Merge branch 'master' into master

.travis.yml

@@ -1,16 +1,12 @@
 language: java
 
 before_install: 
-  - export MAVEN_OPTS="-Xmx2048M -Xss128M -XX:+CMSClassUnloadingEnabled -XX:+UseG1GC -XX:-UseGCOverheadLimit"
   - echo "MAVEN_OPTS='-Xmx2048M -Xss128M -XX:+CMSClassUnloadingEnabled -XX:+UseG1GC -XX:-UseGCOverheadLimit'" > ~/.mavenrc
 
 install: travis_wait 60 mvn -q test -fae
 
 sudo: required
 
-before_script:
-  - echo "MAVEN_OPTS='-Xmx2048M -Xss128M -XX:+CMSClassUnloadingEnabled -XX:+UseG1GC -XX:-UseGCOverheadLimit'" > ~/.mavenrc
-
 jdk:
   - oraclejdk8
 

core-java-9/src/test/java/com/baeldung/java9/Java9OptionalTest.java

@@ -0,0 +1,85 @@
+package com.baeldung.java9;
+
+public class Java9OptionalTest {
+    @Test
+    public void givenOptionalOfSome_whenToStream_thenShouldTreatItAsOneElementStream() {
+        //given
+        Optional<String> value = Optional.of("a");
+
+        //when
+        List<String> collect = value.stream().map(String::toUpperCase).collect(Collectors.toList());
+
+        //then
+        assertThat(collect).hasSameElementsAs(List.of("A"));
+    }
+
+    @Test
+    public void givenOptionalOfNone_whenToStream_thenShouldTreatItAsZeroElementStream() {
+        //given
+        Optional<String> value = Optional.empty();
+
+        //when
+        List<String> collect = value.stream().map(String::toUpperCase).collect(Collectors.toList());
+
+        //then
+        assertThat(collect).isEmpty();
+    }
+
+    @Test
+    public void givenOptional_whenPresent_thenShouldExecuteProperCallback() {
+        //given
+        Optional<String> value = Optional.of("properValue");
+        AtomicInteger successCounter = new AtomicInteger(0);
+        AtomicInteger onEmptyOptionalCounter = new AtomicInteger(0);
+
+        //when
+        value.ifPresentOrElse((v) -> successCounter.incrementAndGet(), onEmptyOptionalCounter::incrementAndGet);
+
+        //then
+        assertThat(successCounter.get()).isEqualTo(1);
+        assertThat(onEmptyOptionalCounter.get()).isEqualTo(0);
+    }
+
+    @Test
+    public void givenOptional_whenNotPresent_thenShouldExecuteProperCallback() {
+        //given
+        Optional<String> value = Optional.empty();
+        AtomicInteger successCounter = new AtomicInteger(0);
+        AtomicInteger onEmptyOptionalCounter = new AtomicInteger(0);
+
+        //when
+        value.ifPresentOrElse((v) -> successCounter.incrementAndGet(), onEmptyOptionalCounter::incrementAndGet);
+
+        //then
+        assertThat(successCounter.get()).isEqualTo(0);
+        assertThat(onEmptyOptionalCounter.get()).isEqualTo(1);
+    }
+
+    @Test
+    public void givenOptional_whenPresent_thenShouldTakeAValueFromIt() {
+        //given
+        String expected = "properValue";
+        Optional<String> value = Optional.of(expected);
+        Optional<String> defaultValue = Optional.of("default");
+
+        //when
+        Optional<String> result = value.or(() -> defaultValue);
+
+        //then
+        assertThat(result.get()).isEqualTo(expected);
+    }
+
+    @Test
+    public void givenOptional_whenEmpty_thenShouldTakeAValueFromOr() {
+        //given
+        String defaultString = "default";
+        Optional<String> value = Optional.empty();
+        Optional<String> defaultValue = Optional.of(defaultString);
+
+        //when
+        Optional<String> result = value.or(() -> defaultValue);
+
+        //then
+        assertThat(result.get()).isEqualTo(defaultString);
+    }
+}

core-java/README.md

@@ -102,3 +102,15 @@
 - [How to Perform a Simple HTTP Request in Java](http://www.baeldung.com/java-http-request)
 - [Call Methods at Runtime Using Java Reflection](http://www.baeldung.com/java-method-reflection)
 - [Guide to DelayQueue](http://www.baeldung.com/java-delay-queue)
+- [Guide to UUID in JAVA] (http://www.baeldung.com/guide-to-uuid-in-java)
+- [Comparing getPath(), getAbsolutePath(), and getCanonicalPath() in Java](http://www.baeldung.com/java-path)
+- [How to Add a Single Element to a Stream](http://www.baeldung.com/java-stream-append-prepend)
+- [Iterating Over Enum Values in Java](http://www.baeldung.com/java-enum-iteration)
+- [A Guide to Java SynchronousQueue](http://www.baeldung.com/java-synchronous-queue)
+- [Guide to the Java TransferQueue](http://www.baeldung.com/java-transfer-queue)
+- [Kotlin Java Interoperability](http://www.baeldung.com/kotlin-java-interoperability)
+- [Guide to the ConcurrentSkipListMap](http://www.baeldung.com/java-concurrent-skip-list-map)
+- [Difference Between Wait and Sleep in Java](http://www.baeldung.com/java-wait-and-sleep)
+- [LongAdder and LongAccumulator in Java](http://www.baeldung.com/java-longadder-and-longaccumulator)
+- [Using Java MappedByteBuffer](http://www.baeldung.com/java-mapped-byte-buffer)
+

core-java/src/main/java/com/baeldung/concurrent/diningphilosophers/DiningPhilosophers.java

@@ -0,0 +1,29 @@
+package com.baeldung.concurrent.diningphilosophers;
+
+public class DiningPhilosophers {
+
+    public static void main(String[] args) throws Exception {
+
+        Philosopher[] philosophers = new Philosopher[5];
+        Object[] forks = new Object[philosophers.length];
+
+        for (int i = 0; i < forks.length; i++) {
+            forks[i] = new Object();
+        }
+
+        for (int i = 0; i < philosophers.length; i++) {
+
+            Object leftFork = forks[i];
+            Object rightFork = forks[(i + 1) % forks.length];
+
+            if (i == philosophers.length - 1) {
+                philosophers[i] = new Philosopher(rightFork, leftFork); // The last philosopher picks up the right fork first
+            } else {
+                philosophers[i] = new Philosopher(leftFork, rightFork);
+            }
+
+            Thread t = new Thread(philosophers[i], "Philosopher " + (i + 1));
+            t.start();
+        }
+    }
+}

core-java/src/main/java/com/baeldung/concurrent/diningphilosophers/Philosopher.java

@@ -0,0 +1,36 @@
+package com.baeldung.concurrent.diningphilosophers;
+
+public class Philosopher implements Runnable {
+
+    private final Object leftFork;
+    private final Object rightFork;
+
+    public Philosopher(Object left, Object right) {
+        this.leftFork = left;
+        this.rightFork = right;
+    }
+
+    private void doAction(String action) throws InterruptedException {
+        System.out.println(Thread.currentThread().getName() + " " + action);
+        Thread.sleep(((int) (Math.random() * 100)));
+    }
+
+    @Override public void run() {
+        try {
+            while (true) {
+                doAction(System.nanoTime() + ": Thinking"); // thinking
+                synchronized (leftFork) {
+                    doAction(System.nanoTime() + ": Picked up left fork");
+                    synchronized (rightFork) {
+                        doAction(System.nanoTime() + ": Picked up right fork - eating"); // eating
+                        doAction(System.nanoTime() + ": Put down right fork");
+                    }
+                    doAction(System.nanoTime() + ": Put down left fork. Returning to thinking");
+                }
+            }
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+            return;
+        }
+    }
+}

core-java/src/main/java/com/baeldung/java/enumiteration/DaysOfWeekEnum.java

@@ -0,0 +1,31 @@
+package com.baeldung.java.enumiteration;
+
+import java.util.stream.Stream;
+
+public enum DaysOfWeekEnum {
+	SUNDAY("off"), 
+	MONDAY("working"), 
+	TUESDAY("working"), 
+	WEDNESDAY("working"), 
+	THURSDAY("working"), 
+	FRIDAY("working"), 
+	SATURDAY("off");
+
+	private String typeOfDay;
+
+	DaysOfWeekEnum(String typeOfDay) {
+		this.typeOfDay = typeOfDay;
+	}
+	
+	public String getTypeOfDay() {
+		return typeOfDay;
+	}
+
+	public void setTypeOfDay(String typeOfDay) {
+		this.typeOfDay = typeOfDay;
+	}
+
+	public static Stream<DaysOfWeekEnum> stream() {
+		return Stream.of(DaysOfWeekEnum.values());
+	}
+}

core-java/src/main/java/com/baeldung/java/enumiteration/EnumIterationExamples.java

@@ -0,0 +1,18 @@
+package com.baeldung.java.enumiteration;
+
+import java.util.EnumSet;
+
+public class EnumIterationExamples {
+	public static void main(String[] args) {
+		System.out.println("Enum iteration using forEach:");
+		EnumSet.allOf(DaysOfWeekEnum.class).forEach(day -> System.out.println(day));
+
+		System.out.println("Enum iteration using Stream:");
+		DaysOfWeekEnum.stream().filter(d -> d.getTypeOfDay().equals("off")).forEach(System.out::println);
+
+		System.out.println("Enum iteration using for loop:");
+		for (DaysOfWeekEnum day : DaysOfWeekEnum.values()) {
+			System.out.println(day);
+		}
+	}
+}

core-java/src/main/java/com/baeldung/maths/Round.java

@@ -33,7 +33,7 @@ public class Round {
     
     public static double roundNotPrecise(double value, int places) {
         if (places < 0) throw new IllegalArgumentException();
-        
+
         BigDecimal bd = new BigDecimal(value);
         bd = bd.setScale(places, RoundingMode.HALF_UP);
         return bd.doubleValue();

core-java/src/main/java/com/baeldung/noclassdeffounderror/ClassWithInitErrors.java

@@ -0,0 +1,5 @@
+package com.baeldung.noclassdeffounderror;
+
+public class ClassWithInitErrors {
+    static int data = 1 / 0;
+}

core-java/src/main/java/com/baeldung/noclassdeffounderror/NoClassDefFoundErrorExample.java

@@ -0,0 +1,14 @@
+package com.baeldung.noclassdeffounderror;
+
+public class NoClassDefFoundErrorExample {
+    public ClassWithInitErrors getClassWithInitErrors() {
+        ClassWithInitErrors test;
+        try {
+            test = new ClassWithInitErrors();
+        } catch (Throwable t) {
+            System.out.println(t);
+        }
+        test = new ClassWithInitErrors();
+        return test;
+    }
+}

core-java/src/main/java/com/baeldung/stream/StreamApi.java

@@ -0,0 +1,24 @@
+package com.baeldung.stream;
+
+import java.util.List;
+import java.util.stream.Stream;
+
+public class StreamApi {
+
+    public String getLastElementUsingReduce(List<String> valueList) {
+        Stream<String> stream = valueList.stream();
+        return stream.reduce((first, second) -> second).orElse(null);
+    }
+    
+    public Integer getInfiniteStreamLastElementUsingReduce() {
+        Stream<Integer> stream = Stream.iterate(0, i -> i + 1);
+        return stream.limit(20).reduce((first, second) -> second).orElse(null);
+    }
+    
+    public String getLastElementUsingSkip(List<String> valueList) {
+        long count = valueList.stream().count();
+        Stream<String> stream = valueList.stream();
+        return stream.skip(count - 1).findFirst().orElse(null);
+    }
+
+}

core-java/src/main/java/com/baeldung/string/StringHelper.java

@@ -2,23 +2,23 @@ package com.baeldung.string;
 
 import java.util.Optional;
 
-public class StringHelper {
-    public static String removeLastChar(String s) {
+class StringHelper {
+    static String removeLastChar(String s) {
         return (s == null || s.length() == 0) ? s : (s.substring(0, s.length() - 1));
     }
 
-    public static String removeLastCharRegex(String s) {
+    static String removeLastCharRegex(String s) {
         return (s == null) ? s : s.replaceAll(".$", "");
     }
 
-    public static String removeLastCharOptional(String s) {
+    static String removeLastCharOptional(String s) {
         return Optional.ofNullable(s)
             .filter(str -> str.length() != 0)
             .map(str -> str.substring(0, str.length() - 1))
             .orElse(s);
     }
 
-    public static String removeLastCharRegexOptional(String s) {
+    static String removeLastCharRegexOptional(String s) {
         return Optional.ofNullable(s)
             .map(str -> str.replaceAll(".$", ""))
             .orElse(s);

core-java/src/main/java/com/baeldung/uuid/UUIDGenerator.java

@@ -0,0 +1,118 @@
+package com.baeldung.uuid;
+
+import java.io.UnsupportedEncodingException;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+import java.util.UUID;
+
+public class UUIDGenerator {
+    
+    /**
+     * These are predefined UUID for name spaces
+     */
+    private static final String NAMESPACE_DNS   = "6ba7b810-9dad-11d1-80b4-00c04fd430c8";
+    private static final String NAMESPACE_URL   = "6ba7b811-9dad-11d1-80b4-00c04fd430c8";
+    private static final String NAMESPACE_OID   = "6ba7b812-9dad-11d1-80b4-00c04fd430c8";
+    private static final String NAMESPACE_X500  = "6ba7b814-9dad-11d1-80b4-00c04fd430c8";
+
+    private static final  char[] hexArray = "0123456789ABCDEF".toCharArray();
+
+    public static void main(String[] args) {
+        try {
+            System.out.println("Type 3 : " + generateType3UUID(NAMESPACE_DNS, "google.com"));
+            System.out.println("Type 4 : " + generateType4UUID());
+            System.out.println("Type 5 : " + generateType5UUID(NAMESPACE_URL, "google.com"));
+            System.out.println("Unique key  : " + generateUniqueKeysWithUUIDAndMessageDigest());
+        } catch (NoSuchAlgorithmException | UnsupportedEncodingException e) {
+            e.printStackTrace();
+        }
+    }
+
+    /**
+     * Type 4 UUID Generation
+     */
+    public static UUID generateType4UUID() {
+        UUID uuid = UUID.randomUUID();
+        return uuid;
+    }
+    
+    /**
+     * Type 3 UUID Generation
+     * 
+     * @throws UnsupportedEncodingException 
+     */
+    public static UUID generateType3UUID(String namespace, String name) throws UnsupportedEncodingException {
+        String source = namespace + name;
+        byte[] bytes = source.getBytes("UTF-8");
+        UUID uuid = UUID.nameUUIDFromBytes(bytes);
+        return uuid;
+    }
+    
+    /**
+     * Type 5 UUID Generation
+     * 
+     * @throws UnsupportedEncodingException 
+     */
+    public static UUID generateType5UUID(String namespace, String name) throws UnsupportedEncodingException {
+        String source = namespace + name;
+        byte[] bytes = source.getBytes("UTF-8");
+        UUID uuid = type5UUIDFromBytes(bytes);
+        return uuid;
+    }
+    
+    
+    public static UUID type5UUIDFromBytes(byte[] name) {
+        MessageDigest md;
+        try {
+            md = MessageDigest.getInstance("SHA-1");
+        } catch (NoSuchAlgorithmException nsae) {
+            throw new InternalError("MD5 not supported", nsae);
+        }
+        byte[] bytes = md.digest(name);
+        bytes[6]  &= 0x0f;  /* clear version        */
+        bytes[6]  |= 0x50;  /* set to version 5     */
+        bytes[8]  &= 0x3f;  /* clear variant        */
+        bytes[8]  |= 0x80;  /* set to IETF variant  */
+        return constructType5UUID(bytes);
+    }
+    
+    private static UUID constructType5UUID(byte[] data) {
+        long msb = 0;
+        long lsb = 0;
+        assert data.length == 16 : "data must be 16 bytes in length";
+        
+        for (int i=0; i<8; i++)
+            msb = (msb << 8) | (data[i] & 0xff);
+        
+        for (int i=8; i<16; i++)
+            lsb = (lsb << 8) | (data[i] & 0xff);
+        return new UUID(msb, lsb);
+    }
+
+    
+    /**
+     * Unique Keys Generation Using Message Digest and Type 4 UUID
+     * 
+     * @throws NoSuchAlgorithmException 
+     * @throws UnsupportedEncodingException 
+     */
+    public static String generateUniqueKeysWithUUIDAndMessageDigest() throws NoSuchAlgorithmException, UnsupportedEncodingException {
+        MessageDigest salt = MessageDigest.getInstance("SHA-256");
+        salt.update(UUID.randomUUID()
+            .toString()
+            .getBytes("UTF-8"));
+        String digest = bytesToHex(salt.digest());
+        return digest;
+    }
+
+    public static String bytesToHex(byte[] bytes) {
+        char[] hexChars = new char[bytes.length * 2];
+        for (int j = 0; j < bytes.length; j++) {
+            int v = bytes[j] & 0xFF;
+            hexChars[j * 2] = hexArray[v >>> 4];
+            hexChars[j * 2 + 1] = hexArray[v & 0x0F];
+        }
+        return new String(hexChars);
+    }
+
+}

core-java/src/test/java/com/baeldung/classnotfoundexception/ClassNotFoundExceptionTest.java

@@ -0,0 +1,11 @@
+package com.baeldung.classnotfoundexception;
+
+import org.junit.Test;
+
+public class ClassNotFoundExceptionTest {
+
+    @Test(expected = ClassNotFoundException.class)
+    public void givenNoDriversInClassPath_whenLoadDrivers_thenClassNotFoundException() throws ClassNotFoundException {
+        Class.forName("oracle.jdbc.driver.OracleDriver");
+    }
+}

core-java/src/test/java/com/baeldung/noclassdeffounderror/NoClassDefFoundErrorTest.java

