String) {
+        logger.info("-- in sub")
+        super.log(s)
+    }
+}
+
+fun lazyLogger(forClass: Class<*>): Lazy<Logger> =
+        lazy { getLogger(getClassForLogging(forClass)) }
+
+fun <T : Any> T.lazyLogger(): Lazy<Logger> = lazyLogger(javaClass)
+
+fun main(args: Array<String>) {
+    LoggerAsPropertyDelegate().log("test")
+    DelegateSubclass().log("sub")
+}
+
+class LoggerDelegate<in R : Any> : ReadOnlyProperty<R, Logger> {
+    override fun getValue(thisRef: R, property: KProperty<*>) =
+        getLogger(getClassForLogging(thisRef.javaClass))
+}

core-kotlin/src/main/kotlin/com/baeldung/kotlin/logging/LoggerInCompanionObject.kt

@@ -0,0 +1,44 @@
+package com.baeldung.kotlin.logging
+
+open class LoggerInCompanionObject {
+    companion object {
+        private val loggerWithExplicitClass = getLogger(LoggerInCompanionObject::class.java)
+        @Suppress("JAVA_CLASS_ON_COMPANION")
+        private val loggerWithWrongClass = getLogger(javaClass)
+        @Suppress("JAVA_CLASS_ON_COMPANION")
+        private val logger = getLogger(javaClass.enclosingClass)
+    }
+
+    fun log(s: String) {
+        loggerWithExplicitClass.info(s)
+        loggerWithWrongClass.info(s)
+        logger.info(s)
+    }
+
+    class Inner {
+        companion object {
+            private val loggerWithExplicitClass = getLogger(Inner::class.java)
+            @Suppress("JAVA_CLASS_ON_COMPANION")
+            @JvmStatic
+            private val loggerWithWrongClass = getLogger(javaClass)
+            @Suppress("JAVA_CLASS_ON_COMPANION")
+            @JvmStatic
+            private val logger = getLogger(javaClass.enclosingClass)
+        }
+
+        fun log(s: String) {
+            loggerWithExplicitClass.info(s)
+            loggerWithWrongClass.info(s)
+            logger.info(s)
+        }
+    }
+
+}
+
+class CompanionSubclass : LoggerInCompanionObject()
+
+fun main(args: Array<String>) {
+    LoggerInCompanionObject().log("test")
+    LoggerInCompanionObject.Inner().log("test")
+    CompanionSubclass().log("sub")
+}

core-kotlin/src/main/kotlin/com/baeldung/kotlin/logging/Util.kt

@@ -0,0 +1,13 @@
+package com.baeldung.kotlin.logging
+
+import org.slf4j.Logger
+import org.slf4j.LoggerFactory
+import kotlin.reflect.full.companionObject
+
+fun getLogger(forClass: Class<*>): Logger = LoggerFactory.getLogger(forClass)
+
+fun <T : Any> getClassForLogging(javaClass: Class<T>): Class<*> {
+    return javaClass.enclosingClass?.takeIf {
+        it.kotlin.companionObject?.java == javaClass
+    } ?: javaClass
+}

geotools/pom.xml

@@ -1,61 +1,62 @@
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+<project xmlns="http://maven.apache.org/POM/4.0.0"
-    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-    <modelVersion>4.0.0</modelVersion>
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-    <groupId>com.baeldung</groupId>
+	<modelVersion>4.0.0</modelVersion>
-    <artifactId>geotools</artifactId>
+	<artifactId>geotools</artifactId>
-    <version>0.0.1-SNAPSHOT</version>
+	<version>0.0.1-SNAPSHOT</version>
-    <packaging>jar</packaging>
+	<packaging>jar</packaging>
-    <name>geotools</name>
+	<name>geotools</name>
-    <url>http://maven.apache.org</url>
+	<url>http://maven.apache.org</url>
 
-    <parent>
+	<parent>
-        <groupId>com.baeldung</groupId>
+		<groupId>com.baeldung</groupId>
-        <artifactId>parent-modules</artifactId>
+		<artifactId>parent-modules</artifactId>
-        <version>1.0.0-SNAPSHOT</version>
+		<version>1.0.0-SNAPSHOT</version>
-    </parent>
+	</parent>
 
-    <dependencies>
+	<dependencies>
-        <dependency>
+		<dependency>
-            <groupId>org.geotools</groupId>
+			<groupId>org.geotools</groupId>
-            <artifactId>gt-shapefile</artifactId>
+			<artifactId>gt-shapefile</artifactId>
-            <version>${geotools-shapefile.version}</version>
+			<version>${geotools-shapefile.version}</version>
-        </dependency>
+		</dependency>
-        <dependency>
+		<dependency>
-            <groupId>org.geotools</groupId>
+			<groupId>org.geotools</groupId>
-            <artifactId>gt-epsg-hsql</artifactId>
+			<artifactId>gt-epsg-hsql</artifactId>
-            <version>${geotools.version}</version>
+			<version>${geotools.version}</version>
-        </dependency>
+		</dependency>
-        <dependency>
+		<dependency>
-            <groupId>org.geotools</groupId>
+			<groupId>org.geotools</groupId>
-            <artifactId>gt-swing</artifactId>
+			<artifactId>gt-swing</artifactId>
-            <version>${geotools-swing.version}</version>
+			<version>${geotools-swing.version}</version>
-        </dependency>
+		</dependency>
-    </dependencies>
+	</dependencies>
 
-    <repositories>
+	<repositories>
-        <repository>
+		<repository>
-            <id>maven2-repository.dev.java.net</id>
+			<id>maven2-repository.dev.java.net</id>
-            <name>Java.net repository</name>
+			<name>Java.net repository</name>
-            <url>http://download.java.net/maven/2</url>
+			<url>http://download.java.net/maven/2</url>
-        </repository>
+		</repository>
-        <repository>
+		<repository>
-            <id>osgeo</id>
+			<id>osgeo</id>
-            <name>Open Source Geospatial Foundation Repository</name>
+			<name>Open Source Geospatial Foundation Repository</name>
-            <url>http://download.osgeo.org/webdav/geotools/</url>
+			<url>http://download.osgeo.org/webdav/geotools/</url>
-        </repository>
+		</repository>
-        <repository>
+		<repository>
-            <snapshots>
+			<snapshots>
-                <enabled>true</enabled>
+				<enabled>true</enabled>
-            </snapshots>
+			</snapshots>
-            <id>opengeo</id>
+			<id>opengeo</id>
-            <name>OpenGeo Maven Repository</name>
+			<name>OpenGeo Maven Repository</name>
-            <url>http://repo.opengeo.org</url>
+			<url>http://repo.opengeo.org</url>
-        </repository>
+		</repository>
-    </repositories>
+	</repositories>
+
+	<properties>
+		<geotools.version>15.2</geotools.version>
+		<geotools-swing.version>15.2</geotools-swing.version>
+		<geotools-shapefile.version>15.2</geotools-shapefile.version>
+	</properties>
 
