Merge remote-tracking branch 'upstream/master'

JGit/pom.xml

@@ -3,10 +3,11 @@
     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>JGitSnippets</artifactId>
+    <artifactId>JGit</artifactId>
     <version>1.0-SNAPSHOT</version>
     <packaging>jar</packaging>
     <url>http://maven.apache.org</url>
+	<name>JGit</name>
 
     <parent>
         <groupId>com.baeldung</groupId>

algorithms/src/main/java/com/baeldung/algorithms/distancebetweenpoints/DistanceBetweenPointsService.java

@@ -0,0 +1,38 @@
+package com.baeldung.algorithms.distancebetweenpoints;
+
+import java.awt.geom.Point2D;
+
+public class DistanceBetweenPointsService {
+
+    public double calculateDistanceBetweenPoints(
+        double x1, 
+        double y1, 
+        double x2, 
+        double y2) {
+        
+        return Math.sqrt((y2 - y1) * (y2 - y1) + (x2 - x1) * (x2 - x1));
+    }
+
+    public double calculateDistanceBetweenPointsWithHypot(
+        double x1, 
+        double y1, 
+        double x2, 
+        double y2) {
+        
+        double ac = Math.abs(y2 - y1);
+        double cb = Math.abs(x2 - x1);
+        
+        return Math.hypot(ac, cb);
+    }
+
+    public double calculateDistanceBetweenPointsWithPoint2D( 
+        double x1, 
+        double y1, 
+        double x2, 
+        double y2) {
+        
+        return Point2D.distance(x1, y1, x2, y2);
+
+    }
+
+}

algorithms/src/test/java/com/baeldung/algorithms/distancebetweenpoints/DistanceBetweenPointsServiceUnitTest.java

@@ -0,0 +1,54 @@
+package com.baeldung.algorithms.distancebetweenpoints;
+
+import org.junit.Test;
+
+import com.baeldung.algorithms.distancebetweenpoints.DistanceBetweenPointsService;
+
+import static org.junit.Assert.assertEquals;
+
+public class DistanceBetweenPointsServiceUnitTest {
+
+    private DistanceBetweenPointsService service = new DistanceBetweenPointsService();
+
+    @Test
+    public void givenTwoPoints_whenCalculateDistanceByFormula_thenCorrect() {
+
+        double x1 = 3;
+        double y1 = 4;
+        double x2 = 7;
+        double y2 = 1;
+
+        double distance = service.calculateDistanceBetweenPoints(x1, y1, x2, y2);
+
+        assertEquals(distance, 5, 0.001);
+
+    }
+
+    @Test
+    public void givenTwoPoints_whenCalculateDistanceWithHypot_thenCorrect() {
+
+        double x1 = 3;
+        double y1 = 4;
+        double x2 = 7;
+        double y2 = 1;
+
+        double distance = service.calculateDistanceBetweenPointsWithHypot(x1, y1, x2, y2);
+
+        assertEquals(distance, 5, 0.001);
+
+    }
+
+    @Test
+    public void givenTwoPoints_whenCalculateDistanceWithPoint2D_thenCorrect() {
+
+        double x1 = 3;
+        double y1 = 4;
+        double x2 = 7;
+        double y2 = 1;
+
+        double distance = service.calculateDistanceBetweenPointsWithPoint2D(x1, y1, x2, y2);
+
+        assertEquals(distance, 5, 0.001);
+
+    }
+}

apache-avro/pom.xml

@@ -4,8 +4,9 @@
          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>
+    <artifactId>apache-avro</artifactId>
     <version>0.0.1-SNAPSHOT</version>
+	<name>Apache Avro</version>
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

core-java/src/main/java/com/baeldung/synthetic/BridgeMethodDemo.java

@@ -0,0 +1,23 @@
+package com.baeldung.synthetic;
+
+import java.util.Comparator;
+
+/**
+ * Class which contains a synthetic bridge method.
+ * 
+ * @author Donato Rimenti
+ *
+ */
+public class BridgeMethodDemo implements Comparator<Integer> {
+
+    /*
+     * (non-Javadoc)
+     * 
+     * @see java.util.Comparator#compare(java.lang.Object, java.lang.Object)
+     */
+    @Override
+    public int compare(Integer o1, Integer o2) {
+        return 0;
+    }
+
+}

core-java/src/main/java/com/baeldung/synthetic/SyntheticConstructorDemo.java

@@ -0,0 +1,34 @@
+package com.baeldung.synthetic;
+
+/**
+ * Wrapper for a class which contains a synthetic constructor.
+ * 
+ * @author Donato Rimenti
+ *
+ */
+public class SyntheticConstructorDemo {
+
+    /**
+     * We need to instantiate the {@link NestedClass} using a private
+     * constructor from the enclosing instance in order to generate a synthetic
+     * constructor.
+     */
+    private NestedClass nestedClass = new NestedClass();
+
+    /**
+     * Class which contains a synthetic constructor.
+     * 
+     * @author Donato Rimenti
+     *
+     */
+    class NestedClass {
+
+        /**
+         * In order to generate a synthetic constructor, this class must have a
+         * private constructor.
+         */
+        private NestedClass() {
+        }
+    }
+
+}

core-java/src/main/java/com/baeldung/synthetic/SyntheticFieldDemo.java

@@ -0,0 +1,22 @@
+package com.baeldung.synthetic;
+
+/**
+ * Wrapper for a class which contains a synthetic field reference to the outer
+ * class.
+ * 
+ * @author Donato Rimenti
+ *
+ */
+public class SyntheticFieldDemo {
+
+    /**
+     * Class which contains a synthetic field reference to the outer class.
+     * 
+     * @author Donato Rimenti
+     *
+     */
+    class NestedClass {
+
+    }
+
+}

core-java/src/main/java/com/baeldung/synthetic/SyntheticMethodDemo.java

@@ -0,0 +1,48 @@
+package com.baeldung.synthetic;
+
+/**
+ * Wrapper for a class which contains two synthetic methods accessors to a
+ * private field.
+ * 
+ * @author Donato Rimenti
+ *
+ */
+public class SyntheticMethodDemo {
+
+    /**
+     * Class which contains two synthetic methods accessors to a private field.
+     * 
+     * @author Donato Rimenti
+     *
+     */
+    class NestedClass {
+
+        /**
+         * Field for which will be generated synthetic methods accessors. It's
+         * important that this field is private for this purpose.
+         */
+        private String nestedField;
+    }
+
+    /**
+     * Gets the private nested field. We need to read the nested field in order
+     * to generate the synthetic getter.
+     * 
+     * @return the {@link NestedClass#nestedField}
+     */
+    public String getNestedField() {
+        return new NestedClass().nestedField;
+    }
+
+    /**
+     * Sets the private nested field. We need to write the nested field in order
+     * to generate the synthetic setter.
+     * 
+     * @param nestedField
+     *            the {@link NestedClass#nestedField}
+     */
+    public void setNestedField(String nestedField) {
+        new NestedClass().nestedField = nestedField;
+    }
+
+}