@@ -0,0 +1,12 @@
+package com.baeldung.noclassdeffounderror;
+
+import org.junit.Test;
+
+public class NoClassDefFoundErrorTest {
+
+    @Test(expected = NoClassDefFoundError.class)
+    public void givenInitErrorInClass_whenloadClass_thenNoClassDefFoundError() {
+        NoClassDefFoundErrorExample sample = new NoClassDefFoundErrorExample();
+        sample.getClassWithInitErrors();
+    }
+}

core-java/src/test/java/com/baeldung/regexp/EscapingCharsTest.java

@@ -0,0 +1,71 @@
+package com.baeldung.regexp;
+
+import static junit.framework.TestCase.assertEquals;
+import static org.junit.Assert.assertThat;
+import static org.hamcrest.CoreMatchers.*;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import org.junit.Test;
+
+public class EscapingCharsTest {
+    @Test
+    public void givenRegexWithDot_whenMatchingStr_thenMatches() {
+        String strInput = "foof";
+        String strRegex = "foo.";
+        
+        assertEquals(true, strInput.matches(strRegex));
+    }
+    
+    @Test
+    public void givenRegexWithDotEsc_whenMatchingStr_thenNotMatching() {
+        String strInput = "foof";
+        String strRegex = "foo\\.";
+        
+        assertEquals(false, strInput.matches(strRegex));
+    }
+    
+    @Test
+    public void givenRegexWithPipeEscaped_whenSplitStr_thenSplits() {
+        String strInput = "foo|bar|hello|world";
+        String strRegex = "\\Q|\\E";
+        
+        assertEquals(4, strInput.split(strRegex).length);
+    }
+    
+    @Test
+    public void givenRegexWithPipeEscQuoteMeth_whenSplitStr_thenSplits() {
+        String strInput = "foo|bar|hello|world";
+        String strRegex = "|";
+        
+        assertEquals(4,strInput.split(Pattern.quote(strRegex)).length);
+    }
+    
+    @Test
+    public void givenRegexWithDollar_whenReplacing_thenNotReplace() {
+        String strInput = "I gave $50 to my brother."
+                + "He bought candy for $35. Now he has $15 left.";
+        String strRegex = "$";
+        String strReplacement = "£";
+        String output = "I gave £50 to my brother."
+                + "He bought candy for £35. Now he has £15 left.";
+        Pattern p = Pattern.compile(strRegex);
+        Matcher m = p.matcher(strInput);
+        
+        assertThat(output, not(equalTo(m.replaceAll(strReplacement))));
+    }
+    
+    @Test
+    public void givenRegexWithDollarEsc_whenReplacing_thenReplace() {
+        String strInput = "I gave $50 to my brother."
+                + "He bought candy for $35. Now he has $15 left.";
+        String strRegex = "\\$";
+        String strReplacement = "£";
+        String output = "I gave £50 to my brother."
+                + "He bought candy for £35. Now he has £15 left.";
+        Pattern p = Pattern.compile(strRegex);
+        Matcher m = p.matcher(strInput);
+        
+        assertEquals(output,m.replaceAll(strReplacement));
+    }
+}

core-java/src/test/java/com/baeldung/stream/StreamAddUnitTest.java

@@ -0,0 +1,46 @@
+package com.baeldung.stream;
+
+import java.util.List;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+import static org.junit.Assert.assertEquals;
+import org.junit.Test;
+
+public class StreamAddUnitTest {
+
+    @Test
+    public void givenStream_whenAppendingObject_thenAppended() {
+        Stream<String> anStream = Stream.of("a", "b", "c", "d", "e");
+
+        Stream<String> newStream = Stream.concat(anStream, Stream.of("A"));
+
+        List<String> resultList = newStream.collect(Collectors.toList());
+        assertEquals(resultList.get(resultList.size() - 1), "A");
+    }
+
+    @Test
+    public void givenStream_whenPrependingObject_thenPrepended() {
+        Stream<Integer> anStream = Stream.of(1, 2, 3, 4, 5);
+
+        Stream<Integer> newStream = Stream.concat(Stream.of(99), anStream);
+
+        assertEquals(newStream.findFirst()
+            .get(), (Integer) 99);
+    }
+
+    @Test
+    public void givenStream_whenInsertingObject_thenInserted() {
+        Stream<Double> anStream = Stream.of(1.1, 2.2, 3.3);
+
+        Stream<Double> newStream = insertInStream(anStream, 9.9, 3);
+
+        List<Double> resultList = newStream.collect(Collectors.toList());
+        assertEquals(resultList.get(3), (Double) 9.9);
+    }
+
+    public <T> Stream<T> insertInStream(Stream<T> stream, T elem, int index) {
+        List<T> result = stream.collect(Collectors.toList());
+        result.add(index, elem);
+        return result.stream();
+    }
+}

core-java/src/test/java/com/baeldung/stream/StreamApiTest.java

@@ -0,0 +1,43 @@
+package com.baeldung.stream;
+
+import static org.junit.Assert.assertEquals;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.junit.Test;
+
+public class StreamApiTest {
+    private StreamApi streamApi = new StreamApi();
+
+    @Test
+    public void givenList_whenGetLastElementUsingReduce_thenReturnLastElement() {
+        List<String> valueList = new ArrayList<String>();
+        valueList.add("Joe");
+        valueList.add("John");
+        valueList.add("Sean");
+
+        String last = streamApi.getLastElementUsingReduce(valueList);
+
+        assertEquals("Sean", last);
+    }
+    
+    @Test
+    public void givenInfiniteStream_whenGetInfiniteStreamLastElementUsingReduce_thenReturnLastElement() {
+        Integer last = streamApi.getInfiniteStreamLastElementUsingReduce();
+        assertEquals(new Integer(19), last);
+    }
+    
+    @Test
+    public void givenListAndCount_whenGetLastElementUsingSkip_thenReturnLastElement() {
+        List<String> valueList = new ArrayList<String>();
+        valueList.add("Joe");
+        valueList.add("John");
+        valueList.add("Sean");
+
+        String last = streamApi.getLastElementUsingSkip(valueList);
+
+        assertEquals("Sean", last);
+    }
+
+}

core-java/src/test/java/org/baeldung/java/JavaRandomUnitTest.java

@@ -167,9 +167,11 @@ public class JavaRandomUnitTest {
         final int leftLimit = 97; // letter 'a'
         final int rightLimit = 122; // letter 'z'
         final int targetStringLength = 10;
+        final Random random = new Random();
         final StringBuilder buffer = new StringBuilder(targetStringLength);
+
         for (int i = 0; i < targetStringLength; i++) {
-            final int randomLimitedInt = leftLimit + (int) (new Random().nextFloat() * (rightLimit - leftLimit + 1));
+            final int randomLimitedInt = leftLimit + (int) (random.nextFloat() * (rightLimit - leftLimit + 1));
             buffer.append((char) randomLimitedInt);
         }
         final String generatedString = buffer.toString();

ejb/ejb-session-beans/pom.xml

@@ -0,0 +1,106 @@
+<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.ejb</groupId>
+    <artifactId>ejb</artifactId>
+    <version>1.0-SNAPSHOT</version>
+  </parent>
+  <artifactId>ejb-session-beans</artifactId>
+  
+  <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <arquillian-bom.version>1.1.12.Final</arquillian-bom.version>
+        <shrinkwrap-resolver-impl-maven.version>2.2.6</shrinkwrap-resolver-impl-maven.version>
+        <arquillian-junit-container.version>1.1.12.Final</arquillian-junit-container.version>
+        <arquillian-glassfish-embedded-3.1.version>1.0.0.Final</arquillian-glassfish-embedded-3.1.version>
+        <junit.version>4.12</junit.version>
+        <javaee-api.version>7.0</javaee-api.version>
+    </properties>
+
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>org.jboss.arquillian</groupId>
+                <artifactId>arquillian-bom</artifactId>
+                <version>1.1.13.Final</version>
+                <scope>import</scope>
+                <type>pom</type>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
+
+    <dependencies>
+
+        <dependency>
+            <groupId>javax</groupId>
+            <artifactId>javaee-api</artifactId>
+            <version>${javaee-api.version}</version>
+            <scope>provided</scope>
+        </dependency>
+
+
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>4.12</version>
+            <scope>test</scope>
+        </dependency>
+
+
+        <dependency>
+            <groupId>org.jboss.arquillian.junit</groupId>
+            <artifactId>arquillian-junit-container</artifactId>
+            <scope>test</scope>
+        </dependency>
+
+    </dependencies>
+
+    <profiles>
+        <profile>
+            <id>arquillian-glassfish-embedded</id>
+            <activation>
+                <activeByDefault>true</activeByDefault>
+            </activation>
+            <dependencies>
+                <dependency>
+                    <groupId>org.jboss.arquillian.container</groupId>
+                    <artifactId>arquillian-glassfish-embedded-3.1</artifactId>
+                    <version>1.0.0.CR4</version>
+                    <scope>test</scope>
+                </dependency>
+                <dependency>
+                    <groupId>org.glassfish.main.extras</groupId>
+                    <artifactId>glassfish-embedded-all</artifactId>
+                    <version>3.1.2</version>
+                    <scope>test</scope>
+                </dependency>
+            </dependencies>
+        </profile>
+    </profiles>
+
+    <build>
+        <plugins>
+            <plugin>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.1</version>
+                <configuration>
+                    <source>1.8</source>
+                    <target>1.8</target>
+                </configuration>
+            </plugin>
+            <plugin>
+                <artifactId>maven-war-plugin</artifactId>
+                <version>2.4</version>
+                <configuration>
+                    <failOnMissingWebXml>false</failOnMissingWebXml>
+                </configuration>
+            </plugin>
+            <plugin>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <version>2.17</version>
+            </plugin>
+        </plugins>
+    </build>
+  
+  
+</project>

ejb/ejb-session-beans/src/main/java/com/baeldung/ejb/stateful/EJBClient1.java

@@ -0,0 +1,11 @@
+package com.baeldung.ejb.stateful;
+
+import javax.ejb.EJB;
+
+public class EJBClient1 {
+
+    @EJB
+    public StatefulEJB statefulEJB;
+
+
+}

ejb/ejb-session-beans/src/main/java/com/baeldung/ejb/stateful/EJBClient2.java

@@ -0,0 +1,11 @@
+package com.baeldung.ejb.stateful;
+
+import javax.ejb.EJB;
+
+public class EJBClient2 {
+
+    @EJB
+    public StatefulEJB statefulEJB;
+
+
+}

ejb/ejb-session-beans/src/main/java/com/baeldung/ejb/stateful/StatefulEJB.java

@@ -0,0 +1,10 @@
+package com.baeldung.ejb.stateful;
+
+import javax.ejb.Stateful;
+
+@Stateful
+public class StatefulEJB {
+
+    public String name;
+
+}

ejb/ejb-session-beans/src/main/java/com/baeldung/ejb/stateless/EJBClient1.java

@@ -0,0 +1,10 @@
+package com.baeldung.ejb.stateless;
+
+import javax.ejb.EJB;
+
+public class EJBClient1 {
+
+    @EJB
+    public StatelessEJB statelessEJB;
+
+}

ejb/ejb-session-beans/src/main/java/com/baeldung/ejb/stateless/EJBClient2.java

@@ -0,0 +1,11 @@
+package com.baeldung.ejb.stateless;
+
+import javax.ejb.EJB;
+
+public class EJBClient2 {
+
+    @EJB
+    public  StatelessEJB statelessEJB;
+
+
+}

ejb/ejb-session-beans/src/main/java/com/baeldung/ejb/stateless/StatelessEJB.java

@@ -0,0 +1,11 @@
+package com.baeldung.ejb.stateless;
+
+import javax.ejb.Stateless;
+
+
+@Stateless
+public class StatelessEJB {
+
+    public String name;
+
+}

ejb/ejb-session-beans/src/test/java/com/baeldung/ejb/test/stateful/StatefulEJBTest.java

@@ -0,0 +1,51 @@
+package com.baeldung.ejb.test.stateful;
+
+import org.jboss.arquillian.container.test.api.Deployment;
+import org.jboss.arquillian.junit.Arquillian;
+import org.jboss.shrinkwrap.api.ShrinkWrap;
+import org.jboss.shrinkwrap.api.asset.EmptyAsset;
+import org.jboss.shrinkwrap.api.spec.JavaArchive;
+import org.junit.Assert;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import com.baeldung.ejb.stateful.EJBClient1;
+import com.baeldung.ejb.stateful.EJBClient2;
+import com.baeldung.ejb.stateful.StatefulEJB;
+
+import javax.inject.Inject;
+
+
+@RunWith(Arquillian.class)
+public class StatefulEJBTest {
+
+    @Inject
+    private EJBClient1 ejbClient1;
+
+    @Inject
+    private EJBClient2 ejbClient2;
+
+    @Test
+    public void givenOneStatefulBean_whenTwoClientsSetValueOnBean_thenClientStateIsMaintained() {
+
+        // act
+        ejbClient1.statefulEJB.name = "Client 1";
+        ejbClient2.statefulEJB.name = "Client 2";
+
+        // assert
+        Assert.assertNotEquals(ejbClient1.statefulEJB.name, ejbClient2.statefulEJB.name);
+        Assert.assertEquals("Client 1", ejbClient1.statefulEJB.name);
+        Assert.assertEquals("Client 2", ejbClient2.statefulEJB.name);
+
+    }
+
+    @Deployment
+    public static JavaArchive createDeployment() {
+        return ShrinkWrap.create(JavaArchive.class)
+                .addClass(StatefulEJB.class)
+                .addClass(EJBClient1.class)
+                .addClass(EJBClient2.class)
+                .addAsManifestResource(EmptyAsset.INSTANCE, "beans.xml");
+    }
+
+}

ejb/ejb-session-beans/src/test/java/com/baeldung/ejb/test/stateless/StatelessEJBTest.java

@@ -0,0 +1,62 @@
+package com.baeldung.ejb.test.stateless;
+
+import org.jboss.arquillian.container.test.api.Deployment;
+import org.jboss.arquillian.junit.Arquillian;
+import org.jboss.shrinkwrap.api.ShrinkWrap;
+import org.jboss.shrinkwrap.api.asset.EmptyAsset;
+import org.jboss.shrinkwrap.api.spec.JavaArchive;
+import org.junit.Assert;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import com.baeldung.ejb.stateless.EJBClient1;
+import com.baeldung.ejb.stateless.EJBClient2;
+import com.baeldung.ejb.stateless.StatelessEJB;
+
+import javax.inject.Inject;
+
+
+@RunWith(Arquillian.class)
+public class StatelessEJBTest {
+
+    @Inject
+    private EJBClient1 ejbClient1;
+
+    @Inject
+    private EJBClient2 ejbClient2;
+
+    @Test
+    public void givenOneStatelessBean_whenStateIsSetInOneBean_secondBeanShouldHaveSameState() {
+
+        // act
+        ejbClient1.statelessEJB.name = "Client 1";
+
+        // assert
+        Assert.assertEquals("Client 1", ejbClient1.statelessEJB.name);
+        Assert.assertEquals("Client 1", ejbClient2.statelessEJB.name);
+
+    }
+
+
+    @Test
+    public void givenOneStatelessBean_whenStateIsSetInBothBeans_secondBeanShouldHaveSecondBeanState() {
+
+        // act
+        ejbClient1.statelessEJB.name = "Client 1";
+        ejbClient2.statelessEJB.name = "Client 2";
+
+        // assert
+        Assert.assertEquals("Client 2", ejbClient2.statelessEJB.name);
+
+    }
+
+    @Deployment
+    public static JavaArchive createDeployment() {
+        return ShrinkWrap.create(JavaArchive.class)
+                .addClass(StatelessEJB.class)
+                .addClass(EJBClient1.class)
+                .addClass(EJBClient2.class)
+                .addAsManifestResource(EmptyAsset.INSTANCE, "beans.xml");
+    }
+
+}

ejb/pom.xml

@@ -40,7 +40,12 @@
                 <version>1.0-SNAPSHOT</version>
                 <type>ejb</type>
             </dependency>
-
+			 <dependency>
+                <groupId>com.baeldung.ejb</groupId>
+                <artifactId>ejb-session-beans</artifactId>
+                <version>1.0-SNAPSHOT</version>
+                <type>ejb</type>
+            </dependency>
             <dependency>
                 <groupId>javax</groupId>
                 <artifactId>javaee-api</artifactId>
@@ -75,5 +80,7 @@
     <modules>
         <module>ejb-remote</module>
         <module>ejb-client</module>
+        <module>ejb-session-beans</module>
+        <module>ejb-session-beans-client</module>
     </modules>
 </project>

guava21/README.md

@@ -1,2 +1,3 @@
 ### Relevant articles:
 - [New Stream, Comparator and Collector Functionality in Guava 21](http://www.baeldung.com/guava-21-new)
+- [New in Guava 21 common.util.concurrent](http://www.baeldung.com/guava-21-util-concurrent)

guest/log4j2-example/.gitignore

@@ -0,0 +1,4 @@
+/target/
+.settings/
+.classpath
+.project

guest/log4j2-example/java.log

@@ -0,0 +1,3 @@
+14:00:35.258 INFO Programmatic Logger Message
+14:03:51.178 INFO Programmatic Logger Message
+14:04:11.753 INFO Programmatic Logger Message

guest/log4j2-example/logs/app.log

@@ -0,0 +1,25 @@
+[
+{
+  "timeMillis" : 1496315051753,
+  "thread" : "main",
+  "level" : "INFO",
+  "loggerName" : "RollingFileLogger",
+  "message" : "Json Message 1",
+  "endOfBatch" : false,
+  "loggerFqcn" : "org.apache.logging.log4j.spi.AbstractLogger",
+  "threadId" : 1,
+  "threadPriority" : 5
+}
+, {
+  "timeMillis" : 1496315051862,
+  "thread" : "main",
+  "level" : "INFO",
+  "loggerName" : "RollingFileLogger",
+  "message" : "Json Messag 2",
+  "endOfBatch" : false,
+  "loggerFqcn" : "org.apache.logging.log4j.spi.AbstractLogger",
+  "threadId" : 1,
+  "threadPriority" : 5
+}
+
+]

guest/log4j2-example/pom.xml

@@ -0,0 +1,56 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<groupId>log4j2-example</groupId>
+	<artifactId>log4j2-example</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+
+	<dependencies>
+		<!-- This is the needed core component. -->
+		<dependency>
+			<groupId>org.apache.logging.log4j</groupId>
+			<artifactId>log4j-core</artifactId>
+			<version>${log4j-core.version}</version>
+		</dependency>
+
+		<!-- This is used by JSONLayout. -->
+		<dependency>
+			<groupId>com.fasterxml.jackson.core</groupId>
+			<artifactId>jackson-databind</artifactId>
+			<version>${jackson.version}</version>
+		</dependency>
+
+		<dependency>
+			<groupId>junit</groupId>
+			<artifactId>junit</artifactId>
+			<version>4.12</version>
+		</dependency>
+	</dependencies>
+
+	<build>
+		<resources>
+			<resource>
+				<directory>src/main/resources/</directory>
+				<excludes>
+					<exclude>**/*.java</exclude>
+				</excludes>
+			</resource>
+		</resources>
+		<plugins>
+			<plugin>
+				<artifactId>maven-compiler-plugin</artifactId>
+				<version>3.5</version>
+				<configuration>
+					<source>1.8</source>
+					<target>1.8</target>
+				</configuration>
+			</plugin>
+		</plugins>
+	</build>
+
+	<properties>
+		<jackson.version>2.8.8.1</jackson.version>
+		<log4j-core.version>2.8.2</log4j-core.version>
+	</properties>
+
+</project>

guest/log4j2-example/src/main/java/com/stackify/models/User.java

@@ -0,0 +1,43 @@
+package com.stackify.models;
+
+import java.time.LocalDate;
+
+public class User {
+    private String name;
+    private String email;
+    private LocalDate dateOfBirth;
+
+    public User() {
+    }
+
+    public User(String name, String email) {
+        super();
+        this.name = name;
+        this.email = email;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public void setEmail(String email) {
+        this.email = email;
+    }
+
+    public LocalDate getDateOfBirth() {
+        return dateOfBirth;
+    }
+
+    public void setDateOfBirth(LocalDate dateOfBirth) {
+        this.dateOfBirth = dateOfBirth;
+    }
+
+}