-    <properties>
-        <geotools.version>15.2</geotools.version>
-        <geotools-swing.version>15.2</geotools-swing.version>
-        <geotools-shapefile.version>15.2</geotools-shapefile.version>
-    </properties>
 </project>

hibernate5/pom.xml

@@ -5,8 +5,6 @@
     <groupId>com.baeldung</groupId>
     <artifactId>hibernate5</artifactId>
     <version>0.0.1-SNAPSHOT</version>
-    <name>hibernate5</name>
-    <url>http://maven.apache.org</url>
 
     <parent>
         <groupId>com.baeldung</groupId>
@@ -59,9 +57,6 @@
     </build>
 
     <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <!-- Maven plugins -->
-        <maven-compiler-plugin.version>3.7.0</maven-compiler-plugin.version>
         <hibernate.version>5.3.2.Final</hibernate.version>
         <mysql.version>6.0.6</mysql.version>
         <mariaDB4j.version>2.2.3</mariaDB4j.version>

hibernate5/src/main/resources/logback.xml

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

jhipster/jhipster-monolithic/pom.xml

@@ -347,7 +347,7 @@
             </plugins>
         </pluginManagement>
         <plugins>
-            <plugin>
+            <!-- <plugin>
                 <groupId>com.github.ekryd.sortpom</groupId>
                 <artifactId>sortpom-maven-plugin</artifactId>
                 <version>${sortpom-maven-plugin.version}</version>
@@ -367,7 +367,7 @@
                     <keepBlankLines>true</keepBlankLines>
                     <expandEmptyElements>false</expandEmptyElements>
                 </configuration>
-            </plugin>
+            </plugin> -->
             <plugin>
                 <groupId>com.spotify</groupId>
                 <artifactId>docker-maven-plugin</artifactId>

jhipster/jhipster-monolithic/src/main/resources/logback-spring.xml

@@ -3,28 +3,9 @@
 <configuration scan="true">
     <include resource="org/springframework/boot/logging/logback/base.xml"/>
 
-<!-- The FILE and ASYNC appenders are here as examples for a production configuration -->
+    <logger name="com.baeldung" level="INFO"/>
-<!--
-    <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
-        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
-            <fileNamePattern>logFile.%d{yyyy-MM-dd}.log</fileNamePattern>
-            <maxHistory>90</maxHistory>
-        </rollingPolicy>
-        <encoder>
-            <charset>utf-8</charset>
-            <Pattern>%d %-5level [%thread] %logger{0}: %msg%n</Pattern>
-        </encoder>
-    </appender>
 
-    <appender name="ASYNC" class="ch.qos.logback.classic.AsyncAppender">
+    <logger name="io.github.jhipster" level="INFO"/>
-        <queueSize>512</queueSize>
-        <appender-ref ref="FILE"/>
-    </appender>
--->
-
-    <logger name="com.baeldung" level="#logback.loglevel#"/>
-
-    <logger name="io.github.jhipster" level="DEBUG"/>
 
     <logger name="javax.activation" level="WARN"/>
     <logger name="javax.mail" level="WARN"/>

jnosql/jnosql-artemis/pom.xml

@@ -0,0 +1,88 @@
+<?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>
+
+    <parent>
+        <groupId>com.baeldung.jnosql</groupId>
+        <artifactId>jnosql</artifactId>
+        <version>1.0-SNAPSHOT</version>
+    </parent>
+
+    <artifactId>jnosql-artemis</artifactId>
+    <packaging>war</packaging>
+
+    <properties>
+        <liberty-maven-plugin.version>2.4.2</liberty-maven-plugin.version>
+        <failOnMissingWebXml>false</failOnMissingWebXml>
+    </properties>
+
+    <build>
+        <finalName>${artifactId}</finalName>
+        <plugins>
+            <plugin>
+                <groupId>net.wasdev.wlp.maven.plugins</groupId>
+                <artifactId>liberty-maven-plugin</artifactId>
+                <version>${liberty-maven-plugin.version}</version>
+                <configuration>
+                    <assemblyArtifact>
+                        <groupId>io.openliberty</groupId>
+                        <artifactId>openliberty-webProfile8</artifactId>
+                        <version>RELEASE</version>
+                        <type>zip</type>
+                    </assemblyArtifact>
+                    <installAppPackages>project</installAppPackages>
+                    <looseApplication>true</looseApplication>
+                    <configFile>src/main/liberty/config/server.xml</configFile>
+                </configuration>
+                <executions>
+                    <execution>
+                        <id>install-server</id>
+                        <phase>prepare-package</phase>
+                        <goals>
+                            <goal>install-server</goal>
+                            <goal>create-server</goal>
+                            <goal>install-feature</goal>
+                        </goals>
+                    </execution>
+                    <execution>
+                        <id>install-apps</id>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>install-apps</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+
+    <dependencies>
+
+        <dependency>
+            <groupId>javax</groupId>
+            <artifactId>javaee-web-api</artifactId>
+            <version>8.0</version>
+            <scope>provided</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.jnosql.artemis</groupId>
+            <artifactId>artemis-configuration</artifactId>
+            <version>${jnosql.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.jnosql.artemis</groupId>
+            <artifactId>artemis-document</artifactId>
+            <version>${jnosql.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.jnosql.diana</groupId>
+            <artifactId>mongodb-driver</artifactId>
+            <version>${jnosql.version}</version>
+        </dependency>
+
+    </dependencies>
+
+</project>

jnosql/jnosql-artemis/src/main/java/com/baeldung/jnosql/artemis/AppConfig.java

@@ -0,0 +1,10 @@
+package com.baeldung.jnosql.artemis;
+
+import javax.enterprise.context.Initialized;
+import javax.enterprise.event.Observes;
+import javax.ws.rs.ApplicationPath;
+import javax.ws.rs.core.Application;
+
+@ApplicationPath("")
+public class AppConfig extends Application {
+}

jnosql/jnosql-artemis/src/main/java/com/baeldung/jnosql/artemis/EmbeddedMongoDBSetup.java

