Merge remote-tracking branch 'eugenp/master'

core-java-9/src/test/java/com/baeldung/java9/language/Java9ObjectsAPIUnitTest.java

@@ -0,0 +1,72 @@
+package com.baeldung.java9.language;
+
+import org.junit.Test;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.Objects;
+
+import static org.hamcrest.Matchers.*;
+import static org.hamcrest.MatcherAssert.assertThat;
+
+public class Java9ObjectsAPIUnitTest {
+
+    @Test
+    public void givenNullObject_whenRequireNonNullElse_thenElse(){
+        assertThat(Objects.<List>requireNonNullElse(null, Collections.EMPTY_LIST),
+                is(Collections.EMPTY_LIST));
+    }
+
+    @Test
+    public void givenObject_whenRequireNonNullElse_thenObject(){
+        assertThat(Objects.<List>requireNonNullElse(List.of("item1", "item2"),
+                Collections.EMPTY_LIST), is(List.of("item1", "item2")));
+    }
+
+    @Test
+    public void givenObject_whenRequireNonNullElseGet_thenObject(){
+        assertThat(Objects.<List>requireNonNullElseGet(null, List::of),
+                is(List.of()));
+    }
+
+    @Test
+    public void givenNumber_whenInvokeCheckIndex_thenNumber(){
+        int length = 5;
+
+        assertThat(Objects.checkIndex(4, length), is(4));
+
+        try{
+            Objects.checkIndex(5, length);
+        }catch(Exception ex){
+            assertThat(ex, instanceOf(IndexOutOfBoundsException.class));
+        }
+    }
+
+    @Test
+    public void givenSubRange_whenCheckFromToIndex_thenNumber(){
+        int length = 6;
+
+        assertThat(Objects.checkFromToIndex(2,length,length), is(2));
+
+        try{
+            Objects.checkFromToIndex(2,7,length);
+        }catch(Exception ex){
+            assertThat(ex, instanceOf(IndexOutOfBoundsException.class));
+        }
+    }
+
+    @Test
+    public void giveSubRange_whenCheckFromIndexSize_thenNumber(){
+        int length = 6;
+
+        assertThat(Objects.checkFromToIndex(2,5,length), is(2));
+
+        try{
+            Objects.checkFromToIndex(2,6,length);
+        }catch(Exception ex){
+            assertThat(ex, instanceOf(IndexOutOfBoundsException.class));
+        }
+    }
+
+
+}

junit5/pom.xml

@@ -3,7 +3,7 @@
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
-    <groupId>com.baeldung</groupId>
+    <!-- NOT NEEDED - JSP <groupId>com.baeldung</groupId>-->
     <artifactId>junit5</artifactId>
     <version>1.0-SNAPSHOT</version>
 
@@ -19,9 +19,9 @@
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <java.version>1.8</java.version>
-        <junit.jupiter.version>5.0.0-M5</junit.jupiter.version>
+        <junit.jupiter.version>5.0.0-RC2</junit.jupiter.version>
-        <junit.platform.version>1.0.0-M5</junit.platform.version>
+        <junit.platform.version>1.0.0-RC2</junit.platform.version>
-        <junit.vintage.version>4.12.0-M5</junit.vintage.version>
+        <junit.vintage.version>4.12.0-RC2</junit.vintage.version>
         <log4j2.version>2.8.2</log4j2.version>
         <h2.version>1.4.196</h2.version>
 

junit5/src/test/java/com/baeldung/param/InvalidPersonParameterResolver.java

@@ -0,0 +1,50 @@
+package com.baeldung.param;
+
+import java.util.Random;
+
+import org.junit.jupiter.api.extension.ExtensionContext;
+import org.junit.jupiter.api.extension.ParameterContext;
+import org.junit.jupiter.api.extension.ParameterResolutionException;
+import org.junit.jupiter.api.extension.ParameterResolver;
+
+public class InvalidPersonParameterResolver implements ParameterResolver {
+
+  /**
+   * The "bad" (invalid) data for testing purposes has to go somewhere, right?
+   */
+  public static Person[] INVALID_PERSONS = {
+      new Person().setId(1L).setLastName("Ad_ams").setFirstName("Jill,"),
+      new Person().setId(2L).setLastName(",Baker").setFirstName(""),
+      new Person().setId(3L).setLastName(null).setFirstName(null),
+      new Person().setId(4L).setLastName("Daniel&").setFirstName("{Joseph}"),
+      new Person().setId(5L).setLastName("").setFirstName("English, Jane"),
+      new Person()/* .setId(6L).setLastName("Fontana").setFirstName("Enrique") */,
+      // TODO: ADD MORE DATA HERE
+  };
+
+  @Override
+  public Object resolveParameter(ParameterContext parameterContext, ExtensionContext extensionContext)
+      throws ParameterResolutionException {
+    Object ret = null;
+    //
+    // Return a random, valid Person object if Person.class is the type of Parameter
+    /// to be resolved. Otherwise return null.
+    if (parameterContext.getParameter().getType() == Person.class) {
+      ret = INVALID_PERSONS[new Random().nextInt(INVALID_PERSONS.length)];
+    }
+    return ret;
+  }
+
+  @Override
+  public boolean supportsParameter(ParameterContext parameterContext, ExtensionContext extensionContext)
+      throws ParameterResolutionException {
+    boolean ret = false;
+    //
+    // If the Parameter.type == Person.class, then we support it, otherwise, get outta here!
+    if (parameterContext.getParameter().getType() == Person.class) {
+      ret = true;
+    }
+    return ret;
+  }
+
+}

junit5/src/test/java/com/baeldung/param/Person.java

@@ -0,0 +1,43 @@
+package com.baeldung.param;
+
+/**
+ * Very simple Person entity.
+ * Use the Fluent-style interface to set properties.
+ * 
+ * @author J Steven Perry
+ *
+ */
+public class Person {
+
+  private Long id;
+  private String lastName;
+  private String firstName;
+
+  public Long getId() {
+    return id;
+  }
+
+  public Person setId(Long id) {
+    this.id = id;
+    return this;
+  }
+
+  public String getLastName() {
+    return lastName;
+  }
+
+  public Person setLastName(String lastName) {
+    this.lastName = lastName;
+    return this;
+  }
+
+  public String getFirstName() {
+    return firstName;
+  }
+
+  public Person setFirstName(String firstName) {
+    this.firstName = firstName;
+    return this;
+  }
+
+}