guest/log4j2-example/src/main/java/com/stackify/services/MyService.java

@@ -0,0 +1,14 @@
+package com.stackify.services;
+
+import java.time.LocalDate;
+import java.time.Period;
+
+import com.stackify.models.User;
+
+public class MyService {
+
+    public int calculateUserAge(User user) {
+        return Period.between(user.getDateOfBirth(), LocalDate.now()).getYears();
+    }
+
+}

guest/log4j2-example/src/main/resources/log4j2.xml

@@ -0,0 +1,62 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Configuration status="WARN">
+	<CustomLevels>
+		<CustomLevel name="NEW_XML_LEVEL" intLevel="350" />
+	</CustomLevels>
+	<Filters>
+		<BurstFilter level="INFO" rate="10" maxBurst="100" />
+	</Filters>
+	<Appenders>
+		<Console name="ColoredConsole" target="SYSTEM_OUT">
+			<PatternLayout
+				pattern="%d{HH:mm:ss.SSS} [%t] %highlight{%level}{FATAL=bg_red, ERROR=red, WARN=yellow, INFO=green, DEBUG=blue, NEW_LEVEL=black, NEW_XML_LEVEL=black} - %msg%n" />
+		</Console>
+		<Console name="Console" target="SYSTEM_OUT">
+			<PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %level - %msg%n" />
+		</Console>
+		<RollingFile name="RollingFileAppender" fileName="logs/app.log"
+			filePattern="logs/$${date:yyyy-MM}/app-%d{MM-dd-yyyy}-%i.log.gz">
+			<JSONLayout complete="true" compact="false" />
+			<Policies>
+				<OnStartupTriggeringPolicy />
+				<TimeBasedTriggeringPolicy />
+				<SizeBasedTriggeringPolicy size="50 MB" />
+			</Policies>
+			<DefaultRolloverStrategy max="20" />
+		</RollingFile>
+		<!-- 
+		<JDBC name="JDBCAppender" tableName="logs">
+			<DataSource jndiName="java:/comp/env/jdbc/LoggingDataSource" />
+			<Column name="date" isEventTimestamp="true" />
+			<Column name="logger" pattern="%logger" />
+			<Column name="level" pattern="%level" />
+			<Column name="message" pattern="%message" />
+			<Column name="exception" pattern="%ex{full}" />
+		</JDBC>
+		
+		<Failover name="FailoverAppender" primary="JDBCAppender">
+			<Failovers>
+				<AppenderRef ref="RollingFileAppender" />
+				<AppenderRef ref="Console" />
+			</Failovers>
+		</Failover>
+		 -->
+	</Appenders>
+	<Loggers>
+		<Root level="debug">
+			<AppenderRef ref="ColoredConsole" />
+		</Root>
+		<Logger name="ConsoleLogger">
+			<AppenderRef ref="Console" />
+		</Logger>
+		<Logger name="RollingFileLogger">
+			<AppenderRef ref="RollingFileAppender" />
+		</Logger>
+		<!-- 
+		<Logger name="JDBCLogger">
+			<AppenderRef ref="JDBCAppender" />
+			<RegexFilter regex="*jdbc*" onMatch="ACCEPT" onMismatch="DENY" />
+		</Logger>
+		 -->
+	</Loggers>
+</Configuration>

guest/log4j2-example/src/test/java/com/stackify/services/MyServiceTest.java

@@ -0,0 +1,81 @@
+package com.stackify.services;
+
+import java.time.LocalDate;
+import java.time.Month;
+
+import org.apache.logging.log4j.Level;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+import org.apache.logging.log4j.core.Appender;
+import org.apache.logging.log4j.core.LoggerContext;
+import org.apache.logging.log4j.core.appender.FileAppender;
+import org.apache.logging.log4j.core.config.AppenderRef;
+import org.apache.logging.log4j.core.config.Configuration;
+import org.apache.logging.log4j.core.config.LoggerConfig;
+import org.apache.logging.log4j.core.layout.PatternLayout;
+import org.junit.Test;
+
+import com.stackify.models.User;
+import com.stackify.services.MyService;
+
+public class MyServiceTest {
+
+    private static final Logger logger = LogManager.getLogger(MyServiceTest.class);
+
+    @Test
+    public void testService() {
+        MyService myService = new MyService();
+        User user = new User("John", "john@yahoo.com");
+        user.setDateOfBirth(LocalDate.of(1980, Month.APRIL, 20));
+        logger.info("Age of user {} is {}", () -> user.getName(), () -> myService.calculateUserAge(user));
+    }
+
+    @Test
+    public void testColoredLogger() {
+        logger.fatal("Fatal level message");
+        logger.error("Error level message");
+        logger.warn("Warn level message");
+        logger.info("Info level message");
+        logger.debug("Debug level message");
+    }
+
+    @Test
+    public void testRollingFileAppender() {
+        Logger rfLogger = LogManager.getLogger("RollingFileLogger");
+        rfLogger.info("Json Message 1");
+        rfLogger.info("Json Message 2");
+    }
+
+    @Test
+    public void testProgrammaticConfig() {
+        LoggerContext ctx = (LoggerContext) LogManager.getContext(false);
+        Configuration config = ctx.getConfiguration();
+
+        PatternLayout layout = PatternLayout.newBuilder().withConfiguration(config).withPattern("%d{HH:mm:ss.SSS} %level %msg%n").build();
+
+        Appender appender = FileAppender.newBuilder().setConfiguration(config).withName("programmaticFileAppender").withLayout(layout).withFileName("java.log").build();
+        appender.start();
+        config.addAppender(appender);
+        AppenderRef ref = AppenderRef.createAppenderRef("programmaticFileAppender", null, null);
+        AppenderRef[] refs = new AppenderRef[] { ref };
+
+        LoggerConfig loggerConfig = LoggerConfig.createLogger(false, Level.INFO, "programmaticLogger", "true", refs, null, config, null);
+
+        loggerConfig.addAppender(appender, null, null);
+        config.addLogger("programmaticLogger", loggerConfig);
+        ctx.updateLoggers();
+
+        Logger pLogger = LogManager.getLogger("programmaticLogger");
+        pLogger.info("Programmatic Logger Message");
+    }
+
+    @Test
+    public void testCustomLevel() {
+        Level myLevel = Level.forName("NEW_LEVEL", 350);
+        logger.log(myLevel, "Custom Level Message");
+
+        logger.log(Level.getLevel("NEW_XML_LEVEL"), "Custom XML Level Message");
+
+    }
+
+}

hibernate5/pom.xml

@@ -15,6 +15,8 @@
 	<url>http://maven.apache.org</url>
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+		<!-- Maven plugins -->
+        <maven-compiler-plugin.version>3.6.0</maven-compiler-plugin.version>
 	</properties>
 	<dependencies>
         <dependency>
@@ -22,6 +24,11 @@
             <artifactId>hibernate-core</artifactId>
             <version>5.2.9.Final</version>
         </dependency>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>4.12</version>
+        </dependency>
         <dependency>
             <groupId>com.h2database</groupId>
             <artifactId>h2</artifactId>
@@ -37,6 +44,32 @@
             </resource>
         </resources>
 
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>${maven-compiler-plugin.version}</version>
+                <configuration>
+                    <source>1.8</source>
+                    <target>1.8</target>
+                </configuration>
+            </plugin>
+            
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <configuration>
+                    <forkCount>3</forkCount>
+                    <reuseForks>true</reuseForks>
+                    <excludes>
+                        <exclude>**/*IntegrationTest.java</exclude>
+                        <exclude>**/*LiveTest.java</exclude>
+                    </excludes>
+                </configuration>
+            </plugin>
+
+        </plugins>
+
     </build>
     
 </project>

hibernate5/src/main/java/com/baeldung/hibernate/HibernateMultiTenantUtil.java

@@ -1,5 +1,9 @@
 package com.baeldung.hibernate;
 
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.net.URL;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Properties;
@@ -20,44 +24,56 @@ import com.baeldung.hibernate.pojo.Supplier;
 public class HibernateMultiTenantUtil {
     private static SessionFactory sessionFactory;
     private static Map<String, ConnectionProvider> connectionProviderMap = new HashMap<>();
-    private static final String[] tenantDBNames = { "mydb1","mydb2"};
+    private static final String[] tenantDBNames = { "mydb1", "mydb2" };
 
-    public static SessionFactory getSessionFactory() throws UnsupportedTenancyException {
+    public static SessionFactory getSessionFactory() throws UnsupportedTenancyException, IOException {
         if (sessionFactory == null) {
-            Configuration configuration = new Configuration().configure();
-            ServiceRegistry serviceRegistry = configureServiceRegistry(configuration);
-            sessionFactory = makeSessionFactory (serviceRegistry);
-//            sessionFactory = configuration.buildSessionFactory(serviceRegistry);
-            
-            
+            // Configuration configuration = new Configuration().configure();
+            ServiceRegistry serviceRegistry = configureServiceRegistry();
+            sessionFactory = makeSessionFactory(serviceRegistry);
+
         }
         return sessionFactory;
     }
 
     private static SessionFactory makeSessionFactory(ServiceRegistry serviceRegistry) {
-        MetadataSources metadataSources = new MetadataSources( serviceRegistry );
-        for(Class annotatedClasses : getAnnotatedClasses()) {
-            metadataSources.addAnnotatedClass( annotatedClasses );
+        MetadataSources metadataSources = new MetadataSources(serviceRegistry);
+        for (Class annotatedClasses : getAnnotatedClasses()) {
+            metadataSources.addAnnotatedClass(annotatedClasses);
         }
 
         Metadata metadata = metadataSources.buildMetadata();
-        return metadata.getSessionFactoryBuilder().build();
-        
+        return metadata.getSessionFactoryBuilder()
+            .build();
+
     }
 
     private static Class<?>[] getAnnotatedClasses() {
-        return new Class<?>[] {
-            Supplier.class
-        };
+        return new Class<?>[] { Supplier.class };
     }
 
-    private static ServiceRegistry configureServiceRegistry(Configuration configuration) throws UnsupportedTenancyException {
-        Properties properties = configuration.getProperties();
+    private static ServiceRegistry configureServiceRegistry() throws UnsupportedTenancyException, IOException {
+
+        // Properties properties = configuration.getProperties();
+        Properties properties = getProperties();
 
         connectionProviderMap = setUpConnectionProviders(properties, tenantDBNames);
         properties.put(AvailableSettings.MULTI_TENANT_CONNECTION_PROVIDER, new ConfigurableMultiTenantConnectionProvider(connectionProviderMap));
 
-        return new StandardServiceRegistryBuilder().applySettings(properties).build();
+        return new StandardServiceRegistryBuilder().applySettings(properties)
+            .build();
+    }
+
+    private static Properties getProperties() throws IOException {
+        Properties properties = new Properties();
+        URL propertiesURL = Thread.currentThread()
+            .getContextClassLoader()
+            .getResource("hibernate.properties");
+        FileInputStream inputStream = new FileInputStream(propertiesURL.getFile());
+        properties.load(inputStream);
+        System.out.println("LOADED PROPERTIES FROM hibernate.properties");
+
+        return properties;
     }
 
     private static Map<String, ConnectionProvider> setUpConnectionProviders(Properties properties, String[] tenantNames) throws UnsupportedTenancyException {
@@ -66,23 +82,27 @@ public class HibernateMultiTenantUtil {
             DriverManagerConnectionProviderImpl connectionProvider = new DriverManagerConnectionProviderImpl();
 
             String tenantStrategy = properties.getProperty("hibernate.multiTenancy");
-            System.out.println("Strategy:"+tenantStrategy);      
+            System.out.println("Strategy:" + tenantStrategy);
             properties.put(Environment.URL, tenantUrl(properties.getProperty(Environment.URL), tenant, tenantStrategy));
-            System.out.println("URL:"+properties.getProperty(Environment.URL));
+            System.out.println("URL:" + properties.getProperty(Environment.URL));
             connectionProvider.configure(properties);
-            System.out.println("Tenant:"+tenant);
+            System.out.println("Tenant:" + tenant);
             providerMap.put(tenant, connectionProvider);
-            
+
         }
         System.out.println("Added connections for:");
-        providerMap.keySet().stream().forEach(System.out::println);
+        providerMap.keySet()
+            .stream()
+            .forEach(System.out::println);
         return providerMap;
     }
 
     private static Object tenantUrl(String originalUrl, String tenant, String tenantStrategy) throws UnsupportedTenancyException {
-        if (tenantStrategy.toUpperCase().equals("DATABASE")) {
+        if (tenantStrategy.toUpperCase()
+            .equals("DATABASE")) {
             return originalUrl.replace(DEFAULT_DB_NAME, tenant);
-        } else if (tenantStrategy.toUpperCase().equals("SCHEMA")) {
+        } else if (tenantStrategy.toUpperCase()
+            .equals("SCHEMA")) {
             return originalUrl + String.format(SCHEMA_TOKEN, tenant);
         } else {
             throw new UnsupportedTenancyException("Not yet supported");

hibernate5/src/main/resources/hibernate.cfg.xml

@@ -1,14 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE hibernate-configuration PUBLIC
-		"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
-		"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
-<hibernate-configuration>
-    <session-factory>
-        <property name="hibernate.connection.driver_class">org.h2.Driver</property>
-        <property name="hibernate.connection.url">jdbc:h2:mem:mydb1;DB_CLOSE_DELAY=-1</property>
-        <property name="hibernate.connection.username">sa</property>
-        <property name="connection.password"/>
-        <property name="hibernate.dialect">org.hibernate.dialect.H2Dialect</property>
-        <property name="hibernate.multiTenancy">DATABASE</property>
-    </session-factory>
-</hibernate-configuration>

hibernate5/src/main/resources/hibernate.properties

@@ -0,0 +1,8 @@
+hibernate.connection.driver_class=org.h2.Driver
+hibernate.connection.url=jdbc:h2:mem:mydb1;DB_CLOSE_DELAY=-1
+hibernate.connection.username=sa
+jdbc.password=
+
+hibernate.dialect=org.hibernate.dialect.H2Dialect
+hibernate.show_sql=true
+hibernate.multiTenancy=DATABASE

hibernate5/src/test/java/com/baeldung/hibernate/MultiTenantHibernateIntegrationTest.java

@@ -1,65 +1,71 @@
 package com.baeldung.hibernate;
-import com.baeldung.hibernate.pojo.Supplier;
-import org.hibernate.Session;
-import org.hibernate.SessionFactory;
-import org.hibernate.Transaction;
-import org.junit.Test;
 
 import static org.junit.Assert.assertNotEquals;
 
+import java.io.IOException;
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.SQLException;
+import java.sql.Statement;
+
+import org.hibernate.Session;
+import org.hibernate.SessionFactory;
+import org.hibernate.Transaction;
+import org.junit.Before;
+import org.junit.Test;
+
+import com.baeldung.hibernate.pojo.Supplier;
 
 public class MultiTenantHibernateIntegrationTest {
     @Test
-    public void givenDBMode_whenFetchingSuppliers_thenComparingFromDbs () {
-        SessionFactory sessionFactory;
-        try {
-            sessionFactory = HibernateMultiTenantUtil.getSessionFactory();
-            
-            Session db1Session = sessionFactory
-                .withOptions().tenantIdentifier("mydb1").openSession();
-            
-            initDb1(db1Session);
-            
-            Transaction transaction = db1Session.getTransaction();
-            transaction.begin();
-            Supplier supplierFromDB1 = (Supplier)db1Session.createCriteria(Supplier.class).list().get(0);
-            transaction.commit();
-            
-            Session db2Session = sessionFactory
-                .withOptions().tenantIdentifier("mydb2").openSession();
-            
-            initDb2(db2Session);
-            db2Session.getTransaction().begin();
-            Supplier supplierFromDB2 = (Supplier) db2Session.createCriteria(Supplier.class).list().get(0);
-            db2Session.getTransaction().commit();
-            
-            System.out.println(supplierFromDB1);
-            System.out.println(supplierFromDB2);
-            
-            assertNotEquals(supplierFromDB1, supplierFromDB2);   
-        } catch (UnsupportedTenancyException e) {
-            e.printStackTrace();
-        }
+    public void givenDBMode_whenFetchingSuppliers_thenComparingFromDbs() throws UnsupportedTenancyException, IOException {
+        SessionFactory sessionFactory = HibernateMultiTenantUtil.getSessionFactory();
+
+        Session db1Session = sessionFactory.withOptions().tenantIdentifier("mydb1").openSession();
+
+        initDb1(db1Session);
+
+        Transaction transaction = db1Session.getTransaction();
+        transaction.begin();
+        Supplier supplierFromDB1 = (Supplier) db1Session.createCriteria(Supplier.class).list().get(0);
+        transaction.commit();
+
+        Session db2Session = sessionFactory.withOptions().tenantIdentifier("mydb2").openSession();
+
+        initDb2(db2Session);
+        db2Session.getTransaction().begin();
+        Supplier supplierFromDB2 = (Supplier) db2Session.createCriteria(Supplier.class).list().get(0);
+        db2Session.getTransaction().commit();
+
+        System.out.println(supplierFromDB1);
+        System.out.println(supplierFromDB2);
+
+        assertNotEquals(supplierFromDB1, supplierFromDB2);
+
     }
 
-
-
     private void initDb1(Session db1Session) {
         System.out.println("Init DB1");
         Transaction transaction = db1Session.getTransaction();
         transaction.begin();
         db1Session.createSQLQuery("DROP ALL OBJECTS").executeUpdate();
-        db1Session.createSQLQuery("create table Supplier (id integer generated by default as identity, country varchar(255), name varchar(255), primary key (id))").executeUpdate();
+        db1Session
+            .createSQLQuery(
+                "create table Supplier (id integer generated by default as identity, country varchar(255), name varchar(255), primary key (id))")
+            .executeUpdate();
         db1Session.createSQLQuery("insert into Supplier (id, country, name) values (null, 'John', 'USA')").executeUpdate();
         transaction.commit();
     }
-    
+
     private void initDb2(Session db2Session) {
         System.out.println("Init DB2");
         Transaction transaction = db2Session.getTransaction();
         transaction.begin();
         db2Session.createSQLQuery("DROP ALL OBJECTS").executeUpdate();
-        db2Session.createSQLQuery("create table Supplier (id integer generated by default as identity, country varchar(255), name varchar(255), primary key (id))").executeUpdate();
+        db2Session
+            .createSQLQuery(
+                "create table Supplier (id integer generated by default as identity, country varchar(255), name varchar(255), primary key (id))")
+            .executeUpdate();
         db2Session.createSQLQuery("insert into Supplier (id, country, name) values (null, 'Miller', 'UK')").executeUpdate();
         transaction.commit();
     }

hibernate5/src/test/java/hibernate.properties

@@ -0,0 +1,8 @@
+hibernate.connection.driver_class=org.h2.Driver
+hibernate.connection.url=jdbc:h2:mem:mydb1;DB_CLOSE_DELAY=-1
+hibernate.connection.username=sa
+jdbc.password=
+
+hibernate.dialect=org.hibernate.dialect.H2Dialect
+hibernate.show_sql=true
+hibernate.multiTenancy=DATABASE

image-processing/pom.xml

@@ -40,6 +40,16 @@
                     <groupId>commons-logging</groupId>
                 </exclusion>
             </exclusions>
+        </dependency>	
+        <dependency>
+            <groupId>com.twelvemonkeys.imageio</groupId>
+            <artifactId>imageio-core</artifactId>
+            <version>3.3.2</version>
+        </dependency> 
+        <dependency>
+            <groupId>com.twelvemonkeys.imageio</groupId>
+            <artifactId>imageio-bmp</artifactId>
+            <version>3.3.2</version>
         </dependency>
     </dependencies>
 

image-processing/src/main/java/com/baeldung/imageprocessing/twelvemonkeys/TwelveMonkeysExample.java

