Merge remote-tracking branch 'upstream/master'

algorithms/README.md

@@ -23,3 +23,4 @@
 - [Converting Between Roman and Arabic Numerals in Java](http://www.baeldung.com/java-convert-roman-arabic)
 - [Practical Java Examples of the Big O Notation](http://www.baeldung.com/java-algorithm-complexity)
 - [Find the Middle Element of a Linked List](http://www.baeldung.com/java-linked-list-middle-element)
+- [An Introduction to the Theory of Big-O Notation](http://www.baeldung.com/big-o-notation)

apache-avro/README.md

@@ -0,0 +1,2 @@
+### Relevant Articles:
+- [Guide to Apache Avro](http://www.baeldung.com/java-apache-avro)

apache-cxf/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>apache-cxf</artifactId>
@@ -17,6 +17,7 @@
         <module>cxf-spring</module>
         <module>cxf-jaxrs-implementation</module>
         <module>cxf-aegis</module>
+        <module>sse-jaxrs</module>
     </modules>
 
     <build>

apache-cxf/sse-jaxrs/pom.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <artifactId>sse-jaxrs</artifactId>
+    <packaging>pom</packaging>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>apache-cxf</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
+    </parent>
+
+    <modules>
+        <module>sse-jaxrs-server</module>
+        <module>sse-jaxrs-client</module>
+   </modules>
+
+</project>

apache-cxf/sse-jaxrs/sse-jaxrs-client/pom.xml

@@ -0,0 +1,62 @@
+<?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</groupId>
+        <artifactId>sse-jaxrs</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
+    </parent>
+
+    <artifactId>sse-jaxrs-client</artifactId>
+
+    <properties>
+        <cxf-version>3.2.0</cxf-version>
+    </properties>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.codehaus.mojo</groupId>
+                <artifactId>exec-maven-plugin</artifactId>
+                <version>1.6.0</version>
+                <executions>
+                    <execution>
+                        <id>singleEvent</id>
+                        <goals>
+                            <goal>java</goal>
+                        </goals>
+                        <configuration>
+                            <mainClass>com.baeldung.sse.jaxrs.client.SseClientApp</mainClass>
+                        </configuration>
+                    </execution>
+                    <execution>
+                        <id>broadcast</id>
+                        <goals>
+                            <goal>java</goal>
+                        </goals>
+                        <configuration>
+                            <mainClass>com.baeldung.sse.jaxrs.client.SseClientBroadcastApp</mainClass>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.cxf</groupId>
+            <artifactId>cxf-rt-rs-client</artifactId>
+            <version>${cxf-version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.cxf</groupId>
+            <artifactId>cxf-rt-rs-sse</artifactId>
+            <version>${cxf-version}</version>
+        </dependency>
+    </dependencies>
+
+</project>

apache-cxf/sse-jaxrs/sse-jaxrs-client/src/main/java/com/baeldung/sse/jaxrs/client/SseClientApp.java

@@ -0,0 +1,48 @@
+package com.baeldung.sse.jaxrs.client;
+
+import javax.ws.rs.client.Client;
+import javax.ws.rs.client.ClientBuilder;
+import javax.ws.rs.client.WebTarget;
+import javax.ws.rs.sse.InboundSseEvent;
+import javax.ws.rs.sse.SseEventSource;
+import java.util.function.Consumer;
+
+public class SseClientApp {
+
+    private static final String url = "http://127.0.0.1:9080/sse-jaxrs-server/sse/stock/prices";
+
+    public static void main(String... args) throws Exception {
+
+        Client client = ClientBuilder.newClient();
+        WebTarget target = client.target(url);
+        try (SseEventSource eventSource = SseEventSource.target(target).build()) {
+
+            eventSource.register(onEvent, onError, onComplete);
+            eventSource.open();
+
+            //Consuming events for one hour
+            Thread.sleep(60 * 60 * 1000);
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        }
+        client.close();
+        System.out.println("End");
+    }
+
+    // A new event is received
+    private static Consumer<InboundSseEvent> onEvent = (inboundSseEvent) -> {
+        String data = inboundSseEvent.readData();
+        System.out.println(data);
+    };
+
+    //Error
+    private static Consumer<Throwable> onError = (throwable) -> {
+        throwable.printStackTrace();
+    };
+
+    //Connection close and there is nothing to receive
+    private static Runnable onComplete = () -> {
+        System.out.println("Done!");
+    };
+
+}

apache-cxf/sse-jaxrs/sse-jaxrs-client/src/main/java/com/baeldung/sse/jaxrs/client/SseClientBroadcastApp.java

@@ -0,0 +1,52 @@
+package com.baeldung.sse.jaxrs.client;
+
+import javax.ws.rs.client.Client;
+import javax.ws.rs.client.ClientBuilder;
+import javax.ws.rs.client.WebTarget;
+import javax.ws.rs.sse.InboundSseEvent;
+import javax.ws.rs.sse.SseEventSource;
+import java.util.concurrent.TimeUnit;
+import java.util.function.Consumer;
+
+public class SseClientBroadcastApp {
+
+    private static final String subscribeUrl = "http://localhost:9080/sse-jaxrs-server/sse/stock/subscribe";
+
+
+    public static void main(String... args) throws Exception {
+
+        Client client = ClientBuilder.newClient();
+        WebTarget target = client.target(subscribeUrl);
+        try (final SseEventSource eventSource = SseEventSource.target(target)
+                .reconnectingEvery(5, TimeUnit.SECONDS)
+                .build()) {
+            eventSource.register(onEvent, onError, onComplete);
+            eventSource.open();
+            System.out.println("Wainting for incoming event ...");
+
+            //Consuming events for one hour
+            Thread.sleep(60 * 60 * 1000);
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        }
+        client.close();
+        System.out.println("End");
+    }
+
+    // A new event is received
+    private static Consumer<InboundSseEvent> onEvent = (inboundSseEvent) -> {
+        String data = inboundSseEvent.readData();
+        System.out.println(data);
+    };
+
+    //Error
+    private static Consumer<Throwable> onError = (throwable) -> {
+        throwable.printStackTrace();
+    };
+
+    //Connection close and there is nothing to receive
+    private static Runnable onComplete = () -> {
+        System.out.println("Done!");
+    };
+
+}

apache-cxf/sse-jaxrs/sse-jaxrs-server/pom.xml

@@ -0,0 +1,85 @@
+<?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</groupId>
+        <artifactId>sse-jaxrs</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
+    </parent>
+
+    <artifactId>sse-jaxrs-server</artifactId>
+    <packaging>war</packaging>
+
+    <properties>
+        <liberty-maven-plugin.version>2.4.2</liberty-maven-plugin.version>
+        <failOnMissingWebXml>false</failOnMissingWebXml>
+        <openliberty-version>18.0.0.2</openliberty-version>
+    </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>${openliberty-version}</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.ws.rs</groupId>
+            <artifactId>javax.ws.rs-api</artifactId>
+            <version>2.1</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>javax.enterprise</groupId>
+            <artifactId>cdi-api</artifactId>
+            <version>2.0</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>javax.json.bind</groupId>
+            <artifactId>javax.json.bind-api</artifactId>
+            <version>1.0</version>
+            <scope>provided</scope>
+        </dependency>
+
+    </dependencies>
+
+</project>

apache-cxf/sse-jaxrs/sse-jaxrs-server/src/main/java/com/baeldung/sse/jaxrs/AppConfig.java

@@ -0,0 +1,8 @@
+package com.baeldung.sse.jaxrs;
+
+import javax.ws.rs.ApplicationPath;
+import javax.ws.rs.core.Application;
+
+@ApplicationPath("sse")
+public class AppConfig extends Application {
+}

apache-cxf/sse-jaxrs/sse-jaxrs-server/src/main/java/com/baeldung/sse/jaxrs/SseResource.java

@@ -0,0 +1,119 @@
+package com.baeldung.sse.jaxrs;
+
+import javax.enterprise.context.ApplicationScoped;
+import javax.inject.Inject;
+import javax.ws.rs.*;
+import javax.ws.rs.core.Context;
+import javax.ws.rs.core.HttpHeaders;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.sse.OutboundSseEvent;
+import javax.ws.rs.sse.Sse;
+import javax.ws.rs.sse.SseBroadcaster;
+import javax.ws.rs.sse.SseEventSink;
+
+@ApplicationScoped
+@Path("stock")
+public class SseResource {
+
+    @Inject
+    private StockService stockService;
+
+    private Sse sse;
+    private SseBroadcaster sseBroadcaster;
+    private OutboundSseEvent.Builder eventBuilder;
+
+    @Context
+    public void setSse(Sse sse) {
+        this.sse = sse;
+        this.eventBuilder = sse.newEventBuilder();
+        this.sseBroadcaster = sse.newBroadcaster();
+    }
+
+    @GET
+    @Path("prices")
+    @Produces("text/event-stream")
+    public void getStockPrices(@Context SseEventSink sseEventSink,
+                               @HeaderParam(HttpHeaders.LAST_EVENT_ID_HEADER) @DefaultValue("-1") int lastReceivedId) {
+
+        int lastEventId = 1;
+        if (lastReceivedId != -1) {
+            lastEventId = ++lastReceivedId;
+        }
+        boolean running = true;
+        while (running) {
+            Stock stock = stockService.getNextTransaction(lastEventId);
+            if (stock != null) {
+                OutboundSseEvent sseEvent = this.eventBuilder
+                        .name("stock")
+                        .id(String.valueOf(lastEventId))
+                        .mediaType(MediaType.APPLICATION_JSON_TYPE)
+                        .data(Stock.class, stock)
+                        .reconnectDelay(3000)
+                        .comment("price change")
+                        .build();
+                sseEventSink.send(sseEvent);
+                lastEventId++;
+            }
+            //Simulate connection close
+            if (lastEventId % 5 == 0) {
+                sseEventSink.close();
+                break;
+            }
+
+            try {
+                //Wait 5 seconds
+                Thread.sleep(5 * 1000);
+            } catch (InterruptedException ex) {
+                // ...
+            }
+            //Simulatae a while boucle break
+            running = lastEventId <= 2000;
+        }
+        sseEventSink.close();
+    }
+
+    @GET
+    @Path("subscribe")
+    @Produces(MediaType.SERVER_SENT_EVENTS)
+    public void listen(@Context SseEventSink sseEventSink) {
+        sseEventSink.send(sse.newEvent("Welcome !"));
+        this.sseBroadcaster.register(sseEventSink);
+        sseEventSink.send(sse.newEvent("You are registred !"));
+    }
+
+    @GET
+    @Path("publish")
+    public void broadcast() {
+        Runnable r = new Runnable() {
+            @Override
+            public void run() {
+                int lastEventId = 0;
+                boolean running = true;
+                while (running) {
+                    lastEventId++;
+                    Stock stock = stockService.getNextTransaction(lastEventId);
+                    if (stock != null) {
+                        OutboundSseEvent sseEvent = eventBuilder
+                                .name("stock")
+                                .id(String.valueOf(lastEventId))
+                                .mediaType(MediaType.APPLICATION_JSON_TYPE)
+                                .data(Stock.class, stock)
+                                .reconnectDelay(3000)
+                                .comment("price change")
+                                .build();
+                        sseBroadcaster.broadcast(sseEvent);
+                    }
+                    try {
+                        //Wait 5 seconds
+                        Thread.currentThread().sleep(5 * 1000);
+                    } catch (InterruptedException ex) {
+                        // ...
+                    }
+                    //Simulatae a while boucle break
+                    running = lastEventId <= 2000;
+                }
+            }
+        };
+        new Thread(r).start();
+    }
+}

apache-cxf/sse-jaxrs/sse-jaxrs-server/src/main/java/com/baeldung/sse/jaxrs/Stock.java