junit5/src/test/java/com/baeldung/param/PersonValidator.java

@@ -0,0 +1,142 @@
+package com.baeldung.param;
+
+import java.util.Arrays;
+
+/**
+ * Somewhat contrived validation class to illustrate unit test
+ * concepts.
+ * 
+ * @author J Steven Perry
+ *
+ */
+public class PersonValidator {
+
+  /**
+   * Contrived checked exception to illustrate one possible
+   * way to handle validation errors (via a checked exception).
+   * 
+   * @author J Steven Perry
+   *
+   */
+  public static class ValidationException extends Exception {
+
+    /**
+     * 
+     */
+    private static final long serialVersionUID = -134518049431883102L;
+
+    // Probably should implement some more constructors, but don't want
+    /// to tarnish the lesson...
+
+    /**
+     * The one and only way to create this checked exception.
+     * 
+     * @param message
+     *          The message accompanying the exception. Should be meaningful.
+     */
+    public ValidationException(String message) {
+      super(message);
+
+    }
+
+  }
+
+  private static final String[] ILLEGAL_NAME_CHARACTERS = {
+      ",",
+      "_",
+      "{",
+      "}",
+      "!"
+  };
+
+  /**
+   * Validate the first name of the specified Person object.
+   * 
+   * @param person
+   *          The Person object to validate.
+   * 
+   * @return - returns true if the specified Person is valid
+   * 
+   * @throws ValidationException
+   *           - this Exception is thrown if any kind of validation error occurs.
+   */
+  public static boolean validateFirstName(Person person) throws ValidationException {
+    boolean ret = true;
+    // The validation rules go here.
+    // Naive: use simple ifs
+    if (person == null) {
+      throw new ValidationException("Person is null (not allowed)!");
+    }
+    if (person.getFirstName() == null) {
+      throw new ValidationException("Person FirstName is null (not allowed)!");
+    }
+    if (person.getFirstName().isEmpty()) {
+      throw new ValidationException("Person FirstName is an empty String (not allowed)!");
+    }
+    if (!isStringValid(person.getFirstName(), ILLEGAL_NAME_CHARACTERS)) {
+      throw new ValidationException(
+          "Person FirstName (" + person.getFirstName() + ") may not contain any of the following characters: "
+              + Arrays.toString(ILLEGAL_NAME_CHARACTERS)
+              + "!");
+    }
+    return ret;
+  }
+
+  /**
+   * Validate the last name of the specified Person object. Looks the same as first
+   * name? Look closer. Just kidding. It's the same. But real world code can (and will) diverge.
+   * 
+   * @param person
+   *          The Person object to validate.
+   * 
+   * @return - returns true if the specified Person is valid
+   * 
+   * @throws ValidationException
+   *           - this Exception is thrown if any kind of validation error occurs.
+   */
+  public static boolean validateLastName(Person person) throws ValidationException {
+    boolean ret = true;
+    // The validation rules go here.
+    // Naive: use simple ifs
+    if (person == null) {
+      throw new ValidationException("Person is null (not allowed)!");
+    }
+    if (person.getFirstName() == null) {
+      throw new ValidationException("Person FirstName is null (not allowed)!");
+    }
+    if (person.getFirstName().isEmpty()) {
+      throw new ValidationException("Person FirstName is an empty String (not allowed)!");
+    }
+    if (!isStringValid(person.getFirstName(), ILLEGAL_NAME_CHARACTERS)) {
+      throw new ValidationException(
+          "Person LastName (" + person.getLastName() + ") may not contain any of the following characters: "
+              + Arrays.toString(ILLEGAL_NAME_CHARACTERS)
+              + "!");
+    }
+    return ret;
+  }
+
+  /**
+   * Validates the specified name. If it contains any of the illegalCharacters,
+   * this method returns false (indicating the name is illegal). Otherwise it returns true.
+   * 
+   * @param candidate
+   *          The candidate String to validate
+   * 
+   * @param illegalCharacters
+   *          The characters the String is not allowed to have
+   * 
+   * @return - boolean - true if the name is valid, false otherwise.
+   */
+  private static boolean isStringValid(String candidate, String[] illegalCharacters) {
+    boolean ret = true;
+    for (String illegalChar : illegalCharacters) {
+      if (candidate.contains(illegalChar)) {
+        ret = false;
+        break;
+      }
+    }
+    return ret;
+  }
+
+}

junit5/src/test/java/com/baeldung/param/PersonValidatorTest.java

@@ -0,0 +1,102 @@
+package com.baeldung.param;
+
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.junit.jupiter.api.Assertions.fail;
+
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Nested;
+import org.junit.jupiter.api.RepeatedTest;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.junit.platform.runner.JUnitPlatform;
+import org.junit.runner.RunWith;
+
+@RunWith(JUnitPlatform.class)
+@DisplayName("Testing PersonValidator")
+public class PersonValidatorTest {
+
+  /**
+   * Nested class, uses ExtendWith
+   * {@link com.baeldung.param.ValidPersonParameterResolver ValidPersonParameterResolver}
+   * to feed Test methods with "good" data.
+   */
+  @Nested
+  @DisplayName("When using Valid data")
+  @ExtendWith(ValidPersonParameterResolver.class)
+  public class ValidData {
+
+    /**
+     * Repeat the test ten times, that way we have a good shot at
+     * running all of the data through at least once.
+     * 
+     * @param person
+     *          A valid Person object to validate.
+     */
+    @RepeatedTest(value = 10)
+    @DisplayName("All first names are valid")
+    public void validateFirstName(Person person) {
+      try {
+        assertTrue(PersonValidator.validateFirstName(person));
+      } catch (PersonValidator.ValidationException e) {
+        fail("Exception not expected: " + e.getLocalizedMessage());
+      }
+    }
+
+    /**
+     * Repeat the test ten times, that way we have a good shot at
+     * running all of the data through at least once.
+     * 
+     * @param person
+     *          A valid Person object to validate.
+     */
+    @RepeatedTest(value = 10)
+    @DisplayName("All last names are valid")
+    public void validateLastName(Person person) {
+      try {
+        assertTrue(PersonValidator.validateLastName(person));
+      } catch (PersonValidator.ValidationException e) {
+        fail("Exception not expected: " + e.getLocalizedMessage());
+      }
+    }
+
+  }
+
+  /**
+   * Nested class, uses ExtendWith
+   * {@link com.baeldung.param.InvalidPersonParameterResolver InvalidPersonParameterResolver}
+   * to feed Test methods with "bad" data.
+   */
+  @Nested
+  @DisplayName("When using Invalid data")
+  @ExtendWith(InvalidPersonParameterResolver.class)
+  public class InvalidData {
+
+    /**
+     * Repeat the test ten times, that way we have a good shot at
+     * running all of the data through at least once.
+     * 
+     * @param person
+     *          An invalid Person object to validate.
+     */
+    @RepeatedTest(value = 10)
+    @DisplayName("All first names are invalid")
+    public void validateFirstName(Person person) {
+      assertThrows(PersonValidator.ValidationException.class, () -> PersonValidator.validateFirstName(person));
+    }
+
+    /**
+     * Repeat the test ten times, that way we have a good shot at
+     * running all of the data through at least once.
+     * 
+     * @param person
+     *          An invalid Person object to validate.
+     */
+    @RepeatedTest(value = 10)
+    @DisplayName("All first names are invalid")
+    public void validateLastName(Person person) {
+      assertThrows(PersonValidator.ValidationException.class, () -> PersonValidator.validateLastName(person));
+    }
+
+  }
+
+}