@@ -0,0 +1,47 @@
+package com.baeldung.imageprocessing.twelvemonkeys;
+
+import java.awt.BasicStroke;
+import java.awt.Color;
+import java.awt.Dimension;
+import java.awt.Graphics2D;
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.IOException;
+
+import javax.imageio.ImageIO;
+import javax.swing.ImageIcon;
+import javax.swing.JFrame;
+import javax.swing.JLabel;
+import javax.swing.JPanel;
+
+public class TwelveMonkeysExample {
+    public static void main(String[] args) throws IOException {
+        BufferedImage image  = loadImage();
+        drawRectangle(image);
+        displayImage(image);
+    }
+
+    private static BufferedImage loadImage() throws IOException {
+        String imagePath = TwelveMonkeysExample.class.getClassLoader().getResource("Penguin.ico").getPath();
+        return ImageIO.read(new File(imagePath));
+    }
+
+    private static void drawRectangle(BufferedImage image) {
+        Graphics2D g = (Graphics2D) image.getGraphics();
+        g.setStroke(new BasicStroke(3));
+        g.setColor(Color.BLUE);
+        g.drawRect(10, 10, image.getWidth() - 20, image.getHeight() - 20);
+    }
+
+    private static void displayImage(BufferedImage image) {
+        JLabel picLabel = new JLabel(new ImageIcon(image));
+
+        JPanel jPanel = new JPanel();
+        jPanel.add(picLabel);
+
+        JFrame f = new JFrame();
+        f.setSize(new Dimension(200, 200));
+        f.add(jPanel);
+        f.setVisible(true);
+    }
+}

jee7/README.md

@@ -3,3 +3,4 @@
 - [JSON Processing in Java EE 7](http://www.baeldung.com/jee7-json)
 - [Converters, Listeners and Validators in Java EE 7](http://www.baeldung.com/java-ee7-converter-listener-validator)
 - [Introduction to JAX-WS](http://www.baeldung.com/jax-ws)
+- [A Guide to Java EE Web-Related Annotations](http://www.baeldung.com/javaee-web-annotations)

jee7/pom.xml

@@ -1,381 +1,381 @@
 <?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>
+	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>jee7</artifactId>
-    <version>1.0-SNAPSHOT</version>
-    <description>JavaEE 7 Arquillian Archetype Sample</description>
+	<groupId>com.baeldung</groupId>
+	<artifactId>jee7</artifactId>
+	<version>1.0-SNAPSHOT</version>
+	<description>JavaEE 7 Arquillian Archetype Sample</description>
 
-    <parent>
-        <groupId>com.baeldung</groupId>
-        <artifactId>parent-modules</artifactId>
-        <version>1.0.0-SNAPSHOT</version>
-     </parent>
+	<parent>
+		<groupId>com.baeldung</groupId>
+		<artifactId>parent-modules</artifactId>
+		<version>1.0.0-SNAPSHOT</version>
+	</parent>
 
-    <properties>
-        <java.min.version>1.8</java.min.version>
-        <maven.min.version>3.0.0</maven.min.version>
+	<properties>
+		<java.min.version>1.8</java.min.version>
+		<maven.min.version>3.0.0</maven.min.version>
 
-        <javaee_api.version>7.0</javaee_api.version>
-        <arquillian_core.version>1.1.11.Final</arquillian_core.version>
-        <wildfly.version>8.2.1.Final</wildfly.version>
-        <awaitility.version>1.7.0</awaitility.version>
-        <undertow-websockets-jsr.version>1.4.6.Final</undertow-websockets-jsr.version>
-        <resteasy.version>3.0.19.Final</resteasy.version>
-        <glassfish-embedded-all.version>4.1.1</glassfish-embedded-all.version>
-        <javax.json.version>1.0.4</javax.json.version>
-        <tyrus.version>1.13</tyrus.version>
-        <jersey.version>2.25</jersey.version>
-        <arquillian-glassfish.version>1.0.0.Final</arquillian-glassfish.version>
+		<javaee_api.version>7.0</javaee_api.version>
+		<arquillian_core.version>1.1.11.Final</arquillian_core.version>
+		<wildfly.version>8.2.1.Final</wildfly.version>
+		<awaitility.version>1.7.0</awaitility.version>
+		<undertow-websockets-jsr.version>1.4.6.Final</undertow-websockets-jsr.version>
+		<resteasy.version>3.0.19.Final</resteasy.version>
+		<glassfish-embedded-all.version>4.1.1</glassfish-embedded-all.version>
+		<javax.json.version>1.0.4</javax.json.version>
+		<tyrus.version>1.13</tyrus.version>
+		<jersey.version>2.25</jersey.version>
+		<arquillian-glassfish.version>1.0.0.Final</arquillian-glassfish.version>
 
-        <maven-war-plugin.version>2.6</maven-war-plugin.version>
-    </properties>
+		<maven-war-plugin.version>2.6</maven-war-plugin.version>
+	</properties>
 
-    <prerequisites>
-        <maven>${maven.min.version}</maven>
-    </prerequisites>
+	<prerequisites>
+		<maven>${maven.min.version}</maven>
+	</prerequisites>
 
-    <dependencyManagement>
-        <dependencies>
-            <dependency>
-                <groupId>org.jboss.arquillian</groupId>
-                <artifactId>arquillian-bom</artifactId>
-                <version>${arquillian_core.version}</version>
-                <scope>import</scope>
-                <type>pom</type>
-            </dependency>
-	        <dependency>
-	            <groupId>org.jboss.arquillian.extension</groupId>
-	            <artifactId>arquillian-drone-bom</artifactId>
-	            <version>2.0.1.Final</version>
-	            <type>pom</type>
-	            <scope>import</scope>
-	        </dependency>            
-        </dependencies>
-    </dependencyManagement>
+	<dependencyManagement>
+		<dependencies>
+			<dependency>
+				<groupId>org.jboss.arquillian</groupId>
+				<artifactId>arquillian-bom</artifactId>
+				<version>${arquillian_core.version}</version>
+				<scope>import</scope>
+				<type>pom</type>
+			</dependency>
+			<dependency>
+				<groupId>org.jboss.arquillian.extension</groupId>
+				<artifactId>arquillian-drone-bom</artifactId>
+				<version>2.0.1.Final</version>
+				<type>pom</type>
+				<scope>import</scope>
+			</dependency>
+		</dependencies>
+	</dependencyManagement>
 
-    <dependencies>
-        <dependency>
-            <groupId>javax</groupId>
-            <artifactId>javaee-api</artifactId>
-            <version>${javaee_api.version}</version>
-            <scope>provided</scope>
-        </dependency>
-
-        <dependency>
-            <groupId>org.jboss.arquillian.junit</groupId>
-            <artifactId>arquillian-junit-container</artifactId>
-            <scope>test</scope>
-        </dependency>
+	<dependencies>
 		<dependency>
-		    <groupId>org.jboss.arquillian.graphene</groupId>
-		    <artifactId>graphene-webdriver</artifactId>
-		    <version>2.1.0.Final</version>
-		    <type>pom</type>
-		    <scope>test</scope>
-		</dependency>        
-        <dependency>
-            <groupId>com.jayway.awaitility</groupId>
-            <artifactId>awaitility</artifactId>
-            <version>${awaitility.version}</version>
-            <scope>test</scope>
-        </dependency>
+			<groupId>javax</groupId>
+			<artifactId>javaee-api</artifactId>
+			<version>${javaee_api.version}</version>
+			<scope>provided</scope>
+		</dependency>
 
-        <dependency>
-            <groupId>org.jboss.shrinkwrap.resolver</groupId>
-            <artifactId>shrinkwrap-resolver-impl-maven</artifactId>
-            <scope>test</scope>
-            <type>jar</type>
-        </dependency>
-
-        <dependency>
-            <groupId>org.jboss.shrinkwrap.resolver</groupId>
-            <artifactId>shrinkwrap-resolver-impl-maven-archive</artifactId>
-            <scope>test</scope>
-        </dependency>
-		    <dependency>
-		        <groupId>org.apache.httpcomponents</groupId>
-		        <artifactId>httpclient</artifactId>
-		        <version>4.5</version>
-		    </dependency>		
-		    <dependency>
-		        <groupId>commons-io</groupId>
-		        <artifactId>commons-io</artifactId>
-		        <version>2.4</version>
-		    </dependency>        
-        <dependency>
-            <groupId>com.sun.faces</groupId>
-            <artifactId>jsf-api</artifactId>
-            <version>2.2.14</version>
-        </dependency>
-        <dependency>
-            <groupId>com.sun.faces</groupId>
-            <artifactId>jsf-impl</artifactId>
-            <version>2.2.14</version>
-        </dependency>
-        <dependency>
-            <groupId>javax.servlet</groupId>
-            <artifactId>jstl</artifactId>
-            <version>1.2</version>
-        </dependency>
-        <dependency>
-            <groupId>javax.servlet</groupId>
-            <artifactId>javax.servlet-api</artifactId>
-            <version>3.1.0</version>
-        </dependency>
 		<dependency>
-		  <groupId>javax.servlet.jsp</groupId>
-		  <artifactId>jsp-api</artifactId>
-		  <version>2.2</version>
-		  <scope>provided</scope>
+			<groupId>org.jboss.arquillian.junit</groupId>
+			<artifactId>arquillian-junit-container</artifactId>
+			<scope>test</scope>
 		</dependency>
 		<dependency>
-		  <groupId>taglibs</groupId>
-		  <artifactId>standard</artifactId>
-		  <version>1.1.2</version>
-		</dependency>		
-    </dependencies>
+			<groupId>org.jboss.arquillian.graphene</groupId>
+			<artifactId>graphene-webdriver</artifactId>
+			<version>2.1.0.Final</version>
+			<type>pom</type>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>com.jayway.awaitility</groupId>
+			<artifactId>awaitility</artifactId>
+			<version>${awaitility.version}</version>
+			<scope>test</scope>
+		</dependency>
 
-    <build>
-        <plugins>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-war-plugin</artifactId>
-                <version>${maven-war-plugin.version}</version>
-                <configuration>
-                    <failOnMissingWebXml>false</failOnMissingWebXml>
-                </configuration>
-            </plugin>
-        </plugins>
-    </build>
+		<dependency>
+			<groupId>org.jboss.shrinkwrap.resolver</groupId>
+			<artifactId>shrinkwrap-resolver-impl-maven</artifactId>
+			<scope>test</scope>
+			<type>jar</type>
+		</dependency>
 
-    <profiles>
+		<dependency>
+			<groupId>org.jboss.shrinkwrap.resolver</groupId>
+			<artifactId>shrinkwrap-resolver-impl-maven-archive</artifactId>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.apache.httpcomponents</groupId>
+			<artifactId>httpclient</artifactId>
+			<version>4.5</version>
+		</dependency>
+		<dependency>
+			<groupId>commons-io</groupId>
+			<artifactId>commons-io</artifactId>
+			<version>2.4</version>
+		</dependency>
+		<dependency>
+			<groupId>com.sun.faces</groupId>
+			<artifactId>jsf-api</artifactId>
+			<version>2.2.14</version>
+		</dependency>
+		<dependency>
+			<groupId>com.sun.faces</groupId>
+			<artifactId>jsf-impl</artifactId>
+			<version>2.2.14</version>
+		</dependency>
+		<dependency>
+			<groupId>javax.servlet</groupId>
+			<artifactId>jstl</artifactId>
+			<version>1.2</version>
+		</dependency>
+		<dependency>
+			<groupId>javax.servlet</groupId>
+			<artifactId>javax.servlet-api</artifactId>
+			<version>3.1.0</version>
+		</dependency>
+		<dependency>
+			<groupId>javax.servlet.jsp</groupId>
+			<artifactId>jsp-api</artifactId>
+			<version>2.2</version>
+			<scope>provided</scope>
+		</dependency>
+		<dependency>
+			<groupId>taglibs</groupId>
+			<artifactId>standard</artifactId>
+			<version>1.1.2</version>
+		</dependency>
+	</dependencies>
 
-        <profile>
-            <id>wildfly-managed-arquillian</id>
-            <activation>
-                <activeByDefault>true</activeByDefault>
-            </activation>
-            <properties>
-                <serverProfile>standalone-full.xml</serverProfile>
-                <serverRoot>${project.build.directory}/wildfly-${version.wildfly}</serverRoot>
-            </properties>
-            <dependencies>
-                <dependency>
-                    <groupId>io.undertow</groupId>
-                    <artifactId>undertow-websockets-jsr</artifactId>
-                    <version>${undertow-websockets-jsr.version}</version>
-                    <scope>test</scope>
-                </dependency>
-                <dependency>
-                    <groupId>org.jboss.resteasy</groupId>
-                    <artifactId>resteasy-client</artifactId>
-                    <version>${resteasy.version}</version>
-                    <scope>test</scope>
-                </dependency>
-                <dependency>
-                    <groupId>org.jboss.resteasy</groupId>
-                    <artifactId>resteasy-jaxb-provider</artifactId>
-                    <version>${resteasy.version}</version>
-                    <scope>test</scope>
-                </dependency>
-                <dependency>
-                    <groupId>org.jboss.resteasy</groupId>
-                    <artifactId>resteasy-json-p-provider</artifactId>
-                    <version>${resteasy.version}</version>
-                    <scope>test</scope>
-                </dependency>
-                <dependency>
-                    <groupId>org.wildfly</groupId>
-                    <artifactId>wildfly-arquillian-container-managed</artifactId>
-                    <version>${wildfly.version}</version>
-                    <scope>test</scope>
-                </dependency>
-            </dependencies>
-            <build>
-	            <pluginManagement>
-                <plugins>
-                    <plugin>
-                        <artifactId>maven-dependency-plugin</artifactId>
-                        <version>2.8</version>
-                        <configuration>
-                            <skip>${maven.test.skip}</skip>
-                        </configuration>
-                        <executions>
-                            <execution>
-                                <id>unpack</id>
-                                <phase>process-test-classes</phase>
-                                <goals>
-                                    <goal>unpack</goal>
-                                </goals>
-                                <configuration>
-                                    <artifactItems>
-                                        <artifactItem>
-                                            <groupId>org.wildfly</groupId>
-                                            <artifactId>wildfly-dist</artifactId>
-                                            <version>${wildfly.version}</version>
-                                            <type>zip</type>
-                                            <overWrite>false</overWrite>
-                                            <outputDirectory>${project.build.directory}</outputDirectory>
-                                        </artifactItem>
-                                    </artifactItems>
-                                </configuration>
-                            </execution>
-                        </executions>
-                    </plugin>
-                    <plugin>
-                        <artifactId>maven-surefire-plugin</artifactId>
-                        <version>2.17</version>
-                        <configuration>
-                            <environmentVariables>
-                                <JBOSS_HOME>${project.build.directory}/wildfly-${wildfly.version}</JBOSS_HOME>
-                            </environmentVariables>
-                        </configuration>
-                    </plugin>
-                </plugins>
-                </pluginManagement>
-            </build>
-        </profile>
-        <profile>
-            <id>wildfly-remote-arquillian</id>
-            <dependencies>
-                <dependency>
-                    <groupId>io.undertow</groupId>
-                    <artifactId>undertow-websockets-jsr</artifactId>
-                    <version>${undertow-websockets-jsr.version}</version>
-                    <scope>test</scope>
-                </dependency>
-                <dependency>
-                    <groupId>org.jboss.resteasy</groupId>
-                    <artifactId>resteasy-client</artifactId>
-                    <version>${resteasy.version}</version>
-                    <scope>test</scope>
-                </dependency>
-                <dependency>
-                    <groupId>org.jboss.resteasy</groupId>
-                    <artifactId>resteasy-jaxb-provider</artifactId>
-                    <version>${resteasy.version}</version>
-                    <scope>test</scope>
-                </dependency>
-                <dependency>
-                    <groupId>org.jboss.resteasy</groupId>
-                    <artifactId>resteasy-json-p-provider</artifactId>
-                    <version>${resteasy.version}</version>
-                    <scope>test</scope>
-                </dependency>
-                <dependency>
-                    <groupId>org.wildfly</groupId>
-                    <artifactId>wildfly-arquillian-container-remote</artifactId>
-                    <version>${wildfly.version}</version>
-                    <scope>test</scope>
-                </dependency>
-            </dependencies>
-        </profile>
-        <profile>
-            <id>glassfish-embedded-arquillian</id>
-            <dependencies>
-                <dependency>
-                    <groupId>org.glassfish.main.extras</groupId>
-                    <artifactId>glassfish-embedded-all</artifactId>
-                    <version>${glassfish-embedded-all.version}</version>
-                    <scope>test</scope>
-                </dependency>
-                <dependency>
-                    <groupId>org.glassfish</groupId>
-                    <artifactId>javax.json</artifactId>
-                    <version>${javax.json.version}</version>
-                    <scope>test</scope>
-                </dependency>
-                <dependency>
-                    <groupId>org.glassfish.tyrus</groupId>
-                    <artifactId>tyrus-client</artifactId>
-                    <version>${tyrus.version}</version>
-                    <scope>test</scope>
-                </dependency>
-                <dependency>
-                    <groupId>org.glassfish.tyrus</groupId>
-                    <artifactId>tyrus-container-grizzly-client</artifactId>
-                    <version>${tyrus.version}</version>
-                    <scope>test</scope>
-                </dependency>
-                <dependency>
-                    <groupId>org.glassfish.jersey.core</groupId>
-                    <artifactId>jersey-client</artifactId>
-                    <version>${jersey.version}</version>
-                    <scope>test</scope>
-                </dependency>
-                <dependency>
-                    <groupId>org.jboss.arquillian.container</groupId>
-                    <artifactId>arquillian-glassfish-embedded-3.1</artifactId>
-                    <version>${arquillian-glassfish.version}</version>
-                    <scope>test</scope>
-                </dependency>
-            </dependencies>
-        </profile>
-        <profile>
-            <id>glassfish-remote-arquillian</id>
-            <dependencies>
-                <dependency>
-                    <groupId>org.glassfish</groupId>
-                    <artifactId>javax.json</artifactId>
-                    <version>${javax.json.version}</version>
-                    <scope>test</scope>
-                </dependency>
-                <dependency>
-                    <groupId>org.glassfish.tyrus</groupId>
-                    <artifactId>tyrus-client</artifactId>
-                    <version>${tyrus.version}</version>
-                    <scope>test</scope>
-                </dependency>
-                <dependency>
-                    <groupId>org.glassfish.tyrus</groupId>
-                    <artifactId>tyrus-container-grizzly-client</artifactId>
-                    <version>${tyrus.version}</version>
-                    <scope>test</scope>
-                </dependency>
-                <dependency>
-                    <groupId>org.glassfish.jersey.core</groupId>
-                    <artifactId>jersey-client</artifactId>
-                    <version>${jersey.version}</version>
-                    <scope>test</scope>
-                </dependency>
-                <dependency>
-                    <groupId>org.glassfish.jersey.media</groupId>
-                    <artifactId>jersey-media-json-jackson</artifactId>
-                    <version>${jersey.version}</version>
-                    <scope>test</scope>
-                </dependency>
-                <dependency>
-                    <groupId>org.glassfish.jersey.media</groupId>
-                    <artifactId>jersey-media-json-processing</artifactId>
-                    <version>${jersey.version}</version>
-                    <scope>test</scope>
-                </dependency>
-                <dependency>
-                    <groupId>org.jboss.arquillian.container</groupId>
-                    <artifactId>arquillian-glassfish-remote-3.1</artifactId>
-                    <version>${arquillian-glassfish.version}</version>
-                    <scope>test</scope>
-                </dependency>
-            </dependencies>
-        </profile>
-        <profile>
-            <id>webdriver-chrome</id>
-            <activation>
-                <activeByDefault>true</activeByDefault>
-            </activation>
-            <properties>
-                <browser>chrome</browser>
-            </properties>
-        </profile>
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-war-plugin</artifactId>
+				<version>${maven-war-plugin.version}</version>
+				<configuration>
+					<failOnMissingWebXml>false</failOnMissingWebXml>
+				</configuration>
+			</plugin>
+		</plugins>
+	</build>
 