@@ -0,0 +1,52 @@
+package com.baeldung.jnosql.artemis;
+
+import de.flapdoodle.embed.mongo.MongodExecutable;
+import de.flapdoodle.embed.mongo.MongodProcess;
+import de.flapdoodle.embed.mongo.MongodStarter;
+import de.flapdoodle.embed.mongo.config.MongodConfigBuilder;
+import de.flapdoodle.embed.mongo.config.Net;
+import de.flapdoodle.embed.mongo.distribution.Version;
+import de.flapdoodle.embed.process.runtime.Network;
+
+import javax.enterprise.context.ApplicationScoped;
+import javax.enterprise.context.Destroyed;
+import javax.enterprise.context.Initialized;
+import javax.enterprise.event.Observes;
+import java.io.IOException;
+
+@ApplicationScoped
+public class EmbeddedMongoDBSetup {
+
+    private static final String MONGODB_HOST = "localhost";
+    private static final int MONGODB_PORT = 27019;
+
+    private static final MongodStarter starter = MongodStarter.getDefaultInstance();
+    private static MongodExecutable _mongodExe;
+    private static MongodProcess _mongod;
+
+    public void init(@Observes @Initialized(ApplicationScoped.class) Object init) {
+        try {
+            System.out.println("Starting Embedded MongoDB");
+            initdb();
+            System.out.println("Embedded MongoDB started");
+        } catch (IOException e) {
+            System.out.println("Embedded MongoDB starting error !!");
+            e.printStackTrace();
+        }
+    }
+
+    private void initdb() throws IOException {
+        _mongodExe = starter.prepare(new MongodConfigBuilder()
+                .version(Version.Main.DEVELOPMENT)
+                .net(new Net(MONGODB_HOST, MONGODB_PORT, Network.localhostIsIPv6()))
+                .build());
+        _mongod = _mongodExe.start();
+    }
+
+    public void destroy(@Observes @Destroyed(ApplicationScoped.class) Object init) {
+        System.out.println("Stopping Embedded MongoDB");
+        _mongod.stop();
+        _mongodExe.stop();
+        System.out.println("Embedded MongoDB stopped !");
+    }
+}

jnosql/jnosql-artemis/src/main/java/com/baeldung/jnosql/artemis/EntityManagerProducer.java

@@ -0,0 +1,33 @@
+package com.baeldung.jnosql.artemis;
+
+import org.jnosql.artemis.ConfigurationUnit;
+import org.jnosql.diana.api.document.DocumentCollectionManager;
+import org.jnosql.diana.api.document.DocumentCollectionManagerFactory;
+import org.jnosql.diana.mongodb.document.MongoDBDocumentCollectionManager;
+import org.jnosql.diana.mongodb.document.MongoDBDocumentConfiguration;
+
+import javax.annotation.PostConstruct;
+import javax.enterprise.context.ApplicationScoped;
+import javax.enterprise.inject.Disposes;
+import javax.enterprise.inject.Produces;
+import javax.inject.Inject;
+
+@ApplicationScoped
+public class EntityManagerProducer {
+
+    private static final String DATABASE = "todos";
+
+    @Inject
+    @ConfigurationUnit(name = "document")
+    private DocumentCollectionManagerFactory<MongoDBDocumentCollectionManager> managerFactory;
+
+    @Produces
+    public DocumentCollectionManager getEntityManager() {
+        return managerFactory.get(DATABASE);
+    }
+
+    public void close(@Disposes DocumentCollectionManager entityManager) {
+        entityManager.close();
+    }
+
+}

jnosql/jnosql-artemis/src/main/java/com/baeldung/jnosql/artemis/RepositoryTodoManager.java

@@ -0,0 +1,41 @@
+package com.baeldung.jnosql.artemis;
+
+import com.baeldung.jnosql.artemis.qualifier.Repo;
+import org.jnosql.artemis.Database;
+import org.jnosql.artemis.DatabaseType;
+
+import javax.enterprise.context.ApplicationScoped;
+import javax.inject.Inject;
+import java.util.List;
+import java.util.Optional;
+
+@ApplicationScoped
+@Repo
+public class RepositoryTodoManager implements TodoManager {
+
+    @Inject
+    @Database(DatabaseType.DOCUMENT)
+    private TodoRepository repository;
+
+    @Override
+    public Todo add(Todo todo) {
+        return repository.save(todo);
+    }
+
+    @Override
+    public Todo get(String id) {
+        Optional<Todo> todo = repository.findById(id);
+        return todo.get();
+    }
+
+    @Override
+    public List<Todo> getAll() {
+        return repository.findAll();
+    }
+
+    @Override
+    public void delete(String id) {
+        repository.deleteById(id);
+    }
+
+}

jnosql/jnosql-artemis/src/main/java/com/baeldung/jnosql/artemis/TemplateTodoManager.java

@@ -0,0 +1,43 @@
+package com.baeldung.jnosql.artemis;
+
+import com.baeldung.jnosql.artemis.qualifier.Template;
+import org.jnosql.artemis.document.DocumentTemplate;
+import org.jnosql.diana.api.document.DocumentQuery;
+
+import javax.enterprise.context.ApplicationScoped;
+import javax.inject.Inject;
+import java.util.List;
+import java.util.Optional;
+
+import static org.jnosql.diana.api.document.query.DocumentQueryBuilder.select;
+
+@ApplicationScoped
+@Template
+public class TemplateTodoManager implements TodoManager {
+
+    @Inject
+    private DocumentTemplate documentTemplate;
+
+    @Override
+    public Todo add(Todo todo) {
+        return documentTemplate.insert(todo);
+    }
+
+    @Override
+    public Todo get(String id) {
+        Optional<Todo> todo = documentTemplate.find(Todo.class, id);
+        return todo.get();
+    }
+
+    @Override
+    public List<Todo> getAll() {
+        DocumentQuery query = select().from("Todo").build();
+        return documentTemplate.select(query);
+    }
+
+    @Override
+    public void delete(String id) {
+        documentTemplate.delete(Todo.class, id);
+    }
+
+}

jnosql/jnosql-artemis/src/main/java/com/baeldung/jnosql/artemis/Todo.java

@@ -0,0 +1,51 @@
+package com.baeldung.jnosql.artemis;
+
+import org.jnosql.artemis.Column;
+import org.jnosql.artemis.Entity;
+import org.jnosql.artemis.Id;
+
+import java.io.Serializable;
+
+@Entity
+public class Todo implements Serializable {
+
+    @Id("id")
+    public String id;
+    @Column
+    public String name;
+    @Column
+    public String description;
+
+    public Todo() {
+    }
+
+    public Todo(String id, String name, String description) {
+        this.id = id;
+        this.name = name;
+        this.description = description;
+    }
+
+    public String getId() {
+        return id;
+    }
+
+    public void setId(String id) {
+        this.id = id;
+    }
+
+    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;
+    }
+}

jnosql/jnosql-artemis/src/main/java/com/baeldung/jnosql/artemis/TodoManager.java

@@ -0,0 +1,14 @@
+package com.baeldung.jnosql.artemis;
+
+import java.util.List;
+
+public interface TodoManager {
+
+    Todo add(Todo todo);
+
+    Todo get(String id);
+
+    List<Todo> getAll();
+
+    void delete(String id);
+}

jnosql/jnosql-artemis/src/main/java/com/baeldung/jnosql/artemis/TodoRepository.java

@@ -0,0 +1,10 @@
+package com.baeldung.jnosql.artemis;
+
+import org.jnosql.artemis.Repository;
+
+import java.util.List;
+
+public interface TodoRepository extends Repository<Todo, String> {
+    List<Todo> findByName(String name);
+    List<Todo> findAll();
+}

jnosql/jnosql-artemis/src/main/java/com/baeldung/jnosql/artemis/TodoResource.java