junit5/src/test/java/com/baeldung/param/ValidPersonParameterResolver.java

@@ -0,0 +1,50 @@
+package com.baeldung.param;
+
+import java.util.Random;
+
+import org.junit.jupiter.api.extension.ExtensionContext;
+import org.junit.jupiter.api.extension.ParameterContext;
+import org.junit.jupiter.api.extension.ParameterResolutionException;
+import org.junit.jupiter.api.extension.ParameterResolver;
+
+public class ValidPersonParameterResolver implements ParameterResolver {
+
+  /**
+   * The "good" (valid) data for testing purposes has to go somewhere, right?
+   */
+  public static Person[] VALID_PERSONS = {
+      new Person().setId(1L).setLastName("Adams").setFirstName("Jill"),
+      new Person().setId(2L).setLastName("Baker").setFirstName("James"),
+      new Person().setId(3L).setLastName("Carter").setFirstName("Samanta"),
+      new Person().setId(4L).setLastName("Daniels").setFirstName("Joseph"),
+      new Person().setId(5L).setLastName("English").setFirstName("Jane"),
+      new Person().setId(6L).setLastName("Fontana").setFirstName("Enrique"),
+      // TODO: ADD MORE DATA HERE
+  };
+
+  @Override
+  public Object resolveParameter(ParameterContext parameterContext, ExtensionContext extensionContext)
+      throws ParameterResolutionException {
+    Object ret = null;
+    //
+    // Return a random, valid Person object if Person.class is the type of Parameter
+    /// to be resolved. Otherwise return null.
+    if (parameterContext.getParameter().getType() == Person.class) {
+      ret = VALID_PERSONS[new Random().nextInt(VALID_PERSONS.length)];
+    }
+    return ret;
+  }
+
+  @Override
+  public boolean supportsParameter(ParameterContext parameterContext, ExtensionContext extensionContext)
+      throws ParameterResolutionException {
+    boolean ret = false;
+    //
+    // If the Parameter.type == Person.class, then we support it, otherwise, get outta here!
+    if (parameterContext.getParameter().getType() == Person.class) {
+      ret = true;
+    }
+    return ret;
+  }
+
+}

libraries/pom.xml

@@ -462,6 +462,11 @@
 			<artifactId>pcollections</artifactId>
 			<version>${pcollections.version}</version>
 		</dependency>
+    <dependency>
+			<groupId>org.eclipse.collections</groupId>
+			<artifactId>eclipse-collections</artifactId>
+			<version>${eclipse-collections.version}</version>
+		</dependency>
 	</dependencies>
 	<properties>
 		<multiverse.version>0.7.0</multiverse.version>
@@ -503,5 +508,6 @@
 		<bytebuddy.version>1.7.1</bytebuddy.version>
 		<pcollections.version>2.1.2</pcollections.version>
 		<rome.version>1.0</rome.version>
+    <eclipse-collections.version>8.2.0</eclipse-collections.version>
 	</properties>
 </project>

libraries/src/main/java/com/baeldung/eclipsecollections/ConvertContainerToAnother.java

@@ -0,0 +1,20 @@
+package com.baeldung.eclipsecollections;
+
+import java.util.List;
+
+import org.eclipse.collections.api.list.MutableList;
+import org.eclipse.collections.impl.set.mutable.UnifiedSet;
+
+public class ConvertContainerToAnother {
+
+    @SuppressWarnings("rawtypes")
+    public static List convertToList() {
+        UnifiedSet<String> cars = new UnifiedSet<>();
+
+        cars.add("Toyota");
+        cars.add("Mercedes");
+        cars.add("Volkswagen");
+
+        return cars.toList();
+    }
+}

libraries/src/main/java/com/baeldung/eclipsecollections/Student.java

@@ -0,0 +1,20 @@
+package com.baeldung.eclipsecollections;
+
+public class Student {
+
+    private String firstName;
+    private String lastName;
+
+    public Student(String firstName, String lastName) {
+        this.firstName = firstName;
+        this.lastName = lastName;
+    }
+
+    public String getFirstName() {
+        return this.firstName;
+    }
+
+    public String getLastName() {
+        return this.lastName;
+    }
+}

libraries/src/test/java/com/baeldung/eclipsecollections/AllSatisfyPatternTest.java

@@ -0,0 +1,34 @@
+package com.baeldung.eclipsecollections;
+
+import static org.junit.Assert.assertTrue;
+
+import org.eclipse.collections.api.list.MutableList;
+import org.eclipse.collections.impl.block.factory.Predicates;
+import org.eclipse.collections.impl.list.mutable.FastList;
+import org.junit.Before;
+import org.junit.Test;
+
+public class AllSatisfyPatternTest {
+
+    MutableList<Integer> list;
+
+    @Before
+    public void getList() {
+        this.list = new FastList<>();
+        list.add(1);
+        list.add(8);
+        list.add(5);
+        list.add(41);
+        list.add(31);
+        list.add(17);
+        list.add(23);
+        list.add(38);
+    }
+
+    @Test
+    public void whenAnySatisfiesCondition_thenCorrect() {
+        boolean result = list.allSatisfy(Predicates.greaterThan(0));
+
+        assertTrue(result);
+    }
+}

libraries/src/test/java/com/baeldung/eclipsecollections/AnySatisfyPatternTest.java