-        <profile>
-            <id>webdriver-firefox</id>
-            <properties>
-                <browser>firefox</browser>
-            </properties>
+	<profiles>
+
+		<profile>
+			<id>wildfly-managed-arquillian</id>
+			<activation>
+				<activeByDefault>true</activeByDefault>
+			</activation>
+			<properties>
+				<serverProfile>standalone-full.xml</serverProfile>
+				<serverRoot>${project.build.directory}/wildfly-${version.wildfly}</serverRoot>
+			</properties>
+			<dependencies>
+				<dependency>
+					<groupId>io.undertow</groupId>
+					<artifactId>undertow-websockets-jsr</artifactId>
+					<version>${undertow-websockets-jsr.version}</version>
+					<scope>test</scope>
+				</dependency>
+				<dependency>
+					<groupId>org.jboss.resteasy</groupId>
+					<artifactId>resteasy-client</artifactId>
+					<version>${resteasy.version}</version>
+					<scope>test</scope>
+				</dependency>
+				<dependency>
+					<groupId>org.jboss.resteasy</groupId>
+					<artifactId>resteasy-jaxb-provider</artifactId>
+					<version>${resteasy.version}</version>
+					<scope>test</scope>
+				</dependency>
+				<dependency>
+					<groupId>org.jboss.resteasy</groupId>
+					<artifactId>resteasy-json-p-provider</artifactId>
+					<version>${resteasy.version}</version>
+					<scope>test</scope>
+				</dependency>
+				<dependency>
+					<groupId>org.wildfly</groupId>
+					<artifactId>wildfly-arquillian-container-managed</artifactId>
+					<version>${wildfly.version}</version>
+					<scope>test</scope>
+				</dependency>
+			</dependencies>
+			<build>
+				<pluginManagement>
+					<plugins>
+						<plugin>
+							<artifactId>maven-dependency-plugin</artifactId>
+							<version>2.8</version>
+							<configuration>
+								<skip>${maven.test.skip}</skip>
+							</configuration>
+							<executions>
+								<execution>
+									<id>unpack</id>
+									<phase>process-test-classes</phase>
+									<goals>
+										<goal>unpack</goal>
+									</goals>
+									<configuration>
+										<artifactItems>
+											<artifactItem>
+												<groupId>org.wildfly</groupId>
+												<artifactId>wildfly-dist</artifactId>
+												<version>${wildfly.version}</version>
+												<type>zip</type>
+												<overWrite>false</overWrite>
+												<outputDirectory>${project.build.directory}</outputDirectory>
+											</artifactItem>
+										</artifactItems>
+									</configuration>
+								</execution>
+							</executions>
+						</plugin>
+						<plugin>
+							<artifactId>maven-surefire-plugin</artifactId>
+							<version>2.17</version>
+							<configuration>
+								<environmentVariables>
+									<JBOSS_HOME>${project.build.directory}/wildfly-${wildfly.version}</JBOSS_HOME>
+								</environmentVariables>
+							</configuration>
+						</plugin>
+					</plugins>
+				</pluginManagement>
+			</build>
 		</profile>
-    </profiles>
+		<profile>
+			<id>wildfly-remote-arquillian</id>
+			<dependencies>
+				<dependency>
+					<groupId>io.undertow</groupId>
+					<artifactId>undertow-websockets-jsr</artifactId>
+					<version>${undertow-websockets-jsr.version}</version>
+					<scope>test</scope>
+				</dependency>
+				<dependency>
+					<groupId>org.jboss.resteasy</groupId>
+					<artifactId>resteasy-client</artifactId>
+					<version>${resteasy.version}</version>
+					<scope>test</scope>
+				</dependency>
+				<dependency>
+					<groupId>org.jboss.resteasy</groupId>
+					<artifactId>resteasy-jaxb-provider</artifactId>
+					<version>${resteasy.version}</version>
+					<scope>test</scope>
+				</dependency>
+				<dependency>
+					<groupId>org.jboss.resteasy</groupId>
+					<artifactId>resteasy-json-p-provider</artifactId>
+					<version>${resteasy.version}</version>
+					<scope>test</scope>
+				</dependency>
+				<dependency>
+					<groupId>org.wildfly</groupId>
+					<artifactId>wildfly-arquillian-container-remote</artifactId>
+					<version>${wildfly.version}</version>
+					<scope>test</scope>
+				</dependency>
+			</dependencies>
+		</profile>
+		<profile>
+			<id>glassfish-embedded-arquillian</id>
+			<dependencies>
+				<dependency>
+					<groupId>org.glassfish.main.extras</groupId>
+					<artifactId>glassfish-embedded-all</artifactId>
+					<version>${glassfish-embedded-all.version}</version>
+					<scope>test</scope>
+				</dependency>
+				<dependency>
+					<groupId>org.glassfish</groupId>
+					<artifactId>javax.json</artifactId>
+					<version>${javax.json.version}</version>
+					<scope>test</scope>
+				</dependency>
+				<dependency>
+					<groupId>org.glassfish.tyrus</groupId>
+					<artifactId>tyrus-client</artifactId>
+					<version>${tyrus.version}</version>
+					<scope>test</scope>
+				</dependency>
+				<dependency>
+					<groupId>org.glassfish.tyrus</groupId>
+					<artifactId>tyrus-container-grizzly-client</artifactId>
+					<version>${tyrus.version}</version>
+					<scope>test</scope>
+				</dependency>
+				<dependency>
+					<groupId>org.glassfish.jersey.core</groupId>
+					<artifactId>jersey-client</artifactId>
+					<version>${jersey.version}</version>
+					<scope>test</scope>
+				</dependency>
+				<dependency>
+					<groupId>org.jboss.arquillian.container</groupId>
+					<artifactId>arquillian-glassfish-embedded-3.1</artifactId>
+					<version>${arquillian-glassfish.version}</version>
+					<scope>test</scope>
+				</dependency>
+			</dependencies>
+		</profile>
+		<profile>
+			<id>glassfish-remote-arquillian</id>
+			<dependencies>
+				<dependency>
+					<groupId>org.glassfish</groupId>
+					<artifactId>javax.json</artifactId>
+					<version>${javax.json.version}</version>
+					<scope>test</scope>
+				</dependency>
+				<dependency>
+					<groupId>org.glassfish.tyrus</groupId>
+					<artifactId>tyrus-client</artifactId>
+					<version>${tyrus.version}</version>
+					<scope>test</scope>
+				</dependency>
+				<dependency>
+					<groupId>org.glassfish.tyrus</groupId>
+					<artifactId>tyrus-container-grizzly-client</artifactId>
+					<version>${tyrus.version}</version>
+					<scope>test</scope>
+				</dependency>
+				<dependency>
+					<groupId>org.glassfish.jersey.core</groupId>
+					<artifactId>jersey-client</artifactId>
+					<version>${jersey.version}</version>
+					<scope>test</scope>
+				</dependency>
+				<dependency>
+					<groupId>org.glassfish.jersey.media</groupId>
+					<artifactId>jersey-media-json-jackson</artifactId>
+					<version>${jersey.version}</version>
+					<scope>test</scope>
+				</dependency>
+				<dependency>
+					<groupId>org.glassfish.jersey.media</groupId>
+					<artifactId>jersey-media-json-processing</artifactId>
+					<version>${jersey.version}</version>
+					<scope>test</scope>
+				</dependency>
+				<dependency>
+					<groupId>org.jboss.arquillian.container</groupId>
+					<artifactId>arquillian-glassfish-remote-3.1</artifactId>
+					<version>${arquillian-glassfish.version}</version>
+					<scope>test</scope>
+				</dependency>
+			</dependencies>
+		</profile>
+		<profile>
+			<id>webdriver-chrome</id>
+			<activation>
+				<activeByDefault>true</activeByDefault>
+			</activation>
+			<properties>
+				<browser>chrome</browser>
+			</properties>
+		</profile>
+
+		<profile>
+			<id>webdriver-firefox</id>
+			<properties>
+				<browser>firefox</browser>
+			</properties>
+		</profile>
+	</profiles>
 </project>

junit5/src/test/java/com/baeldung/DynamicTestsExample.java

@@ -3,7 +3,6 @@ package com.baeldung;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 
-import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
 import java.util.HashMap;
@@ -18,6 +17,9 @@ import org.junit.jupiter.api.DynamicTest;
 import org.junit.jupiter.api.TestFactory;
 import org.junit.jupiter.api.function.ThrowingConsumer;
 
+import com.baeldung.helpers.Employee;
+import com.baeldung.helpers.EmployeeDao;
+
 public class DynamicTestsExample {
 
     @TestFactory
@@ -53,32 +55,12 @@ public class DynamicTestsExample {
 
         // sample input and output
         List<String> inputList =
-            new ArrayList<>(Arrays.asList("www.somedomain.com", "www.anotherdomain.com", "www.yetanotherdomain.com"));
+            Arrays.asList("www.somedomain.com", "www.anotherdomain.com", "www.yetanotherdomain.com");
         List<String> outputList =
-            new ArrayList<>(Arrays.asList("154.174.10.56", "211.152.104.132", "178.144.120.156"));
+            Arrays.asList("154.174.10.56", "211.152.104.132", "178.144.120.156");
 
         // input generator that generates inputs using inputList
-        Iterator<String> inputGenerator = new Iterator<String>() {
-
-            String current;
-            int size = inputList.size();
-            int index = 0;
-            
-            @Override
-            public boolean hasNext() {
-                if(index == size) {
-                    return false;
-                }
-                current = inputList.get(index);
-                index++;
-                return true;
-            }
-
-            @Override
-            public String next() {
-                return current;
-            }
-        };
+        Iterator<String> inputGenerator = inputList.iterator();
 
         // a display name generator that creates a different name based on the input
         Function<String, String> displayNameGenerator = (input) -> "Resolving: " + input;
@@ -111,6 +93,29 @@ public class DynamicTestsExample {
         
     }
 
+    @TestFactory
+    Stream<DynamicTest> dynamicTestsForEmployeeWorkflows() {
+        List<Employee> inputList =
+            Arrays.asList(new Employee(1, "Fred"), new Employee(2), new Employee(3, "John"));
+        
+        EmployeeDao dao = new EmployeeDao();
+        Stream<DynamicTest> saveEmployeeStream = inputList.stream().map(emp -> 
+            DynamicTest.dynamicTest("saveEmployee: " + emp.toString(), () -> {
+            Employee returned = dao.save(emp.getId());
+            assertEquals(returned.getId(), emp.getId());
+        }));
+        
+        Stream<DynamicTest> saveEmployeeWithFirstNameStream 
+            = inputList.stream().filter(emp -> !emp.getFirstName().isEmpty())
+            .map(emp -> DynamicTest.dynamicTest("saveEmployeeWithName" + emp.toString(), () -> {
+            Employee returned = dao.save(emp.getId(), emp.getFirstName());
+            assertEquals(returned.getId(), emp.getId());
+            assertEquals(returned.getFirstName(), emp.getFirstName());
+        }));
+        
+        return Stream.concat(saveEmployeeStream, saveEmployeeWithFirstNameStream);
+    }
+    
     class DomainNameResolver {
         
         private Map<String, String> ipByDomainName = new HashMap<>();

junit5/src/test/java/com/baeldung/helpers/Employee.java

@@ -0,0 +1,38 @@
+package com.baeldung.helpers;
+
+public class Employee {
+
+    private long id;
+    private String firstName;
+
+    public Employee(long id) {
+        this.id = id;
+        this.firstName = "";
+    }
+
+    public Employee(long id, String firstName) {
+        this.id = id;
+        this.firstName = firstName;
+    }
+
+    public long getId() {
+        return id;
+    }
+
+    public void setId(long id) {
+        this.id = id;
+    }
+
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public void setFirstName(String firstName) {
+        this.firstName = firstName;
+    }
+
+    @Override
+    public String toString() {
+        return "Employee [id=" + id + ", firstName=" + firstName + "]";
+    }
+}

junit5/src/test/java/com/baeldung/helpers/EmployeeDao.java

@@ -0,0 +1,16 @@
+package com.baeldung.helpers;
+
+public class EmployeeDao {
+
+    public Employee save(long id) {
+        return new Employee(id);
+    }
+
+    public Employee save(long id, String firstName) {
+        return new Employee(id, firstName);
+    }
+
+    public Employee update(Employee employee) {
+        return employee;
+    }
+}

kotlin/README.md

@@ -5,3 +5,4 @@
 - [Comprehensive Guide to Null Safety in Kotlin](http://www.baeldung.com/kotlin-null-safety)
 - [Kotlin Java Interoperability](http://www.baeldung.com/kotlin-java-interoperability)
 - [Difference Between “==” and “===” in Kotlin]()
+- [Generics in Kotlin](http://www.baeldung.com/kotlin-generics)

libraries/README.md

@@ -9,7 +9,8 @@
 - [Introduction to Apache Flink with Java](http://www.baeldung.com/apache-flink)
 - [Introduction to JSONassert](http://www.baeldung.com/jsonassert)
 - [Intro to JaVer](http://www.baeldung.com/javers)
-
+- [Introduction to Apache Commons Math](http://www.baeldung.com/apache-commons-math)
+- [Intro to JaVer](http://www.baeldung.com/serenity-bdd)
 
 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.
 

libraries/pom.xml

@@ -225,12 +225,7 @@
             <groupId>org.datanucleus</groupId>
             <artifactId>datanucleus-maven-plugin</artifactId>
             <version>5.0.2</version>
-        </dependency>
-        <dependency>
-            <groupId>com.h2database</groupId>
-            <artifactId>h2</artifactId>
-            <version>1.4.194</version>
-        </dependency>
+	    </dependency>
         <dependency>
             <groupId>org.datanucleus</groupId>
             <artifactId>datanucleus-xml</artifactId>
@@ -269,6 +264,28 @@
             <artifactId>h2</artifactId>
             <version>1.4.195</version>
         </dependency>
+        <dependency>
+    		    <groupId>pl.pragmatists</groupId>
+		        <artifactId>JUnitParams</artifactId>
+			      <version>${jUnitParams.version}</version>
+			      <scope>test</scope>
+		    </dependency>
+        <dependency>
+            <groupId>org.quartz-scheduler</groupId>
+            <artifactId>quartz</artifactId>
+            <version>2.3.0</version>
+        </dependency>
+
+        <dependency>
+            <groupId>one.util</groupId>
+            <artifactId>streamex</artifactId>
+            <version>0.6.5</version>
+        </dependency>
+        <dependency>
+            <groupId>org.jooq</groupId>
+            <artifactId>jool</artifactId>
+            <version>0.9.12</version>
+        </dependency>
     </dependencies>
     <properties>
         <multiverse.version>0.7.0</multiverse.version>
@@ -292,6 +309,7 @@
         <serenity.jbehave.version>1.24.0</serenity.jbehave.version>
         <serenity.jira.version>1.1.3-rc.5</serenity.jira.version>
         <serenity.plugin.version>1.4.0</serenity.plugin.version>
+        <jUnitParams.version>1.1.0</jUnitParams.version>
     </properties>
 