@@ -0,0 +1,50 @@
+package com.baeldung.sse.jaxrs;
+
+import java.math.BigDecimal;
+import java.time.LocalDateTime;
+
+public class Stock {
+    private Integer id;
+    private String name;
+    private BigDecimal price;
+    LocalDateTime dateTime;
+
+    public Stock(Integer id, String name, BigDecimal price, LocalDateTime dateTime) {
+        this.id = id;
+        this.name = name;
+        this.price = price;
+        this.dateTime = dateTime;
+    }
+
+    public Integer getId() {
+        return id;
+    }
+
+    public void setId(Integer id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public BigDecimal getPrice() {
+        return price;
+    }
+
+    public void setPrice(BigDecimal price) {
+        this.price = price;
+    }
+
+    public LocalDateTime getDateTime() {
+        return dateTime;
+    }
+
+    public void setDateTime(LocalDateTime dateTime) {
+        this.dateTime = dateTime;
+    }
+}

apache-cxf/sse-jaxrs/sse-jaxrs-server/src/main/java/com/baeldung/sse/jaxrs/StockService.java

@@ -0,0 +1,78 @@
+package com.baeldung.sse.jaxrs;
+
+import javax.enterprise.context.ApplicationScoped;
+import javax.enterprise.context.Initialized;
+import javax.enterprise.event.Event;
+import javax.enterprise.event.Observes;
+import javax.inject.Inject;
+import javax.inject.Named;
+import java.math.BigDecimal;
+import java.math.RoundingMode;
+import java.time.LocalDateTime;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Random;
+import java.util.concurrent.atomic.AtomicInteger;
+
+@ApplicationScoped
+@Named
+public class StockService {
+
+    private static final BigDecimal UP = BigDecimal.valueOf(1.05f);
+    private static final BigDecimal DOWN = BigDecimal.valueOf(0.95f);
+
+    List<String> stockNames = Arrays.asList("GOOG", "IBM", "MS", "GOOG", "YAHO");
+    List<Stock> stocksDB = new ArrayList<>();
+    private AtomicInteger counter = new AtomicInteger(0);
+
+    public void init(@Observes @Initialized(ApplicationScoped.class) Object init) {
+        //Open price
+        System.out.println("@Start Init ...");
+        stockNames.forEach(stockName -> {
+            stocksDB.add(new Stock(counter.incrementAndGet(), stockName, generateOpenPrice(), LocalDateTime.now()));
+        });
+
+        Runnable runnable = new Runnable() {
+            @Override
+            public void run() {
+                //Simulate Change price and put every x seconds
+                while (true) {
+                    int indx = new Random().nextInt(stockNames.size());
+                    String stockName = stockNames.get(indx);
+                    BigDecimal price = getLastPrice(stockName);
+                    BigDecimal newprice = changePrice(price);
+                    Stock stock = new Stock(counter.incrementAndGet(), stockName, newprice, LocalDateTime.now());
+                    stocksDB.add(stock);
+
+                    int r = new Random().nextInt(30);
+                    try {
+                        Thread.currentThread().sleep(r*1000);
+                    } catch (InterruptedException ex) {
+                        // ...
+                    }
+                }
+            }
+        };
+        new Thread(runnable).start();
+        System.out.println("@End Init ...");
+    }
+
+    public Stock getNextTransaction(Integer lastEventId) {
+        return stocksDB.stream().filter(s -> s.getId().equals(lastEventId)).findFirst().orElse(null);
+    }
+
+    BigDecimal generateOpenPrice() {
+        float min = 70;
+        float max = 120;
+        return BigDecimal.valueOf(min + new Random().nextFloat() * (max - min)).setScale(4,RoundingMode.CEILING);
+    }
+
+    BigDecimal changePrice(BigDecimal price) {
+        return Math.random() >= 0.5 ? price.multiply(UP).setScale(4,RoundingMode.CEILING) : price.multiply(DOWN).setScale(4,RoundingMode.CEILING);
+    }
+
+    private BigDecimal getLastPrice(String stockName) {
+        return stocksDB.stream().filter(stock -> stock.getName().equals(stockName)).findFirst().get().getPrice();
+    }
+}

apache-cxf/sse-jaxrs/sse-jaxrs-server/src/main/liberty/config/server.xml

@@ -0,0 +1,7 @@
+<server description="OpenLiberty Server">
+    <featureManager>
+        <feature>jaxrs-2.1</feature>
+        <feature>cdi-2.0</feature>
+    </featureManager>
+    <httpEndpoint httpPort="9080" httpsPort="9443" id="defaultHttpEndpoint" host="*"/>
+</server>

apache-cxf/sse-jaxrs/sse-jaxrs-server/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>

apache-cxf/sse-jaxrs/sse-jaxrs-server/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>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>

apache-cxf/sse-jaxrs/sse-jaxrs-server/src/main/webapp/WEB-INF/web.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<web-app 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/web-app_4_0.xsd"
+    version="4.0">
+    <display-name>Hello Servlet</display-name>
+
+    <welcome-file-list>
+        <welcome-file>index.html</welcome-file>
+    </welcome-file-list>
+
+</web-app>

apache-cxf/sse-jaxrs/sse-jaxrs-server/src/main/webapp/index.html

@@ -0,0 +1 @@
+index

apache-cxf/sse-jaxrs/sse-jaxrs-server/src/main/webapp/sse-broadcast.html

@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <title>Server-Sent Event Broadcasting</title>
+</head>
+<body>
+<h2>Stock prices :</h2>
+<div>
+    <ul id="data">
+    </ul>
+</div>
+<script>
+
+    var source = new EventSource('sse/stock/subscribe');
+    source.onopen = function(event) {
+        console.log(event);
+    };
+    source.addEventListener("stock", function(event) {
+        append(event.data);
+    }, false);
+
+    source.onmessage = function(event) {
+        append(event.data);
+    };
+    source.onerror = function(event) {
+        console.log(event);
+    };
+
+    function append(data) {
+        var ul = document.getElementById("data");
+        var li = document.createElement("li");
+        li.appendChild(document.createTextNode(data));
+        ul.insertBefore(li, ul.childNodes[0]);
+    };
+
+</script>
+</body>
+</html>

apache-cxf/sse-jaxrs/sse-jaxrs-server/src/main/webapp/sse.html

@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <title>Server-Sent Event</title>
+</head>
+<body>
+<h2>Stock prices :</h2>
+<div>
+    <ul id="data">
+    </ul>
+</div>
+<script>
+
+    var source = new EventSource('sse/stock/prices');
+    source.onopen = function(event) {
+        console.log(event);
+    };
+    source.addEventListener("stock", function(event) {
+        append(event.data);
+    }, false);
+
+    source.onmessage = function(event) {
+        append(event.data);
+    };
+    source.onerror = function(event) {
+        console.log(event);
+    };
+
+    function append(data) {
+        var ul = document.getElementById("data");
+        var li = document.createElement("li");
+        li.appendChild(document.createTextNode(data));
+        ul.insertBefore(li, ul.childNodes[0]);
+    };
+
+</script>
+</body>
+</html>

apache-shiro/pom.xml

@@ -8,9 +8,10 @@
     <version>1.0-SNAPSHOT</version>
 
     <parent>
-        <groupId>org.springframework.boot</groupId>
-        <artifactId>spring-boot-starter-parent</artifactId>
-        <version>1.5.2.RELEASE</version>
+        <artifactId>parent-boot-1</artifactId>
+        <groupId>com.baeldung</groupId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../parent-boot-1</relativePath>
     </parent>
 
     <dependencies>

cas/cas-secured-app/pom.xml

@@ -10,10 +10,10 @@
     <description>Demo project for Spring Boot</description>
 
     <parent>
-        <groupId>org.springframework.boot</groupId>
-        <artifactId>spring-boot-starter-parent</artifactId>
-        <version>1.5.13.RELEASE</version>
-        <relativePath /> <!-- lookup parent from repository -->
+        <artifactId>parent-boot-1</artifactId>
+        <groupId>com.baeldung</groupId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../../parent-boot-1</relativePath>
     </parent>
 
     <dependencies>

core-java-10/README.md

@@ -3,3 +3,4 @@
 
 - [Java 10 LocalVariable Type-Inference](http://www.baeldung.com/java-10-local-variable-type-inference)
 - [Guide to Java 10](http://www.baeldung.com/java-10-overview)
+- [Copy a List to Another List in Java](http://www.baeldung.com/java-copy-list-to-another)

core-java-8/README.md

@@ -56,4 +56,7 @@
 - [Generalized Target-Type Inference in Java](http://www.baeldung.com/java-generalized-target-type-inference)
 - [Image to Base64 String Conversion](http://www.baeldung.com/java-base64-image-string)
 - [Calculate Age in Java](http://www.baeldung.com/java-get-age)
+- [Copy a List to Another List in Java](http://www.baeldung.com/java-copy-list-to-another)
+- [Increment Date in Java](http://www.baeldung.com/java-increment-date)
 - [Add Hours To a Date In Java](http://www.baeldung.com/java-add-hours-date)
+- [Overriding System Time for Testing in Java](http://www.baeldung.com/java-override-system-time)

core-java-8/src/test/java/com/baeldung/datetime/UseTimeZoneUnitTest.java

@@ -0,0 +1,72 @@
+package com.baeldung.datetime;
+
+import java.text.SimpleDateFormat;
+import java.time.Instant;
+import java.time.ZoneId;
+import java.time.ZonedDateTime;
+import java.time.format.DateTimeFormatter;
+import java.util.Calendar;
+import java.util.Date;
+import java.util.TimeZone;
+
+import org.joda.time.DateTime;
+import org.joda.time.DateTimeZone;
+import org.junit.Assert;
+import org.junit.Test;
+
+public class UseTimeZoneUnitTest {
+
+    /* https://en.wikipedia.org/wiki/List_of_tz_database_time_zones */
+
+    String timeZone = "Asia/Singapore";
+
+    private static final String PATTERN = "E yyyy-MM-dd HH:mm:ss a";
+
+    @Test
+    public void givenDateWithoutTimeZone_WhenSetTimeZoneUsingJava7_ThenTimeZoneIsSetSuccessfully() {
+        Date nowUtc = new Date();
+        TimeZone asiaSingapore = TimeZone.getTimeZone(timeZone);
+
+        Calendar nowAsiaSingapore = Calendar.getInstance(asiaSingapore);
+        nowAsiaSingapore.setTime(nowUtc);
+
+        SimpleDateFormat simpleDateFormat = new SimpleDateFormat(PATTERN);
+        simpleDateFormat.setTimeZone(TimeZone.getTimeZone(timeZone));
+
+        System.out.println(String.format("Java7: Time now in '%s' is '%s'", nowAsiaSingapore.getTimeZone()
+            .getID(), simpleDateFormat.format(nowAsiaSingapore.getTime())));
+        
+        Assert.assertEquals(nowUtc.toInstant().getEpochSecond(), nowAsiaSingapore.toInstant().getEpochSecond());
+        Assert.assertEquals(asiaSingapore, nowAsiaSingapore.getTimeZone());
+
+    }
+
+    @Test
+    public void givenDateWithoutTimeZone_WhenSetTimeZoneUsingJava8_ThenTimeZoneIsSetSuccessfully() {
+        Instant nowUtc = Instant.now();
+        ZoneId asiaSingapore = ZoneId.of(timeZone);
+
+        ZonedDateTime nowAsiaSingapore = ZonedDateTime.ofInstant(nowUtc, asiaSingapore);
+
+        System.out.println(String.format("Java8: Time now in '%s' is '%s'", nowAsiaSingapore.getZone(), 
+            nowAsiaSingapore.format(DateTimeFormatter.ofPattern(PATTERN))));
+
+        Assert.assertEquals(nowUtc.getEpochSecond(), nowAsiaSingapore.toEpochSecond());
+        Assert.assertEquals(asiaSingapore, nowAsiaSingapore.getZone());
+    }
+
+    @Test
+    public void givenDateWithoutTimeZone_WhenSetTimeZoneUsingJodaTime_ThenTimeZoneIsSetSuccessfully() {
+        org.joda.time.Instant nowUtc = org.joda.time.Instant.now();
+        DateTimeZone asiaSingapore = DateTimeZone.forID(timeZone);
+
+        DateTime nowAsiaSingapore = nowUtc.toDateTime(asiaSingapore);
+
+        System.out.println(String.format("Joda-time: Time now in '%s' is '%s'", nowAsiaSingapore.getZone(), 
+            nowAsiaSingapore.toString(PATTERN)));
+        
+        Assert.assertEquals(nowUtc.toInstant().getMillis(), nowAsiaSingapore.toInstant().getMillis());
+        Assert.assertEquals(asiaSingapore, nowAsiaSingapore.getZone());
+    }
+
+}