@@ -0,0 +1,34 @@
+package com.baeldung.eclipsecollections;
+
+import static org.junit.Assert.assertTrue;
+
+import org.eclipse.collections.api.list.MutableList;
+import org.eclipse.collections.impl.block.factory.Predicates;
+import org.eclipse.collections.impl.list.mutable.FastList;
+import org.junit.Before;
+import org.junit.Test;
+
+public class AnySatisfyPatternTest {
+
+    MutableList<Integer> list;
+
+    @Before
+    public void getList() {
+        this.list = new FastList<>();
+        list.add(1);
+        list.add(8);
+        list.add(5);
+        list.add(41);
+        list.add(31);
+        list.add(17);
+        list.add(23);
+        list.add(38);
+    }
+
+    @Test
+    public void whenAnySatisfiesCondition_thenCorrect() {
+        boolean result = list.anySatisfy(Predicates.greaterThan(30));
+
+        assertTrue(result);
+    }
+}

libraries/src/test/java/com/baeldung/eclipsecollections/CollectPatternTest.java

@@ -0,0 +1,22 @@
+package com.baeldung.eclipsecollections;
+
+import org.eclipse.collections.api.list.MutableList;
+import org.eclipse.collections.impl.list.mutable.FastList;
+import static org.junit.Assert.assertEquals;
+import org.junit.Test;
+
+public class CollectPatternTest {
+
+    @Test
+    public void whenCollect_thenCorrect() {
+        Student student1 = new Student("John", "Hopkins");
+        Student student2 = new Student("George", "Adams");
+
+        MutableList<Student> students = FastList.newListWith(student1, student2);
+
+        MutableList<String> lastNames = students.collect(Student::getLastName);
+
+        assertEquals(lastNames.get(0), "Hopkins");
+        assertEquals(lastNames.get(1), "Adams");
+    }
+}

libraries/src/test/java/com/baeldung/eclipsecollections/ConvertContainerToAnotherTest.java

@@ -0,0 +1,20 @@
+package com.baeldung.eclipsecollections;
+
+import static org.junit.Assert.assertTrue;
+
+import org.eclipse.collections.api.list.MutableList;
+import org.eclipse.collections.impl.block.factory.Predicates;
+import org.junit.Test;
+
+public class ConvertContainerToAnotherTest {
+
+    @SuppressWarnings({ "unchecked", "rawtypes" })
+    @Test
+    public void whenConvertContainerToAnother_thenCorrect() {
+        MutableList<String> cars = (MutableList) ConvertContainerToAnother.convertToList();
+        
+        assertTrue(cars.anySatisfy(Predicates.equal("Toyota")));
+        assertTrue(cars.anySatisfy(Predicates.equal("Mercedes")));
+        assertTrue(cars.anySatisfy(Predicates.equal("Volkswagen")));
+    }
+}

libraries/src/test/java/com/baeldung/eclipsecollections/DetectPatternTest.java

@@ -0,0 +1,34 @@
+package com.baeldung.eclipsecollections;
+
+import org.eclipse.collections.api.list.MutableList;
+import org.eclipse.collections.impl.block.factory.Predicates;
+import org.eclipse.collections.impl.list.mutable.FastList;
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Before;
+import org.junit.Test;
+
+public class DetectPatternTest {
+
+    MutableList<Integer> list;
+
+    @Before
+    public void getList() {
+        this.list = new FastList<>();
+        list.add(1);
+        list.add(8);
+        list.add(5);
+        list.add(41);
+        list.add(31);
+        list.add(17);
+        list.add(23);
+        list.add(38);
+    }
+
+    @Test
+    public void whenDetect_thenCorrect() {
+        Integer result = list.detect(Predicates.greaterThan(30));
+
+        assertEquals((int) result, 41);
+    }
+}

libraries/src/test/java/com/baeldung/eclipsecollections/ForEachPatternTest.java

@@ -0,0 +1,32 @@
+package com.baeldung.eclipsecollections;
+
+import org.eclipse.collections.api.block.procedure.Procedure;
+import org.eclipse.collections.api.tuple.Pair;
+import org.eclipse.collections.impl.map.mutable.UnifiedMap;
+import org.eclipse.collections.impl.tuple.Tuples;
+import static org.junit.Assert.assertEquals;
+
+import java.util.Map;
+
+import org.junit.Test;
+
+public class ForEachPatternTest {
+
+    @SuppressWarnings("unchecked")
+    @Test
+    public void whenInstantiateAndChangeValues_thenCorrect() {
+        Pair<Integer, String> pair1 = Tuples.pair(1, "One");
+        Pair<Integer, String> pair2 = Tuples.pair(2, "Two");
+        Pair<Integer, String> pair3 = Tuples.pair(3, "Three");
+
+        UnifiedMap<Integer, String> map = UnifiedMap.newMapWith(pair1, pair2, pair3);
+
+        for (int i = 0; i < map.size(); i++) {
+            map.put(i + 1, "New Value");
+        }
+
+        for (int i = 0; i < map.size(); i++) {
+            assertEquals("New Value", map.get(i + 1));
+        }
+    }
+}

libraries/src/test/java/com/baeldung/eclipsecollections/InjectIntoPatternTest.java

@@ -0,0 +1,23 @@
+package com.baeldung.eclipsecollections;
+
+import static org.junit.Assert.assertEquals;
+
+import java.util.List;
+
+import org.eclipse.collections.impl.factory.Lists;
+import org.junit.Test;
+
+public class InjectIntoPatternTest {
+
+    @Test
+    public void whenInjectInto_thenCorrect() {
+        List<Integer> list = Lists.mutable.of(1, 2, 3, 4);
+        int result = 5;
+        for (int i = 0; i < list.size(); i++) {
+            Integer v = list.get(i);
+            result = result + v.intValue();
+        }
+        
+        assertEquals(15, result);
+    }
+}

libraries/src/test/java/com/baeldung/eclipsecollections/LazyIterationTest.java

@@ -0,0 +1,26 @@
+package com.baeldung.eclipsecollections;
+
+import org.eclipse.collections.api.LazyIterable;
+import org.eclipse.collections.api.list.MutableList;
+import org.eclipse.collections.impl.block.factory.Predicates;
+import org.eclipse.collections.impl.factory.Lists;
+import static org.junit.Assert.assertTrue;
+import org.junit.Test;
+
+public class LazyIterationTest {
+
+    @Test
+    public void whenLazyIteration_thenCorrect() {
+        Student student1 = new Student("John", "Hopkins");
+        Student student2 = new Student("George", "Adams");
+        Student student3 = new Student("Jennifer", "Rodriguez");
+
+        MutableList<Student> students = Lists.mutable.with(student1, student2, student3);
+        LazyIterable<Student> lazyStudents = students.asLazy();
+        LazyIterable<String> lastNames = lazyStudents.collect(Student::getLastName);
+
+        assertTrue(lastNames.anySatisfy(Predicates.equal("Hopkins")));
+        assertTrue(lastNames.anySatisfy(Predicates.equal("Adams")));
+        assertTrue(lastNames.anySatisfy(Predicates.equal("Rodriguez")));
+    }
+}

libraries/src/test/java/com/baeldung/eclipsecollections/PartitionPatternTest.java