 </project>

libraries/src/main/java/com/baeldung/junitparams/SafeAdditionUtil.java

@@ -0,0 +1,15 @@
+package com.baeldung.junitparams;
+
+public class SafeAdditionUtil {
+
+    public int safeAdd(int a, int b) {
+        long result = ((long) a) + b;
+        if (result > Integer.MAX_VALUE) {
+            return Integer.MAX_VALUE;
+        } else if (result < Integer.MIN_VALUE) {
+            return Integer.MIN_VALUE;
+        }
+        return (int) result;
+    }
+
+}

libraries/src/main/java/com/baeldung/quartz/QuartzExample.java

@@ -0,0 +1,42 @@
+package com.baeldung.quartz;
+
+import org.quartz.JobBuilder;
+import org.quartz.JobDetail;
+import org.quartz.Scheduler;
+import org.quartz.SchedulerException;
+import org.quartz.SchedulerFactory;
+import org.quartz.SimpleScheduleBuilder;
+import org.quartz.Trigger;
+import org.quartz.TriggerBuilder;
+import org.quartz.impl.StdSchedulerFactory;
+
+public class QuartzExample {
+
+    public static void main(String args[]) {
+
+        SchedulerFactory schedFact = new StdSchedulerFactory();
+        try {
+
+            Scheduler sched = schedFact.getScheduler();
+
+            JobDetail job = JobBuilder.newJob(SimpleJob.class)
+                .withIdentity("myJob", "group1")
+                .build();
+
+            Trigger trigger = TriggerBuilder.newTrigger()
+                .withIdentity("myTrigger", "group1")
+                .startNow()
+                .withSchedule(SimpleScheduleBuilder.simpleSchedule()
+                    .withIntervalInSeconds(40)
+                    .repeatForever())
+                .build();
+
+            sched.scheduleJob(job, trigger);
+            sched.start();
+
+        } catch (SchedulerException e) {
+            e.printStackTrace();
+        }
+    }
+
+}

libraries/src/main/java/com/baeldung/quartz/SimpleJob.java

@@ -0,0 +1,13 @@
+package com.baeldung.quartz;
+
+import org.quartz.Job;
+import org.quartz.JobExecutionContext;
+import org.quartz.JobExecutionException;
+
+public class SimpleJob implements Job {
+
+    public void execute(JobExecutionContext arg0) throws JobExecutionException {
+        System.out.println("This is a quartz job!");
+    }
+
+}

libraries/src/main/java/com/baeldung/serenity/spring/AdderController.java

@@ -0,0 +1,29 @@
+package com.baeldung.serenity.spring;
+
+import org.springframework.http.MediaType;
+import org.springframework.web.bind.annotation.*;
+
+/**
+ * @author aiet
+ */
+@RequestMapping(value = "/adder", produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
+@RestController
+public class AdderController {
+
+    private AdderService adderService;
+
+    public AdderController(AdderService adderService) {
+        this.adderService = adderService;
+    }
+
+    @GetMapping("/current")
+    public int currentNum() {
+        return adderService.currentBase();
+    }
+
+    @PostMapping
+    public int add(@RequestParam int num) {
+        return adderService.add(num);
+    }
+
+}

libraries/src/main/java/com/baeldung/serenity/spring/AdderService.java

@@ -0,0 +1,25 @@
+package com.baeldung.serenity.spring;
+
+import org.springframework.stereotype.Service;
+
+@Service
+public class AdderService {
+
+    private int num;
+
+    public void baseNum(int base) {
+        this.num = base;
+    }
+
+    public int currentBase() {
+        return num;
+    }
+
+    public int add(int adder) {
+        return this.num + adder;
+    }
+
+    public int accumulate(int adder) {
+        return this.num += adder;
+    }
+}

libraries/src/main/java/com/baeldung/serenity/spring/KonamiCodeController.java

@@ -1,28 +0,0 @@
-package com.baeldung.serenity.spring;
-
-import org.springframework.http.MediaType;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RequestParam;
-import org.springframework.web.bind.annotation.RestController;
-
-/**
- * @author aiet
- */
-@RequestMapping(value = "/konamicode", produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
-@RestController
-public class KonamiCodeController {
-
-    private final String classicCode = "↑↑↓↓←→←→BA";
-
-    @GetMapping("/classic")
-    public String classicCode() {
-        return classicCode;
-    }
-
-    @GetMapping("/cheatable")
-    public boolean cheatCheck(@RequestParam String cheatcode){
-        return classicCode.equals(cheatcode);
-    }
-
-}

libraries/src/main/java/com/baeldung/serenity/spring/KonamiCodeService.java

@@ -1,39 +0,0 @@
-package com.baeldung.serenity.spring;
-
-import org.springframework.stereotype.Service;
-
-/**
- * refer to <a href="https://en.wikipedia.org/wiki/Konami_Code">Konami Code</a>
- */
-@Service
-public class KonamiCodeService {
-
-    private String classicCode = "↑↑↓↓←→←→BA";
-
-    public String getClassicCode() {
-        return classicCode;
-    }
-
-    public void alterClassicCode(String newCode) {
-        classicCode = newCode;
-    }
-
-    public boolean cheatWith(String cheatcode) {
-        if ("↑↑↓↓←→←→BA".equals(cheatcode)) {
-            stageLeft++;
-            return true;
-        }
-        return false;
-    }
-
-    private int stageLeft = 1;
-
-    public void clearStage() {
-        stageLeft = 0;
-    }
-
-    public int stageLeft() {
-        return stageLeft;
-    }
-
-}

libraries/src/main/java/com/baeldung/serenity/spring/KonamiCodeServiceInjectionController.java

@@ -1,41 +0,0 @@
-package com.baeldung.serenity.spring;
-
-import org.springframework.http.MediaType;
-import org.springframework.web.bind.annotation.*;
-
-/**
- * @author aiet
- */
-@RequestMapping(value = "/konamicode", produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
-@RestController
-public class KonamiCodeServiceInjectionController {
-
-    private KonamiCodeService konamiCodeService;
-
-    public KonamiCodeServiceInjectionController(KonamiCodeService konamiCodeService) {
-        this.konamiCodeService = konamiCodeService;
-    }
-
-    @PutMapping("/stages")
-    public void clearStage(@RequestParam String action) {
-        if ("clear".equals(action)) {
-            konamiCodeService.clearStage();
-        }
-    }
-
-    @GetMapping("/classic")
-    public String classicCode() {
-        return konamiCodeService.getClassicCode();
-    }
-
-    @GetMapping("/cheatable")
-    public boolean cheatCheck(@RequestParam String cheatcode) {
-        return konamiCodeService.cheatWith(cheatcode);
-    }
-
-    @GetMapping("/stages")
-    public int stageLeft() {
-        return konamiCodeService.stageLeft();
-    }
-
-}

libraries/src/main/java/com/baeldung/serenity/spring/PlainAdderController.java

@@ -0,0 +1,26 @@
+package com.baeldung.serenity.spring;
+
+import org.apache.commons.lang3.RandomUtils;
+import org.springframework.http.MediaType;
+import org.springframework.web.bind.annotation.*;
+
+/**
+ * @author aiet
+ */
+@RequestMapping(value = "/adder", produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
+@RestController
+public class PlainAdderController {
+
+    private final int currentNumber = RandomUtils.nextInt();
+
+    @GetMapping("/current")
+    public int currentNum() {
+        return currentNumber;
+    }
+
+    @PostMapping
+    public int add(@RequestParam int num) {
+        return currentNumber + num;
+    }
+
+}

libraries/src/test/java/com/baeldung/junitparams/SafeAdditionUtilTest.java

@@ -0,0 +1,55 @@
+package com.baeldung.junitparams;
+
+import static org.junit.Assert.*;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import junitparams.FileParameters;
+import junitparams.JUnitParamsRunner;
+import junitparams.Parameters;
+
+@RunWith(JUnitParamsRunner.class)
+public class SafeAdditionUtilTest {
+
+    private SafeAdditionUtil serviceUnderTest = new SafeAdditionUtil();
+
+    @Test
+    @Parameters({ "1, 2, 3", "-10, 30, 20", "15, -5, 10", "-5, -10, -15" })
+    public void whenCalledWithAnnotationProvidedParams_thenSafeAddAndReturn(int a, int b, int expectedValue) {
+        assertEquals(expectedValue, serviceUnderTest.safeAdd(a, b));
+    }
+
+    @Test
+    @Parameters(method = "parametersToTestAdd")
+    public void whenCalledWithNamedMethod_thendSafeAddAndReturn(int a, int b, int expectedValue) {
+        assertEquals(expectedValue, serviceUnderTest.safeAdd(a, b));
+    }
+
+    private Object[] parametersToTestAdd() {
+        return new Object[] { new Object[] { 1, 2, 3 }, new Object[] { -10, 30, 20 }, new Object[] { Integer.MAX_VALUE, 2, Integer.MAX_VALUE }, new Object[] { Integer.MIN_VALUE, -8, Integer.MIN_VALUE } };
+    }
+
+    @Test
+    @Parameters
+    public void whenCalledWithnoParam_thenLoadByNameSafeAddAndReturn(int a, int b, int expectedValue) {
+        assertEquals(expectedValue, serviceUnderTest.safeAdd(a, b));
+    }
+
+    private Object[] parametersForWhenCalledWithnoParam_thenLoadByNameSafeAddAndReturn() {
+        return new Object[] { new Object[] { 1, 2, 3 }, new Object[] { -10, 30, 20 }, new Object[] { Integer.MAX_VALUE, 2, Integer.MAX_VALUE }, new Object[] { Integer.MIN_VALUE, -8, Integer.MIN_VALUE } };
+    }
+
+    @Test
+    @Parameters(source = TestDataProvider.class)
+    public void whenCalledWithNamedClass_thenSafeAddAndReturn(int a, int b, int expectedValue) {
+        assertEquals(expectedValue, serviceUnderTest.safeAdd(a, b));
+    }
+
+    @Test
+    @FileParameters("src/test/resources/JunitParamsTestParameters.csv")
+    public void whenCalledWithCsvFile_thenSafeAddAndReturn(int a, int b, int expectedValue) {
+        assertEquals(expectedValue, serviceUnderTest.safeAdd(a, b));
+    }
+
+}

libraries/src/test/java/com/baeldung/junitparams/TestDataProvider.java

@@ -0,0 +1,13 @@
+package com.baeldung.junitparams;
+
+public class TestDataProvider {
+
+    public static Object[] provideBasicData() {
+        return new Object[] { new Object[] { 1, 2, 3 }, new Object[] { -10, 30, 20 }, new Object[] { 15, -5, 10 }, new Object[] { -5, -10, -15 } };
+    }
+
+    public static Object[] provideEdgeCaseData() {
+        return new Object[] { new Object[] { Integer.MAX_VALUE, 2, Integer.MAX_VALUE }, new Object[] { Integer.MIN_VALUE, -2, Integer.MIN_VALUE }, };
+    }
+
+}

libraries/src/test/java/com/baeldung/serenity/spring/AdderClassDirtiesContextIntegrationTest.java

@@ -0,0 +1,76 @@
+package com.baeldung.serenity.spring;
+
+import com.baeldung.serenity.spring.steps.AdderServiceSteps;
+import net.serenitybdd.junit.runners.SerenityRunner;
+import net.serenitybdd.junit.spring.integration.SpringIntegrationClassRule;
+import net.thucydides.core.annotations.Steps;
+import org.junit.ClassRule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.Suite;
+import org.springframework.test.annotation.DirtiesContext;
+import org.springframework.test.context.ContextConfiguration;
+
+import static com.baeldung.serenity.spring.RandomNumberUtil.randomInt;
+import static org.springframework.test.annotation.DirtiesContext.ClassMode.AFTER_CLASS;
+
+/**
+ * @author aiet
+ */
+
+@RunWith(Suite.class)
+@Suite.SuiteClasses({
+                      AdderClassDirtiesContextIntegrationTest.DirtiesContextTest.class, AdderClassDirtiesContextIntegrationTest.AnotherDirtiesContextTest.class
+                    })
+public class AdderClassDirtiesContextIntegrationTest {
+
+    @RunWith(SerenityRunner.class)
+    @ContextConfiguration(classes = AdderService.class)
+    public static abstract class Base {
+
+        @Steps AdderServiceSteps adderServiceSteps;
+
+        @ClassRule public static SpringIntegrationClassRule springIntegrationClassRule = new SpringIntegrationClassRule();
+
+        void whenAccumulate_thenSummedUp() {
+            adderServiceSteps.whenAccumulate();
+            adderServiceSteps.summedUp();
+        }
+
+        void whenAdd_thenSumWrong() {
+            adderServiceSteps.whenAdd();
+            adderServiceSteps.sumWrong();
+        }
+
+        void whenAdd_thenSummedUp() {
+            adderServiceSteps.whenAdd();
+            adderServiceSteps.summedUp();
+        }
+
+    }
+
+    @DirtiesContext(classMode = AFTER_CLASS)
+    public static class AnotherDirtiesContextTest extends Base {
+
+        @Test
+        public void givenNumber_whenAdd_thenSumWrong() {
+            super.whenAdd_thenSummedUp(); //expecting zero
+            adderServiceSteps.givenBaseAndAdder(randomInt(), randomInt());
+            super.whenAccumulate_thenSummedUp();
+            super.whenAdd_thenSumWrong();
+        }
+    }
+
+    @DirtiesContext(classMode = AFTER_CLASS)
+    public static class DirtiesContextTest extends Base {
+
+        @Test
+        public void givenNumber_whenAdd_thenSumWrong() {
+            super.whenAdd_thenSummedUp(); //expecting zero
+            adderServiceSteps.givenBaseAndAdder(randomInt(), randomInt());
+            super.whenAccumulate_thenSummedUp();
+            super.whenAdd_thenSumWrong();
+        }
+    }
+
+}

libraries/src/test/java/com/baeldung/serenity/spring/AdderMethodDirtiesContextDependencyWorkaroundIntegrationTest.java

@@ -0,0 +1,54 @@
+package com.baeldung.serenity.spring;
+
+import com.baeldung.serenity.spring.steps.AdderConstructorDependencySteps;
+import net.serenitybdd.junit.runners.SerenityRunner;
+import net.serenitybdd.junit.spring.integration.SpringIntegrationMethodRule;
+import org.junit.Before;
+import org.junit.FixMethodOrder;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.MethodSorters;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.test.annotation.DirtiesContext;
+import org.springframework.test.context.ContextConfiguration;
+
+import static com.baeldung.serenity.spring.RandomNumberUtil.randomInt;
+
+/**
+ * @author aiet
+ */
+@RunWith(SerenityRunner.class)
+@FixMethodOrder(MethodSorters.NAME_ASCENDING)
+@ContextConfiguration(classes = AdderService.class)
+public class AdderMethodDirtiesContextDependencyWorkaroundIntegrationTest {
+
+    private AdderConstructorDependencySteps adderSteps;
+
+    @Autowired private AdderService adderService;
+
+    @Before
+    public void init() {
+        adderSteps = new AdderConstructorDependencySteps(adderService);
+    }
+
+    @Test
+    public void _1_givenNumber_whenAdd_thenSumWrong() {
+        adderSteps.whenAdd();
+        adderSteps.summedUp();
+    }
+
+    @Rule public SpringIntegrationMethodRule springIntegration = new SpringIntegrationMethodRule();
+
+    @DirtiesContext
+    @Test
+    public void _0_givenNumber_whenAddAndAccumulate_thenSummedUp() {
+        adderSteps.givenBaseAndAdder(randomInt(), randomInt());
+        adderSteps.whenAccumulate();
+        adderSteps.summedUp();
+
+        adderSteps.whenAdd();
+        adderSteps.sumWrong();
+    }
+
+}

libraries/src/test/java/com/baeldung/serenity/spring/AdderMethodDirtiesContextInitWorkaroundIntegrationTest.java

@@ -0,0 +1,51 @@
+package com.baeldung.serenity.spring;
+
+import com.baeldung.serenity.spring.steps.AdderServiceSteps;
+import net.serenitybdd.junit.runners.SerenityRunner;
+import net.serenitybdd.junit.spring.integration.SpringIntegrationMethodRule;
+import net.thucydides.core.annotations.Steps;
+import org.junit.Before;
+import org.junit.FixMethodOrder;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.MethodSorters;
+import org.springframework.test.annotation.DirtiesContext;
+import org.springframework.test.context.ContextConfiguration;
+
+import static com.baeldung.serenity.spring.RandomNumberUtil.randomInt;
+
+/**
+ * @author aiet
+ */
+@RunWith(SerenityRunner.class)
+@FixMethodOrder(MethodSorters.NAME_ASCENDING)
+@ContextConfiguration(classes = AdderService.class)
+public class AdderMethodDirtiesContextInitWorkaroundIntegrationTest {
+
+    @Steps private AdderServiceSteps adderServiceSteps;
+
+    @Before
+    public void init() {
+        adderServiceSteps.givenBaseAndAdder(randomInt(), randomInt());
+    }
+
+    @Test
+    public void _1_givenNumber_whenAdd_thenSumWrong() {
+        adderServiceSteps.whenAdd();
+        adderServiceSteps.summedUp();
+    }
+
+    @Rule public SpringIntegrationMethodRule springIntegration = new SpringIntegrationMethodRule();
+
+    @DirtiesContext
+    @Test
+    public void _0_givenNumber_whenAddAndAccumulate_thenSummedUp() {
+        adderServiceSteps.whenAccumulate();
+        adderServiceSteps.summedUp();
+
+        adderServiceSteps.whenAdd();
+        adderServiceSteps.sumWrong();
+    }
+
+}

libraries/src/test/java/com/baeldung/serenity/spring/AdderMethodDirtiesContextIntegrationTest.java

@@ -0,0 +1,46 @@
+package com.baeldung.serenity.spring;
+
+import com.baeldung.serenity.spring.steps.AdderServiceSteps;
+import net.serenitybdd.junit.runners.SerenityRunner;
+import net.serenitybdd.junit.spring.integration.SpringIntegrationMethodRule;
+import net.thucydides.core.annotations.Steps;
+import org.junit.FixMethodOrder;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.MethodSorters;
+import org.springframework.test.annotation.DirtiesContext;
+import org.springframework.test.context.ContextConfiguration;
+
+import static com.baeldung.serenity.spring.RandomNumberUtil.randomInt;
+
+/**
+ * @author aiet
+ */
+@RunWith(SerenityRunner.class)
+@FixMethodOrder(MethodSorters.NAME_ASCENDING)
+@ContextConfiguration(classes = AdderService.class)
+public class AdderMethodDirtiesContextIntegrationTest {
+
+    @Steps private AdderServiceSteps adderServiceSteps;
+
+    @Test
+    public void _1_givenNumber_whenAdd_thenSumWrong() {
+        adderServiceSteps.whenAdd();
+        adderServiceSteps.sumWrong();
+    }
+
+    @Rule public SpringIntegrationMethodRule springIntegration = new SpringIntegrationMethodRule();
+
+    @DirtiesContext
+    @Test
+    public void _0_givenNumber_whenAddAndAccumulate_thenSummedUp() {
+        adderServiceSteps.givenBaseAndAdder(randomInt(), randomInt());
+        adderServiceSteps.whenAccumulate();
+        adderServiceSteps.summedUp();
+
+        adderServiceSteps.whenAdd();
+        adderServiceSteps.sumWrong();
+    }
+
+}

libraries/src/test/java/com/baeldung/serenity/spring/AdderMethodRuleIntegrationTest.java

@@ -0,0 +1,59 @@
+package com.baeldung.serenity.spring;
+
+import com.baeldung.serenity.spring.steps.AdderSteps;
+import net.serenitybdd.junit.runners.SerenityRunner;
+import net.serenitybdd.junit.spring.integration.SpringIntegrationMethodRule;
+import net.thucydides.core.annotations.Steps;
+import org.junit.*;
+import org.junit.runner.RunWith;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.test.context.ContextConfiguration;
+
+/**
+ * Unit test for simple App.
+ */
+@RunWith(SerenityRunner.class)
+@ContextConfiguration(locations = "classpath:adder-beans.xml")
+public class AdderMethodRuleIntegrationTest {
+
+    private static Logger LOG = LoggerFactory.getLogger(AdderMethodRuleIntegrationTest.class);
+
+    @BeforeClass
+    public static void initClass() {
+        LOG.info("static adder before test class: {}", staticAdder);
+    }
+
+    @AfterClass
+    public static void destroyClass() {
+        LOG.info("static adder after test class: {}", staticAdder);
+    }
+
+    @Before
+    public void init() {
+        LOG.info("adder before test: {}", adder);
+        staticAdder = adder;
+    }
+
+    @After
+    public void destroy() {
+        LOG.info("adder after test: {}", adder);
+    }
+
+    @Rule public SpringIntegrationMethodRule springMethodIntegration = new SpringIntegrationMethodRule();
+
+    @Steps private AdderSteps adderSteps;
+
+    @Value("#{props['adder']}") private int adder;
+
+    private static int staticAdder;
+
+    @Test
+    public void givenNumber_whenAdd_thenSummedUp() {
+        adderSteps.givenNumber();
+        adderSteps.whenAdd(adder);
+        adderSteps.thenSummedUp();
+    }
+
+}

libraries/src/test/java/com/baeldung/serenity/spring/AdderMockMvcIntegrationTest.java