@@ -0,0 +1,48 @@
+package com.baeldung.jnosql.artemis;
+
+import com.baeldung.jnosql.artemis.qualifier.Repo;
+import com.baeldung.jnosql.artemis.qualifier.Template;
+
+import javax.inject.Inject;
+import javax.ws.rs.*;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.Response;
+import javax.ws.rs.core.UriBuilder;
+
+@Path("todos")
+public class TodoResource {
+
+    /*
+    Use eiher @Template or @Repo
+     */
+    @Inject
+    @Template
+    //@Repo
+    private TodoManager todoManager;
+
+    @GET
+    @Path("")
+    @Produces(MediaType.APPLICATION_JSON)
+    public Response all() {
+        return Response.ok(todoManager.getAll()).build();
+    }
+
+    @GET
+    @Path("{id}")
+    @Produces(MediaType.APPLICATION_JSON)
+    public Response get(@PathParam("id") String id) {
+        Todo todo = todoManager.get(id);
+        return Response.ok(todo).build();
+    }
+
+    @POST
+    @Consumes(MediaType.APPLICATION_JSON)
+    public Response add(Todo todo) {
+        Todo savedTodo = todoManager.add(todo);
+        System.out.println(savedTodo.id);
+        return Response.created(
+                UriBuilder.fromResource(this.getClass()).path(String.valueOf(savedTodo.id)).build())
+                .build();
+    }
+
+}

jnosql/jnosql-artemis/src/main/java/com/baeldung/jnosql/artemis/qualifier/Repo.java

@@ -0,0 +1,13 @@
+package com.baeldung.jnosql.artemis.qualifier;
+
+import javax.inject.Qualifier;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Retention(RetentionPolicy.RUNTIME)
+@Target({ElementType.FIELD, ElementType.TYPE})
+@Qualifier
+public @interface Repo {
+}

jnosql/jnosql-artemis/src/main/java/com/baeldung/jnosql/artemis/qualifier/Template.java

@@ -0,0 +1,13 @@
+package com.baeldung.jnosql.artemis.qualifier;
+
+import javax.inject.Qualifier;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Retention(RetentionPolicy.RUNTIME)
+@Target({ElementType.FIELD, ElementType.TYPE})
+@Qualifier
+public @interface Template {
+}

jnosql/jnosql-artemis/src/main/liberty/config/server.xml

@@ -0,0 +1,6 @@
+<server description="OpenLiberty Server">
+    <featureManager>
+        <feature>webProfile-8.0</feature>
+    </featureManager>
+    <httpEndpoint httpPort="9080" httpsPort="9443" id="defaultHttpEndpoint" host="*"/>
+</server>

jnosql/jnosql-artemis/src/main/resources/META-INF/beans.xml

@@ -0,0 +1,6 @@
+<beans xmlns="http://xmlns.jcp.org/xml/ns/javaee"
+       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+       xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
+		http://xmlns.jcp.org/xml/ns/javaee/beans_2_0.xsd"
+       bean-discovery-mode="all">
+</beans>

jnosql/jnosql-artemis/src/main/resources/META-INF/jnosql.json

@@ -0,0 +1,10 @@
+[
+  {
+    "description": "The mongodb document configuration",
+    "name": "document",
+    "provider": "org.jnosql.diana.mongodb.document.MongoDBDocumentConfiguration",
+    "settings": {
+      "mongodb-server-host-1":"localhost:27019"
+    }
+  }
+]

jnosql/jnosql-artemis/src/main/webapp/WEB-INF/jnosql.json

@@ -0,0 +1,10 @@
+[
+  {
+    "description": "The mongodb document configuration",
+    "name": "document",
+    "provider": "org.jnosql.diana.mongodb.document.MongoDBDocumentConfiguration",
+    "settings": {
+      "mongodb-server-host-1":"localhost:27019"
+    }
+  }
+]

jnosql/jnosql-diana/pom.xml

@@ -0,0 +1,93 @@
+<?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>
+
+    <parent>
+        <groupId>com.baeldung.jnosql</groupId>
+        <artifactId>jnosql</artifactId>
+        <version>1.0-SNAPSHOT</version>
+    </parent>
+
+    <artifactId>jnosql-diana</artifactId>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.codehaus.mojo</groupId>
+                <artifactId>exec-maven-plugin</artifactId>
+                <version>1.6.0</version>
+                <executions>
+                    <execution>
+                        <id>document</id>
+                        <goals>
+                            <goal>java</goal>
+                        </goals>
+                        <configuration>
+                            <mainClass>com.baeldung.jnosql.diana.document.DocumentApp</mainClass>
+                        </configuration>
+                    </execution>
+                    <execution>
+                        <id>column</id>
+                        <goals>
+                            <goal>java</goal>
+                        </goals>
+                        <configuration>
+                            <mainClass>com.baeldung.jnosql.diana.column.ColumnFamilyApp</mainClass>
+                        </configuration>
+                    </execution>
+                    <execution>
+                        <id>key</id>
+                        <goals>
+                            <goal>java</goal>
+                        </goals>
+                        <configuration>
+                            <mainClass>com.baeldung.jnosql.diana.key.KeyValueApp</mainClass>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+
+    <dependencies>
+
+        <!--NoSQL Document oriented-->
+        <dependency>
+            <groupId>org.jnosql.diana</groupId>
+            <artifactId>diana-document</artifactId>
+            <version>0.0.5</version>
+        </dependency>
+        <dependency>
+            <groupId>org.jnosql.diana</groupId>
+            <artifactId>mongodb-driver</artifactId>
+            <version>0.0.5</version>
+        </dependency>
+
+        <!--NoSQL Column oriented-->
+        <dependency>
+            <groupId>org.jnosql.diana</groupId>
+            <artifactId>diana-column</artifactId>
+            <version>0.0.5</version>
+        </dependency>
+        <dependency>
+            <groupId>org.jnosql.diana</groupId>
+            <artifactId>cassandra-driver</artifactId>
+            <version>0.0.5</version>
+        </dependency>
+
+        <!--NoSQL Key Value oriented-->
+        <dependency>
+            <groupId>org.jnosql.diana</groupId>
+            <artifactId>diana-key-value</artifactId>
+            <version>0.0.5</version>
+        </dependency>
+        <dependency>
+            <groupId>org.jnosql.diana</groupId>
+            <artifactId>hazelcast-driver</artifactId>
+            <version>0.0.5</version>
+        </dependency>
+    </dependencies>
+
+</project>

jnosql/jnosql-diana/src/main/java/com/baeldung/jnosql/diana/column/ColumnFamilyApp.java