core-java-collections/README.md

@@ -31,3 +31,8 @@
 - [How to Store Duplicate Keys in a Map in Java?](http://www.baeldung.com/java-map-duplicate-keys)
 - [Getting the Size of an Iterable in Java](http://www.baeldung.com/java-iterable-size)
 - [Iterating Backward Through a List](http://www.baeldung.com/java-list-iterate-backwards)
+- [How to Filter a Collection in Java](http://www.baeldung.com/java-collection-filtering)
+- [Add Multiple Items to an Java ArrayList](http://www.baeldung.com/java-add-items-array-list)
+- [Remove the First Element from a List](http://www.baeldung.com/java-remove-first-element-from-list)
+- [How to Convert List to Map in Java](http://www.baeldung.com/java-list-to-map)
+- [Initializing HashSet at the Time of Construction](http://www.baeldung.com/java-initialize-hashset)

core-java-collections/src/main/java/com/baeldung/nullsafecollectionstreams/NullSafeCollectionStreamsUsingCommonsEmptyIfNull.java

@@ -0,0 +1,19 @@
+package com.baeldung.nullsafecollectionstreams;
+
+import java.util.Collection;
+import java.util.stream.Stream;
+import static org.apache.commons.collections4.CollectionUtils.emptyIfNull;
+
+public class NullSafeCollectionStreamsUsingCommonsEmptyIfNull {
+
+    /**
+     * This method shows how to make a null safe stream from a collection through the use of
+     * emptyIfNull() method from Apache Commons CollectionUtils library
+     *
+     * @param collection The collection that is to be converted into a stream
+     * @return The stream that has been created from the collection or an empty stream if the collection is null
+     */
+    public Stream<String> collectionAsStream(Collection<String> collection) {
+        return emptyIfNull(collection).stream();
+    }
+}

core-java-collections/src/main/java/com/baeldung/nullsafecollectionstreams/NullSafeCollectionStreamsUsingJava8OptionalContainer.java

@@ -0,0 +1,21 @@
+package com.baeldung.nullsafecollectionstreams;
+
+import java.util.Collection;
+import java.util.Optional;
+import java.util.stream.Stream;
+
+public class NullSafeCollectionStreamsUsingJava8OptionalContainer {
+
+    /**
+     * This method shows how to make a null safe stream from a collection  through the use of
+     * Java SE 8’s Optional Container
+     *
+     * @param collection The collection that is to be converted into a stream
+     * @return The stream that has been created from the collection or an empty stream if the collection is null
+     */
+    public Stream<String> collectionAsStream(Collection<String> collection) {
+        return Optional.ofNullable(collection)
+                .map(Collection::stream)
+                .orElseGet(Stream::empty);
+    }
+}

core-java-collections/src/main/java/com/baeldung/nullsafecollectionstreams/NullSafeCollectionStreamsUsingNullDereferenceCheck.java

@@ -0,0 +1,19 @@
+package com.baeldung.nullsafecollectionstreams;
+
+import java.util.Collection;
+import java.util.stream.Stream;
+
+public class NullSafeCollectionStreamsUsingNullDereferenceCheck {
+
+    /**
+     * This method shows how to make a null safe stream from a collection through the use of a check
+     * to prevent null dereferences
+     *
+     * @param collection The collection that is to be converted into a stream
+     * @return The stream that has been created from the collection or an empty stream if the collection is null
+     */
+    public Stream<String> collectionAsStream(Collection<String> collection) {
+        return collection == null ? Stream.empty() : collection.stream();
+    }
+
+}

core-java-collections/src/test/java/com/baeldung/collection/CollectionsEmpty.java

@@ -0,0 +1,26 @@
+package com.baeldung.collection;
+
+import java.util.List;
+import java.util.ArrayList;
+import java.util.Collections;
+import org.junit.Assert;
+import org.junit.Test;
+
+public class CollectionsEmpty {
+
+    @Test
+    public void givenArrayList_whenAddingElement_addsNewElement() {
+        ArrayList<String> mutableList = new ArrayList<>();
+        mutableList.add("test");
+
+        Assert.assertEquals(mutableList.size(), 1);
+        Assert.assertEquals(mutableList.get(0), "test");
+    }
+
+    @Test(expected = UnsupportedOperationException.class)
+    public void givenCollectionsEmptyList_whenAddingElement_throwsUnsupportedOperationException() {
+        List<String> immutableList = Collections.emptyList();
+        immutableList.add("test");
+    }
+
+}

core-java-collections/src/test/java/com/baeldung/nullsafecollectionstreams/NullSafeCollectionStreamsUsingCommonsEmptyIfNullUnitTest.java

@@ -0,0 +1,37 @@
+package com.baeldung.nullsafecollectionstreams;
+
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Iterator;
+import java.util.stream.Stream;
+import org.junit.Test;
+import static org.junit.Assert.*;
+
+public class NullSafeCollectionStreamsUsingCommonsEmptyIfNullUnitTest {
+
+    private final NullSafeCollectionStreamsUsingCommonsEmptyIfNull instance =
+            new NullSafeCollectionStreamsUsingCommonsEmptyIfNull();
+    @Test
+    public void whenCollectionIsNull_thenExpectAnEmptyStream() {
+        Collection<String> collection = null;
+        Stream<String> expResult = Stream.empty();
+        Stream<String> result = instance.collectionAsStream(collection);
+        assertStreamEquals(expResult, result);
+    }
+
+    @Test
+    public void whenCollectionHasElements_thenExpectAStreamOfExactlyTheSameElements() {
+        Collection<String> collection = Arrays.asList("a", "b", "c");
+        Stream<String> expResult = Arrays.stream(new String[] { "a", "b", "c" });
+        Stream<String> result = instance.collectionAsStream(collection);
+        assertStreamEquals(expResult, result);
+    }
+
+    private static void assertStreamEquals(Stream<?> s1, Stream<?> s2) {
+        Iterator<?> iter1 = s1.iterator(), iter2 = s2.iterator();
+        while (iter1.hasNext() && iter2.hasNext())
+            assertEquals(iter1.next(), iter2.next());
+        assert !iter1.hasNext() && !iter2.hasNext();
+    }
+
+}

core-java-collections/src/test/java/com/baeldung/nullsafecollectionstreams/NullSafeCollectionStreamsUsingJava8OptionalContainerUnitTest.java

@@ -0,0 +1,37 @@
+package com.baeldung.nullsafecollectionstreams;
+
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Iterator;
+import java.util.stream.Stream;
+import org.junit.Test;
+import static org.junit.Assert.*;
+
+public class NullSafeCollectionStreamsUsingJava8OptionalContainerUnitTest {
+
+    private final NullSafeCollectionStreamsUsingJava8OptionalContainer instance =
+            new NullSafeCollectionStreamsUsingJava8OptionalContainer();
+    @Test
+    public void whenCollectionIsNull_thenExpectAnEmptyStream() {
+        Collection<String> collection = null;
+        Stream<String> expResult = Stream.empty();
+        Stream<String> result = instance.collectionAsStream(collection);
+        assertStreamEquals(expResult, result);
+    }
+
+    @Test
+    public void whenCollectionHasElements_thenExpectAStreamOfExactlyTheSameElements() {
+        Collection<String> collection = Arrays.asList("a", "b", "c");
+        Stream<String> expResult = Arrays.stream(new String[] { "a", "b", "c" });
+        Stream<String> result = instance.collectionAsStream(collection);
+        assertStreamEquals(expResult, result);
+    }
+
+    private static void assertStreamEquals(Stream<?> s1, Stream<?> s2) {
+        Iterator<?> iter1 = s1.iterator(), iter2 = s2.iterator();
+        while (iter1.hasNext() && iter2.hasNext())
+            assertEquals(iter1.next(), iter2.next());
+        assert !iter1.hasNext() && !iter2.hasNext();
+    }
+
+}

core-java-collections/src/test/java/com/baeldung/nullsafecollectionstreams/NullSafeCollectionStreamsUsingNullDereferenceCheckUnitTest.java

@@ -0,0 +1,38 @@
+package com.baeldung.nullsafecollectionstreams;
+
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Iterator;
+import java.util.stream.Stream;
+import org.junit.Test;
+import static org.junit.Assert.*;
+
+public class NullSafeCollectionStreamsUsingNullDereferenceCheckUnitTest {
+
+    private final NullSafeCollectionStreamsUsingNullDereferenceCheck instance =
+            new NullSafeCollectionStreamsUsingNullDereferenceCheck();
+
+    @Test
+    public void whenCollectionIsNull_thenExpectAnEmptyStream() {
+        Collection<String> collection = null;
+        Stream<String> expResult = Stream.empty();
+        Stream<String> result = instance.collectionAsStream(collection);
+        assertStreamEquals(expResult, result);
+    }
+
+    @Test
+    public void whenCollectionHasElements_thenExpectAStreamOfExactlyTheSameElements() {
+        Collection<String> collection = Arrays.asList("a", "b", "c");
+        Stream<String> expResult = Arrays.stream(new String[] { "a", "b", "c" });
+        Stream<String> result = instance.collectionAsStream(collection);
+        assertStreamEquals(expResult, result);
+    }
+
+    private static void assertStreamEquals(Stream<?> s1, Stream<?> s2) {
+        Iterator<?> iter1 = s1.iterator(), iter2 = s2.iterator();
+        while (iter1.hasNext() && iter2.hasNext())
+            assertEquals(iter1.next(), iter2.next());
+        assert !iter1.hasNext() && !iter2.hasNext();
+    }
+
+}

core-java-concurrency/README.md

@@ -38,3 +38,4 @@
 - [Priority-based Job Scheduling in Java](http://www.baeldung.com/java-priority-job-schedule)
 - [A Custom Spring SecurityConfigurer](http://www.baeldung.com/spring-security-custom-configurer)
 - [Life Cycle of a Thread in Java](http://www.baeldung.com/java-thread-lifecycle)
+- [Runnable vs. Callable in Java](http://www.baeldung.com/java-runnable-callable)

core-java-sun/pom.xml

@@ -303,7 +303,7 @@
         <avaitility.version>1.7.0</avaitility.version>
 
         <!-- maven plugins -->
-        <maven-surefire-plugin.version>2.19.1</maven-surefire-plugin.version>
+        <maven-surefire-plugin.version>2.21.0</maven-surefire-plugin.version>
         <sun-tools.version>1.8.0</sun-tools.version>
         <maven-jar-plugin.version>3.0.2</maven-jar-plugin.version>
     </properties>