core-java/src/test/java/com/baeldung/synthetic/SyntheticUnitTest.java

@@ -0,0 +1,99 @@
+package com.baeldung.synthetic;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ * Unit test for {@link SyntheticFieldDemo}, {@link SyntheticMethodDemo},
+ * {@link SyntheticConstructorDemo} and {@link BridgeMethodDemo} classes.
+ * 
+ * @author Donato Rimenti
+ *
+ */
+public class SyntheticUnitTest {
+
+    /**
+     * Tests that the {@link SyntheticMethodDemo.NestedClass} contains two synthetic
+     * methods.
+     */
+    @Test
+    public void givenSyntheticMethod_whenIsSinthetic_thenTrue() {
+        // Checks that the nested class contains exactly two synthetic methods.
+        Method[] methods = SyntheticMethodDemo.NestedClass.class.getDeclaredMethods();
+        Assert.assertEquals("This class should contain only two methods", 2, methods.length);
+
+        for (Method m : methods) {
+            System.out.println("Method: " + m.getName() + ", isSynthetic: " + m.isSynthetic());
+            Assert.assertTrue("All the methods of this class should be synthetic", m.isSynthetic());
+        }
+    }
+
+    /**
+     * Tests that {@link SyntheticConstructorDemo.NestedClass} contains a synthetic
+     * constructor.
+     */
+    @Test
+    public void givenSyntheticConstructor_whenIsSinthetic_thenTrue() {
+        // Checks that the nested class contains exactly a synthetic
+        // constructor.
+        int syntheticConstructors = 0;
+        Constructor<?>[] constructors = SyntheticConstructorDemo.NestedClass.class.getDeclaredConstructors();
+        Assert.assertEquals("This class should contain only two constructors", 2, constructors.length);
+
+        for (Constructor<?> c : constructors) {
+            System.out.println("Constructor: " + c.getName() + ", isSynthetic: " + c.isSynthetic());
+
+            // Counts the synthetic constructors.
+            if (c.isSynthetic()) {
+                syntheticConstructors++;
+            }
+        }
+
+        // Checks that there's exactly one synthetic constructor.
+        Assert.assertEquals(1, syntheticConstructors);
+    }
+
+    /**
+     * Tests that {@link SyntheticFieldDemo.NestedClass} contains a synthetic field.
+     */
+    @Test
+    public void givenSyntheticField_whenIsSinthetic_thenTrue() {
+        // This class should contain exactly one synthetic field.
+        Field[] fields = SyntheticFieldDemo.NestedClass.class.getDeclaredFields();
+        Assert.assertEquals("This class should contain only one field", 1, fields.length);
+
+        for (Field f : fields) {
+            System.out.println("Field: " + f.getName() + ", isSynthetic: " + f.isSynthetic());
+            Assert.assertTrue("All the fields of this class should be synthetic", f.isSynthetic());
+        }
+    }
+
+    /**
+     * Tests that {@link BridgeMethodDemo} contains a synthetic bridge method.
+     */
+    @Test
+    public void givenBridgeMethod_whenIsBridge_thenTrue() {
+        // This class should contain exactly one synthetic bridge method.
+        int syntheticMethods = 0;
+        Method[] methods = BridgeMethodDemo.class.getDeclaredMethods();
+        for (Method m : methods) {
+            System.out.println(
+                    "Method: " + m.getName() + ", isSynthetic: " + m.isSynthetic() + ", isBridge: " + m.isBridge());
+
+            // Counts the synthetic methods and checks that they are also bridge
+            // methods.
+            if (m.isSynthetic()) {
+                syntheticMethods++;
+                Assert.assertTrue("The synthetic method in this class should also be a bridge method", m.isBridge());
+            }
+        }
+        
+        // Checks that there's exactly one synthetic bridge method.
+        Assert.assertEquals("There should be exactly 1 synthetic bridge method in this class", 1, syntheticMethods);
+    }
+
+}

couchbase/pom.xml

@@ -3,11 +3,11 @@
     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>couchbase-sdk</artifactId>
+    <artifactId>couchbase</artifactId>
     <version>0.1-SNAPSHOT</version>
     <packaging>jar</packaging>
     <name>couchbase</name>
-    <description>Couchbase SDK Tutorials</description>
+    <description>Couchbase Tutorials</description>
 
     <parent>
         <groupId>com.baeldung</groupId>

ejb/wildfly/pom.xml

@@ -2,9 +2,10 @@
          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.wildfly</groupId>
-    <artifactId>wildfly-example</artifactId>
+    <artifactId>wildfly</artifactId>
     <version>0.0.1-SNAPSHOT</version>
     <packaging>pom</packaging>
+	<name>wildfly</name>
 
     <parent>
         <groupId>com.baeldung.ejb</groupId>

ejb/wildfly/wildfly-mdb/pom.xml

@@ -1,7 +1,8 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <artifactId>widlfly-mdb</artifactId>
+    <artifactId>wildfly-mdb</artifactId>
+	<name>wildfly-mdb</name>
 	
     <parent>
         <groupId>com.baeldung.wildfly</groupId>

feign/pom.xml

@@ -3,7 +3,8 @@
     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.feign</groupId>
-    <artifactId>feign-client</artifactId>
+    <artifactId>feign</artifactId>
+	<name>feign</name>
 
     <parent>
         <groupId>com.baeldung</groupId>

google-web-toolkit/pom.xml

@@ -6,9 +6,10 @@
 	<!-- POM file generated with GWT webAppCreator -->
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>com.baeldung</groupId>
-	<artifactId>google_web_toolkit</artifactId>
+	<artifactId>google-web-toolkit</artifactId>
 	<packaging>war</packaging>
 	<version>1.0-SNAPSHOT</version>
+	<name>google-web-toolkit</name>
 	
     <parent>
         <groupId>com.baeldung</groupId>

grpc/pom.xml

@@ -1,10 +1,10 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <groupId>grpc</groupId>
+    <artifactId>grpc</artifactId>
-    <artifactId>grpc-demo</artifactId>
     <version>0.0.1-SNAPSHOT</version>
     <packaging>jar</packaging>
+	<name>grpc</name>
 	
     <parent>
         <groupId>com.baeldung</groupId>

guest/remote-debugging/pom.xml

@@ -3,9 +3,10 @@
     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.stackify</groupId>
-    <artifactId>java-remote-debugging</artifactId>
+    <artifactId>remote-debugging</artifactId>
     <version>0.0.1-SNAPSHOT</version>
     <packaging>war</packaging>
+	<name>remote-debugging</name>
 
     <parent>
         <groupId>org.springframework.boot</groupId>

jhipster/jhipster-microservice/car-app/pom.xml

@@ -10,10 +10,10 @@
         <relativePath>../../../parent-boot-1</relativePath>
     </parent>
     <groupId>com.car.app</groupId>
-    <artifactId>carapp</artifactId>
+    <artifactId>car-app</artifactId>
     <version>0.0.1-SNAPSHOT</version>
     <packaging>war</packaging>
-    <name>Carapp</name>
+    <name>car-app</name>
 
     <prerequisites>
         <maven>${maven.version}</maven>

jhipster/jhipster-microservice/dealer-app/pom.xml

@@ -3,10 +3,10 @@
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.dealer.app</groupId>
-    <artifactId>dealerapp</artifactId>
+    <artifactId>dealer-app</artifactId>
     <version>0.0.1-SNAPSHOT</version>
     <packaging>war</packaging>
-    <name>Dealerapp</name>
+    <name>dealer-app</name>
 
     <parent>
         <artifactId>parent-boot-1</artifactId>

jhipster/jhipster-microservice/gateway-app/pom.xml

@@ -3,10 +3,10 @@
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.gateway</groupId>
-    <artifactId>gateway</artifactId>
+    <artifactId>gateway-app</artifactId>
     <version>0.0.1-SNAPSHOT</version>
     <packaging>war</packaging>
-    <name>Gateway</name>
+    <name>gateway-app</name>
 
     <parent>
         <artifactId>parent-boot-1</artifactId>

jjwt/pom.xml

@@ -3,10 +3,10 @@
     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>io.jsonwebtoken</groupId>
-    <artifactId>jjwtfun</artifactId>
+    <artifactId>jjwt</artifactId>
     <version>0.0.1-SNAPSHOT</version>
     <packaging>jar</packaging>
-    <name>jjwtfun</name>
+    <name>jjwt</name>
     <description>Exercising the JJWT</description>
 
     <parent>

libraries/pom.xml

@@ -154,6 +154,17 @@
             <artifactId>commons-dbutils</artifactId>
             <version>${commons.dbutils.version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.apache.flink</groupId>
+            <artifactId>flink-connector-kafka-0.11_2.11</artifactId>
+            <version>${flink.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.flink</groupId>
+            <artifactId>flink-streaming-java_2.11</artifactId>
+            <version>${flink.version}</version>
+        </dependency>
+
         <dependency>
             <groupId>org.apache.flink</groupId>
             <artifactId>flink-core</artifactId>
@@ -178,7 +189,7 @@
         </dependency>
         <dependency>
             <groupId>org.apache.flink</groupId>
-            <artifactId>flink-test-utils_2.10</artifactId>
+            <artifactId>flink-test-utils_2.11</artifactId>
             <version>${flink.version}</version>
             <scope>test</scope>
         </dependency>
@@ -228,6 +239,11 @@
             <artifactId>jackson-databind</artifactId>
             <version>${jackson.version}</version>
         </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.datatype</groupId>
+            <artifactId>jackson-datatype-jsr310</artifactId>
+            <version>${jackson.version}</version>
+        </dependency>
         <!-- JDO -->
         <dependency>
             <groupId>org.datanucleus</groupId>
@@ -902,7 +918,7 @@
 