@@ -0,0 +1,32 @@
+package com.baeldung.jnosql.diana.column;
+
+import org.cassandraunit.utils.EmbeddedCassandraServerHelper;
+import org.jnosql.diana.api.column.*;
+import org.jnosql.diana.cassandra.column.CassandraConfiguration;
+
+public class ColumnFamilyApp {
+
+    private static final String KEY_SPACE = "myKeySpace";
+    private static final String COLUMN_FAMILY = "books";
+
+    public static void main(String... args) throws Exception {
+
+        EmbeddedCassandraServerHelper.startEmbeddedCassandra();
+
+        ColumnConfiguration configuration = new CassandraConfiguration();
+        try(ColumnFamilyManagerFactory entityManagerFactory = configuration.get()) {
+            ColumnFamilyManager entityManager = entityManagerFactory.get(KEY_SPACE);
+            ColumnEntity columnEntity = ColumnEntity.of(COLUMN_FAMILY);
+            Column key = Columns.of("id", 10L);
+            Column name = Columns.of("name", "JNoSQL in Acion");
+            columnEntity.add(key);
+            columnEntity.add(name);
+            ColumnEntity saved = entityManager.insert(columnEntity);
+            System.out.println(saved);
+        }
+
+        EmbeddedCassandraServerHelper.cleanEmbeddedCassandra();
+        EmbeddedCassandraServerHelper.stopEmbeddedCassandra();
+    }
+
+}

jnosql/jnosql-diana/src/main/java/com/baeldung/jnosql/diana/document/DocumentApp.java

@@ -0,0 +1,67 @@
+package com.baeldung.jnosql.diana.document;
+
+import org.jnosql.diana.api.Settings;
+import org.jnosql.diana.api.document.*;
+import org.jnosql.diana.mongodb.document.MongoDBDocumentConfiguration;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import static org.jnosql.diana.api.document.query.DocumentQueryBuilder.delete;
+import static org.jnosql.diana.api.document.query.DocumentQueryBuilder.select;
+
+public class DocumentApp {
+
+    private static final String DB_NAME = "my-db";
+    private static final String DOCUMENT_COLLECTION = "books";
+
+    public static final String KEY_NAME = "_id";
+
+    DocumentConfiguration configuration = new MongoDBDocumentConfiguration();
+
+    public static void main(String... args) throws Exception {
+        MongoDbInit.startMongoDb();
+
+        DocumentApp app = new DocumentApp();
+        app.process();
+
+        MongoDbInit.stopMongoDb();
+    }
+
+    public void process() {
+
+        Map<String, Object> map = new HashMap<>();
+        map.put("mongodb-server-host-1", "localhost:27017");
+
+        try (DocumentCollectionManagerFactory managerFactory = configuration.get(Settings.of(map));
+             DocumentCollectionManager manager = managerFactory.get(DB_NAME);) {
+
+            DocumentEntity documentEntity = DocumentEntity.of(DOCUMENT_COLLECTION);
+            documentEntity.add(Document.of(KEY_NAME, "100"));
+            documentEntity.add(Document.of("name", "JNoSQL in Action"));
+            documentEntity.add(Document.of("pages", 620));
+
+            //CREATE
+            DocumentEntity saved = manager.insert(documentEntity);
+
+            //READ
+            DocumentQuery query = select().from(DOCUMENT_COLLECTION).where(KEY_NAME).eq("100").build();
+            List<DocumentEntity> entities = manager.select(query);
+            System.out.println(entities.get(0));
+
+            //UPDATE
+            saved.add(Document.of("author", "baeldung"));
+            DocumentEntity updated = manager.update(saved);
+            System.out.println(updated);
+
+            //DELETE
+            DocumentDeleteQuery deleteQuery = delete().from(DOCUMENT_COLLECTION).where(KEY_NAME).eq("100").build();
+            manager.delete(deleteQuery);
+
+            List<DocumentEntity> documentEntityList = manager.select(select().from(DOCUMENT_COLLECTION).build());
+            System.out.println(documentEntityList);
+        }
+    }
+
+}

jnosql/jnosql-diana/src/main/java/com/baeldung/jnosql/diana/document/MongoDbInit.java

@@ -0,0 +1,32 @@
+package com.baeldung.jnosql.diana.document;
+
+import de.flapdoodle.embed.mongo.MongodExecutable;
+import de.flapdoodle.embed.mongo.MongodProcess;
+import de.flapdoodle.embed.mongo.MongodStarter;
+import de.flapdoodle.embed.mongo.config.MongodConfigBuilder;
+import de.flapdoodle.embed.mongo.config.Net;
+import de.flapdoodle.embed.mongo.distribution.Version;
+import de.flapdoodle.embed.process.runtime.Network;
+
+import java.io.IOException;
+
+public abstract class MongoDbInit {
+
+    private static final MongodStarter starter = MongodStarter.getDefaultInstance();
+    private static MongodExecutable _mongodExe;
+    private static MongodProcess _mongod;
+
+    public static void startMongoDb() throws IOException {
+        _mongodExe = starter.prepare(new MongodConfigBuilder()
+                .version(Version.Main.DEVELOPMENT)
+                .net(new Net("localhost", 27017, Network.localhostIsIPv6()))
+                .build());
+        _mongod = _mongodExe.start();
+    }
+
+    public static void stopMongoDb(){
+        _mongod.stop();
+        _mongodExe.stop();
+    }
+
+}

jnosql/jnosql-diana/src/main/java/com/baeldung/jnosql/diana/key/Book.java

@@ -0,0 +1,63 @@
+package com.baeldung.jnosql.diana.key;
+
+import java.io.Serializable;
+
+public class Book implements Serializable {
+
+    private String isbn;
+    private String name;
+    private String author;
+    private int pages;
+
+    public Book() {
+    }
+
+    public Book(String isbn, String name, String author, int pages) {
+        this.isbn = isbn;
+        this.name = name;
+        this.author = author;
+        this.pages = pages;
+    }
+
+    public String getIsbn() {
+        return isbn;
+    }
+
+    public void setIsbn(String isbn) {
+        this.isbn = isbn;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getAuthor() {
+        return author;
+    }
+
+    public void setAuthor(String author) {
+        this.author = author;
+    }
+
+    public int getPages() {
+        return pages;
+    }
+
+    public void setPages(int pages) {
+        this.pages = pages;
+    }
+
+    @Override
+    public String toString() {
+        return "Book{" +
+                "isbn='" + isbn + '\'' +
+                ", name='" + name + '\'' +
+                ", author='" + author + '\'' +
+                ", pages=" + pages +
+                '}';
+    }
+}

jnosql/jnosql-diana/src/main/java/com/baeldung/jnosql/diana/key/KeyValueApp.java

@@ -0,0 +1,33 @@
+package com.baeldung.jnosql.diana.key;
+
+import com.hazelcast.core.Hazelcast;
+import org.jnosql.diana.api.Value;
+import org.jnosql.diana.api.key.BucketManager;
+import org.jnosql.diana.api.key.BucketManagerFactory;
+import org.jnosql.diana.api.key.KeyValueConfiguration;
+import org.jnosql.diana.api.key.KeyValueEntity;
+import org.jnosql.diana.hazelcast.key.HazelcastKeyValueConfiguration;
+
+import java.util.Optional;
+
+public class KeyValueApp {
+
+    private static final String BUCKET_NAME = "books";
+
+    public static void main(String... args) throws Exception {
+        KeyValueConfiguration configuration = new HazelcastKeyValueConfiguration();
+        try (BucketManagerFactory managerFactory = configuration.get()) {
+            BucketManager manager = managerFactory.getBucketManager(BUCKET_NAME);
+
+            Book book = new Book("12345", "JNoSQL in Action", "baeldung", 420);
+            KeyValueEntity keyValueEntity = KeyValueEntity.of(book.getIsbn(), book);
+            manager.put(keyValueEntity);
+
+            Optional<Value> optionalValue = manager.get("12345");
+            Value value = optionalValue.get();
+            Book savedBook = value.get(Book.class);
+            System.out.println(savedBook);
+        }
+        Hazelcast.shutdownAll();
+    }
+}