core-java/README.md

@@ -168,3 +168,6 @@
 - [Encrypting and Decrypting Files in Java](http://www.baeldung.com/java-cipher-input-output-stream)
 - [How to Get the Size of an Object in Java](http://www.baeldung.com/java-size-of-object)
 - [Exception Handling in Java](http://www.baeldung.com/java-exceptions)
+- [Guide to Java Instrumentation](http://www.baeldung.com/java-instrumentation)
+- [Getting a File’s Mime Type in Java](http://www.baeldung.com/java-file-mime-type)
+- [Common Java Exceptions](http://www.baeldung.com/java-common-exceptions)

core-java/pom.xml

@@ -530,7 +530,7 @@
         <assertj-core.version>3.10.0</assertj-core.version>
 
         <!-- maven plugins -->
-        <maven-surefire-plugin.version>2.19.1</maven-surefire-plugin.version>
+        <maven-surefire-plugin.version>2.21.0</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>
         

core-java/src/main/java/com/baeldung/fileparser/BufferedReaderExample.java

@@ -0,0 +1,24 @@
+package com.baeldung.fileparser;
+
+import java.io.BufferedReader;
+import java.io.FileReader;
+import java.io.IOException;
+import java.util.ArrayList;
+
+public class BufferedReaderExample {
+
+    protected static ArrayList<String> generateArrayListFromFile(String filename) throws IOException {
+
+        ArrayList<String> result = new ArrayList<>();
+
+        try (BufferedReader br = new BufferedReader(new FileReader(filename))) {
+
+            while (br.ready()) {
+                result.add(br.readLine());
+            }
+            return result;
+        }
+
+    }
+
+}

core-java/src/main/java/com/baeldung/fileparser/FileReaderExample.java

@@ -0,0 +1,31 @@
+package com.baeldung.fileparser;
+
+import java.io.FileReader;
+import java.io.IOException;
+import java.util.ArrayList;
+
+public class FileReaderExample {
+
+    protected static ArrayList<String> generateArrayListFromFile(String filename) throws IOException {
+
+        ArrayList<String> result = new ArrayList<>();
+
+        try (FileReader f = new FileReader(filename)) {
+            StringBuffer sb = new StringBuffer();
+            while (f.ready()) {
+                char c = (char) f.read();
+                if (c == '\n') {
+                    result.add(sb.toString());
+                    sb = new StringBuffer();
+                } else {
+                    sb.append(c);
+                }
+            }
+            if (sb.length() > 0) {
+                result.add(sb.toString());
+            }
+        }
+        
+        return result;
+    }
+}

core-java/src/main/java/com/baeldung/fileparser/FilesReadLinesExample.java

@@ -0,0 +1,18 @@
+package com.baeldung.fileparser;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.util.ArrayList;
+import java.util.List;
+
+public class FilesReadLinesExample {
+
+    protected static ArrayList<String> generateArrayListFromFile(String filename) throws IOException {
+        
+        List<String> result = Files.readAllLines(Paths.get(filename));
+        
+        return (ArrayList<String>) result;
+    }
+
+}

core-java/src/main/java/com/baeldung/fileparser/ScannerIntExample.java

@@ -0,0 +1,24 @@
+package com.baeldung.fileparser;
+
+import java.io.FileReader;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Scanner;
+
+public class ScannerIntExample {
+
+    protected static ArrayList<Integer> generateArrayListFromFile(String filename) throws IOException {
+        
+        ArrayList<Integer> result = new ArrayList<>();
+
+        try (Scanner s = new Scanner(new FileReader(filename))) {
+
+            while (s.hasNext()) {
+                result.add(s.nextInt());
+            }
+            return result;
+        }
+
+    }
+
+}

core-java/src/main/java/com/baeldung/fileparser/ScannerStringExample.java

@@ -0,0 +1,24 @@
+package com.baeldung.fileparser;
+
+import java.io.FileReader;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Scanner;
+
+public class ScannerStringExample {
+
+    protected static ArrayList<String> generateArrayListFromFile(String filename) throws IOException {
+        
+        ArrayList<String> result = new ArrayList<>();
+
+        try (Scanner s = new Scanner(new FileReader(filename))) {
+
+            while (s.hasNext()) {
+                result.add(s.nextLine());
+            }
+            return result;
+        }
+
+    }
+
+}

core-java/src/test/java/com/baeldung/fileparser/BufferedReaderUnitTest.java

@@ -0,0 +1,19 @@
+package com.baeldung.fileparser;
+
+import static org.junit.Assert.assertTrue;
+
+import java.io.IOException;
+import java.util.List;
+
+import org.junit.Test;
+
+public class BufferedReaderUnitTest {
+
+    protected static final String TEXT_FILENAME = "src/test/resources/sampleTextFile.txt";
+    
+    @Test
+    public void whenParsingExistingTextFile_thenGetArrayList() throws IOException {
+        List<String> lines = BufferedReaderExample.generateArrayListFromFile(TEXT_FILENAME);
+        assertTrue("File does not has 2 lines", lines.size() == 2);
+    }
+}

core-java/src/test/java/com/baeldung/fileparser/FileReaderUnitTest.java

@@ -0,0 +1,19 @@
+package com.baeldung.fileparser;
+
+import static org.junit.Assert.assertTrue;
+
+import java.io.IOException;
+import java.util.List;
+
+import org.junit.Test;
+
+public class FileReaderUnitTest {
+
+    protected static final String TEXT_FILENAME = "src/test/resources/sampleTextFile.txt";
+    
+    @Test
+    public void whenParsingExistingTextFile_thenGetArrayList() throws IOException {
+        List<String> lines = FileReaderExample.generateArrayListFromFile(TEXT_FILENAME);
+        assertTrue("File does not has 2 lines", lines.size() == 2);
+    }
+}

core-java/src/test/java/com/baeldung/fileparser/FilesReadAllLinesUnitTest.java

@@ -0,0 +1,19 @@
+package com.baeldung.fileparser;
+
+import static org.junit.Assert.assertTrue;
+
+import java.io.IOException;
+import java.util.List;
+
+import org.junit.Test;
+
+public class FilesReadAllLinesUnitTest {
+
+    protected static final String TEXT_FILENAME = "src/test/resources/sampleTextFile.txt";
+
+    @Test
+    public void whenParsingExistingTextFile_thenGetArrayList() throws IOException {
+        List<String> lines = FilesReadLinesExample.generateArrayListFromFile(TEXT_FILENAME);
+        assertTrue("File does not has 2 lines", lines.size() == 2);
+    }
+}

core-java/src/test/java/com/baeldung/fileparser/ScannerIntUnitTest.java

@@ -0,0 +1,19 @@
+package com.baeldung.fileparser;
+
+import static org.junit.Assert.assertTrue;
+
+import java.io.IOException;
+import java.util.List;
+
+import org.junit.Test;
+
+public class ScannerIntUnitTest {
+
+    protected static final String NUMBER_FILENAME = "src/test/resources/sampleNumberFile.txt";
+    
+    @Test
+    public void whenParsingExistingTextFile_thenGetIntArrayList() throws IOException {
+        List<Integer> numbers = ScannerIntExample.generateArrayListFromFile(NUMBER_FILENAME);
+        assertTrue("File does not has 2 lines", numbers.size() == 2);
+    }
+}

core-java/src/test/java/com/baeldung/fileparser/ScannerStringUnitTest.java

@@ -0,0 +1,19 @@
+package com.baeldung.fileparser;
+
+import static org.junit.Assert.assertTrue;
+
+import java.io.IOException;
+import java.util.List;
+
+import org.junit.Test;
+
+public class ScannerStringUnitTest {
+
+    protected static final String TEXT_FILENAME = "src/test/resources/sampleTextFile.txt";
+    
+    @Test
+    public void whenParsingExistingTextFile_thenGetArrayList() throws IOException {
+        List<String> lines = ScannerStringExample.generateArrayListFromFile(TEXT_FILENAME);
+        assertTrue("File does not has 2 lines", lines.size() == 2);
+    }
+}

core-java/src/test/resources/sampleNumberFile.txt

@@ -0,0 +1,2 @@
+111
+222

core-java/src/test/resources/sampleTextFile.txt

@@ -0,0 +1,2 @@
+Hello 
+World

core-kotlin/README.md

@@ -37,3 +37,4 @@
 - [Create a Java and Kotlin Project with Maven](http://www.baeldung.com/kotlin-maven-java-project)
 - [Reflection with Kotlin](http://www.baeldung.com/kotlin-reflection)
 - [Get a Random Number in Kotlin](http://www.baeldung.com/kotlin-random-number)
+- [Idiomatic Logging in Kotlin](http://www.baeldung.com/kotlin-logging)

core-kotlin/src/main/java/com/baeldung/constructor/Car.kt

@@ -0,0 +1,17 @@
+package com.baeldung.constructor
+
+class Car {
+    val id: String
+    val type: String
+
+    constructor(id: String, type: String) {
+        this.id = id
+        this.type = type
+    }
+
+}
+
+fun main(args: Array<String>) {
+    val car = Car("1", "sport")
+    val s= Car("2", "suv")
+}

core-kotlin/src/main/java/com/baeldung/constructor/Employee.kt

@@ -0,0 +1,3 @@
+package com.baeldung.constructor
+
+class Employee(name: String, val salary: Int): Person(name)

core-kotlin/src/main/java/com/baeldung/constructor/Person.java

@@ -0,0 +1,19 @@
+package com.baeldung.constructor;
+
+class PersonJava {
+    final String name;
+    final String surname;
+    final Integer age;
+
+    public PersonJava(String name, String surname) {
+        this.name = name;
+        this.surname = surname;
+        this.age = null;
+    }
+
+    public PersonJava(String name, String surname, Integer age) {
+        this.name = name;
+        this.surname = surname;
+        this.age = age;
+    }
+}

core-kotlin/src/main/kotlin/com/baeldung/constructor/Person.kt

@@ -0,0 +1,26 @@
+package com.baeldung.constructor
+
+open class Person(
+        val name: String,
+        val age: Int? = null
+) {
+    val upperCaseName: String = name.toUpperCase()
+
+    init {
+        println("Hello, I'm $name")
+
+        if (age != null && age < 0) {
+            throw IllegalArgumentException("Age cannot be less than zero!")
+        }
+    }
+
+    init {
+        println("upperCaseName is $upperCaseName")
+    }
+
+}
+
+fun main(args: Array<String>) {
+    val person = Person("John")
+    val personWithAge = Person("John", 22)
+}

core-kotlin/src/test/resources/Kotlin.out

@@ -0,0 +1,2 @@
+Kotlin
+Concise, Safe, Interoperable, Tool-friendly

ejb/README.md

@@ -3,3 +3,4 @@
 - [Guide to EJB Set-up](http://www.baeldung.com/ejb-intro)
 - [Java EE Session Beans](http://www.baeldung.com/ejb-session-beans)
 - [Introduction to EJB JNDI Lookup on WildFly Application Server](http://www.baeldung.com/wildfly-ejb-jndi)
+- [A Guide to Message Driven Beans in EJB](http://www.baeldung.com/ejb-message-driven-beans)

google-web-toolkit/README.md

@@ -1,2 +1,3 @@
 ### Relevant Articles: 
 - [Introduction to GWT](http://www.baeldung.com/gwt)
+- [Quick Use of FilenameFilter](http://www.baeldung.com/java-filename-filter)

hazelcast/pom.xml

@@ -13,16 +13,12 @@
     </parent>
 
     <dependencies>
-        <dependency>
-            <groupId>com.hazelcast</groupId>
-            <artifactId>hazelcast</artifactId>
-            <version>${hazelcast.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>com.hazelcast</groupId>
-            <artifactId>hazelcast-client</artifactId>
-            <version>${hazelcast.version}</version>
-        </dependency>
+        <!-- Hazelcast Jet -->
+		<dependency>
+          <groupId>com.hazelcast.jet</groupId>
+          <artifactId>hazelcast-jet</artifactId>
+          <version>${hazelcast.jet.version}</version>
+		</dependency>
     </dependencies>
 