@@ -0,0 +1,61 @@
+package com.baeldung.eclipsecollections;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+import org.eclipse.collections.api.block.predicate.Predicate;
+import org.eclipse.collections.api.list.MutableList;
+import org.eclipse.collections.api.partition.list.PartitionMutableList;
+import org.eclipse.collections.impl.block.factory.Predicates;
+import org.eclipse.collections.impl.list.mutable.FastList;
+import org.junit.Before;
+import org.junit.Test;
+
+public class PartitionPatternTest {
+
+    MutableList<Integer> list;
+
+    @Before
+    public void getList() {
+        this.list = new FastList<>();
+        list.add(1);
+        list.add(8);
+        list.add(5);
+        list.add(41);
+        list.add(31);
+        list.add(17);
+        list.add(23);
+        list.add(38);
+    }
+
+    @SuppressWarnings({ "unused" })
+    @Test
+    public void whenAnySatisfiesCondition_thenCorrect() {
+        MutableList<Integer> numbers = list;
+        PartitionMutableList<Integer> partitionedFolks = numbers.partition(new Predicate<Integer>() {
+
+            /**
+             * 
+             */
+            private static final long serialVersionUID = -1551138743683678406L;
+
+            public boolean accept(Integer each) {
+                return each > 30;
+            }
+        });
+        MutableList<Integer> greaterThanThirty = partitionedFolks.getSelected()
+            .sortThis();
+        MutableList<Integer> smallerThanThirty = partitionedFolks.getRejected()
+            .sortThis();
+
+        assertEquals(1, (int) smallerThanThirty.getFirst());
+        assertTrue(smallerThanThirty.anySatisfy(Predicates.equal(5)));
+        assertTrue(smallerThanThirty.anySatisfy(Predicates.equal(8)));
+        assertTrue(smallerThanThirty.anySatisfy(Predicates.equal(17)));
+        assertTrue(smallerThanThirty.anySatisfy(Predicates.equal(23)));
+
+        assertTrue(greaterThanThirty.anySatisfy(Predicates.equal(31)));
+        assertTrue(greaterThanThirty.anySatisfy(Predicates.equal(38)));
+        assertTrue(greaterThanThirty.anySatisfy(Predicates.equal(41)));
+    }
+}

libraries/src/test/java/com/baeldung/eclipsecollections/RejectPatternTest.java

@@ -0,0 +1,38 @@
+package com.baeldung.eclipsecollections;
+
+import org.eclipse.collections.api.list.MutableList;
+import org.eclipse.collections.impl.block.factory.Predicates;
+import org.eclipse.collections.impl.list.mutable.FastList;
+import static org.junit.Assert.assertEquals;
+import org.junit.Before;
+import org.junit.Test;
+
+public class RejectPatternTest {
+
+    MutableList<Integer> list;
+
+    @Before
+    public void getList() {
+        this.list = new FastList<>();
+        list.add(1);
+        list.add(8);
+        list.add(5);
+        list.add(41);
+        list.add(31);
+        list.add(17);
+        list.add(23);
+        list.add(38);
+    }
+
+    @Test
+    public void whenReject_thenCorrect() {
+        MutableList<Integer> notGreaterThanThirty = list.reject(Predicates.greaterThan(30))
+            .sortThis();
+
+        assertEquals(1, (int) notGreaterThanThirty.getFirst());
+        assertEquals(5, (int) notGreaterThanThirty.get(1));
+        assertEquals(8, (int) notGreaterThanThirty.get(2));
+        assertEquals(17, (int) notGreaterThanThirty.get(3));
+        assertEquals(23, (int) notGreaterThanThirty.getLast());
+    }
+}

libraries/src/test/java/com/baeldung/eclipsecollections/SelectPatternTest.java

@@ -0,0 +1,52 @@
+package com.baeldung.eclipsecollections;
+
+import org.eclipse.collections.api.list.MutableList;
+import org.eclipse.collections.impl.block.factory.Predicates;
+import org.eclipse.collections.impl.list.mutable.FastList;
+import static org.junit.Assert.assertEquals;
+import org.junit.Before;
+import org.junit.Test;
+
+public class SelectPatternTest {
+
+    MutableList<Integer> list;
+
+    @Before
+    public void getList() {
+        this.list = new FastList<>();
+        list.add(1);
+        list.add(8);
+        list.add(5);
+        list.add(41);
+        list.add(31);
+        list.add(17);
+        list.add(23);
+        list.add(38);
+    }
+
+    @Test
+    public void givenListwhenSelect_thenCorrect() {
+        MutableList<Integer> greaterThanThirty = list.select(Predicates.greaterThan(30))
+            .sortThis();
+
+        assertEquals(31, (int) greaterThanThirty.getFirst());
+        assertEquals(38, (int) greaterThanThirty.get(1));
+        assertEquals(41, (int) greaterThanThirty.getLast());
+    }
+
+    @SuppressWarnings("rawtypes")
+    public MutableList selectUsingLambda() {
+        return list.select(each -> each > 30)
+            .sortThis();
+    }
+
+    @SuppressWarnings("unchecked")
+    @Test
+    public void givenListwhenSelectUsingLambda_thenCorrect() {
+        MutableList<Integer> greaterThanThirty = selectUsingLambda();
+
+        assertEquals(31, (int) greaterThanThirty.getFirst());
+        assertEquals(38, (int) greaterThanThirty.get(1));
+        assertEquals(41, (int) greaterThanThirty.getLast());
+    }
+}

libraries/src/test/java/com/baeldung/hll/HLLUnitTest.java

@@ -23,9 +23,9 @@ public class HLLUnitTest {
 
         //when
         LongStream.range(0, numberOfElements).forEach(element -> {
-                    long hashedValue = hashFunction.newHasher().putLong(element).hash().asLong();
+              long hashedValue = hashFunction.newHasher().putLong(element).hash().asLong();
-                    hll.addRaw(hashedValue);
+              hll.addRaw(hashedValue);
-                }
+          }
         );
 