jnosql/jnosql-diana/src/main/resources/diana-cassandra.properties

@@ -0,0 +1,5 @@
+cassandra-host-1=localhost
+cassandra-port=9142
+#cassandra-threads-number=2
+cassandra-query-1=CREATE KEYSPACE IF NOT EXISTS myKeySpace WITH replication = {'class': 'SimpleStrategy', 'replication_factor' : 3};
+cassandra-query-2=CREATE COLUMNFAMILY IF NOT EXISTS myKeySpace.books (id bigint PRIMARY KEY, name text);

jnosql/jnosql-diana/src/main/resources/diana-hazelcast.properties

@@ -0,0 +1 @@
+hazelcast-instanceName=hazelcast

jnosql/jnosql-diana/src/main/resources/diana-mongodb.properties

@@ -0,0 +1,2 @@
+#Define Host and Port
+mongodb-server-host-1=localhost:27017

jnosql/pom.xml

@@ -0,0 +1,23 @@
+<?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.jnosql</groupId>
+    <artifactId>jnosql</artifactId>
+    <version>1.0-SNAPSHOT</version>
+    <packaging>pom</packaging>
+
+    <properties>
+        <maven.compiler.source>1.8</maven.compiler.source>
+        <maven.compiler.target>1.8</maven.compiler.target>
+        <jnosql.version>0.0.5</jnosql.version>
+    </properties>
+
+    <modules>
+        <module>jnosql-diana</module>
+        <module>jnosql-artemis</module>
+   </modules>
+
+</project>

junit5/README.md

@@ -1,2 +0,0 @@
-## Relevant articles: 
-- [The Order of Tests in JUnit](http://www.baeldung.com/junit-5-test-order)

libraries-data/pom.xml

@@ -141,6 +141,13 @@
             <artifactId>hazelcast</artifactId>
             <version>${hazelcast.version}</version>
         </dependency>
+        
+        <dependency>
+            <groupId>com.googlecode.jmapper-framework</groupId>
+            <artifactId>jmapper-core</artifactId>
+            <version>${jmapper.version}</version>
+        </dependency>
+                
     </dependencies>
 
     <build>
@@ -275,6 +282,7 @@
         <datanucleus-maven-plugin.version>5.0.2</datanucleus-maven-plugin.version>
         <datanucleus-xml.version>5.0.0-release</datanucleus-xml.version>
         <datanucleus-jdo-query.version>5.0.4</datanucleus-jdo-query.version>
+        <jmapper.version>1.6.0.1</jmapper.version>        
     </properties>
 
 </project>

libraries-data/src/main/java/com/baeldung/jmapper/User.java

@@ -0,0 +1,56 @@
+package com.baeldung.jmapper;
+
+import java.time.LocalDate;
+
+
+public class User {
+    
+    private long id;    
+    private String email;
+    private LocalDate birthDate;
+    
+    // constructors
+    
+    public User() {
+        super();
+    }
+    
+    public User(long id, String email, LocalDate birthDate) {
+        super();
+        this.id = id;
+        this.email = email;
+        this.birthDate = birthDate;
+    }
+
+    // getters and setters
+    
+    public long getId() {
+        return id;
+    }
+
+    public void setId(long id) {
+        this.id = id;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public void setEmail(String email) {
+        this.email = email;
+    }
+
+    public LocalDate getBirthDate() {
+        return birthDate;
+    }
+
+    public void setBirthDate(LocalDate birthDate) {
+        this.birthDate = birthDate;
+    }
+
+    @Override
+    public String toString() {
+        return "User [id=" + id + ", email=" + email + ", birthDate=" + birthDate + "]";
+    }
+    
+}

libraries-data/src/main/java/com/baeldung/jmapper/UserDto.java

@@ -0,0 +1,69 @@
+package com.baeldung.jmapper;
+
+import java.time.LocalDate;
+import java.time.Period;
+
+import com.googlecode.jmapper.annotations.JMap;
+import com.googlecode.jmapper.annotations.JMapConversion;
+
+public class UserDto {
+    
+    @JMap
+    private long id;
+
+    @JMap("email")
+    private String username;
+    
+    @JMap("birthDate")
+    private int age;
+
+    @JMapConversion(from={"birthDate"}, to={"age"})
+    public int conversion(LocalDate birthDate){
+        return Period.between(birthDate, LocalDate.now()).getYears();
+    }
+    
+    // constructors
+    
+    public UserDto() {
+        super();
+    }
+
+    public UserDto(long id, String username, int age) {
+        super();
+        this.id = id;
+        this.username = username;
+        this.age = age;
+    }
+
+   // getters and setters
+    
+    public long getId() {
+        return id;
+    }
+
+    public void setId(long id) {
+        this.id = id;
+    }
+
+    public String getUsername() {
+        return username;
+    }
+
+    public void setUsername(String username) {
+        this.username = username;
+    }
+
+    public int getAge() {
+        return age;
+    }
+
+    public void setAge(int age) {
+        this.age = age;
+    }
+
+    @Override
+    public String toString() {
+        return "UserDto [id=" + id + ", username=" + username + ", age=" + age + "]";
+    }
+    
+}

libraries-data/src/main/java/com/baeldung/jmapper/UserDto1.java

@@ -0,0 +1,47 @@
+package com.baeldung.jmapper;
+
+import com.googlecode.jmapper.annotations.JGlobalMap;
+
+@JGlobalMap
+public class UserDto1 {
+    
+    private long id;
+    private String email;
+    
+    
+    // constructors
+    
+    public UserDto1() {
+        super();
+    }
+
+    public UserDto1(long id, String email) {
+        super();
+        this.id = id;
+        this.email = email;
+    }
+
+   // getters and setters
+    
+    public long getId() {
+        return id;
+    }
+
+    public void setId(long id) {
+        this.id = id;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public void setEmail(String email) {
+        this.email = email;
+    }
+
+    @Override
+    public String toString() {
+        return "UserDto [id=" + id + ", email=" + email + "]";
+    }
+    
+}