     <build>
@@ -36,8 +32,8 @@
     </build>
 
     <properties>
-        <!-- hazelcast -->
-        <hazelcast.version>3.8.4</hazelcast.version>
+        <!-- hazelcast jet-->
+        <hazelcast.jet.version>0.6</hazelcast.jet.version>
     </properties>
 
 </project>

hazelcast/src/main/java/com/baeldung/hazelcast/jet/WordCounter.java

@@ -0,0 +1,51 @@
+package com.baeldung.hazelcast.jet;
+
+import java.util.List;
+import java.util.Map;
+
+import static com.hazelcast.jet.Traversers.traverseArray;
+import static com.hazelcast.jet.aggregate.AggregateOperations.counting;
+import static com.hazelcast.jet.function.DistributedFunctions.wholeItem;
+
+import com.hazelcast.jet.Jet;
+import com.hazelcast.jet.JetInstance;
+import com.hazelcast.jet.pipeline.Pipeline;
+import com.hazelcast.jet.pipeline.Sinks;
+import com.hazelcast.jet.pipeline.Sources;
+
+public class WordCounter {
+
+    private static final String LIST_NAME = "textList";
+
+    private static final String MAP_NAME = "countMap";
+
+    private Pipeline createPipeLine() {
+        Pipeline p = Pipeline.create();
+        p.drawFrom(Sources.<String> list(LIST_NAME))
+            .flatMap(word -> traverseArray(word.toLowerCase()
+                .split("\\W+")))
+            .filter(word -> !word.isEmpty())
+            .groupingKey(wholeItem())
+            .aggregate(counting())
+            .drainTo(Sinks.map(MAP_NAME));
+        return p;
+    }
+
+    public Long countWord(List<String> sentences, String word) {
+        long count = 0;
+        JetInstance jet = Jet.newJetInstance();
+        try {
+            List<String> textList = jet.getList(LIST_NAME);
+            textList.addAll(sentences);
+            Pipeline p = createPipeLine();
+            jet.newJob(p)
+                .join();
+            Map<String, Long> counts = jet.getMap(MAP_NAME);
+            count = counts.get(word);
+        } finally {
+            Jet.shutdownAll();
+        }
+        return count;
+    }
+
+}

hazelcast/src/test/java/com/baeldung/hazelcast/jet/WordCounterUnitTest.java

@@ -0,0 +1,21 @@
+package com.baeldung.hazelcast.jet;
+
+import static org.junit.Assert.assertTrue;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.junit.Test;
+
+public class WordCounterUnitTest {
+
+    @Test
+    public void whenGivenSentencesAndWord_ThenReturnCountOfWord() {
+        List<String> sentences = new ArrayList<>();
+        sentences.add("The first second was alright, but the second second was tough.");
+        WordCounter wordCounter = new WordCounter();
+        long countSecond = wordCounter.countWord(sentences, "second");
+        assertTrue(countSecond == 3);
+    }
+
+}

java-numbers/pom.xml

@@ -156,7 +156,7 @@
         <jmh-core.version>1.19</jmh-core.version>
         <jmh-generator-annprocess.version>1.19</jmh-generator-annprocess.version>
 
-        <maven-surefire-plugin.version>2.19.1</maven-surefire-plugin.version>
+        <maven-surefire-plugin.version>2.21.0</maven-surefire-plugin.version>
         <maven-javadoc-plugin.version>3.0.0-M1</maven-javadoc-plugin.version>
         <maven-jar-plugin.version>3.0.2</maven-jar-plugin.version>
     </properties>

jee-7/pom.xml

@@ -418,7 +418,7 @@
         <arquillian-glassfish.version>1.0.0.Final</arquillian-glassfish.version>
         <maven-war-plugin.version>2.6</maven-war-plugin.version>
         <org.springframework.security.version>4.2.3.RELEASE</org.springframework.security.version>
-        <maven-surefire-plugin.version>2.17</maven-surefire-plugin.version>
+        <maven-surefire-plugin.version>2.21.0</maven-surefire-plugin.version>
         <taglibs.standard.version>1.1.2</taglibs.standard.version>
         <commons-io.version>2.4</commons-io.version>
         <com.sun.faces.jsf.version>2.2.14</com.sun.faces.jsf.version>

jersey/pom.xml

@@ -29,6 +29,28 @@
             <artifactId>jaxrs-ri</artifactId>
             <version>${jersey.version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.glassfish.jersey.containers</groupId>
+            <artifactId>jersey-container-grizzly2-servlet</artifactId>
+             <version>${jersey.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.glassfish.jersey.ext</groupId>
+            <artifactId>jersey-mvc-freemarker</artifactId>
+            <version>${jersey.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.glassfish.jersey.test-framework</groupId>
+            <artifactId>jersey-test-framework-core</artifactId>
+            <version>${jersey.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.glassfish.jersey.test-framework.providers</groupId>
+            <artifactId>jersey-test-framework-provider-grizzly2</artifactId>
+            <version>${jersey.version}</version>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
     <build>
@@ -41,6 +63,13 @@
                     <failOnMissingWebXml>false</failOnMissingWebXml>
                 </configuration>
             </plugin>
+            <plugin>
+                <groupId>org.codehaus.mojo</groupId>
+                <artifactId>exec-maven-plugin</artifactId>
+                <configuration>
+                    <mainClass>com.baeldung.jersey.server.http.EmbeddedHttpServer</mainClass>
+                </configuration>
+            </plugin>
         </plugins>
     </build>
 

jersey/src/main/java/com/baeldung/jersey/server/config/ViewApplicationConfig.java

@@ -0,0 +1,14 @@
+package com.baeldung.jersey.server.config;
+
+import org.glassfish.jersey.server.ResourceConfig;
+import org.glassfish.jersey.server.mvc.freemarker.FreemarkerMvcFeature;
+
+public class ViewApplicationConfig extends ResourceConfig {
+    
+    public ViewApplicationConfig() {
+        packages("com.baeldung.jersey.server");
+        property(FreemarkerMvcFeature.TEMPLATE_BASE_PATH, "templates/freemarker");
+        register(FreemarkerMvcFeature.class);;
+    }
+
+}

jersey/src/main/java/com/baeldung/jersey/server/http/EmbeddedHttpServer.java

@@ -0,0 +1,35 @@
+package com.baeldung.jersey.server.http;
+
+import java.io.IOException;
+import java.net.URI;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import org.glassfish.grizzly.http.server.HttpServer;
+import org.glassfish.jersey.grizzly2.httpserver.GrizzlyHttpServerFactory;
+
+import com.baeldung.jersey.server.config.ViewApplicationConfig;
+
+public class EmbeddedHttpServer {
+
+    private static final URI BASE_URI = URI.create("http://localhost:8082/");
+
+    public static void main(String[] args) {
+        try {
+            final HttpServer server = GrizzlyHttpServerFactory.createHttpServer(BASE_URI, new ViewApplicationConfig(), false);
+
+            Runtime.getRuntime()
+                .addShutdownHook(new Thread(() -> {
+                    server.shutdownNow();
+                }));
+
+            server.start();
+
+            System.out.println(String.format("Application started.\nTry out %s\nStop the application using CTRL+C", BASE_URI + "fruit"));
+        } catch (IOException ex) {
+            Logger.getLogger(EmbeddedHttpServer.class.getName())
+                .log(Level.SEVERE, null, ex);
+        }
+
+    }
+}

jersey/src/main/java/com/baeldung/jersey/server/model/Fruit.java

@@ -0,0 +1,20 @@
+package com.baeldung.jersey.server.model;
+
+public class Fruit {
+
+    private final String name;
+    private final String colour;
+
+    public Fruit(String name, String colour) {
+        this.name = name;
+        this.colour = colour;
+    }
+    
+    public String getName() {
+        return name;
+    }
+
+    public String getColour() {
+        return colour;
+    }
+}

jersey/src/main/java/com/baeldung/jersey/server/rest/FruitResource.java

@@ -0,0 +1,55 @@
+package com.baeldung.jersey.server.rest;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import javax.ws.rs.GET;
+import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
+import javax.ws.rs.Produces;
+import javax.ws.rs.core.MediaType;
+
+import org.glassfish.jersey.server.mvc.ErrorTemplate;
+import org.glassfish.jersey.server.mvc.Template;
+import org.glassfish.jersey.server.mvc.Viewable;
+
+import com.baeldung.jersey.server.model.Fruit;
+
+@Path("/fruit")
+public class FruitResource {
+
+    @GET
+    public Viewable get() {
+        return new Viewable("/index.ftl", "Fruit Index Page");
+    }
+
+    @GET
+    @Template(name = "/all.ftl")
+    @Path("/all")
+    @Produces(MediaType.TEXT_HTML)
+    public Map<String, Object> getAllFruit() {
+        final List<Fruit> fruits = new ArrayList<>();
+        fruits.add(new Fruit("banana", "yellow"));
+        fruits.add(new Fruit("apple", "red"));
+        fruits.add(new Fruit("kiwi", "green"));
+
+        final Map<String, Object> model = new HashMap<String, Object>();
+        model.put("items", fruits);
+        return model;
+    }
+
+    @GET
+    @ErrorTemplate(name = "/error.ftl")
+    @Template(name = "/named.ftl")
+    @Path("{name}")
+    @Produces(MediaType.TEXT_HTML)
+    public String getFruitByName(@PathParam("name") String name) {
+        if (!"banana".equalsIgnoreCase(name)) {
+            throw new IllegalArgumentException("Fruit not found: " + name);
+        }
+        return name;
+    }
+
+}

jersey/src/main/resources/templates/freemarker/all.ftl

@@ -0,0 +1,14 @@
+<html>
+    <head>
+      <title>All fruit!</title>
+    </head>
+    <body>
+      <h1>All fruit!</h1>
+      <p>Fruits:</p>
+      <ul>
+		<#list items as fruit>
+			<li>${fruit.name}</li>
+		</#list>
+	  </ul>	
+    </body>
+</html>

jersey/src/main/resources/templates/freemarker/error.ftl

@@ -0,0 +1,8 @@
+<html>
+    <head>
+      <title>Welcome!</title>
+    </head>
+    <body>
+      <h1>Error -  ${model.message}!</h1>
+    </body>
+</html>

jersey/src/main/resources/templates/freemarker/index.ftl

@@ -0,0 +1,8 @@
+<html>
+    <head>
+      <title>Welcome!</title>
+    </head>
+    <body>
+      <h1>Welcome ${model}!</h1>
+    </body>
+</html>

jersey/src/main/resources/templates/freemarker/named.ftl

@@ -0,0 +1,8 @@
+<html>
+    <head>
+      <title>Welcome!</title>
+    </head>
+    <body>
+      <h1>Found fruit - ${model}!</h1>
+    </body>
+</html>

jersey/src/test/java/com/baeldung/jersey/server/rest/FruitResourceIntegrationTest.java