         //then
@@ -44,15 +44,15 @@ public class HLLUnitTest {
 
         //when
         LongStream.range(0, numberOfElements).forEach(element -> {
-                    long hashedValue = hashFunction.newHasher().putLong(element).hash().asLong();
+              long hashedValue = hashFunction.newHasher().putLong(element).hash().asLong();
-                    firstHll.addRaw(hashedValue);
+              firstHll.addRaw(hashedValue);
-                }
+          }
         );
 
         LongStream.range(numberOfElements, numberOfElements * 2).forEach(element -> {
-                    long hashedValue = hashFunction.newHasher().putLong(element).hash().asLong();
+              long hashedValue = hashFunction.newHasher().putLong(element).hash().asLong();
-                    secondHLL.addRaw(hashedValue);
+              secondHLL.addRaw(hashedValue);
-                }
+          }
         );
 
         //then

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

@@ -31,7 +31,7 @@ import org.springframework.web.client.RestTemplate;
 import io.specto.hoverfly.junit.core.SimulationSource;
 import io.specto.hoverfly.junit.rule.HoverflyRule;
 
-public class HoverflyApiTest {
+public class HoverflyApiIntegrationTest {
 
     private static final SimulationSource source = dsl(
       service("http://www.baeldung.com")

libraries/src/test/java/com/baeldung/pcollections/PCollectionsUnitTest.java

@@ -1,7 +1,12 @@
 package com.baeldung.pcollections;
 
 import org.junit.Test;
-import org.pcollections.*;
+import org.pcollections.HashPMap;
+import org.pcollections.HashTreePMap;
+import org.pcollections.HashTreePSet;
+import org.pcollections.MapPSet;
+import org.pcollections.PVector;
+import org.pcollections.TreePVector;
 
 import java.util.Arrays;
 import java.util.HashMap;
@@ -27,7 +32,7 @@ public class PCollectionsUnitTest {
 
     @Test
     public void givenExistingHashMap_whenFrom_thenCreateHashPMap() {
-        Map map = new HashMap();
+        Map<String, String> map = new HashMap<>();
         map.put("mkey1", "mval1");
         map.put("mkey2", "mval2");
 
@@ -41,7 +46,7 @@ public class PCollectionsUnitTest {
         HashPMap<String, String> pmap = HashTreePMap.empty();
         HashPMap<String, String> pmap0 = pmap.plus("key1", "value1");
 
-        Map map = new HashMap();
+        Map<String, String> map = new HashMap<>();
         map.put("key2", "val2");
         map.put("key3", "val3");
 
@@ -57,22 +62,24 @@ public class PCollectionsUnitTest {
 
     @Test
     public void whenTreePVectorMethods_thenPerformOperations() {
-        TreePVector pVector = TreePVector.empty();
+        TreePVector<String> pVector = TreePVector.empty();
+
+        TreePVector<String> pV1 = pVector.plus("e1");
+        TreePVector<String> pV2 = pV1.plusAll(Arrays.asList("e2", "e3", "e4"));
 
-        TreePVector pV1 = pVector.plus("e1");
-        TreePVector pV2 = pV1.plusAll(Arrays.asList("e2", "e3", "e4"));
         assertEquals(1, pV1.size());
         assertEquals(4, pV2.size());
 
-        TreePVector pV3 = pV2.minus("e1");
+        TreePVector<String> pV3 = pV2.minus("e1");
-        TreePVector pV4 = pV3.minusAll(Arrays.asList("e2", "e3", "e4"));
+        TreePVector<String> pV4 = pV3.minusAll(Arrays.asList("e2", "e3", "e4"));
+
         assertEquals(pV3.size(), 3);
         assertEquals(pV4.size(), 0);
 
-        TreePVector pSub = pV2.subList(0, 2);
+        TreePVector<String> pSub = pV2.subList(0, 2);
         assertTrue(pSub.contains("e1") && pSub.contains("e2"));
 
-        TreePVector pVW = (TreePVector) pV2.with(0, "e10");
+        PVector<String> pVW = pV2.with(0, "e10");
         assertEquals(pVW.get(0), "e10");
     }
 
@@ -80,7 +87,7 @@ public class PCollectionsUnitTest {
     public void whenMapPSetMethods_thenPerformOperations() {
 
         MapPSet pSet = HashTreePSet.empty()
-                .plusAll(Arrays.asList("e1","e2","e3","e4"));
+          .plusAll(Arrays.asList("e1", "e2", "e3", "e4"));
         assertEquals(pSet.size(), 4);
 
         MapPSet pSet1 = pSet.minus("e4");

metrics/src/test/java/com/baeldung/metrics/servo/AtlasObserverLiveTest.java

@@ -27,9 +27,6 @@ import static org.hamcrest.CoreMatchers.containsString;
 import static org.hamcrest.CoreMatchers.not;
 import static org.junit.Assert.assertThat;
 
-/**
- * @author aiet
- */
 public class AtlasObserverLiveTest {
 
     private final String atlasUri = "http://localhost:7101/api/v1";

metrics/src/test/java/com/baeldung/metrics/servo/MetricAnnotationManualTest.java

@@ -22,10 +22,7 @@ import static org.hamcrest.Matchers.*;
 import static org.junit.Assert.assertThat;
 import static org.junit.Assert.assertTrue;
 
-/**
+public class MetricAnnotationManualTest extends MetricTestBase {
- * @author aiet
- */
-public class MetricAnnotationTest extends MetricTestBase {
 
     @Monitor(name = "integerCounter", type = DataSourceType.COUNTER, description = "Total number of update operations.")
     private final AtomicInteger updateCount = new AtomicInteger(0);

metrics/src/test/java/com/baeldung/metrics/servo/MetricObserverManualTest.java

@@ -13,14 +13,16 @@ import java.util.List;
 
 import static com.netflix.servo.annotations.DataSourceType.GAUGE;
 import static java.util.concurrent.TimeUnit.SECONDS;
-import static org.hamcrest.Matchers.*;
+import static org.hamcrest.Matchers.allOf;
+import static org.hamcrest.Matchers.greaterThanOrEqualTo;
+import static org.hamcrest.Matchers.hasItem;
+import static org.hamcrest.Matchers.hasProperty;
+import static org.hamcrest.Matchers.hasSize;
+import static org.hamcrest.Matchers.is;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertThat;
 
-/**
+public class MetricObserverManualTest extends MetricTestBase {
- * @author aiet
- */
-public class MetricObserverTest extends MetricTestBase {
 