         <httpclient.version>4.5.3</httpclient.version>
         <commons.io.version>2.5</commons.io.version>
-        <flink.version>1.2.0</flink.version>
+        <flink.version>1.5.0</flink.version>
         <jackson.version>2.8.5</jackson.version>
         <neuroph.version>2.92</neuroph.version>
         <serenity.version>1.9.26</serenity.version>

libraries/src/main/java/com/baeldung/flink/FlinkDataPipeline.java

@@ -0,0 +1,82 @@
+package com.baeldung.flink;
+
+
+import com.baeldung.flink.model.Backup;
+import com.baeldung.flink.model.InputMessage;
+import com.baeldung.flink.operator.BackupAggregator;
+import com.baeldung.flink.operator.InputMessageTimestampAssigner;
+import com.baeldung.flink.operator.WordsCapitalizer;
+import org.apache.flink.streaming.api.TimeCharacteristic;
+import org.apache.flink.streaming.api.datastream.DataStream;
+import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
+import org.apache.flink.streaming.api.windowing.time.Time;
+import org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumer011;
+import org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011;
+
+import static com.baeldung.flink.connector.Consumers.*;
+import static com.baeldung.flink.connector.Producers.*;
+
+public class FlinkDataPipeline {
+
+    public static void capitalize() throws Exception {
+        String inputTopic = "flink_input";
+        String outputTopic = "flink_output";
+        String consumerGroup = "baeldung";
+        String address = "localhost:9092";
+
+        StreamExecutionEnvironment environment =
+          StreamExecutionEnvironment.getExecutionEnvironment();
+
+        FlinkKafkaConsumer011<String> flinkKafkaConsumer =
+          createStringConsumerForTopic(inputTopic, address, consumerGroup);
+        flinkKafkaConsumer.setStartFromEarliest();
+
+        DataStream<String> stringInputStream =
+          environment.addSource(flinkKafkaConsumer);
+
+        FlinkKafkaProducer011<String> flinkKafkaProducer =
+        createStringProducer(outputTopic, address);
+
+        stringInputStream
+          .map(new WordsCapitalizer())
+          .addSink(flinkKafkaProducer);
+
+        environment.execute();
+    }
+
+public static void createBackup () throws Exception {
+    String inputTopic = "flink_input";
+    String outputTopic = "flink_output";
+    String consumerGroup = "baeldung";
+    String kafkaAddress = "localhost:9092";
+
+    StreamExecutionEnvironment environment =
+      StreamExecutionEnvironment.getExecutionEnvironment();
+
+    environment.setStreamTimeCharacteristic(TimeCharacteristic.EventTime);
+
+    FlinkKafkaConsumer011<InputMessage> flinkKafkaConsumer =
+      createInputMessageConsumer(inputTopic, kafkaAddress, consumerGroup);
+    flinkKafkaConsumer.setStartFromEarliest();
+
+    flinkKafkaConsumer
+      .assignTimestampsAndWatermarks(new InputMessageTimestampAssigner());
+    FlinkKafkaProducer011<Backup> flinkKafkaProducer =
+      createBackupProducer(outputTopic, kafkaAddress);
+
+    DataStream<InputMessage> inputMessagesStream =
+      environment.addSource(flinkKafkaConsumer);
+
+    inputMessagesStream
+      .timeWindowAll(Time.hours(24))
+      .aggregate(new BackupAggregator())
+      .addSink(flinkKafkaProducer);
+
+    environment.execute();
+}
+
+    public static void main(String[] args) throws Exception {
+        createBackup();
+    }
+
+}

libraries/src/main/java/com/baeldung/flink/connector/Consumers.java

@@ -0,0 +1,32 @@
+package com.baeldung.flink.connector;
+
+import com.baeldung.flink.model.InputMessage;
+import com.baeldung.flink.schema.InputMessageDeserializationSchema;
+import org.apache.flink.api.common.serialization.SimpleStringSchema;
+import org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumer011;
+
+import java.util.Properties;
+
+public class Consumers {
+
+public static FlinkKafkaConsumer011<String> createStringConsumerForTopic(
+  String topic, String kafkaAddress, String kafkaGroup ) {
+    Properties props = new Properties();
+    props.setProperty("bootstrap.servers", kafkaAddress);
+    props.setProperty("group.id",kafkaGroup);
+    FlinkKafkaConsumer011<String> consumer =
+      new FlinkKafkaConsumer011<>(topic, new SimpleStringSchema(),props);
+
+    return consumer;
+}
+
+    public static FlinkKafkaConsumer011<InputMessage> createInputMessageConsumer(String topic, String kafkaAddress, String kafkaGroup ) {
+        Properties properties = new Properties();
+        properties.setProperty("bootstrap.servers", kafkaAddress);
+        properties.setProperty("group.id",kafkaGroup);
+        FlinkKafkaConsumer011<InputMessage> consumer = new FlinkKafkaConsumer011<InputMessage>(
+                topic, new InputMessageDeserializationSchema(),properties);
+
+        return consumer;
+    }
+}

libraries/src/main/java/com/baeldung/flink/connector/Producers.java

@@ -0,0 +1,17 @@
+package com.baeldung.flink.connector;
+
+import com.baeldung.flink.model.Backup;
+import com.baeldung.flink.schema.BackupSerializationSchema;
+import org.apache.flink.api.common.serialization.SimpleStringSchema;
+import org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011;
+
+public class Producers {
+
+    public static FlinkKafkaProducer011<String> createStringProducer(String topic, String kafkaAddress) {
+        return new FlinkKafkaProducer011<>(kafkaAddress, topic, new SimpleStringSchema());
+    }
+
+    public static FlinkKafkaProducer011<Backup> createBackupProducer(String topic, String kafkaAddress) {
+        return new FlinkKafkaProducer011<Backup>(kafkaAddress, topic, new BackupSerializationSchema());
+    }
+}

libraries/src/main/java/com/baeldung/flink/model/Backup.java

@@ -0,0 +1,27 @@
+package com.baeldung.flink.model;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+import java.time.LocalDateTime;
+import java.util.List;
+import java.util.UUID;
+
+public class Backup {
+
+    @JsonProperty("inputMessages")
+    List<InputMessage> inputMessages;
+    @JsonProperty("backupTimestamp")
+    LocalDateTime backupTimestamp;
+    @JsonProperty("uuid")
+    UUID uuid;
+
+    public Backup(List<InputMessage> inputMessages, LocalDateTime backupTimestamp) {
+        this.inputMessages = inputMessages;
+        this.backupTimestamp = backupTimestamp;
+        this.uuid = UUID.randomUUID();
+    }
+
+    public List<InputMessage> getInputMessages() {
+        return inputMessages;
+    }
+}