@@ -0,0 +1,42 @@
+package com.baeldung.jersey.server.rest;
+
+import static org.hamcrest.CoreMatchers.allOf;
+import static org.hamcrest.CoreMatchers.containsString;
+
+import javax.ws.rs.core.Application;
+
+import org.glassfish.jersey.test.JerseyTest;
+import org.junit.Assert;
+import org.junit.Test;
+
+import com.baeldung.jersey.server.config.ViewApplicationConfig;
+
+public class FruitResourceIntegrationTest extends JerseyTest {
+
+    @Override
+    protected Application configure() {
+        return new ViewApplicationConfig();
+    }
+
+    @Test
+    public void testAllFruit() {
+        final String response = target("/fruit/all").request()
+            .get(String.class);
+        Assert.assertThat(response, allOf(containsString("banana"), containsString("apple"), containsString("kiwi")));
+    }
+
+    @Test
+    public void testIndex() {
+        final String response = target("/fruit").request()
+            .get(String.class);
+        Assert.assertThat(response, containsString("Welcome Fruit Index Page!"));
+    }
+
+    @Test
+    public void testErrorTemplate() {
+        final String response = target("/fruit/orange").request()
+            .get(String.class);
+        Assert.assertThat(response, containsString("Error -  Fruit not found: orange!"));
+    }
+
+}

jnosql/README.md

@@ -0,0 +1,2 @@
+### Relevant Articles: 
+- [A Guide to Eclipse JNoSQL](http://www.baeldung.com/eclipse-jnosql)

libraries-data/README.md

@@ -8,4 +8,5 @@
 - [Introduction to HikariCP](http://www.baeldung.com/hikaricp)
 - [Introduction to JCache](http://www.baeldung.com/jcache)
 - [A Guide to Apache Ignite](http://www.baeldung.com/apache-ignite)
-- [Apache Ignite with Spring Data](http://www.baeldung.com/apache-ignite-spring-data)
+- [Apache Ignite with Spring Data](http://www.baeldung.com/apache-ignite-spring-data)
+- [Guide to JMapper](https://github.com/eugenp/tutorials/tree/master/libraries-data)

libraries/README.md

@@ -86,6 +86,8 @@
 - [Convert String to Date in Java](http://www.baeldung.com/java-string-to-date)
 - [Histograms with Apache Commons Frequency](http://www.baeldung.com/apache-commons-frequency)
 - [Guide to Resilience4j](http://www.baeldung.com/resilience4j)
+- [Parsing YAML with SnakeYAML](http://www.baeldung.com/java-snake-yaml)
+- [Guide to JMapper](http://www.baeldung.com/jmapper)
 
 The libraries module contains examples related to small libraries that are relatively easy to use and does not require any separate module of its own.
 

maven/README.md

@@ -7,3 +7,4 @@
 - [The Maven Failsafe Plugin](http://www.baeldung.com/maven-failsafe-plugin)
 - [The Maven Verifier Plugin](http://www.baeldung.com/maven-verifier-plugin)
 - [The Maven Clean Plugin](http://www.baeldung.com/maven-clean-plugin)
+- [Build a Jar with Maven and Ignore the Test Results](http://www.baeldung.com/maven-ignore-test-results)

micronaut/README.md

@@ -0,0 +1,2 @@
+### Relevant Articles:
+- [Introduction to Micronaut Framework](http://www.baeldung.com/micronaut)

mustache/pom.xml

@@ -8,11 +8,10 @@
     <name>mustache</name>
 
     <parent>
-        <groupId>org.springframework.boot</groupId>
-        <artifactId>spring-boot-starter-parent</artifactId>
-        <version>1.5.4.RELEASE</version>
-        <relativePath />
-        <!-- lookup parent from repository -->
+        <artifactId>parent-boot-1</artifactId>
+        <groupId>com.baeldung</groupId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../parent-boot-1</relativePath>
     </parent>
 
     <dependencies>
@@ -154,7 +153,7 @@
 
         <!-- maven plugins -->
         <maven-compiler-plugin.version>3.7.0</maven-compiler-plugin.version>
-        <maven-surefire-plugin.version>2.19.1</maven-surefire-plugin.version>
+        <maven-surefire-plugin.version>2.21.0</maven-surefire-plugin.version>
         <datafactory.version>0.8</datafactory.version>
         <webjars.bootstrap.version>3.3.7</webjars.bootstrap.version>
         <java.version>1.8</java.version>

parent-boot-2/pom.xml

@@ -8,18 +8,27 @@
     <description>Parent for all Spring Boot 2 modules</description>
 
     <parent>
-        <groupId>org.springframework.boot</groupId>
-        <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.0.1.RELEASE</version>
-        <relativePath />
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-modules</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
     </parent>
 
+	<dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-dependencies</artifactId>
+       			<version>2.0.1.RELEASE</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
     <dependencies>
         <dependency>
             <groupId>io.rest-assured</groupId>
             <artifactId>rest-assured</artifactId>
-            <version>${rest-assured.version}</version>
-        </dependency>
+            </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-test</artifactId>
@@ -27,79 +36,16 @@
         </dependency>
     </dependencies>
 
-    <build>
-        <plugins>
-            <plugin>
-                <groupId>org.springframework.boot</groupId>
-                <artifactId>spring-boot-maven-plugin</artifactId>
-            </plugin>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-surefire-plugin</artifactId>
-                <version>${maven-surefire-plugin.version}</version>
-                <configuration>
-                    <forkCount>3</forkCount>
-                    <reuseForks>true</reuseForks>
-                    <excludes>
-                        <exclude>**/*IntegrationTest.java</exclude>
-                        <exclude>**/*IntTest.java</exclude>
-                        <exclude>**/*LongRunningUnitTest.java</exclude>
-                        <exclude>**/*ManualTest.java</exclude>
-                        <exclude>**/*LiveTest.java</exclude>
-                    </excludes>
-                </configuration>
-            </plugin>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-compiler-plugin</artifactId>
-                <version>${maven-compiler-plugin.version}</version>
-                <configuration>
-                    <source>${maven.compiler.source}</source>
-                    <target>${maven.compiler.target}</target>
-                </configuration>
-            </plugin>
-        </plugins>
-    </build>
-
+	<build>
+		<plugins>
+			<plugin>
+			  <groupId>org.springframework.boot</groupId>
+			  <artifactId>spring-boot-maven-plugin</artifactId>
+			  <version>2.0.1.RELEASE</version>
+			</plugin>
+		</plugins>
+	</build>
     <profiles>
-        <profile>
-            <id>integration</id>
-            <build>
-                <plugins>
-                    <plugin>
-                        <groupId>org.apache.maven.plugins</groupId>
-                        <artifactId>maven-surefire-plugin</artifactId>
-                        <executions>
-                            <execution>
-                                <phase>integration-test</phase>
-                                <goals>
-                                    <goal>test</goal>
-                                </goals>
-                                <configuration>
-                                    <excludes>
-                                        <exclude>**/*ManualTest.java</exclude>
-                                        <exclude>**/*LiveTest.java</exclude>
-                                        <exclude>**/AutoconfigurationTest.java</exclude>
-                                        <exclude>**/*UnitTest.java</exclude>
-                                    </excludes>
-                                    <includes>
-                                        <include>**/*IntegrationTest.java</include>
-                                        <include>**/*IntTest.java</include>
-                                        <include>*/EthControllerTestOne.java</include>
-                                        <include>**/*EntryPointsTest.java</include>
-                                    </includes>
-                                </configuration>
-                            </execution>
-                        </executions>
-                        <configuration>
-                            <systemPropertyVariables>
-                                <test.mime>json</test.mime>
-                            </systemPropertyVariables>
-                        </configuration>
-                    </plugin>
-                </plugins>
-            </build>
-        </profile>
         <profile>
             <id>thin-jar</id>
             <build>
@@ -122,13 +68,8 @@
     </profiles>
 
     <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-        <java.version>1.8</java.version>
         <rest-assured.version>3.1.0</rest-assured.version>
         <!-- plugins -->
-        <maven.compiler.source>1.8</maven.compiler.source>
-        <maven.compiler.target>1.8</maven.compiler.target>
         <thin.version>1.0.11.RELEASE</thin.version>
     </properties>
 

patterns/design-patterns/src/main/java/com/baeldung/state/DeliveredState.java

@@ -0,0 +1,25 @@
+package com.baeldung.state;
+
+public class DeliveredState implements PackageState {
+
+    @Override
+    public void next(Package pkg) {
+        pkg.setState(new ReceivedState());
+    }
+
+    @Override
+    public void prev(Package pkg) {
+        pkg.setState(new OrderedState());
+    }
+
+    @Override
+    public void printStatus() {
+        System.out.println("Package delivered to post office, not received yet.");
+    }
+
+    @Override
+    public String toString() {
+        return "DeliveredState{}";
+    }
+
+}

patterns/design-patterns/src/main/java/com/baeldung/state/OrderedState.java

@@ -0,0 +1,24 @@
+package com.baeldung.state;
+
+public class OrderedState implements PackageState {
+
+    @Override
+    public void next(Package pkg) {
+        pkg.setState(new DeliveredState());
+    }
+
+    @Override
+    public void prev(Package pkg) {
+        System.out.println("The package is in it's root state.");
+    }
+
+    @Override
+    public void printStatus() {
+        System.out.println("Package ordered, not delivered to the office yet.");
+    }
+
+    @Override
+    public String toString() {
+        return "OrderedState{}";
+    }
+}

patterns/design-patterns/src/main/java/com/baeldung/state/Package.java

@@ -0,0 +1,26 @@
+package com.baeldung.state;
+
+public class Package {
+
+    private PackageState state = new OrderedState();
+
+    public PackageState getState() {
+        return state;
+    }
+
+    public void setState(PackageState state) {
+        this.state = state;
+    }
+
+    public void previousState() {
+        state.prev(this);
+    }
+
+    public void nextState() {
+        state.next(this);
+    }
+
+    public void printStatus() {
+        state.printStatus();
+    }
+}

patterns/design-patterns/src/main/java/com/baeldung/state/PackageState.java

@@ -0,0 +1,10 @@
+package com.baeldung.state;
+
+public interface PackageState {
+
+    void next(Package pkg);
+
+    void prev(Package pkg);
+
+    void printStatus();
+}

patterns/design-patterns/src/main/java/com/baeldung/state/ReceivedState.java

@@ -0,0 +1,24 @@
+package com.baeldung.state;
+
+public class ReceivedState implements PackageState {
+
+    @Override
+    public void next(Package pkg) {
+        System.out.println("This package is already received by a client.");
+    }
+
+    @Override
+    public void prev(Package pkg) {
+        pkg.setState(new DeliveredState());
+    }
+
+    @Override
+    public void printStatus() {
+        System.out.println("Package was received by client.");
+    }
+
+    @Override
+    public String toString() {
+        return "ReceivedState{}";
+    }
+}

patterns/design-patterns/src/main/java/com/baeldung/state/StateDemo.java

@@ -0,0 +1,19 @@
+package com.baeldung.state;
+
+public class StateDemo {
+
+    public static void main(String[] args) {
+
+        Package pkg = new Package();
+        pkg.printStatus();
+
+        pkg.nextState();
+        pkg.printStatus();
+
+        pkg.nextState();
+        pkg.printStatus();
+
+        pkg.nextState();
+        pkg.printStatus();
+    }
+}

patterns/design-patterns/src/test/java/com/baeldung/state/StatePatternUnitTest.java

@@ -0,0 +1,33 @@
+package com.baeldung.state;
+
+import com.baeldung.state.Package;
+
+import static org.junit.Assert.assertThat;
+import static org.hamcrest.CoreMatchers.instanceOf;
+
+import org.junit.Test;
+
+public class StatePatternUnitTest {
+
+    @Test
+    public void givenNewPackage_whenPackageReceived_thenStateReceived() {
+        Package pkg = new Package();
+
+        assertThat(pkg.getState(), instanceOf(OrderedState.class));
+        pkg.nextState();
+
+        assertThat(pkg.getState(), instanceOf(DeliveredState.class));
+        pkg.nextState();
+
+        assertThat(pkg.getState(), instanceOf(ReceivedState.class));
+    }
+
+    @Test
+    public void givenDeliveredPackage_whenPrevState_thenStateOrdered() {
+        Package pkg = new Package();
+        pkg.setState(new DeliveredState());
+        pkg.previousState();
+
+        assertThat(pkg.getState(), instanceOf(OrderedState.class));
+    }
+}