     @Test
     public void givenMetrics_whenRegister_thenMonitored() throws InterruptedException {

metrics/src/test/java/com/baeldung/metrics/servo/MetricPollerManualTest.java

@@ -1,20 +1,23 @@
 package com.baeldung.metrics.servo;
 
 import com.netflix.servo.Metric;
-import com.netflix.servo.publish.*;
+import com.netflix.servo.publish.BasicMetricFilter;
+import com.netflix.servo.publish.JvmMetricPoller;
+import com.netflix.servo.publish.MemoryMetricObserver;
+import com.netflix.servo.publish.PollRunnable;
+import com.netflix.servo.publish.PollScheduler;
 import org.junit.Test;
 
 import java.util.List;
 
 import static java.util.concurrent.TimeUnit.SECONDS;
 import static java.util.stream.Collectors.toList;
-import static org.hamcrest.Matchers.*;
+import static org.hamcrest.Matchers.greaterThanOrEqualTo;
+import static org.hamcrest.Matchers.hasItems;
+import static org.hamcrest.Matchers.hasSize;
 import static org.junit.Assert.assertThat;
 
-/**
+public class MetricPollerManualTest {
- * @author aiet
- */
-public class MetricPollerTest {
 
     @Test
     public void givenJvmPoller_whenMonitor_thenDataCollected() throws Exception {

metrics/src/test/java/com/baeldung/metrics/servo/MetricTestBase.java

@@ -1,14 +1,16 @@
 package com.baeldung.metrics.servo;
 
-import com.netflix.servo.publish.*;
+import com.netflix.servo.publish.BasicMetricFilter;
+import com.netflix.servo.publish.MemoryMetricObserver;
+import com.netflix.servo.publish.MetricFilter;
+import com.netflix.servo.publish.MonitorRegistryMetricPoller;
+import com.netflix.servo.publish.PollRunnable;
+import com.netflix.servo.publish.PollScheduler;
 import org.junit.After;
 import org.junit.Before;
 
 import static java.util.concurrent.TimeUnit.SECONDS;
 
-/**
- * @author aiet
- */
 abstract class MetricTestBase {
 
     MemoryMetricObserver observer;

metrics/src/test/java/com/baeldung/metrics/servo/MetricTypeTest.java

@@ -1,6 +1,21 @@
 package com.baeldung.metrics.servo;
 
-import com.netflix.servo.monitor.*;
+import com.netflix.servo.monitor.BasicCounter;
+import com.netflix.servo.monitor.BasicGauge;
+import com.netflix.servo.monitor.BasicInformational;
+import com.netflix.servo.monitor.BasicTimer;
+import com.netflix.servo.monitor.BucketConfig;
+import com.netflix.servo.monitor.BucketTimer;
+import com.netflix.servo.monitor.Counter;
+import com.netflix.servo.monitor.Gauge;
+import com.netflix.servo.monitor.MaxGauge;
+import com.netflix.servo.monitor.Monitor;
+import com.netflix.servo.monitor.MonitorConfig;
+import com.netflix.servo.monitor.Monitors;
+import com.netflix.servo.monitor.PeakRateCounter;
+import com.netflix.servo.monitor.StatsTimer;
+import com.netflix.servo.monitor.StepCounter;
+import com.netflix.servo.monitor.Stopwatch;
 import com.netflix.servo.stats.StatsConfig;
 import org.junit.Ignore;
 import org.junit.Test;
@@ -9,13 +24,12 @@ import java.util.Map;
 
 import static java.util.concurrent.TimeUnit.SECONDS;
 import static java.util.stream.Collectors.toMap;
-import static org.hamcrest.Matchers.*;
+import static org.hamcrest.Matchers.allOf;
+import static org.hamcrest.Matchers.containsInAnyOrder;
+import static org.hamcrest.Matchers.hasEntry;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertThat;
 
-/**
- * Unit test for simple App.
- */
 public class MetricTypeTest {
 
     @Test
@@ -113,7 +127,7 @@ public class MetricTypeTest {
         BucketTimer timer = new BucketTimer(MonitorConfig
           .builder("test")
           .build(), new BucketConfig.Builder()
-          .withBuckets(new long[] { 2L, 5L })
+          .withBuckets(new long[]{2L, 5L})
           .withTimeUnit(SECONDS)
           .build(), SECONDS);
         timer.record(3);
@@ -150,7 +164,7 @@ public class MetricTypeTest {
           .builder("test")
           .build(), new StatsConfig.Builder()
           .withComputeFrequencyMillis(2000)
-          .withPercentiles(new double[] { 99.0, 95.0, 90.0 })
+          .withPercentiles(new double[]{99.0, 95.0, 90.0})
           .withPublishMax(true)
           .withPublishMin(true)
           .withPublishCount(true)

spring-activiti/src/test/java/com/example/activitiwithspring/ProcessEngineCreationIntegrationTest.java

@@ -3,11 +3,12 @@ package com.example.activitiwithspring;
 import org.activiti.engine.ProcessEngine;
 import org.activiti.engine.ProcessEngineConfiguration;
 import org.activiti.engine.ProcessEngines;
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNotNull;
 import org.junit.Test;
 
-public class ProcessEngineCreationTests {
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+
+public class ProcessEngineCreationIntegrationTest {
 