libraries/src/main/java/com/baeldung/flink/model/InputMessage.java

@@ -0,0 +1,72 @@
+package com.baeldung.flink.model;
+
+import com.fasterxml.jackson.databind.annotation.JsonSerialize;
+import com.google.common.base.Objects;
+
+import java.time.LocalDateTime;
+
+@JsonSerialize
+public class InputMessage {
+    String sender;
+    String recipient;
+    LocalDateTime sentAt;
+    String message;
+
+    public InputMessage() {
+    }
+
+    public String getSender() {
+        return sender;
+    }
+
+    public void setSender(String sender) {
+        this.sender = sender;
+    }
+
+    public String getRecipient() {
+        return recipient;
+    }
+
+    public void setRecipient(String recipient) {
+        this.recipient = recipient;
+    }
+
+    public LocalDateTime getSentAt() {
+        return sentAt;
+    }
+
+    public void setSentAt(LocalDateTime sentAt) {
+        this.sentAt = sentAt;
+    }
+
+    public String getMessage() {
+        return message;
+    }
+
+    public void setMessage(String message) {
+        this.message = message;
+    }
+
+    public InputMessage(String sender, String recipient, LocalDateTime sentAt, String message) {
+        this.sender = sender;
+        this.recipient = recipient;
+        this.sentAt = sentAt;
+        this.message = message;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        InputMessage message1 = (InputMessage) o;
+        return Objects.equal(sender, message1.sender) &&
+                Objects.equal(recipient, message1.recipient) &&
+                Objects.equal(sentAt, message1.sentAt) &&
+                Objects.equal(message, message1.message);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hashCode(sender, recipient, sentAt, message);
+    }
+}

libraries/src/main/java/com/baeldung/flink/operator/BackupAggregator.java

@@ -0,0 +1,34 @@
+package com.baeldung.flink.operator;
+
+import com.baeldung.flink.model.Backup;
+import com.baeldung.flink.model.InputMessage;
+import org.apache.flink.api.common.functions.AggregateFunction;
+
+import java.time.LocalDateTime;
+import java.util.ArrayList;
+import java.util.List;
+
+    public class BackupAggregator implements AggregateFunction<InputMessage, List<InputMessage>, Backup> {
+        @Override
+        public List<InputMessage> createAccumulator() {
+            return new ArrayList<>();
+        }
+
+        @Override
+        public List<InputMessage> add(InputMessage inputMessage, List<InputMessage> inputMessages) {
+            inputMessages.add(inputMessage);
+            return inputMessages;
+        }
+
+        @Override
+        public Backup getResult(List<InputMessage> inputMessages) {
+            Backup backup = new Backup(inputMessages, LocalDateTime.now());
+                return backup;
+        }
+
+        @Override
+        public List<InputMessage> merge(List<InputMessage> inputMessages, List<InputMessage> acc1) {
+            inputMessages.addAll(acc1);
+            return inputMessages;
+        }
+    }

libraries/src/main/java/com/baeldung/flink/operator/InputMessageTimestampAssigner.java

@@ -0,0 +1,23 @@
+package com.baeldung.flink.operator;
+
+import com.baeldung.flink.model.InputMessage;
+import org.apache.flink.streaming.api.functions.AssignerWithPunctuatedWatermarks;
+import org.apache.flink.streaming.api.watermark.Watermark;
+
+import javax.annotation.Nullable;
+import java.time.ZoneId;
+
+public class InputMessageTimestampAssigner implements AssignerWithPunctuatedWatermarks<InputMessage> {
+
+    @Override
+    public long extractTimestamp(InputMessage element, long previousElementTimestamp) {
+        ZoneId zoneId = ZoneId.systemDefault();
+        return element.getSentAt().atZone(zoneId).toEpochSecond() * 1000;
+    }
+
+    @Nullable
+    @Override
+    public Watermark checkAndGetNextWatermark(InputMessage lastElement, long extractedTimestamp) {
+        return new Watermark(extractedTimestamp - 15);
+    }
+}

libraries/src/main/java/com/baeldung/flink/operator/WordsCapitalizer.java

@@ -0,0 +1,11 @@
+package com.baeldung.flink.operator;
+
+import org.apache.flink.api.common.functions.MapFunction;
+
+public class WordsCapitalizer implements MapFunction<String, String> {
+
+    @Override
+    public String map(String s) {
+        return s.toUpperCase();
+    }
+}

libraries/src/main/java/com/baeldung/flink/schema/BackupSerializationSchema.java

@@ -0,0 +1,33 @@
+package com.baeldung.flink.schema;
+
+import com.baeldung.flink.model.Backup;
+import com.fasterxml.jackson.annotation.JsonAutoDetect;
+import com.fasterxml.jackson.annotation.PropertyAccessor;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
+import org.apache.flink.api.common.serialization.SerializationSchema;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class BackupSerializationSchema
+  implements SerializationSchema<Backup> {
+
+    static ObjectMapper objectMapper = new ObjectMapper().registerModule(new JavaTimeModule());
+
+    Logger logger = LoggerFactory.getLogger(BackupSerializationSchema.class);
+
+    @Override
+    public byte[] serialize(Backup backupMessage) {
+        if(objectMapper == null) {
+            objectMapper.setVisibility(PropertyAccessor.FIELD, JsonAutoDetect.Visibility.ANY);
+            objectMapper = new ObjectMapper().registerModule(new JavaTimeModule());
+        }
+        try {
+            String json = objectMapper.writeValueAsString(backupMessage);
+            return json.getBytes();
+        } catch (com.fasterxml.jackson.core.JsonProcessingException e) {
+            logger.error("Failed to parse JSON", e);
+        }
+        return new byte[0];
+    }
+}

libraries/src/main/java/com/baeldung/flink/schema/InputMessageDeserializationSchema.java

@@ -0,0 +1,34 @@
+package com.baeldung.flink.schema;
+
+import com.baeldung.flink.model.InputMessage;
+import com.fasterxml.jackson.annotation.JsonAutoDetect;
+import com.fasterxml.jackson.annotation.PropertyAccessor;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
+import org.apache.flink.api.common.serialization.DeserializationSchema;
+import org.apache.flink.api.common.typeinfo.TypeInformation;
+
+import java.io.IOException;
+
+public class InputMessageDeserializationSchema implements
+      DeserializationSchema<InputMessage> {
+
+    static ObjectMapper objectMapper = new ObjectMapper().registerModule(new JavaTimeModule());
+
+
+    @Override
+    public InputMessage deserialize(byte[] bytes) throws IOException {
+
+        return objectMapper.readValue(bytes, InputMessage.class);
+    }
+
+    @Override
+    public boolean isEndOfStream(InputMessage inputMessage) {
+        return false;
+    }
+
+    @Override
+    public TypeInformation<InputMessage> getProducedType() {
+        return TypeInformation.of(InputMessage.class);
+    }
+}