@@ -0,0 +1,33 @@
+package com.baeldung.serenity.spring;
+
+import com.baeldung.serenity.spring.steps.AdderRestSteps;
+import io.restassured.module.mockmvc.RestAssuredMockMvc;
+import net.serenitybdd.junit.runners.SerenityRunner;
+import net.thucydides.core.annotations.Steps;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static com.baeldung.serenity.spring.RandomNumberUtil.randomInt;
+
+/**
+ * @author aiet
+ */
+@RunWith(SerenityRunner.class)
+public class AdderMockMvcIntegrationTest {
+
+    @Before
+    public void init() {
+        RestAssuredMockMvc.standaloneSetup(new PlainAdderController());
+    }
+
+    @Steps AdderRestSteps steps;
+
+    @Test
+    public void givenNumber_whenAdd_thenSummedUp() throws Exception {
+        steps.givenCurrentNumber();
+        steps.whenAddNumber(randomInt());
+        steps.thenSummedUp();
+    }
+
+}

libraries/src/test/java/com/baeldung/serenity/spring/AdderServiceIntegrationTest.java

@@ -0,0 +1,26 @@
+package com.baeldung.serenity.spring;
+
+import com.baeldung.serenity.spring.steps.AdderServiceSteps;
+import net.serenitybdd.junit.runners.SerenityRunner;
+import net.thucydides.core.annotations.Steps;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static com.baeldung.serenity.spring.RandomNumberUtil.randomInt;
+
+/**
+ * @author aiet
+ */
+@RunWith(SerenityRunner.class)
+public class AdderServiceIntegrationTest {
+
+    @Steps private AdderServiceSteps adderServiceSteps;
+
+    @Test
+    public void givenNumber_whenAdd_thenSummedUp() {
+        adderServiceSteps.givenBaseAndAdder(randomInt(), randomInt());
+        adderServiceSteps.whenAdd();
+        adderServiceSteps.summedUp();
+    }
+
+}

libraries/src/test/java/com/baeldung/serenity/spring/AdderSpringSerenityRunnerIntegrationTest.java

@@ -0,0 +1,29 @@
+package com.baeldung.serenity.spring;
+
+import com.baeldung.serenity.spring.steps.AdderSteps;
+import net.serenitybdd.junit.spring.integration.SpringIntegrationSerenityRunner;
+import net.thucydides.core.annotations.Steps;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.test.context.ContextConfiguration;
+
+/**
+ * Unit test for simple App.
+ */
+@RunWith(SpringIntegrationSerenityRunner.class)
+@ContextConfiguration(locations = "classpath:adder-beans.xml")
+public class AdderSpringSerenityRunnerIntegrationTest {
+
+    @Steps private AdderSteps adderSteps;
+
+    @Value("#{props['adder']}") private int adder;
+
+    @Test
+    public void givenNumber_whenAdd_thenSummedUp() {
+        adderSteps.givenNumber();
+        adderSteps.whenAdd(adder);
+        adderSteps.thenSummedUp();
+    }
+
+}

libraries/src/test/java/com/baeldung/serenity/spring/AdderTest.java

@@ -9,14 +9,14 @@ import org.springframework.test.context.ContextConfiguration;
 /**
  * @author aiet
  */
-@ContextConfiguration(classes = { KonamiCodeServiceInjectionController.class, KonamiCodeService.class })
-public class KonamiCodeTest extends SerenityStory {
+@ContextConfiguration(classes = { AdderController.class, AdderService.class })
+public class AdderTest extends SerenityStory {
 
-    @Autowired private KonamiCodeService konamiCodeService;
+    @Autowired private AdderService adderService;
 
     @BeforeStory
     public void init() {
-        RestAssuredMockMvc.standaloneSetup(new KonamiCodeServiceInjectionController(konamiCodeService));
+        RestAssuredMockMvc.standaloneSetup(new AdderController(adderService));
     }
 
 }

libraries/src/test/java/com/baeldung/serenity/spring/KonamCheatClassDirtiesContextIntegrationTest.java

@@ -1,74 +0,0 @@
-package com.baeldung.serenity.spring;
-
-import com.baeldung.serenity.spring.steps.KonamiCodeServiceInjectionSteps;
-import net.serenitybdd.junit.runners.SerenityRunner;
-import net.serenitybdd.junit.spring.integration.SpringIntegrationClassRule;
-import net.thucydides.core.annotations.Steps;
-import net.thucydides.core.annotations.Title;
-import org.junit.ClassRule;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.junit.runners.Suite;
-import org.springframework.test.annotation.DirtiesContext;
-import org.springframework.test.context.ContextConfiguration;
-
-import static org.springframework.test.annotation.DirtiesContext.ClassMode.AFTER_CLASS;
-
-/**
- * @author aiet
- */
-
-@RunWith(Suite.class)
-@Suite.SuiteClasses({
-                      KonamCheatClassDirtiesContextIntegrationTest.DirtiesContextTest.class, KonamCheatClassDirtiesContextIntegrationTest.AnotherDirtiesContextTest.class
-                    })
-public class KonamCheatClassDirtiesContextIntegrationTest {
-
-    @RunWith(SerenityRunner.class)
-    @ContextConfiguration(classes = KonamiCodeService.class)
-    public static abstract class Base {
-
-        @Steps KonamiCodeServiceInjectionSteps cheatSteps;
-
-        @ClassRule public static SpringIntegrationClassRule springIntegrationClassRule = new SpringIntegrationClassRule();
-
-        void hiddenStageShouldBeUnlockedAfterCheating() {
-            fetchAndCheat();
-            cheatSteps.aStageRemains();
-
-            cheatSteps.letsHack();
-
-            fetchAndCheat();
-            cheatSteps.noStageRemains();
-        }
-
-        private void fetchAndCheat() {
-            cheatSteps.gameStageCleared();
-            cheatSteps.fetchLatestCheatcode();
-            cheatSteps.cheatWithLatestcode();
-        }
-
-    }
-
-    @DirtiesContext(classMode = AFTER_CLASS)
-    public static class AnotherDirtiesContextTest extends Base {
-
-        @Test
-        @Title("altering the cheatcode after unlocking would stop others from cheating, not affected by other tests (another)")
-        public void givenGameStageCleared_whenCheat_thenHiddenStageUnlocked() {
-            super.hiddenStageShouldBeUnlockedAfterCheating();
-        }
-    }
-
-    @DirtiesContext(classMode = AFTER_CLASS)
-    public static class DirtiesContextTest extends Base {
-
-        @Test
-        @Title("altering the cheatcode after unlocking would stop others from cheating, not affected by other tests")
-        public void givenGameStageCleared_whenCheat_thenHiddenStageUnlocked() {
-            super.hiddenStageShouldBeUnlockedAfterCheating();
-        }
-    }
-
-
-}

libraries/src/test/java/com/baeldung/serenity/spring/KonamCheatWithDirtyActionIntegrationTest.java

@@ -1,62 +0,0 @@
-package com.baeldung.serenity.spring;
-
-import com.baeldung.serenity.spring.steps.KonamiCodeConstructorDependencySteps;
-import net.serenitybdd.junit.runners.SerenityRunner;
-import net.serenitybdd.junit.spring.integration.SpringIntegrationMethodRule;
-import net.thucydides.core.annotations.Title;
-import org.junit.Before;
-import org.junit.FixMethodOrder;
-import org.junit.Rule;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.junit.runners.MethodSorters;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.test.annotation.DirtiesContext;
-import org.springframework.test.context.ContextConfiguration;
-
-/**
- * @author aiet
- */
-@RunWith(SerenityRunner.class)
-@FixMethodOrder(MethodSorters.NAME_ASCENDING)
-@ContextConfiguration(classes = KonamiCodeService.class)
-public class KonamCheatWithDirtyActionIntegrationTest {
-
-    private KonamiCodeConstructorDependencySteps cheatSteps;
-
-    @Autowired private KonamiCodeService codeService;
-
-    @Before
-    public void init() {
-        cheatSteps = new KonamiCodeConstructorDependencySteps(codeService);
-    }
-
-    @Test
-    @Title("hidden stage should be unlocked after cheating (run in service with dirty action)")
-    public void givenGameStageCleared_whenCheat_thenHiddenStageUnlocked() {
-        fetchCodeAndCheat();
-        cheatSteps.aStageRemains();
-    }
-
-    @Rule public SpringIntegrationMethodRule springIntegration = new SpringIntegrationMethodRule();
-
-    @DirtiesContext
-    @Test
-    @Title("altering the cheatcode after unlocking would stop others from cheating")
-    public void givenGameStageCleared_whenCheatAndHack_thenAnotherCheatFail() {
-        fetchCodeAndCheat();
-        cheatSteps.aStageRemains();
-
-        cheatSteps.letsHack();
-
-        fetchCodeAndCheat();
-        cheatSteps.noStageRemains();
-    }
-
-    private void fetchCodeAndCheat() {
-        cheatSteps.gameStageCleared();
-        cheatSteps.fetchLatestCheatcode();
-        cheatSteps.cheatWithLatestcode();
-    }
-
-}

libraries/src/test/java/com/baeldung/serenity/spring/KonamCheatWithDirtyActionWithImplicitInjectionIntegrationTest.java

@@ -1,54 +0,0 @@
-package com.baeldung.serenity.spring;
-
-import com.baeldung.serenity.spring.steps.KonamiCodeServiceInjectionSteps;
-import net.serenitybdd.junit.runners.SerenityRunner;
-import net.serenitybdd.junit.spring.integration.SpringIntegrationMethodRule;
-import net.thucydides.core.annotations.Steps;
-import net.thucydides.core.annotations.Title;
-import org.junit.FixMethodOrder;
-import org.junit.Rule;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.junit.runners.MethodSorters;
-import org.springframework.test.annotation.DirtiesContext;
-import org.springframework.test.context.ContextConfiguration;
-
-/**
- * @author aiet
- */
-@RunWith(SerenityRunner.class)
-@FixMethodOrder(MethodSorters.NAME_ASCENDING)
-@ContextConfiguration(classes = KonamiCodeService.class)
-public class KonamCheatWithDirtyActionWithImplicitInjectionIntegrationTest {
-
-    @Steps private KonamiCodeServiceInjectionSteps cheatSteps;
-
-    @Test
-    @Title("hidden stage is not unlocked after cheating (cheatcode hacked)")
-    public void givenGameStageCleared_whenCheat_thenCheatFail() {
-        fetchCodeAndCheat();
-        cheatSteps.noStageRemains();
-    }
-
-    private void fetchCodeAndCheat() {
-        cheatSteps.gameStageCleared();
-        cheatSteps.fetchLatestCheatcode();
-        cheatSteps.cheatWithLatestcode();
-    }
-
-    @Rule public SpringIntegrationMethodRule springIntegration = new SpringIntegrationMethodRule();
-
-    @DirtiesContext
-    @Test
-    @Title("altering the cheatcode after unlocking would stop others from cheating")
-    public void givenGameStageCleared_whenCheatAndHack_thenAnotherCheatFail() {
-        fetchCodeAndCheat();
-        cheatSteps.aStageRemains();
-
-        cheatSteps.letsHack();
-
-        fetchCodeAndCheat();
-        cheatSteps.noStageRemains();
-    }
-
-}

libraries/src/test/java/com/baeldung/serenity/spring/KonamCheatWithServiceIntegrationTest.java

@@ -1,27 +0,0 @@
-package com.baeldung.serenity.spring;
-
-import com.baeldung.serenity.spring.steps.KonamiCodeServiceInjectionSteps;
-import net.serenitybdd.junit.runners.SerenityRunner;
-import net.thucydides.core.annotations.Steps;
-import net.thucydides.core.annotations.Title;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-
-/**
- * @author aiet
- */
-@RunWith(SerenityRunner.class)
-public class KonamCheatWithServiceIntegrationTest {
-
-    @Steps private KonamiCodeServiceInjectionSteps cheatSteps;
-
-    @Test
-    @Title("hidden stage should be unlocked after cheating (mockmvc)")
-    public void givenGameStageCleared_whenCheat_thenHiddenStageUnlocked() {
-        cheatSteps.gameStageCleared();
-        cheatSteps.fetchLatestCheatcode();
-        cheatSteps.cheatWithLatestcode();
-        cheatSteps.aStageRemains();
-    }
-
-}

libraries/src/test/java/com/baeldung/serenity/spring/KonamiCheatWithIntegrationMethodRulesIntegrationTest.java

@@ -1,61 +0,0 @@
-package com.baeldung.serenity.spring;
-
-import com.baeldung.serenity.spring.steps.KonamiCheatSteps;
-import net.serenitybdd.junit.runners.SerenityRunner;
-import net.serenitybdd.junit.spring.integration.SpringIntegrationMethodRule;
-import net.thucydides.core.annotations.Steps;
-import net.thucydides.core.annotations.Title;
-import org.junit.*;
-import org.junit.runner.RunWith;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.beans.factory.annotation.Value;
-import org.springframework.test.context.ContextConfiguration;
-
-/**
- * Unit test for simple App.
- */
-@RunWith(SerenityRunner.class)
-@ContextConfiguration(locations = "classpath:konami-cheat-beans.xml")
-public class KonamiCheatWithIntegrationMethodRulesIntegrationTest {
-
-    private static Logger LOG = LoggerFactory.getLogger(KonamiCheatWithIntegrationMethodRulesIntegrationTest.class);
-
-    @BeforeClass
-    public static void initClass() {
-        LOG.info("static chaincode before test class: {}", staticCheatCode);
-    }
-
-    @AfterClass
-    public static void destroyClass() {
-        LOG.info("static chaincode after test class: {}", staticCheatCode);
-    }
-
-    @Before
-    public void init() {
-        staticCheatCode = cheatCode;
-        LOG.info("cheatcode before test: {}", cheatCode);
-    }
-
-    @After
-    public void destroy() {
-        LOG.info("cheatcode after test: {}", cheatCode);
-    }
-
-    @Rule public SpringIntegrationMethodRule springMethodIntegration = new SpringIntegrationMethodRule();
-
-    @Steps private KonamiCheatSteps konamiCheatSteps;
-
-    @Value("#{konami_props['code']}") private String cheatCode;
-
-    private static String staticCheatCode;
-
-    @Test
-    @Title("hidden stage should be unlocked after cheating (rule integration)")
-    public void givenGameStageCleared_whenCheat_thenHiddenStageUnlocked() {
-        konamiCheatSteps.gameStageCleared();
-        konamiCheatSteps.cheatWith(cheatCode);
-        konamiCheatSteps.aStageRemains();
-    }
-
-}

libraries/src/test/java/com/baeldung/serenity/spring/KonamiCheatWithIntegrationRunnerIntegrationTest.java

@@ -1,58 +0,0 @@
-package com.baeldung.serenity.spring;
-
-import com.baeldung.serenity.spring.steps.KonamiCheatSteps;
-import net.serenitybdd.junit.spring.integration.SpringIntegrationSerenityRunner;
-import net.thucydides.core.annotations.Steps;
-import net.thucydides.core.annotations.Title;
-import org.junit.*;
-import org.junit.runner.RunWith;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.beans.factory.annotation.Value;
-import org.springframework.test.context.ContextConfiguration;
-
-/**
- * Unit test for simple App.
- */
-@RunWith(SpringIntegrationSerenityRunner.class)
-@ContextConfiguration(locations = "classpath:konami-cheat-beans.xml")
-public class KonamiCheatWithIntegrationRunnerIntegrationTest {
-
-    private static Logger LOG = LoggerFactory.getLogger(KonamiCheatWithIntegrationRunnerIntegrationTest.class);
-
-    @BeforeClass
-    public static void initClass() {
-        LOG.info("static chaincode before test class: {}", staticCheatCode);
-    }
-
-    @AfterClass
-    public static void destroyClass() {
-        LOG.info("static chaincode after test class: {}", staticCheatCode);
-    }
-
-    @Before
-    public void init() {
-        staticCheatCode = cheatCode;
-        LOG.info("cheatcode before test: {}", cheatCode);
-    }
-
-    @After
-    public void destroy() {
-        LOG.info("cheatcode after test: {}", cheatCode);
-    }
-
-    @Steps private KonamiCheatSteps konamiCheatSteps;
-
-    @Value("#{konami_props['code']}") private String cheatCode;
-
-    private static String staticCheatCode;
-
-    @Test
-    @Title("hidden stage should be unlocked after cheating (with integration runner)")
-    public void givenGameStageCleared_whenCheat_thenHiddenStageUnlocked() {
-        konamiCheatSteps.gameStageCleared();
-        konamiCheatSteps.cheatWith(cheatCode);
-        konamiCheatSteps.aStageRemains();
-    }
-
-}

libraries/src/test/java/com/baeldung/serenity/spring/KonamiCodeMockMvcIntegrationTest.java

@@ -1,31 +0,0 @@
-package com.baeldung.serenity.spring;
-
-import com.baeldung.serenity.spring.steps.KonamiCodeRestSteps;
-import io.restassured.module.mockmvc.RestAssuredMockMvc;
-import net.serenitybdd.junit.runners.SerenityRunner;
-import net.thucydides.core.annotations.Steps;
-import org.junit.Before;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-
-/**
- * @author aiet
- */
-@RunWith(SerenityRunner.class)
-public class KonamiCodeMockMvcIntegrationTest {
-
-    @Before
-    public void init() {
-        RestAssuredMockMvc.standaloneSetup(new KonamiCodeController());
-    }
-
-    @Steps KonamiCodeRestSteps steps;
-
-    @Test
-    public void givenOfficialClassicCheatcode_whenCheat_ThenTheCodeShouldDoTheTrick() throws Exception {
-        steps.givenClassicCheatCode();
-        steps.whenCheat();
-        steps.thenClassicCodeCanDoTheTrick();
-    }
-
-}

libraries/src/test/java/com/baeldung/serenity/spring/RandomNumberUtil.java

@@ -0,0 +1,13 @@
+package com.baeldung.serenity.spring;
+
+import org.apache.commons.lang3.RandomUtils;
+
+/**
+ * @author aiet
+ */
+public class RandomNumberUtil {
+
+    public static int randomInt() {
+        return RandomUtils.nextInt(1, 10);
+    }
+}

libraries/src/test/java/com/baeldung/serenity/spring/steps/AdderConstructorDependencySteps.java