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

@@ -177,46 +177,12 @@
     </build>
 
     <repositories>
-        <repository>
-            <id>spring-snapshots</id>
-            <name>Spring Snapshots</name>
-            <url>https://repo.spring.io/snapshot</url>
-            <snapshots>
-                <enabled>true</enabled>
-            </snapshots>
-        </repository>
-        <repository>
-            <id>spring-milestones</id>
-            <name>Spring Milestones</name>
-            <url>https://repo.spring.io/milestone</url>
-            <snapshots>
-                <enabled>false</enabled>
-            </snapshots>
-        </repository>
         <repository>
             <id>dynamodb-local</id>
             <name>DynamoDB Local Release Repository</name>
             <url>${dynamodblocal.repository.url}</url>
         </repository>
     </repositories>
-    <pluginRepositories>
-        <pluginRepository>
-            <id>spring-snapshots</id>
-            <name>Spring Snapshots</name>
-            <url>https://repo.spring.io/snapshot</url>
-            <snapshots>
-                <enabled>true</enabled>
-            </snapshots>
-        </pluginRepository>
-        <pluginRepository>
-            <id>spring-milestones</id>
-            <name>Spring Milestones</name>
-            <url>https://repo.spring.io/milestone</url>
-            <snapshots>
-                <enabled>false</enabled>
-            </snapshots>
-        </pluginRepository>
-    </pluginRepositories>
 
     <properties>
         <!-- The main class to start by executing java -jar -->

pom.xml

@@ -43,9 +43,15 @@
 		<dependency>
 			<groupId>org.junit.jupiter</groupId>
 			<artifactId>junit-jupiter-engine</artifactId>
-			<version>${junit.jupiter.version}</version>
+			<version>${junit-jupiter.version}</version>
 			<scope>test</scope>
 		</dependency>
+		<dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-api</artifactId>
+			<version>${junit-jupiter.version}</version>
+			<scope>test</scope>
+        </dependency>
 		<dependency>
 			<groupId>org.hamcrest</groupId>
 			<artifactId>hamcrest-core</artifactId>
@@ -70,6 +76,14 @@
 			<version>${mockito.version}</version>
 			<scope>test</scope>
 		</dependency>
+		<dependency>
+			<groupId>org.apache.maven.surefire</groupId>
+			<artifactId>surefire-logger-api</artifactId>
+			<version>${maven-surefire-plugin.version}</version>
+			<!-- to get around bug https://github.com/junit-team/junit5/issues/801 -->
+			<scope>test</scope>
+			<optional>true</optional>
+		</dependency>
 	</dependencies>
 
 	<build>
@@ -98,6 +112,23 @@
 						<exclude>**/*LiveTest.java</exclude>
 					</excludes>
 				</configuration>
+				<dependencies>
+	                <dependency>
+	                    <groupId>org.junit.platform</groupId>
+	                    <artifactId>junit-platform-surefire-provider</artifactId>
+	                    <version>${junit-platform.version}</version>
+	                </dependency>
+	                <dependency>
+	                    <groupId>org.junit.jupiter</groupId>
+	                    <artifactId>junit-jupiter-engine</artifactId>
+	                    <version>${junit-jupiter.version}</version>
+	                </dependency>
+					<dependency>
+						<groupId>org.junit.vintage</groupId>
+						<artifactId>junit-vintage-engine</artifactId>
+  	                    <version>${junit-jupiter.version}</version>
+					</dependency>
+            	</dependencies>
 			</plugin>
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
@@ -187,6 +218,10 @@
 					</execution>
 				</executions>
 			</plugin>
+			<plugin>
+				<artifactId>maven-war-plugin</artifactId>
+				<version>${maven-war-plugin.version}</version>
+			</plugin>
 		</plugins>
 		<extensions>
 			<extension>
@@ -406,6 +441,7 @@
 				<module>spring-4</module>
 				<module>spring-5</module>
 				<module>spring-5-reactive</module>
+				<module>spring-5-reactive-client</module>
 				<module>spring-5-mvc</module>
 				<module>spring-5-security</module>
 				<module>spring-activiti</module>
@@ -551,8 +587,6 @@
 				<module>apache-meecrowave</module>
 				<module>spring-reactive-kotlin</module>
 				<module>jnosql</module>
-				<module>testing-modules/junit-abstract</module>
-				<module>sse-jaxrs</module>
 				<module>spring-boot-angular-ecommerce</module>
 			</modules>
 
@@ -664,6 +698,7 @@
 				<module>spring-4</module>
 				<module>spring-5</module>
 				<module>spring-5-reactive</module>
+				<module>spring-5-reactive-client</module>
 				<module>spring-5-mvc</module>
 				<module>spring-5-security</module>
 				<module>spring-activiti</module>
@@ -673,7 +708,6 @@
 				<module>spring-amqp-simple</module>
 				<module>spring-apache-camel</module>
 				<module>spring-batch</module>
-				<module>testing-modules/junit-abstract</module>				
 				<module>jmh</module>
 
 				<!-- group 2 - Pass, 11-16 min, 42 test failures, 4,020 KB -->
@@ -905,6 +939,7 @@
 				<module>json</module>
 				<module>jsoup</module>
 				<module>testing-modules/junit-5</module>
+				<module>testing-modules/junit5-migration</module>
 				<module>jws</module>
 				<module>libraries-data</module>
 				<module>linkrest</module>
@@ -943,6 +978,7 @@
 				<module>spark-java</module>
 				<module>spring-4</module>
 				<module>spring-5-reactive</module>
+				<module>spring-5-reactive-client</module>
 				<module>spring-5-mvc</module>
 				<module>spring-5-security</module>
 				<module>spring-activiti</module>
@@ -1079,7 +1115,6 @@
 				<module>antlr</module>
 				<module>maven-archetype</module>
 				<module>apache-meecrowave</module>
-				<module>testing-modules/junit-abstract</module>
 
                 <module>spring-hibernate4</module>
                 <module>xml</module>
@@ -1222,7 +1257,7 @@
 		<maven-failsafe-plugin.version>2.19.1</maven-failsafe-plugin.version>
 		<commons-io.version>2.5</commons-io.version>
 		<commons-cli.version>1.4</commons-cli.version>
-		<maven-war-plugin.version>2.6</maven-war-plugin.version>
+		<maven-war-plugin.version>3.0.0</maven-war-plugin.version>
 		<javax.servlet-api.version>3.1.0</javax.servlet-api.version>
 		<jstl-api.version>1.2</jstl-api.version>
 		<javax.servlet.jsp-api.version>2.3.1</javax.servlet.jsp-api.version>
@@ -1230,7 +1265,8 @@
 		<jstl.version>1.2</jstl.version>
 		<jackson-databind.version>2.5.0</jackson-databind.version>
 		<commons-fileupload.version>1.3</commons-fileupload.version>
-		<junit.jupiter.version>5.0.2</junit.jupiter.version>
+		<junit-platform.version>1.2.0</junit-platform.version>
+		<junit-jupiter.version>5.2.0</junit-jupiter.version>
 		<directory-maven-plugin.version>0.3.1</directory-maven-plugin.version>
 		<maven-install-plugin.version>2.5.1</maven-install-plugin.version>
 		<custom-pmd.version>0.0.1</custom-pmd.version>

spring-4/pom.xml

@@ -8,10 +8,10 @@
     <name>spring-4</name>
 
     <parent>
-        <groupId>org.springframework.boot</groupId>
-        <artifactId>spring-boot-starter-parent</artifactId>
-        <version>1.5.10.RELEASE</version>
-        <relativePath />
+        <artifactId>parent-boot-1</artifactId>
+        <groupId>com.baeldung</groupId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../parent-boot-1</relativePath>
     </parent>
 
     <dependencies>

spring-5-mvc/pom.xml

@@ -82,11 +82,6 @@
             <artifactId>spring-boot-starter-test</artifactId>
             <scope>test</scope>
         </dependency>
-        <dependency>
-            <groupId>junit</groupId>
-            <artifactId>junit</artifactId>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>com.jayway.restassured</groupId>
             <artifactId>rest-assured</artifactId>
@@ -137,46 +132,11 @@
                     </dependency>
                 </dependencies>
             </plugin>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-surefire-plugin</artifactId>
-                <configuration>
-
-                    <failIfNoTests>false</failIfNoTests>
-                    <excludes>
-                        <exclude>**/*IntegrationTest.java</exclude>
-                        <exclude>**/*IntTest.java</exclude>
-                        <exclude>**/*LiveTest.java</exclude>
-                    </excludes>
-                </configuration>
-            </plugin>
         </plugins>
     </build>
-
-    <repositories>
-        <repository>
-            <id>spring-milestones</id>
-            <name>Spring Milestones</name>
-            <url>https://repo.spring.io/milestone</url>
-            <snapshots>
-                <enabled>false</enabled>
-            </snapshots>
-        </repository>
-    </repositories>
-    <pluginRepositories>
-        <pluginRepository>
-            <id>spring-milestones</id>
-            <name>Spring Milestones</name>
-            <url>https://repo.spring.io/milestone</url>
-            <snapshots>
-                <enabled>false</enabled>
-            </snapshots>
-        </pluginRepository>
-    </pluginRepositories>
-
+    
     <properties>
         <jayway-rest-assured.version>2.9.0</jayway-rest-assured.version>
         <kotlin.version>1.1.2</kotlin.version>
     </properties>
-
 </project>

spring-5-reactive-client/pom.xml

@@ -11,10 +11,10 @@
     <description>spring 5 sample project about new features</description>
 
     <parent>
-        <groupId>org.springframework.boot</groupId>
-        <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.0.0.M7</version>
-        <relativePath /> <!-- lookup parent from repository -->
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-boot-2</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../parent-boot-2</relativePath>
     </parent>
 
     <dependencies>
@@ -43,20 +43,6 @@
             <groupId>javax.json.bind</groupId>
             <artifactId>javax.json.bind-api</artifactId>
         </dependency>
-
-        <!-- Dependencies for Yasson -->
-        <!-- <dependency> -->
-        <!-- <groupId>org.eclipse</groupId> -->
-        <!-- <artifactId>yasson</artifactId> -->
-        <!-- <version>1.0</version> -->
-        <!-- </dependency> -->
-        <!-- <dependency> -->
-        <!-- <groupId>org.glassfish</groupId> -->
-        <!-- <artifactId>javax.json</artifactId> -->
-        <!-- <version>1.1.2</version> -->
-        <!-- </dependency> -->
-        <!-- Dependencies for Johnzon -->
-
         <dependency>
             <groupId>org.apache.geronimo.specs</groupId>
             <artifactId>geronimo-json_1.1_spec</artifactId>
@@ -102,28 +88,6 @@
             <scope>test</scope>
         </dependency>
 
-        <dependency>
-            <groupId>org.junit.jupiter</groupId>
-            <artifactId>junit-jupiter-api</artifactId>
-        </dependency>
-        <dependency>
-            <groupId>org.junit.jupiter</groupId>
-            <artifactId>junit-jupiter-engine</artifactId>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>org.junit.platform</groupId>
-            <artifactId>junit-platform-surefire-provider</artifactId>
-            <version>${junit.platform.version}</version>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>org.junit.platform</groupId>
-            <artifactId>junit-platform-runner</artifactId>
-            <version>${junit.platform.version}</version>
-            <scope>test</scope>
-        </dependency>
-
         <dependency>
             <groupId>org.projectlombok</groupId>
             <artifactId>lombok</artifactId>
@@ -145,54 +109,10 @@
                     <layout>JAR</layout>
                 </configuration>
             </plugin>
-
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-surefire-plugin</artifactId>
-                <configuration>
-                    <forkCount>3</forkCount>
-                    <reuseForks>true</reuseForks>
-                    <parallel>methods</parallel>
-                    <useUnlimitedThreads>true</useUnlimitedThreads>
-                    <excludes>
-                        <exclude>**/*IntegrationTest.java</exclude>
-                        <exclude>**/*IntTest.java</exclude>
-                        <exclude>**/*LiveTest.java</exclude>
-                    </excludes>
-                </configuration>
-            </plugin>
         </plugins>
     </build>
 