libraries/src/test/java/com/baeldung/flink/BackupCreatorIntegrationTest.java

@@ -0,0 +1,103 @@
+package com.baeldung.flink;
+
+import com.baeldung.flink.model.Backup;
+import com.baeldung.flink.model.InputMessage;
+import com.baeldung.flink.operator.BackupAggregator;
+import com.baeldung.flink.operator.InputMessageTimestampAssigner;
+import com.baeldung.flink.schema.BackupSerializationSchema;
+import com.baeldung.flink.schema.InputMessageDeserializationSchema;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
+import org.apache.commons.collections.ListUtils;
+import org.apache.flink.api.common.serialization.DeserializationSchema;
+import org.apache.flink.api.common.serialization.SerializationSchema;
+import org.apache.flink.streaming.api.TimeCharacteristic;
+import org.apache.flink.streaming.api.datastream.DataStreamSource;
+import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
+import org.apache.flink.streaming.api.functions.sink.SinkFunction;
+import org.apache.flink.streaming.api.windowing.time.Time;
+import org.awaitility.Awaitility;
+import org.junit.Before;
+import org.junit.Test;
+
+import java.io.IOException;
+import java.time.LocalDateTime;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+import static org.junit.Assert.assertEquals;
+
+public class BackupCreatorIntegrationTest {
+    public static ObjectMapper mapper;
+
+    @Before
+    public void setup() {
+        mapper = new ObjectMapper().registerModule(new JavaTimeModule());
+    }
+
+    @Test
+    public void givenProperJson_whenDeserializeIsInvoked_thenProperObjectIsReturned() throws IOException {
+        InputMessage message = new InputMessage("Me", "User", LocalDateTime.now(), "Test Message");
+        byte[] messageSerialized = mapper.writeValueAsBytes(message);
+        DeserializationSchema<InputMessage> deserializationSchema = new InputMessageDeserializationSchema();
+        InputMessage messageDeserialized = deserializationSchema.deserialize(messageSerialized);
+
+        assertEquals(message, messageDeserialized);
+    }
+
+    @Test
+    public void givenMultipleInputMessagesFromDifferentDays_whenBackupCreatorIsUser_thenMessagesAreGroupedProperly() throws Exception {
+        LocalDateTime currentTime = LocalDateTime.now();
+        InputMessage message = new InputMessage("Me", "User", currentTime, "First TestMessage");
+        InputMessage secondMessage = new InputMessage("Me", "User", currentTime.plusHours(1), "First TestMessage");
+        InputMessage thirdMessage = new InputMessage("Me", "User", currentTime.plusHours(2), "First TestMessage");
+        InputMessage fourthMessage = new InputMessage("Me", "User", currentTime.plusHours(3), "First TestMessage");
+        InputMessage fifthMessage = new InputMessage("Me", "User", currentTime.plusHours(25), "First TestMessage");
+        InputMessage sixthMessage = new InputMessage("Me", "User", currentTime.plusHours(26), "First TestMessage");
+
+        List<InputMessage> firstBackupMessages = Arrays.asList(message, secondMessage, thirdMessage, fourthMessage);
+        List<InputMessage> secondBackupMessages = Arrays.asList(fifthMessage, sixthMessage);
+        List<InputMessage> inputMessages = ListUtils.union(firstBackupMessages, secondBackupMessages);
+
+        StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
+        env.setStreamTimeCharacteristic(TimeCharacteristic.EventTime);
+        env.setParallelism(1);
+        DataStreamSource<InputMessage> testDataSet = env.fromCollection(inputMessages);
+        CollectingSink sink = new CollectingSink();
+        testDataSet.assignTimestampsAndWatermarks(new InputMessageTimestampAssigner())
+          .timeWindowAll(Time.hours(24))
+          .aggregate(new BackupAggregator())
+          .addSink(sink);
+
+        env.execute();
+
+        Awaitility.await().until(() ->  sink.backups.size() == 2);
+        assertEquals(2, sink.backups.size());
+        assertEquals(firstBackupMessages, sink.backups.get(0).getInputMessages());
+        assertEquals(secondBackupMessages, sink.backups.get(1).getInputMessages());
+
+    }
+
+    @Test
+    public void givenProperBackupObject_whenSerializeIsInvoked_thenObjectIsProperlySerialized() throws IOException {
+        InputMessage message = new InputMessage("Me", "User", LocalDateTime.now(), "Test Message");
+        List<InputMessage> messages = Arrays.asList(message);
+        Backup backup = new Backup(messages, LocalDateTime.now());
+        byte[] backupSerialized = mapper.writeValueAsBytes(backup);
+        SerializationSchema<Backup> serializationSchema = new BackupSerializationSchema();
+        byte[] backupProcessed = serializationSchema.serialize(backup);
+        
+        assertEquals(backupSerialized, backupProcessed);
+    }
+
+    private static class CollectingSink implements SinkFunction<Backup> {
+        
+        public static List<Backup> backups = new ArrayList<>();
+
+        @Override
+        public synchronized void invoke(Backup value, Context context) throws Exception {
+            backups.add(value);
+        }
+    }
+}

libraries/src/test/java/com/baeldung/flink/WordCapitalizerIntegrationTest.java

@@ -0,0 +1,34 @@
+package com.baeldung.flink;
+
+import com.baeldung.flink.operator.WordsCapitalizer;
+import org.apache.flink.api.java.DataSet;
+import org.apache.flink.api.java.ExecutionEnvironment;
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.util.Arrays;
+import java.util.List;
+import java.util.stream.Collectors;
+
+public class WordCapitalizerIntegrationTest {
+
+    @Test
+    public void givenDataSet_whenExecuteWordCapitalizer_thenReturnCapitalizedWords() throws Exception {
+        ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
+        List<String> data = Arrays.asList("dog", "cat", "wolf", "pig");
+
+         DataSet<String> testDataSet = env.fromCollection(data);
+
+
+        List<String> dataProcessed = testDataSet
+          .map(new WordsCapitalizer())
+          .collect();
+
+        List<String> testDataCapitalized = data.stream()
+          .map(String::toUpperCase)
+          .collect(Collectors.toList());
+
+        Assert.assertEquals(testDataCapitalized, dataProcessed);
+    }
+
+}

micronaut/pom.xml

@@ -1,8 +1,10 @@
 <?xml version="1.0" encoding="UTF-8"?><project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 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.micronaut</groupId>
-  <artifactId>hello-world</artifactId>
+  <artifactId>micronaut</artifactId>
   <version>0.1</version>
+  <name>micronaut</name>
+  
   <properties>
     <exec.mainClass>com.baeldung.micronaut.helloworld.server.ServerApplication</exec.mainClass>
     <micronaut.version>1.0.0.M2</micronaut.version>

osgi/osgi-intro-sample-activator/pom.xml

@@ -8,7 +8,7 @@
 
     <!-- com.baeldung/osgi-intro-sample-activator/1.0-SNAPSHOT -->
     <parent>
-        <artifactId>osgi-intro</artifactId>
+        <artifactId>osgi</artifactId>
         <groupId>com.baeldung</groupId>
         <version>1.0-SNAPSHOT</version>
     </parent>

osgi/osgi-intro-sample-client/pom.xml

@@ -8,7 +8,7 @@
     <packaging>bundle</packaging>
 
     <parent>
-        <artifactId>osgi-intro</artifactId>
+        <artifactId>osgi</artifactId>
         <groupId>com.baeldung</groupId>
         <version>1.0-SNAPSHOT</version>
     </parent>

osgi/osgi-intro-sample-service/pom.xml

@@ -8,7 +8,7 @@
 
     <!-- mvn:com.baeldung/osgi-intro-sample-service/1.0-SNAPSHOT -->
     <parent>
-        <artifactId>osgi-intro</artifactId>
+        <artifactId>osgi</artifactId>
         <groupId>com.baeldung</groupId>
         <version>1.0-SNAPSHOT</version>
     </parent>

osgi/pom.xml

@@ -2,9 +2,10 @@
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0"
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <artifactId>osgi-intro</artifactId>
+    <artifactId>osgi</artifactId>
     <packaging>pom</packaging>
     <version>1.0-SNAPSHOT</version>
+	<name>osgi</name>
 
     <parent>
         <groupId>com.baeldung</groupId>

patterns/design-patterns/pom.xml

@@ -2,13 +2,12 @@
 <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>design-patterns</artifactId>
     <version>1.0</version>
     <packaging>jar</packaging>
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>patterns-parent</artifactId>
+        <artifactId>patterns</artifactId>
         <version>1.0.0-SNAPSHOT</version>
         <relativePath>..</relativePath>
     </parent>

patterns/front-controller/pom.xml

@@ -6,7 +6,7 @@
     <packaging>war</packaging>
 
     <parent>
-        <artifactId>patterns-parent</artifactId>
+        <artifactId>patterns</artifactId>
         <groupId>com.baeldung</groupId>
         <version>1.0.0-SNAPSHOT</version>
         <relativePath>..</relativePath>

patterns/intercepting-filter/pom.xml

@@ -8,7 +8,7 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>patterns-parent</artifactId>
+        <artifactId>patterns</artifactId>
         <version>1.0.0-SNAPSHOT</version>
         <relativePath>..</relativePath>
     </parent>

patterns/pom.xml

@@ -2,8 +2,7 @@
 <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>patterns</artifactId>
-    <artifactId>patterns-parent</artifactId>
     <packaging>pom</packaging>
 
     <parent>

performance-tests/pom.xml

@@ -3,7 +3,7 @@
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <artifactId>performancetests</artifactId>
+    <artifactId>performance-tests</artifactId>
 
     <parent>
         <artifactId>parent-modules</artifactId>

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

@@ -2,10 +2,10 @@
     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>spring-boot-dynamodb</artifactId>
+    <artifactId>spring-data-dynamodb</artifactId>
     <version>0.0.1-SNAPSHOT</version>
     <packaging>jar</packaging>
-    <name>spring-boot-dynamodb</name>
+    <name>spring-data-dynamodb</name>
     <description>This is simple boot application for Spring boot dynamodb test</description>
 