libraries-data/src/main/java/com/baeldung/jmapper/relational/User.java

@@ -0,0 +1,49 @@
+package com.baeldung.jmapper.relational;
+
+import com.googlecode.jmapper.annotations.JMap;
+
+
+public class User {
+    
+    @JMap(classes = {UserDto1.class, UserDto2.class})
+    private long id;    
+    
+    @JMap(attributes = {"username", "email"}, classes = {UserDto1.class, UserDto2.class})
+    private String email;
+    
+    // constructors
+    
+    public User() {
+        super();
+    }
+    
+    public User(long id, String email) {
+        super();
+        this.id = id;
+        this.email = email;
+    }
+
+    // getters and setters
+    
+    public long getId() {
+        return id;
+    }
+
+    public void setId(long id) {
+        this.id = id;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public void setEmail(String email) {
+        this.email = email;
+    }
+
+    @Override
+    public String toString() {
+        return "User [id=" + id + ", email=" + email + "]";
+    }
+    
+}

libraries-data/src/main/java/com/baeldung/jmapper/relational/UserDto1.java

@@ -0,0 +1,44 @@
+package com.baeldung.jmapper.relational;
+
+
+public class UserDto1 {
+    
+    private long id;
+    private String username;
+    
+    // constructors
+    
+    public UserDto1() {
+        super();
+    }
+
+    public UserDto1(long id, String username) {
+        super();
+        this.id = id;
+        this.username = username;
+    }
+
+   // getters and setters
+    
+    public long getId() {
+        return id;
+    }
+
+    public void setId(long id) {
+        this.id = id;
+    }
+
+    public String getUsername() {
+        return username;
+    }
+
+    public void setUsername(String username) {
+        this.username = username;
+    }
+
+    @Override
+    public String toString() {
+        return "UserDto [id=" + id + ", username=" + username + "]";
+    }
+    
+}

libraries-data/src/main/java/com/baeldung/jmapper/relational/UserDto2.java

@@ -0,0 +1,44 @@
+package com.baeldung.jmapper.relational;
+
+
+public class UserDto2 {
+    
+    private long id;
+    private String email;
+    
+    // constructors
+    
+    public UserDto2() {
+        super();
+    }
+
+    public UserDto2(long id, String email) {
+        super();
+        this.id = id;
+        this.email = email;
+    }
+
+   // getters and setters
+    
+    public long getId() {
+        return id;
+    }
+
+    public void setId(long id) {
+        this.id = id;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public void setEmail(String email) {
+        this.email = email;
+    }
+
+    @Override
+    public String toString() {
+        return "UserDto2 [id=" + id + ", email=" + email + "]";
+    }
+    
+}

libraries-data/src/main/resources/user_jmapper.xml

@@ -0,0 +1,10 @@
+<jmapper>
+  <class name="com.baeldung.jmapper.UserDto">
+    <attribute name="id">
+      <value name="id"/>
+    </attribute>
+    <attribute name="username">
+      <value name="email"/>
+    </attribute>
+  </class>
+</jmapper>

libraries-data/src/main/resources/user_jmapper1.xml

@@ -0,0 +1,5 @@
+<jmapper>
+  <class name="com.baeldung.jmapper.UserDto1">
+    <global/>
+  </class>
+</jmapper>

libraries-data/src/main/resources/user_jmapper2.xml

@@ -0,0 +1,21 @@
+<jmapper>
+  <class name="com.baeldung.jmapper.relational.User">
+    <attribute name="id">
+      <value name="id"/>
+      <classes>
+        <class name="com.baeldung.jmapper.relational.UserDto1"/>
+        <class name="com.baeldung.jmapper.relational.UserDto2"/>
+      </classes>
+    </attribute>
+    <attribute name="email">
+      <attributes>
+        <attribute name="username"/>
+        <attribute name="email"/>
+      </attributes>
+      <classes>
+        <class name="com.baeldung.jmapper.relational.UserDto1"/>
+        <class name="com.baeldung.jmapper.relational.UserDto2"/>
+      </classes>      
+    </attribute>
+  </class>
+</jmapper>

libraries-data/src/test/java/com/baeldung/jmapper/JMapperIntegrationTest.java

@@ -0,0 +1,114 @@
+package com.baeldung.jmapper;
+
+import static com.googlecode.jmapper.api.JMapperAPI.attribute;
+import static com.googlecode.jmapper.api.JMapperAPI.global;
+import static com.googlecode.jmapper.api.JMapperAPI.mappedClass;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+import java.time.LocalDate;
+
+import org.junit.Test;
+
+import com.googlecode.jmapper.JMapper;
+import com.googlecode.jmapper.api.JMapperAPI;
+
+public class JMapperIntegrationTest {
+
+    
+    @Test
+    public void givenUser_whenUseAnnotation_thenConverted(){
+        JMapper<UserDto, User> userMapper = new JMapper<>(UserDto.class, User.class);
+        
+        User user = new User(1L,"john@test.com", LocalDate.of(1980,8,20));
+        UserDto result = userMapper.getDestination(user);
+
+        System.out.println(result);
+        assertEquals(user.getId(), result.getId());
+        assertEquals(user.getEmail(), result.getUsername());        
+    }
+    
+    @Test
+    public void givenUser_whenUseGlobalMapAnnotation_thenConverted(){
+        JMapper<UserDto1, User> userMapper= new JMapper<>(UserDto1.class, User.class);
+        
+        User user = new User(1L,"john@test.com", LocalDate.of(1980,8,20));
+        UserDto1 result = userMapper.getDestination(user);
+
+        System.out.println(result);
+        assertEquals(user.getId(), result.getId());
+        assertEquals(user.getEmail(), result.getEmail());        
+    }  
+    
+    @Test
+    public void givenUser_whenUseAnnotationExplicitConversion_thenConverted(){
+        JMapper<UserDto, User> userMapper = new JMapper<>(UserDto.class, User.class);
+        
+        User user = new User(1L,"john@test.com", LocalDate.of(1980,8,20));
+        UserDto result = userMapper.getDestination(user);
+
+        System.out.println(result);
+        assertEquals(user.getId(), result.getId());
+        assertEquals(user.getEmail(), result.getUsername());     
+        assertTrue(result.getAge() > 0);
+    }      
+
+    //======================= XML
+    
+    @Test
+    public void givenUser_whenUseXml_thenConverted(){
+        JMapper<UserDto, User> userMapper = new JMapper<>(UserDto.class, User.class,"user_jmapper.xml");
+        
+        User user = new User(1L,"john@test.com", LocalDate.of(1980,8,20));
+        UserDto result = userMapper.getDestination(user);
+
+        System.out.println(result);
+        assertEquals(user.getId(), result.getId());
+        assertEquals(user.getEmail(), result.getUsername());            
+    }
+    
+    @Test
+    public void givenUser_whenUseXmlGlobal_thenConverted(){
+        JMapper<UserDto1, User> userMapper = new JMapper<>(UserDto1.class, User.class,"user_jmapper1.xml");
+        
+        User user = new User(1L,"john@test.com", LocalDate.of(1980,8,20));
+        UserDto1 result = userMapper.getDestination(user);
+
+        System.out.println(result);
+        assertEquals(user.getId(), result.getId());
+        assertEquals(user.getEmail(), result.getEmail());            
+    }    
+    
+    // ===== API
+    
+    @Test
+    public void givenUser_whenUseApi_thenConverted(){
+        JMapperAPI jmapperApi = new JMapperAPI() .add(mappedClass(UserDto.class)
+                 .add(attribute("id").value("id"))
+                 .add(attribute("username").value("email"))
+            ) ;
+        JMapper<UserDto, User> userMapper = new JMapper<>(UserDto.class, User.class, jmapperApi);
+        
+        User user = new User(1L,"john@test.com", LocalDate.of(1980,8,20));
+        UserDto result = userMapper.getDestination(user);
+
+        System.out.println(result);
+        assertEquals(user.getId(), result.getId());
+        assertEquals(user.getEmail(), result.getUsername());
+    }
+    
+    @Test
+    public void givenUser_whenUseApiGlobal_thenConverted(){
+        JMapperAPI jmapperApi = new JMapperAPI() .add(mappedClass(UserDto.class)
+                .add(global())
+            ) ;
+        JMapper<UserDto1, User> userMapper1 = new JMapper<>(UserDto1.class, User.class,jmapperApi);
+        
+        User user = new User(1L,"john@test.com", LocalDate.of(1980,8,20));
+        UserDto1 result = userMapper1.getDestination(user);
+
+        System.out.println(result);
+        assertEquals(user.getId(), result.getId());
+        assertEquals(user.getEmail(), result.getEmail());
+    }
+}