@@ -0,0 +1,44 @@
+package com.baeldung.serenity.spring.steps;
+
+import com.baeldung.serenity.spring.AdderService;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotEquals;
+
+/**
+ * @author aiet
+ */
+public class AdderConstructorDependencySteps {
+
+    private AdderService adderService;
+
+    public AdderConstructorDependencySteps(AdderService adderService) {
+        this.adderService = adderService;
+    }
+
+    private int givenNumber;
+    private int base;
+    private int sum;
+
+    public void givenBaseAndAdder(int base, int adder) {
+        this.base = base;
+        adderService.baseNum(base);
+        this.givenNumber = adder;
+    }
+
+    public void whenAdd() {
+        sum = adderService.add(givenNumber);
+    }
+
+    public void summedUp() {
+        assertEquals(base + givenNumber, sum);
+    }
+
+    public void sumWrong() {
+        assertNotEquals(base + givenNumber, sum);
+    }
+
+    public void whenAccumulate() {
+        sum = adderService.accumulate(givenNumber);
+    }
+}

libraries/src/test/java/com/baeldung/serenity/spring/steps/AdderRestSteps.java

@@ -0,0 +1,46 @@
+package com.baeldung.serenity.spring.steps;
+
+import io.restassured.module.mockmvc.response.MockMvcResponse;
+import net.thucydides.core.annotations.Step;
+
+import java.io.UnsupportedEncodingException;
+
+import static io.restassured.module.mockmvc.RestAssuredMockMvc.given;
+import static org.hamcrest.core.IsEqual.equalTo;
+
+/**
+ * @author aiet
+ */
+public class AdderRestSteps {
+
+    private MockMvcResponse mockMvcResponse;
+    private int currentNum;
+
+    @Step("get the current number")
+    public void givenCurrentNumber() throws UnsupportedEncodingException {
+        currentNum = Integer.valueOf(given()
+          .when()
+          .get("/adder/current")
+          .mvcResult()
+          .getResponse()
+          .getContentAsString());
+    }
+
+    @Step("adding {0}")
+    public void whenAddNumber(int num) {
+        mockMvcResponse = given()
+          .queryParam("num", num)
+          .when()
+          .post("/adder");
+        currentNum += num;
+    }
+
+    @Step("got the sum")
+    public void thenSummedUp() {
+        mockMvcResponse
+          .then()
+          .statusCode(200)
+          .body(equalTo(currentNum + ""));
+    }
+
+}

libraries/src/test/java/com/baeldung/serenity/spring/steps/AdderServiceSteps.java

@@ -0,0 +1,44 @@
+package com.baeldung.serenity.spring.steps;
+
+import com.baeldung.serenity.spring.AdderService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.test.context.ContextConfiguration;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotEquals;
+
+/**
+ * @author aiet
+ */
+@ContextConfiguration(classes = AdderService.class)
+public class AdderServiceSteps {
+
+    @Autowired private AdderService adderService;
+
+    private int givenNumber;
+    private int base;
+    private int sum;
+
+    public void givenBaseAndAdder(int base, int adder) {
+        this.base = base;
+        adderService.baseNum(base);
+        this.givenNumber = adder;
+    }
+
+    public void whenAdd() {
+        sum = adderService.add(givenNumber);
+    }
+
+    public void summedUp() {
+        assertEquals(base + givenNumber, sum);
+    }
+
+    public void sumWrong() {
+        assertNotEquals(base + givenNumber, sum);
+    }
+
+    public void whenAccumulate() {
+        sum = adderService.accumulate(givenNumber);
+    }
+
+}

libraries/src/test/java/com/baeldung/serenity/spring/steps/AdderSteps.java

@@ -0,0 +1,29 @@
+package com.baeldung.serenity.spring.steps;
+
+import net.thucydides.core.annotations.Step;
+
+import static com.baeldung.serenity.spring.RandomNumberUtil.randomInt;
+
+/**
+ * @author aiet
+ */
+public class AdderSteps {
+
+    int currentNumber;
+    int sum;
+
+    @Step("given current number")
+    public void givenNumber() {
+        currentNumber = randomInt();
+    }
+
+    @Step("add up {0}")
+    public void whenAdd(int adder) {
+        sum = currentNumber + adder;
+    }
+
+    @Step("summed up")
+    public void thenSummedUp() {
+    }
+
+}

libraries/src/test/java/com/baeldung/serenity/spring/steps/KonamiCheatSteps.java

@@ -1,25 +0,0 @@
-package com.baeldung.serenity.spring.steps;
-
-import net.thucydides.core.annotations.Step;
-
-import static org.junit.Assert.assertEquals;
-
-/**
- * @author aiet
- */
-public class KonamiCheatSteps {
-
-    @Step("all stages of the game are cleared")
-    public void gameStageCleared() {
-    }
-
-    @Step("input the classic 'Konami Code': {0} ")
-    public void cheatWith(String cheatcode) {
-        assertEquals("cheatcode wrong", "↑↑↓↓←→←→BA", cheatcode);
-    }
-
-    @Step("there is still a stage left")
-    public void aStageRemains() {
-    }
-
-}

libraries/src/test/java/com/baeldung/serenity/spring/steps/KonamiCodeConstructorDependencySteps.java

@@ -1,58 +0,0 @@
-package com.baeldung.serenity.spring.steps;
-
-import com.baeldung.serenity.spring.KonamiCodeService;
-import net.thucydides.core.annotations.Step;
-import org.apache.commons.lang3.RandomStringUtils;
-
-import static org.hamcrest.core.IsEqual.equalTo;
-import static org.junit.Assert.*;
-
-/**
- * @author aiet
- */
-public class KonamiCodeConstructorDependencySteps {
-
-    private String latestCheatcode;
-    private boolean cheatSuccess;
-
-    private KonamiCodeService konamiCodeService;
-
-    public KonamiCodeConstructorDependencySteps(KonamiCodeService konamiCodeService) {
-        this.konamiCodeService = konamiCodeService;
-    }
-
-    @Step("fetch latest cheat code")
-    public void fetchLatestCheatcode() {
-        latestCheatcode = konamiCodeService.getClassicCode();
-    }
-
-    @Step("cheat with latest code")
-    public void cheatWithLatestcode() {
-        cheatSuccess = konamiCodeService.cheatWith(latestCheatcode);
-    }
-
-    @Step("all stages of the game are cleared")
-    public void gameStageCleared() {
-        konamiCodeService.clearStage();
-    }
-
-    @Step("there is still a stage left")
-    public void aStageRemains() {
-        assertTrue("cheatcode wrong", cheatSuccess);
-        assertThat(konamiCodeService.stageLeft(), equalTo(1));
-    }
-
-    //    @Rule public SpringIntegrationMethodRule methodRule = new SpringIntegrationMethodRule();
-
-    //    @DirtiesContext
-    @Step
-    public void letsHack() {
-        konamiCodeService.alterClassicCode(RandomStringUtils.random(4));
-    }
-
-    @Step("there is no stage left")
-    public void noStageRemains() {
-        assertFalse(cheatSuccess);
-        assertThat(konamiCodeService.stageLeft(), equalTo(0));
-    }
-}

libraries/src/test/java/com/baeldung/serenity/spring/steps/KonamiCodeRestSteps.java

@@ -1,68 +0,0 @@
-package com.baeldung.serenity.spring.steps;
-
-import io.restassured.module.mockmvc.response.MockMvcResponse;
-import net.thucydides.core.annotations.Step;
-
-import java.io.UnsupportedEncodingException;
-
-import static io.restassured.module.mockmvc.RestAssuredMockMvc.given;
-import static org.hamcrest.core.IsEqual.equalTo;
-
-/**
- * @author aiet
- */
-public class KonamiCodeRestSteps {
-
-    MockMvcResponse mockMvcResponse;
-    String cheatcode;
-
-    @Step("get the classic cheat code")
-    public void givenClassicCheatCode() throws UnsupportedEncodingException {
-        cheatcode = given()
-          .when()
-          .get("/konamicode/classic")
-          .mvcResult()
-          .getResponse()
-          .getContentAsString();
-    }
-
-    @Step("check if the cheat code works")
-    public void whenCheat() {
-        mockMvcResponse = given()
-          .queryParam("cheatcode", cheatcode)
-          .when()
-          .get("/konamicode/cheatable");
-    }
-
-    @Step("classic cheat code matches")
-    public void thenClassicCodeCanDoTheTrick() {
-        mockMvcResponse
-          .then()
-          .statusCode(200)
-          .body(equalTo("true"));
-    }
-
-    @Step("all stage cleared")
-    public void stageCleared() {
-        given()
-          .queryParam("action", "clear")
-          .when()
-          .put("/konamicode/stages");
-        given()
-          .when()
-          .get("/konamicode/stages")
-          .then()
-          .body(equalTo("0"));
-    }
-
-    @Step("one more stage to play")
-    public void thenMoreStages() {
-        given()
-          .when()
-          .get("/konamicode/stages")
-          .then()
-          .body(equalTo("1"));
-    }
-
-}
-

libraries/src/test/java/com/baeldung/serenity/spring/steps/KonamiCodeServiceInjectionSteps.java

@@ -1,55 +0,0 @@
-package com.baeldung.serenity.spring.steps;
-
-import com.baeldung.serenity.spring.KonamiCodeService;
-import net.thucydides.core.annotations.Step;
-import org.apache.commons.lang3.RandomStringUtils;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.test.context.ContextConfiguration;
-
-import static org.hamcrest.core.IsEqual.equalTo;
-import static org.junit.Assert.*;
-
-/**
- * @author aiet
- */
-@ContextConfiguration(classes = KonamiCodeService.class)
-public class KonamiCodeServiceInjectionSteps {
-
-    private String latestCheatcode;
-    private boolean cheatSuccess;
-
-    @Autowired private KonamiCodeService konamiCodeService;
-
-    @Step("fetch latest cheat code")
-    public void fetchLatestCheatcode() {
-        latestCheatcode = konamiCodeService.getClassicCode();
-    }
-
-    @Step("cheat with latest code")
-    public void cheatWithLatestcode() {
-        cheatSuccess = konamiCodeService.cheatWith(latestCheatcode);
-    }
-
-    @Step("all stages of the game are cleared")
-    public void gameStageCleared() {
-        konamiCodeService.clearStage();
-    }
-
-    @Step("there is still a stage left")
-    public void aStageRemains() {
-        assertTrue("cheatcode wrong", cheatSuccess);
-        assertThat(konamiCodeService.stageLeft(), equalTo(1));
-    }
-
-    @Step("altering default cheat code")
-    public void letsHack() {
-        konamiCodeService.alterClassicCode(RandomStringUtils.random(4));
-    }
-
-    @Step("there is no stage left")
-    public void noStageRemains() {
-        assertFalse(cheatSuccess);
-        assertThat(konamiCodeService.stageLeft(), equalTo(0));
-    }
-
-}

libraries/src/test/java/com/baeldung/serenity/spring/stories/AdderStory.java

@@ -0,0 +1,31 @@
+package com.baeldung.serenity.spring.stories;
+
+import com.baeldung.serenity.spring.steps.AdderRestSteps;
+import net.thucydides.core.annotations.Steps;
+import org.jbehave.core.annotations.Given;
+import org.jbehave.core.annotations.Then;
+import org.jbehave.core.annotations.When;
+
+/**
+ * @author aiet
+ */
+public class AdderStory {
+
+    @Steps AdderRestSteps restSteps;
+
+    @Given("a number")
+    public void givenANumber() throws Exception {
+        restSteps.givenCurrentNumber();
+    }
+
+    @When("I submit another number $num to adder")
+    public void whenISubmitToAdderWithNumber(int num) {
+        restSteps.whenAddNumber(num);
+    }
+
+    @Then("I get a sum of the numbers")
+    public void thenIGetTheSum() {
+        restSteps.thenSummedUp();
+    }
+
+}

libraries/src/test/java/com/baeldung/serenity/spring/stories/KonamiCodeStory.java

@@ -1,37 +0,0 @@
-package com.baeldung.serenity.spring.stories;
-
-import com.baeldung.serenity.spring.steps.KonamiCodeRestSteps;
-import net.thucydides.core.annotations.Steps;
-import org.jbehave.core.annotations.Given;
-import org.jbehave.core.annotations.Then;
-import org.jbehave.core.annotations.When;
-
-/**
- * @author aiet
- */
-public class KonamiCodeStory {
-
-    @Steps KonamiCodeRestSteps restSteps;
-
-    @Given("game stage cleared")
-    public void givenStageCleared(){
-        restSteps.stageCleared();
-    }
-
-    @Given("KONAMI cheat code")
-    public void givenKONAMICheatCode() throws Exception{
-        restSteps.givenClassicCheatCode();
-    }
-
-    @When("I input the cheat code")
-    public void whenIInputTheCheatCode() {
-        restSteps.whenCheat();
-    }
-
-    @Then("a hidden stage will be unlocked")
-    public void thenAHiddenStageWillBeUnlocked() {
-        restSteps.thenClassicCodeCanDoTheTrick();
-        restSteps.thenMoreStages();
-    }
-
-}

libraries/src/test/java/com/baeldung/stream/JoolMergeStreamsTest.java

@@ -0,0 +1,35 @@
+package com.baeldung.stream;
+
+import org.jooq.lambda.Seq;
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.util.Arrays;
+
+import static junit.framework.TestCase.assertEquals;
+
+public class JoolMergeStreamsTest {
+    @Test
+    public void givenTwoStreams_whenMergingStreams_thenResultingStreamContainsElementsFromBothStreams() {
+        Seq<Integer> seq1 = Seq.of(1, 3, 5);
+        Seq<Integer> seq2 = Seq.of(2, 4, 6);
+
+        Seq<Integer> resultingSeq = seq1.append(seq2);
+
+        assertEquals(Arrays.asList(1, 3, 5, 2, 4, 6),
+                     resultingSeq.toList());
+    }
+
+    @Test
+    public void givenThreeStreams_whenAppendingAndPrependingStreams_thenResultingStreamContainsElementsFromAllStreams() {
+        Seq<String> seq = Seq.of("foo", "bar");
+        Seq<String> openingBracketSeq = Seq.of("[");
+        Seq<String> closingBracketSeq = Seq.of("]");
+
+        Seq<String> resultingStream = seq.append(closingBracketSeq)
+                                         .prepend(openingBracketSeq);
+
+        Assert.assertEquals(Arrays.asList("[", "foo", "bar", "]"),
+                            resultingStream.toList());
+    }
+}

libraries/src/test/java/com/baeldung/stream/MergeStreamsTest.java

@@ -0,0 +1,53 @@
+package com.baeldung.stream;
+
+import org.junit.Test;
+
+import java.util.Arrays;
+import java.util.function.Function;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+import static org.junit.Assert.assertEquals;
+
+public class MergeStreamsTest {
+
+    @Test
+    public void givenTwoStreams_whenMergingStreams_thenResultingStreamContainsElementsFromBothStreams() {
+        Stream<Integer> stream1 = Stream.of(1, 3, 5);
+        Stream<Integer> stream2 = Stream.of(2, 4, 6);
+
+        Stream<Integer> resultingStream = Stream.concat(stream1,
+                                                        stream2);
+
+        assertEquals(Arrays.asList(1, 3, 5, 2, 4, 6),
+                     resultingStream.collect(Collectors.toList()));
+    }
+
+    @Test
+    public void givenThreeStreams_whenMergingStreams_thenResultingStreamContainsElementsFromAllStreams() {
+        Stream<Integer> stream1 = Stream.of(1, 3, 5);
+        Stream<Integer> stream2 = Stream.of(2, 4, 6);
+        Stream<Integer> stream3 = Stream.of(18, 15, 36);
+
+        Stream<Integer> resultingStream = Stream.concat(Stream.concat(stream1,
+                                                                      stream2),
+                                                        stream3);
+
+        assertEquals(Arrays.asList(1, 3, 5, 2, 4, 6, 18, 15, 36),
+                     resultingStream.collect(Collectors.toList()));
+    }
+
+    @Test
+    public void givenFourStreams_whenMergingStreams_thenResultingStreamContainsElementsFromAllStreams() {
+        Stream<Integer> stream1 = Stream.of(1, 3, 5);
+        Stream<Integer> stream2 = Stream.of(2, 4, 6);
+        Stream<Integer> stream3 = Stream.of(18, 15, 36);
+        Stream<Integer> stream4 = Stream.of(99);
+
+        Stream<Integer> resultingStream = Stream.of(stream1, stream2, stream3, stream4).flatMap(Function.identity());
+
+        assertEquals(Arrays.asList(1, 3, 5, 2, 4, 6, 18, 15, 36, 99),
+                     resultingStream.collect(Collectors.toList()));
+
+    }
+}

libraries/src/test/java/com/baeldung/stream/StreamExMergeStreamsTest.java

@@ -0,0 +1,51 @@
+package com.baeldung.stream;
+
+import one.util.streamex.StreamEx;
+import org.junit.Test;
+
+import java.util.Arrays;
+
+import static org.junit.Assert.assertEquals;
+
+public class StreamExMergeStreamsTest {
+
+    @Test
+    public void givenTwoStreams_whenMergingStreams_thenResultingStreamContainsElementsFromBothStreams() {
+        StreamEx<Integer> stream1 = StreamEx.of(1, 3, 5);
+        StreamEx<Integer> stream2 = StreamEx.of(2, 4, 6);
+
+        StreamEx<Integer> resultingStream = stream1.append(stream2);
+
+        assertEquals(Arrays.asList(1, 3, 5, 2, 4, 6),
+                     resultingStream.toList());
+    }
+
+    @Test
+    public void givenFourStreams_whenMergingStreams_thenResultingStreamContainsElementsFromAllStreams() {
+        StreamEx<Integer> stream1 = StreamEx.of(1, 3, 5);
+        StreamEx<Integer> stream2 = StreamEx.of(2, 4, 6);
+        StreamEx<Integer> stream3 = StreamEx.of(18, 15, 36);
+        StreamEx<Integer> stream4 = StreamEx.of(99);
+
+        StreamEx<Integer> resultingStream = stream1.append(stream2)
+                                                   .append(stream3)
+                                                   .append(stream4);
+
+        assertEquals(Arrays.asList(1, 3, 5, 2, 4, 6, 18, 15, 36, 99),
+                     resultingStream.toList());
+
+    }
+
+    @Test
+    public void givenThreeStreams_whenAppendingAndPrependingStreams_thenResultingStreamContainsElementsFromAllStreams() {
+        StreamEx<String> stream1 = StreamEx.of("foo", "bar");
+        StreamEx<String> openingBracketStream = StreamEx.of("[");
+        StreamEx<String> closingBracketStream = StreamEx.of("]");
+
+        StreamEx<String> resultingStream = stream1.append(closingBracketStream)
+                                                  .prepend(openingBracketStream);
+
+        assertEquals(Arrays.asList("[", "foo", "bar", "]"),
+                     resultingStream.toList());
+    }
+}

libraries/src/test/resources/JunitParamsTestParameters.csv

@@ -0,0 +1,4 @@
+1,2,3
+-10, 30, 20
+15, -5, 10
+-5, -10, -15

libraries/src/test/resources/adder-beans.xml

@@ -3,11 +3,11 @@
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:util="http://www.springframework.org/schema/util"
        xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd">
 
-    <util:properties id="konami_props">
-        <prop key="code">
-            ↑↑↓↓←→←→BA
+    <util:properties id="props">
+        <prop key="adder">
+            4
         </prop>
-
     </util:properties>
+
 </beans>
 

libraries/src/test/resources/stories/spring/adder_test.story

@@ -0,0 +1,11 @@
+Meta:
+
+Narrative:
+As user
+I want to add a number
+So that I can have the sum
+
+Scenario: A user can submit a number to adder and get current sum
+Given a number
+When I submit another number 5 to adder
+Then I get a sum of the numbers

libraries/src/test/resources/stories/spring/konami_code_test.story

@@ -1,12 +0,0 @@
-Meta:
-
-Narrative:
-As a KONAMI player
-I want to cheat
-So that I can unlock hidden stages of the game
-
-Scenario: A KONAMI player can use the cheatcode to unlock hidden stages
-Given game stage cleared
-And KONAMI cheat code
-When I input the cheat code
-Then a hidden stage will be unlocked