     <parent>

resteasy/pom.xml

@@ -3,9 +3,10 @@
          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>resteasy-tutorial</artifactId>
+    <artifactId>resteasy</artifactId>
     <version>1.0</version>
     <packaging>war</packaging>
+	<name>resteasy</name>
 
     <parent>
         <groupId>com.baeldung</groupId>

spring-5-mvc/src/main/java/com/baeldung/web/SseEmitterController.java

@@ -1,12 +1,16 @@
 package com.baeldung.web;
 
-import com.baeldung.Constants;
+import java.time.LocalTime;
 import java.util.Date;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
+
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.servlet.mvc.method.annotation.SseEmitter;
+import org.springframework.web.servlet.mvc.method.annotation.SseEmitter.SseEventBuilder;
+
+import com.baeldung.Constants;
 
 @Controller
 public class SseEmitterController {
@@ -29,4 +33,27 @@ public class SseEmitterController {
         return emitter;
     }
 
+    @GetMapping("/stream-sse-mvc")
+    public SseEmitter streamSseMvc() {
+        SseEmitter emitter = new SseEmitter();
+        ExecutorService sseMvcExecutor = Executors.newSingleThreadExecutor();
+
+        sseMvcExecutor.execute(() -> {
+            try {
+                for (int i = 0; true; i++) {
+                    SseEventBuilder event = SseEmitter.event()
+                        .data("SSE MVC - " + LocalTime.now()
+                            .toString())
+                        .id(String.valueOf(i))
+                        .name("sse event - mvc");
+                    emitter.send(event);
+                    Thread.sleep(1000);
+                }
+            } catch (Exception ex) {
+                emitter.completeWithError(ex);
+            }
+        });
+        return emitter;
+    }
+
 }

spring-5-reactive/pom.xml

@@ -94,6 +94,12 @@
             <version>${project-reactor-test}</version>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>org.junit.platform</groupId>
+            <artifactId>junit-platform-runner</artifactId>
+            <version>${junit.platform.version}</version>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
     <build>
@@ -117,6 +123,7 @@
         <geronimo-json_1.1_spec.version>1.0</geronimo-json_1.1_spec.version>
         <commons-collections4.version>4.1</commons-collections4.version>
         <project-reactor-test>3.1.6.RELEASE</project-reactor-test>
+        <junit.platform.version>1.2.0</junit.platform.version>
     </properties>
 
 </project>

spring-5-reactive/src/main/java/com/baeldung/reactive/serversentevents/consumer/ConsumerSSEApplication.java

@@ -0,0 +1,19 @@
+package com.baeldung.reactive.serversentevents.consumer;
+
+import java.util.Collections;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.scheduling.annotation.EnableAsync;
+
+@SpringBootApplication
+@EnableAsync
+public class ConsumerSSEApplication {
+
+    public static void main(String[] args) {
+        SpringApplication app = new SpringApplication(ConsumerSSEApplication.class);
+        app.setDefaultProperties(Collections.singletonMap("server.port", "8082"));
+        app.run(args);
+    }
+
+}

spring-5-reactive/src/main/java/com/baeldung/reactive/serversentevents/consumer/controller/ClientController.java

@@ -0,0 +1,83 @@
+package com.baeldung.reactive.serversentevents.consumer.controller;
+
+import java.time.LocalTime;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.core.ParameterizedTypeReference;
+import org.springframework.http.MediaType;
+import org.springframework.http.codec.ServerSentEvent;
+import org.springframework.scheduling.annotation.Async;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.reactive.function.client.WebClient;
+
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
+
+@RestController
+@RequestMapping("/sse-consumer")
+public class ClientController {
+
+    private static Logger logger = LoggerFactory.getLogger(ClientController.class);
+    private WebClient client = WebClient.create("http://localhost:8081/sse-server");
+
+    @GetMapping("/launch-sse-client")
+    public String launchSSEFromSSEWebClient() {
+        consumeSSE();
+        return "LAUNCHED EVENT CLIENT!!! Check the logs...";
+    }
+
+    @GetMapping("/launch-flux-client")
+    public String launchcFluxFromSSEWebClient() {
+        consumeFlux();
+        return "LAUNCHED EVENT CLIENT!!! Check the logs...";
+    }
+
+    @GetMapping("/launch-sse-from-flux-endpoint-client")
+    public String launchFluxFromFluxWebClient() {
+        consumeSSEFromFluxEndpoint();
+        return "LAUNCHED EVENT CLIENT!!! Check the logs...";
+    }
+
+    @Async
+    public void consumeSSE() {
+        ParameterizedTypeReference<ServerSentEvent<String>> type = new ParameterizedTypeReference<ServerSentEvent<String>>() {
+        };
+
+        Flux<ServerSentEvent<String>> eventStream = client.get()
+            .uri("/stream-sse")
+            .retrieve()
+            .bodyToFlux(type);
+
+        eventStream.subscribe(content -> logger.info("Current time: {} - Received SSE: name[{}], id [{}], content[{}] ", LocalTime.now(), content.event(), content.id(), content.data()), error -> logger.error("Error receiving SSE: {}", error),
+            () -> logger.info("Completed!!!"));
+    }
+
+    @Async
+    public void consumeFlux() {
+        Flux<String> stringStream = client.get()
+            .uri("/stream-flux")
+            .accept(MediaType.TEXT_EVENT_STREAM)
+            .retrieve()
+            .bodyToFlux(String.class);
+
+        stringStream.subscribe(content -> logger.info("Current time: {} - Received content: {} ", LocalTime.now(), content), error -> logger.error("Error retrieving content: {}", error), () -> logger.info("Completed!!!"));
+    }
+
+    @Async
+    public void consumeSSEFromFluxEndpoint() {
+        ParameterizedTypeReference<ServerSentEvent<String>> type = new ParameterizedTypeReference<ServerSentEvent<String>>() {
+        };
+
+        Flux<ServerSentEvent<String>> eventStream = client.get()
+            .uri("/stream-flux")
+            .accept(MediaType.TEXT_EVENT_STREAM)
+            .retrieve()
+            .bodyToFlux(type);
+
+        eventStream.subscribe(content -> logger.info("Current time: {} - Received SSE: name[{}], id [{}], content[{}] ", LocalTime.now(), content.event(), content.id(), content.data()), error -> logger.error("Error receiving SSE: {}", error),
+            () -> logger.info("Completed!!!"));
+    }
+}

spring-5-reactive/src/main/java/com/baeldung/reactive/serversentevents/server/ServerSSEApplication.java

@@ -0,0 +1,17 @@
+package com.baeldung.reactive.serversentevents.server;
+
+import java.util.Collections;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class ServerSSEApplication {
+    
+    public static void main(String[] args) {
+        SpringApplication app = new SpringApplication(ServerSSEApplication.class);
+        app.setDefaultProperties(Collections.singletonMap("server.port", "8081"));
+        app.run(args);
+    }
+
+}

spring-5-reactive/src/main/java/com/baeldung/reactive/serversentevents/server/controllers/ServerController.java

@@ -0,0 +1,35 @@
+package com.baeldung.reactive.serversentevents.server.controllers;
+
+import java.time.Duration;
+import java.time.LocalTime;
+
+import org.springframework.http.MediaType;
+import org.springframework.http.codec.ServerSentEvent;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import reactor.core.publisher.Flux;
+
+@RestController
+@RequestMapping("/sse-server")
+public class ServerController {
+
+    @GetMapping("/stream-sse")
+    public Flux<ServerSentEvent<String>> streamEvents() {
+        return Flux.interval(Duration.ofSeconds(1))
+            .map(sequence -> ServerSentEvent.<String> builder()
+                .id(String.valueOf(sequence))
+                .event("periodic-event")
+                .data("SSE - " + LocalTime.now()
+                    .toString())
+                .build());
+    }
+
+    @GetMapping(path = "/stream-flux", produces = MediaType.TEXT_EVENT_STREAM_VALUE)
+    public Flux<String> streamFlux() {
+        return Flux.interval(Duration.ofSeconds(1))
+            .map(sequence -> "Flux - " + LocalTime.now()
+                .toString());
+    }
+}

spring-5-reactive/src/test/java/com/baeldung/reactive/serversentsevents/ServiceSentEventLiveTest.java