libraries-data/src/test/java/com/baeldung/jmapper/JMapperRelationalIntegrationTest.java

@@ -0,0 +1,76 @@
+package com.baeldung.jmapper;
+
+import static com.googlecode.jmapper.api.JMapperAPI.attribute;
+import static com.googlecode.jmapper.api.JMapperAPI.mappedClass;
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Test;
+
+import com.baeldung.jmapper.relational.User;
+import com.baeldung.jmapper.relational.UserDto1;
+import com.baeldung.jmapper.relational.UserDto2;
+import com.googlecode.jmapper.RelationalJMapper;
+import com.googlecode.jmapper.api.JMapperAPI;
+
+public class JMapperRelationalIntegrationTest {
+
+    
+    @Test
+    public void givenUser_whenUseAnnotation_thenConverted(){
+        RelationalJMapper<User> relationalMapper = new RelationalJMapper<>(User.class);
+        
+        User user = new User(1L,"john@test.com");
+        UserDto1 result1 = relationalMapper.oneToMany(UserDto1.class, user);
+        UserDto2 result2= relationalMapper.oneToMany(UserDto2.class, user);
+
+        System.out.println(result1);
+        System.out.println(result2);
+        assertEquals(user.getId(), result1.getId());
+        assertEquals(user.getEmail(), result1.getUsername());  
+        assertEquals(user.getId(), result2.getId());
+        assertEquals(user.getEmail(), result2.getEmail());          
+    }     
+
+    //======================= XML
+    
+    @Test
+    public void givenUser_whenUseXml_thenConverted(){
+        RelationalJMapper<User> relationalMapper = new RelationalJMapper<>(User.class,"user_jmapper2.xml");
+        
+        User user = new User(1L,"john@test.com");
+        UserDto1 result1 = relationalMapper.oneToMany(UserDto1.class, user);
+        UserDto2 result2 = relationalMapper.oneToMany(UserDto2.class, user);
+
+        System.out.println(result1);
+        System.out.println(result2);
+        assertEquals(user.getId(), result1.getId());
+        assertEquals(user.getEmail(), result1.getUsername());
+        assertEquals(user.getId(), result2.getId());
+        assertEquals(user.getEmail(), result2.getEmail());         
+    }
+    
+    
+    // ===== API
+    
+    @Test
+    public void givenUser_whenUseApi_thenConverted(){
+        JMapperAPI jmapperApi = new JMapperAPI() 
+        .add(mappedClass(User.class)
+            .add(attribute("id").value("id").targetClasses(UserDto1.class,UserDto2.class))
+            .add(attribute("email").targetAttributes("username","email").targetClasses(UserDto1.class,UserDto2.class)) )
+         ;
+        RelationalJMapper<User> relationalMapper = new RelationalJMapper<>(User.class,jmapperApi);
+        
+        User user = new User(1L,"john@test.com");
+        UserDto1 result1 = relationalMapper.oneToMany(UserDto1.class, user);
+        UserDto2 result2 = relationalMapper.oneToMany(UserDto2.class, user);
+
+        System.out.println(result1);
+        System.out.println(result2);
+        assertEquals(user.getId(), result1.getId());
+        assertEquals(user.getEmail(), result1.getUsername());
+        assertEquals(user.getId(), result2.getId());
+        assertEquals(user.getEmail(), result2.getEmail());            
+    }
+
+}

libraries/src/test/java/com/baeldung/hoverfly/HoverflyApiLiveTest.java

@@ -31,7 +31,7 @@ import org.springframework.web.client.RestTemplate;
 import io.specto.hoverfly.junit.core.SimulationSource;
 import io.specto.hoverfly.junit.rule.HoverflyRule;
 
-public class HoverflyApiIntegrationTest {
+public class HoverflyApiLiveTest {
 
     private static final SimulationSource source = dsl(service("http://www.baeldung.com").get("/api/courses/1").willReturn(success().body(jsonWithSingleQuotes("{'id':'1','name':'HCI'}")))
 

libraries/src/test/java/com/baeldung/infinispan/service/HelloWorldServiceTemporaryLiveTest.java

@@ -5,7 +5,7 @@ import org.junit.Test;
 
 import static org.assertj.core.api.Java6Assertions.assertThat;
 
-public class HelloWorldServiceIntegrationTest extends AbstractIntegrationTest {
+public class HelloWorldServiceTemporaryLiveTest extends AbstractIntegrationTest {
 
     @Test
     public void whenGetIsCalledTwoTimes_thenTheSecondShouldHitTheCache() {

maven/pom.xml

@@ -48,8 +48,10 @@
                         <exclude>DataTest.java</exclude>
                     </excludes>
                     <includes>
+                        <include>TestFail.java</include>
                         <include>DataCheck.java</include>
                     </includes>
+                    <testFailureIgnore>true</testFailureIgnore>
                 </configuration>
             </plugin>
             <plugin>

maven/src/test/java/testfail/TestFail.java

@@ -0,0 +1,15 @@
+package testfail;
+
+import org.junit.Test;
+
+import static org.junit.Assert.assertNotNull;
+
+public class TestFail {
+    @Test
+    public void whenMessageAssigned_thenItIsNotNull() {
+        String message = "hello there";
+        message = null;
+        assertNotNull(message);
+    }
+    
+}

micronaut/.mvn/wrapper/MavenWrapperDownloader.java

@@ -106,5 +106,4 @@ public class MavenWrapperDownloader {
         fos.close();
         rbc.close();
     }
-
 }