-    <repositories>
-        <repository>
-            <id>spring-milestones</id>
-            <name>Spring Milestones</name>
-            <url>https://repo.spring.io/milestone</url>
-            <snapshots>
-                <enabled>false</enabled>
-            </snapshots>
-        </repository>
-    </repositories>
-    <pluginRepositories>
-        <pluginRepository>
-            <id>spring-milestones</id>
-            <name>Spring Milestones</name>
-            <url>https://repo.spring.io/milestone</url>
-            <snapshots>
-                <enabled>false</enabled>
-            </snapshots>
-        </pluginRepository>
-    </pluginRepositories>
-
     <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-        <java.version>1.8</java.version>
-        <junit.platform.version>1.0.0</junit.platform.version>
-        <junit.jupiter.version>5.0.0</junit.jupiter.version>
-        <maven-surefire-plugin.version>2.20</maven-surefire-plugin.version>
-        <spring.version>5.0.2.RELEASE</spring.version>
         <reactor-spring.version>1.0.1.RELEASE</reactor-spring.version>
         <johnzon.version>1.1.3</johnzon.version>
         <jsonb-api.version>1.0</jsonb-api.version>

spring-5-reactive/README.md

@@ -13,3 +13,6 @@ The "REST With Spring" Classes: http://bit.ly/restwithspring
 - [Reactive WebSockets with Spring 5](http://www.baeldung.com/spring-5-reactive-websockets)
 - [Spring Webflux Filters](http://www.baeldung.com/spring-webflux-filters)
 - [How to Set a Header on a Response with Spring 5](http://www.baeldung.com/spring-response-header)
+- [Spring Webflux and CORS](http://www.baeldung.com/spring-webflux-cors)
+- [Handling Errors in Spring WebFlux](http://www.baeldung.com/spring-webflux-errors)
+- [Guide to Spring 5 WebFlux](http://www.baeldung.com/spring-webflux)

spring-5-reactive/pom.xml

@@ -43,20 +43,6 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-actuator</artifactId>
         </dependency>
-
-        <!-- Dependencies for Yasson -->
-        <!-- <dependency> -->
-        <!-- <groupId>org.eclipse</groupId> -->
-        <!-- <artifactId>yasson</artifactId> -->
-        <!-- <version>1.0</version> -->
-        <!-- </dependency> -->
-        <!-- <dependency> -->
-        <!-- <groupId>org.glassfish</groupId> -->
-        <!-- <artifactId>javax.json</artifactId> -->
-        <!-- <version>1.1.2</version> -->
-        <!-- </dependency> -->
-        <!-- Dependencies for Johnzon -->
-        <!-- lombok -->
         <dependency>
             <groupId>org.projectlombok</groupId>
             <artifactId>lombok</artifactId>
@@ -100,28 +86,6 @@
             <version>${commons-collections4.version}</version>
             <scope>test</scope>
         </dependency>
-
-        <dependency>
-            <groupId>org.junit.jupiter</groupId>
-            <artifactId>junit-jupiter-api</artifactId>
-        </dependency>
-        <dependency>
-            <groupId>org.junit.jupiter</groupId>
-            <artifactId>junit-jupiter-engine</artifactId>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>org.junit.platform</groupId>
-            <artifactId>junit-platform-surefire-provider</artifactId>
-            <version>${junit.platform.version}</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>
         <dependency>
             <groupId>org.apache.commons</groupId>
             <artifactId>commons-lang3</artifactId>
@@ -159,29 +123,10 @@
                     <layout>JAR</layout>
                 </configuration>
             </plugin>
-
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-surefire-plugin</artifactId>
-                <configuration>
-                    <forkCount>3</forkCount>
-                    <reuseForks>true</reuseForks>
-                    <parallel>methods</parallel>
-                    <useUnlimitedThreads>true</useUnlimitedThreads>
-                    <excludes>
-                        <exclude>**/*IntegrationTest.java</exclude>
-                        <exclude>**/*IntTest.java</exclude>
-                        <exclude>**/*LiveTest.java</exclude>
-                    </excludes>
-                </configuration>
-            </plugin>
         </plugins>
     </build>
 
     <properties>
-        <junit.platform.version>1.0.0</junit.platform.version>
-        <junit.jupiter.version>5.0.2</junit.jupiter.version>
-        <maven-surefire-plugin.version>2.20</maven-surefire-plugin.version>
         <reactor-spring.version>1.0.1.RELEASE</reactor-spring.version>
         <rxjava-version>2.1.12</rxjava-version>
         <johnzon.version>1.1.3</johnzon.version>

spring-5-security/pom.xml

@@ -76,44 +76,7 @@
                     <layout>JAR</layout>
                 </configuration>
             </plugin>
-
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-surefire-plugin</artifactId>
-                <configuration>
-                    <forkCount>3</forkCount>
-                    <reuseForks>true</reuseForks>
-                    <parallel>methods</parallel>
-                    <useUnlimitedThreads>true</useUnlimitedThreads>
-                    <excludes>
-                        <exclude>**/*IntegrationTest.java</exclude>
-                        <exclude>**/*IntTest.java</exclude>
-                        <exclude>**/*LiveTest.java</exclude>
-                    </excludes>
-                </configuration>
-            </plugin>
         </plugins>
     </build>
 
-    <repositories>
-        <repository>
-            <id>spring-milestones</id>
-            <name>Spring Milestones</name>
-            <url>https://repo.spring.io/milestone</url>
-            <snapshots>
-                <enabled>false</enabled>
-            </snapshots>
-        </repository>
-    </repositories>
-    <pluginRepositories>
-        <pluginRepository>
-            <id>spring-milestones</id>
-            <name>Spring Milestones</name>
-            <url>https://repo.spring.io/milestone</url>
-            <snapshots>
-                <enabled>false</enabled>
-            </snapshots>
-        </pluginRepository>
-    </pluginRepositories>
-
 </project>

spring-5-security/src/test/java/com/baeldung/inmemory/InMemoryAuthControllerIntegrationTest.java

@@ -14,7 +14,7 @@ import org.springframework.test.context.junit4.SpringRunner;
 
 @RunWith(SpringRunner.class)
 @SpringBootTest(classes = InMemoryAuthApplication.class, webEnvironment = WebEnvironment.RANDOM_PORT)
-public class InMemoryAuthControllerTest {
+public class InMemoryAuthControllerIntegrationTest {
 
     @Autowired
     private TestRestTemplate template;

spring-5/README.md

@@ -12,3 +12,4 @@ The "REST With Spring" Classes: http://bit.ly/restwithspring
 - [Introduction to Spring REST Docs](http://www.baeldung.com/spring-rest-docs)
 - [Spring ResponseStatusException](http://www.baeldung.com/spring-response-status-exception)
 - [Spring Assert Statements](http://www.baeldung.com/spring-assert)
+- [Spring Security 5 – OAuth2 Login](http://www.baeldung.com/spring-security-5-oauth2-login)

spring-5/pom.xml

@@ -41,18 +41,6 @@
             <groupId>javax.json.bind</groupId>
             <artifactId>javax.json.bind-api</artifactId>
         </dependency>
-        <!-- Dependencies for Yasson -->
-        <!-- <dependency> -->
-        <!-- <groupId>org.eclipse</groupId> -->
-        <!-- <artifactId>yasson</artifactId> -->
-        <!-- <version>1.0</version> -->
-        <!-- </dependency> -->
-        <!-- <dependency> -->
-        <!-- <groupId>org.glassfish</groupId> -->
-        <!-- <artifactId>javax.json</artifactId> -->
-        <!-- <version>1.1.2</version> -->
-        <!-- </dependency> -->
-        <!-- Dependencies for Johnzon -->
         <dependency>
             <groupId>org.apache.geronimo.specs</groupId>
             <artifactId>geronimo-json_1.1_spec</artifactId>
@@ -85,45 +73,21 @@
             <groupId>org.springframework</groupId>
             <artifactId>spring-test</artifactId>
         </dependency>
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter-test</artifactId>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>org.springframework.security</groupId>
             <artifactId>spring-security-test</artifactId>
             <scope>test</scope>
         </dependency>
-
         <dependency>
             <groupId>org.apache.commons</groupId>
             <artifactId>commons-collections4</artifactId>
             <version>${commons-collections4.version}</version>
             <scope>test</scope>
         </dependency>
-
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter-api</artifactId>
         </dependency>
-        <dependency>
-            <groupId>org.junit.jupiter</groupId>
-            <artifactId>junit-jupiter-engine</artifactId>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>org.junit.platform</groupId>
-            <artifactId>junit-platform-surefire-provider</artifactId>
-            <version>${junit.platform.version}</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>
         <!-- restdocs -->
         <dependency>
             <groupId>org.springframework.restdocs</groupId>
@@ -147,22 +111,6 @@
                     <layout>JAR</layout>
                 </configuration>
             </plugin>
-
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-surefire-plugin</artifactId>
-                <configuration>
-                    <forkCount>3</forkCount>
-                    <reuseForks>true</reuseForks>
-                    <parallel>methods</parallel>
-                    <useUnlimitedThreads>true</useUnlimitedThreads>
-                    <excludes>
-                        <exclude>**/*IntegrationTest.java</exclude>
-                        <exclude>**/*IntTest.java</exclude>
-                        <exclude>**/*LiveTest.java</exclude>
-                    </excludes>
-                </configuration>
-            </plugin>
             <plugin>
                 <groupId>org.asciidoctor</groupId>
                 <artifactId>asciidoctor-maven-plugin</artifactId>
@@ -190,9 +138,6 @@
     </build>
 
     <properties>
-        <junit.platform.version>1.0.0</junit.platform.version>
-        <spring.version>5.0.2.RELEASE</spring.version>
-        <reactor-spring.version>1.0.1.RELEASE</reactor-spring.version>
         <geronimo-json_1.1_spec.version>1.0</geronimo-json_1.1_spec.version>
         <asciidoctor-plugin.version>1.5.6</asciidoctor-plugin.version>
         <commons-collections4.version>4.1</commons-collections4.version>

spring-activiti/pom.xml

@@ -10,10 +10,10 @@
     <description>Demo project for Spring Boot</description>
 
     <parent>
-        <groupId>org.springframework.boot</groupId>
-        <artifactId>spring-boot-starter-parent</artifactId>
-        <version>1.5.4.RELEASE</version>
-        <relativePath />
+        <artifactId>parent-boot-1</artifactId>
+        <groupId>com.baeldung</groupId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../parent-boot-1</relativePath>
     </parent>
 
     <dependencies>

spring-all/README.md

@@ -29,3 +29,4 @@ The "REST With Spring" Classes: http://bit.ly/restwithspring
 - [Quick Guide to the Spring @Order Annotation](http://www.baeldung.com/spring-order)
 - [Spring Web Contexts](http://www.baeldung.com/spring-web-contexts)
 - [Spring Cache – Creating a Custom KeyGenerator](http://www.baeldung.com/spring-cache-custom-keygenerator)
+- [Spring @Primary Annotation](http://www.baeldung.com/spring-primary)

spring-batch/README.md

@@ -7,3 +7,4 @@
 - [Introduction to Spring Batch](http://www.baeldung.com/introduction-to-spring-batch)
 - [Spring Batch using Partitioner](http://www.baeldung.com/spring-batch-partitioner)
 - [Spring Batch Tasklets vs Chunks Approach](http://www.baeldung.com/spring-batch-tasklet-chunk)
+- [How to Trigger and Stop a Scheduled Spring Batch Job](http://www.baeldung.com/spring-batch-start-stop-job)