@@ -0,0 +1,49 @@
+package com.baeldung.reactive.serversentsevents;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.function.Executable;
+import org.junit.platform.runner.JUnitPlatform;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.http.MediaType;
+import org.springframework.test.web.reactive.server.WebTestClient;
+
+@RunWith(JUnitPlatform.class)
+@SpringBootTest
+public class ServiceSentEventLiveTest {
+
+    private WebTestClient client = WebTestClient.bindToServer()
+        .baseUrl("http://localhost:8081/sse-server")
+        .build();
+
+    @Test
+    public void whenSSEEndpointIsCalled_thenEventStreamingBegins() {
+
+        Executable sseStreamingCall = () -> client.get()
+            .uri("/stream-sse")
+            .exchange()
+            .expectStatus()
+            .isOk()
+            .expectHeader()
+            .contentTypeCompatibleWith(MediaType.TEXT_EVENT_STREAM)
+            .expectBody(String.class);
+
+        Assertions.assertThrows(IllegalStateException.class, sseStreamingCall, "Expected test to timeout and throw IllegalStateException, but it didn't");
+    }
+
+    @Test
+    public void whenFluxEndpointIsCalled_thenEventStreamingBegins() {
+
+        Executable sseStreamingCall = () -> client.get()
+            .uri("/stream-flux")
+            .exchange()
+            .expectStatus()
+            .isOk()
+            .expectHeader()
+            .contentTypeCompatibleWith(MediaType.TEXT_EVENT_STREAM)
+            .expectBody(String.class);
+
+        Assertions.assertThrows(IllegalStateException.class, sseStreamingCall, "Expected test to timeout and throw IllegalStateException, but it didn't");
+    }
+}

spring-amqp/pom.xml

@@ -2,10 +2,10 @@
     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>springamqp</artifactId>
+    <artifactId>spring-amqp</artifactId>
     <version>0.1-SNAPSHOT</version>
     <packaging>jar</packaging>
-    <name>springamqp</name>
+    <name>spring-amqp</name>
     <description>Introduction to Spring-AMQP</description>
 
     <parent>

spring-boot-h2/spring-boot-h2-database/.gitignore

@@ -0,0 +1,25 @@
+/target/
+!.mvn/wrapper/maven-wrapper.jar
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/build/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/

spring-boot-h2/spring-boot-h2-database/pom.xml

@@ -0,0 +1,52 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xmlns="http://maven.apache.org/POM/4.0.0"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>com.baeldung.h2db</groupId>
+    <artifactId>spring-boot-h2-database</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <packaging>jar</packaging>
+
+    <description>Demo Spring Boot applications that starts H2 in memory database</description>
+
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>2.0.4.RELEASE</version>
+        <relativePath/> <!-- lookup parent from repository -->
+    </parent>
+
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
+        <java.version>1.8</java.version>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-jpa</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>com.h2database</groupId>
+            <artifactId>h2</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
+</project>

spring-boot-h2/spring-boot-h2-database/src/main/java/com/baeldung/h2db/demo/SpringBootApp.java

@@ -0,0 +1,60 @@
+package com.baeldung.h2db.demo;
+
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.Arrays;
+import javax.annotation.PostConstruct;
+import org.h2.tools.Server;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Bean;
+import org.springframework.jdbc.core.JdbcTemplate;
+import org.springframework.jdbc.core.RowMapper;
+
+@SpringBootApplication
+public class SpringBootApp {
+
+    @Autowired
+    private JdbcTemplate jdbcTemplate;
+
+    public static void main(String[] args) {
+        SpringApplication.run(SpringBootApp.class, args);
+    }
+
+    @PostConstruct
+    private void initDb() {
+        System.out.println(String.format(
+            "****** Creating table: %s, and Inserting test data ******", "Employees"));
+
+        String sqlStatements[] = {
+            "drop table employees if exists",
+            "create table employees(id serial,first_name varchar(255),last_name varchar(255))",
+            "insert into employees(first_name, last_name) values('Eugen','Paraschiv')",
+            "insert into employees(first_name, last_name) values('Scott','Tiger')"
+        };
+
+        Arrays.asList(sqlStatements).stream().forEach(sql -> {
+            System.out.println(sql);
+            jdbcTemplate.execute(sql);
+        });
+
+        System.out.println(String.format("****** Fetching from table: %s ******", "Employees"));
+        jdbcTemplate.query("select id,first_name,last_name from employees",
+            new RowMapper<Object>() {
+                @Override
+                public Object mapRow(ResultSet rs, int i) throws SQLException {
+                    System.out.println(String.format("id:%s,first_name:%s,last_name:%s",
+                        rs.getString("id"),
+                        rs.getString("first_name"),
+                        rs.getString("last_name")));
+                    return null;
+                }
+            });
+    }
+
+    @Bean(initMethod = "start", destroyMethod = "stop")
+    public Server inMemoryH2DatabaseServer() throws SQLException {
+        return Server.createTcpServer("-tcp", "-tcpAllowOthers", "-tcpPort", "9091");
+    }
+}

spring-boot-h2/spring-boot-h2-database/src/main/resources/application.properties

@@ -0,0 +1,7 @@
+spring.datasource.url=jdbc:h2:mem:mydb
+spring.datasource.driverClassName=org.h2.Driver
+spring.datasource.username=sa
+spring.datasource.password=
+spring.jpa.hibernate.ddl-auto=create
+spring.h2.console.enabled=true
+spring.h2.console.path=/h2-console

spring-boot-h2/spring-boot-h2-remote-app/.gitignore

@@ -0,0 +1,25 @@
+/target/
+!.mvn/wrapper/maven-wrapper.jar
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/build/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/

spring-boot-h2/spring-boot-h2-remote-app/pom.xml

@@ -0,0 +1,55 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xmlns="http://maven.apache.org/POM/4.0.0"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>com.baeldung.h2db</groupId>
+    <artifactId>spring-boot-h2-remote-app</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <packaging>jar</packaging>
+
+    <description>Demo Spring Boot applications that access H2 in memory database created
+        in another Spring Boot application
+    </description>
+
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>2.0.4.RELEASE</version>
+        <relativePath/> <!-- lookup parent from repository -->
+    </parent>
+
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
+        <java.version>1.8</java.version>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-jpa</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>com.h2database</groupId>
+            <artifactId>h2</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
+</project>

spring-boot-h2/spring-boot-h2-remote-app/src/main/java/com/baeldung/h2db/demo/ClientSpringBootApp.java

@@ -0,0 +1,49 @@
+package com.baeldung.h2db.demo;
+
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.Arrays;
+import javax.annotation.PostConstruct;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.jdbc.core.JdbcTemplate;
+import org.springframework.jdbc.core.RowMapper;
+
+@SpringBootApplication
+public class ClientSpringBootApp {
+
+    @Autowired
+    private JdbcTemplate jdbcTemplate;
+
+    public static void main(String[] args) {
+        SpringApplication.run(ClientSpringBootApp.class, args);
+    }
+
+    @PostConstruct
+    private void initDb() {
+        System.out.println("****** Inserting more sample data in the table: Employees ******");
+        String sqlStatements[] = {
+            "insert into employees(first_name, last_name) values('Donald','Trump')",
+            "insert into employees(first_name, last_name) values('Barack','Obama')"
+        };
+
+        Arrays.asList(sqlStatements).stream().forEach(sql -> {
+            System.out.println(sql);
+            jdbcTemplate.execute(sql);
+        });
+
+        System.out.println(String.format("****** Fetching from table: %s ******", "Employees"));
+        jdbcTemplate.query("select id,first_name,last_name from employees",
+            new RowMapper<Object>() {
+                @Override
+                public Object mapRow(ResultSet rs, int i) throws SQLException {
+                    System.out.println(String.format("id:%s,first_name:%s,last_name:%s",
+                        rs.getString("id"),
+                        rs.getString("first_name"),
+                        rs.getString("last_name")));
+                    return null;
+                }
+            });
+    }
+}

spring-boot-h2/spring-boot-h2-remote-app/src/main/resources/application.properties

@@ -0,0 +1,5 @@
+spring.datasource.url=jdbc:h2:tcp://localhost:9091/mem:mydb
+spring.datasource.driverClassName=org.h2.Driver
+spring.datasource.username=sa
+spring.datasource.password=
+spring.jpa.hibernate.ddl-auto=create

spring-boot-jasypt/pom.xml

@@ -4,11 +4,10 @@
     <modelVersion>4.0.0</modelVersion>
 
     <groupId>com.example.jasypt</groupId>
-    <artifactId>JasyptDemo</artifactId>
+    <artifactId>spring-boot-jasypt</artifactId>
     <version>0.0.1-SNAPSHOT</version>
     <packaging>jar</packaging>
-
+    <name>spring-boot-jasypt</name>
-    <name>JasyptDemo</name>
     <description>Demo project for Spring Boot</description>
 
     <parent>

spring-cloud/spring-cloud-ribbon-client/pom.xml

@@ -2,7 +2,7 @@
     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>spring-cloud-ribbon</artifactId>
+    <artifactId>spring-cloud-ribbon-client</artifactId>
     <version>0.0.1-SNAPSHOT</version>
     <packaging>jar</packaging>
     <name>spring-cloud-ribbon-client</name>

spring-cloud/spring-cloud-task/springcloudtaskbatch/pom.xml

@@ -2,8 +2,9 @@
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <groupId>org.baeldung.cloud</groupId>
-    <artifactId>springcloudtask</artifactId>
+    <artifactId>springcloudtaskbatch</artifactId>
     <version>0.0.1-SNAPSHOT</version>
+	<name>springcloudtaskbatch</name>
 
     <parent>
         <artifactId>parent-boot-1</artifactId>

spring-ejb/ejb-beans/pom.xml

@@ -2,13 +2,13 @@
     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.singletonsession</groupId>
-    <artifactId>singleton-ejb-bean</artifactId>
+    <artifactId>ejb-beans</artifactId>
     <version>1.0.0-SNAPSHOT</version>
-    <name>EJB Singleton Session Bean</name>
+    <name>EJB Beans</name>
 
     <parent>
         <groupId>com.baeldung.spring.ejb</groupId>
-        <artifactId>ejb-for-spring</artifactId>
+        <artifactId>spring-ejb</artifactId>
         <version>1.0.1</version>
     </parent>
 

spring-ejb/ejb-remote-for-spring/pom.xml

@@ -7,7 +7,7 @@
 
     <parent>
         <groupId>com.baeldung.spring.ejb</groupId>
-        <artifactId>ejb-for-spring</artifactId>
+        <artifactId>spring-ejb</artifactId>
         <version>1.0.1</version>
     </parent>
 

spring-ejb/pom.xml

@@ -3,10 +3,10 @@
     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.spring.ejb</groupId>
-    <artifactId>ejb-for-spring</artifactId>
+    <artifactId>spring-ejb</artifactId>
     <version>1.0.1</version>
     <packaging>pom</packaging>
-    <name>ejb</name>
+    <name>spring-ejb</name>
     <description>Spring EJB Tutorial</description>
 
     <parent>

spring-freemarker/pom.xml

@@ -2,7 +2,7 @@
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.freemarker.example</groupId>
-    <artifactId>spring4-freemarker-example</artifactId>
+    <artifactId>spring-freemarker</artifactId>
     <packaging>war</packaging>
     <version>1.0-SNAPSHOT</version>
     <name>Spring Freemarker Example</name>

spring-reactive-kotlin/pom.xml

@@ -2,10 +2,9 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
-	<artifactId>springreactivekotlin</artifactId>
+	<artifactId>spring-reactive-kotlin</artifactId>
 	<packaging>jar</packaging>
-
+	<name>Spring Reactive Kotlin</name>
-	<name>springreactivekotlin</name>
 	<description>Demo project for Spring Boot</description>
 
 	<parent>

spring-remoting/remoting-http/pom.xml

@@ -5,7 +5,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>spring-remoting</artifactId>
+        <artifactId>remoting-http</artifactId>
         <version>1.0-SNAPSHOT</version>
     </parent>
     <artifactId>spring-remoting-http</artifactId>

spring-rest-embedded-tomcat/pom.xml

@@ -2,7 +2,7 @@
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <groupId>org.baeldung.embedded</groupId>
-    <artifactId>SpringRestTomcat</artifactId>
+    <artifactId>spring-rest-embedded-tomcat</artifactId>
     <version>0.0.1-SNAPSHOT</version>
     <name>spring-rest-embedded-tomcat</name>
     <packaging>war</packaging>

spring-roo/pom.xml

@@ -4,9 +4,9 @@
     <!-- Spring IO Platform is the parent of the generated application to be able to use Spring Boot and all its default configuration -->
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.baeldung</groupId>
-    <artifactId>roo</artifactId>
+    <artifactId>spring-roo</artifactId>
     <version>1.0.0.BUILD-SNAPSHOT</version>
-    <name>roo</name>
+    <name>Spring Roo</name>
     <packaging>jar</packaging>
 
     <parent>

spring-security-x509/spring-security-x509-basic-auth/pom.xml

@@ -3,10 +3,10 @@
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
-    <artifactId>basic-secured-server</artifactId>
+    <artifactId>spring-security-x509-basic-auth</artifactId>
     <version>0.0.1-SNAPSHOT</version>
     <packaging>jar</packaging>
-    <name>basic-secured-server</name>
+    <name>Spring Security x.509 Basic Authentication</name>
     <description>Spring x.509 Authentication Demo</description>
 
     <parent>

spring-security-x509/spring-security-x509-client-auth/pom.xml

@@ -3,10 +3,10 @@
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
-    <artifactId>client-auth-server</artifactId>
+    <artifactId>spring-security-x509-client-auth</artifactId>
     <version>0.0.1-SNAPSHOT</version>
     <packaging>jar</packaging>
-    <name>client-auth-server</name>
+    <name>Spring Security x.509 Client Authentication</name>
     <description>Spring x.509 Client Authentication Demo</description>
 
     <parent>

spring-spel/pom.xml

@@ -3,8 +3,9 @@
     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>spel</artifactId>
+    <artifactId>spring-spel</artifactId>
     <version>1.0-SNAPSHOT</version>
+	<name>Spring SpEL</name>
 
     <parent>
         <groupId>com.baeldung</groupId>

spring-vertx/pom.xml

@@ -4,10 +4,10 @@
     <modelVersion>4.0.0</modelVersion>
 
     <groupId>com.baeldung</groupId>
-    <artifactId>vertx-spring</artifactId>
+    <artifactId>spring-vertx</artifactId>
     <version>0.0.1-SNAPSHOT</version>
     <packaging>jar</packaging>
-    <name>spring-vertx</name>
+    <name>Spring Vertx</name>
     <description>A demo project with vertx spring integration</description>
 
     <parent>

struts-2/pom.xml

@@ -2,10 +2,10 @@
     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>struts</artifactId>
+    <artifactId>struts-2</artifactId>
     <version>0.0.1-SNAPSHOT</version>
     <packaging>pom</packaging>
-    <name>struts</name>
+    <name>Struts 2</name>
 
     <parent>
         <groupId>com.baeldung</groupId>

vaadin/pom.xml

@@ -4,10 +4,10 @@
     <modelVersion>4.0.0</modelVersion>
 
     <groupId>org.test</groupId>
-    <artifactId>vaadin-app</artifactId>
+    <artifactId>vaadin</artifactId>
     <packaging>war</packaging>
     <version>1.0-SNAPSHOT</version>
-    <name>vaadin-app</name>
+    <name>Vaadin</name>
     <prerequisites>
         <maven>3</maven>
     </prerequisites>