     @Test
     public void givenXMLConfig_whenGetDefault_thenGotProcessEngine() {
@@ -35,7 +36,7 @@ public class ProcessEngineCreationTests {
     @Test
     public void givenDifferentBeanNameInXMLConfig_whenGetProcessEngineConfig_thenGotResult() {
         ProcessEngineConfiguration processEngineConfiguration = ProcessEngineConfiguration
-                .createProcessEngineConfigurationFromResource("my.activiti.cfg.xml", "myProcessEngineConfiguration");
+          .createProcessEngineConfigurationFromResource("my.activiti.cfg.xml", "myProcessEngineConfiguration");
         ProcessEngine processEngine = processEngineConfiguration.buildProcessEngine();
         assertNotNull(processEngine);
         assertEquals("baeldung", processEngine.getProcessEngineConfiguration().getJdbcUsername());
@@ -45,8 +46,8 @@ public class ProcessEngineCreationTests {
     public void givenNoXMLConfig_whenCreateInMemProcessEngineConfig_thenCreated() {
         ProcessEngineConfiguration processEngineConfiguration = ProcessEngineConfiguration.createStandaloneInMemProcessEngineConfiguration();
         ProcessEngine processEngine = processEngineConfiguration
-                .setJdbcUrl("jdbc:h2:mem:my-own-in-mem-db;DB_CLOSE_DELAY=1000")
+          .setJdbcUrl("jdbc:h2:mem:my-own-in-mem-db;DB_CLOSE_DELAY=1000")
-                .buildProcessEngine();
+          .buildProcessEngine();
         assertNotNull(processEngine);
         assertEquals("sa", processEngine.getProcessEngineConfiguration().getJdbcUsername());
     }
@@ -55,9 +56,9 @@ public class ProcessEngineCreationTests {
     public void givenNoXMLConfig_whenCreateProcessEngineConfig_thenCreated() {
         ProcessEngineConfiguration processEngineConfiguration = ProcessEngineConfiguration.createStandaloneProcessEngineConfiguration();
         ProcessEngine processEngine = processEngineConfiguration
-                .setDatabaseSchemaUpdate(ProcessEngineConfiguration.DB_SCHEMA_UPDATE_TRUE)
+          .setDatabaseSchemaUpdate(ProcessEngineConfiguration.DB_SCHEMA_UPDATE_TRUE)
-                .setJdbcUrl("jdbc:h2:mem:my-own-db;DB_CLOSE_DELAY=1000")
+          .setJdbcUrl("jdbc:h2:mem:my-own-db;DB_CLOSE_DELAY=1000")
-                .buildProcessEngine();
+          .buildProcessEngine();
         assertNotNull(processEngine);
         assertEquals("sa", processEngine.getProcessEngineConfiguration().getJdbcUsername());
     }

spring-activiti/src/test/java/com/example/activitiwithspring/ProcessExecutionIntegrationTest.java

@@ -1,10 +1,6 @@
 package com.example.activitiwithspring;
 
 
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-
 import org.activiti.engine.ActivitiException;
 import org.activiti.engine.ProcessEngine;
 import org.activiti.engine.ProcessEngines;
@@ -13,19 +9,24 @@ import org.activiti.engine.RuntimeService;
 import org.activiti.engine.TaskService;
 import org.activiti.engine.runtime.ProcessInstance;
 import org.activiti.engine.task.Task;
-import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertTrue;
 import org.junit.Test;
 
-public class ProcessExecutionTests {
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
+
+public class ProcessExecutionIntegrationTest {
 
     @Test
     public void givenBPMN_whenDeployProcess_thenDeployed() {
         ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
         RepositoryService repositoryService = processEngine.getRepositoryService();
         repositoryService.createDeployment()
-                .addClasspathResource("org/activiti/test/vacationRequest.bpmn20.xml")
+          .addClasspathResource("org/activiti/test/vacationRequest.bpmn20.xml")
-                .deploy();
+          .deploy();
         Long count = repositoryService.createProcessDefinitionQuery().count();
         assertTrue(count >= 1);
     }
@@ -35,8 +36,8 @@ public class ProcessExecutionTests {
         ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
         RepositoryService repositoryService = processEngine.getRepositoryService();
         repositoryService.createDeployment()
-                .addClasspathResource("org/activiti/test/vacationRequest.bpmn20.xml")
+          .addClasspathResource("org/activiti/test/vacationRequest.bpmn20.xml")
-                .deploy();
+          .deploy();
 
         Map<String, Object> variables = new HashMap<String, Object>();
         variables.put("employeeName", "Kermit");
@@ -45,7 +46,7 @@ public class ProcessExecutionTests {
 
         RuntimeService runtimeService = processEngine.getRuntimeService();
         ProcessInstance processInstance = runtimeService
-                .startProcessInstanceByKey("vacationRequest", variables);
+          .startProcessInstanceByKey("vacationRequest", variables);
 
         Long count = runtimeService.createProcessInstanceQuery().count();
         assertTrue(count >= 1);
@@ -56,8 +57,8 @@ public class ProcessExecutionTests {
         ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
         RepositoryService repositoryService = processEngine.getRepositoryService();
         repositoryService.createDeployment()
-                .addClasspathResource("org/activiti/test/vacationRequest.bpmn20.xml")
+          .addClasspathResource("org/activiti/test/vacationRequest.bpmn20.xml")
-                .deploy();
+          .deploy();
 
         Map<String, Object> variables = new HashMap<String, Object>();
         variables.put("employeeName", "Kermit");
@@ -66,7 +67,7 @@ public class ProcessExecutionTests {
 
         RuntimeService runtimeService = processEngine.getRuntimeService();
         ProcessInstance processInstance = runtimeService
-                .startProcessInstanceByKey("vacationRequest", variables);
+          .startProcessInstanceByKey("vacationRequest", variables);
 
         TaskService taskService = processEngine.getTaskService();
         List<Task> tasks = taskService.createTaskQuery().taskCandidateGroup("management").list();
@@ -87,8 +88,8 @@ public class ProcessExecutionTests {
         ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
         RepositoryService repositoryService = processEngine.getRepositoryService();
         repositoryService.createDeployment()
-                .addClasspathResource("org/activiti/test/vacationRequest.bpmn20.xml")
+          .addClasspathResource("org/activiti/test/vacationRequest.bpmn20.xml")
-                .deploy();
+          .deploy();
 
         RuntimeService runtimeService = processEngine.getRuntimeService();
         repositoryService.suspendProcessDefinitionByKey("vacationRequest");

spring-rest/src/main/java/org/baeldung/web/controller/redirect/RedirectController.java

@@ -1,11 +1,15 @@
 package org.baeldung.web.controller.redirect;
 
+import javax.servlet.http.HttpServletRequest;
+
+import org.springframework.http.HttpStatus;
 import org.springframework.stereotype.Controller;
 import org.springframework.ui.ModelMap;
 import org.springframework.web.bind.annotation.ModelAttribute;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestMethod;
 import org.springframework.web.servlet.ModelAndView;
+import org.springframework.web.servlet.View;
 import org.springframework.web.servlet.mvc.support.RedirectAttributes;
 import org.springframework.web.servlet.view.RedirectView;
 
@@ -49,4 +53,16 @@ public class RedirectController {
         model.addAttribute("redirectionAttribute", flashAttribute);
         return new ModelAndView("redirection", model);
     }
+
+    @RequestMapping(value = "/redirectPostToPost", method = RequestMethod.POST)
+    public ModelAndView redirectPostToPost(HttpServletRequest request) {
+        request.setAttribute(View.RESPONSE_STATUS_ATTRIBUTE, HttpStatus.TEMPORARY_REDIRECT);
+        return new ModelAndView("redirect:/redirectedPostToPost");
+    }
+
+    @RequestMapping(value = "/redirectedPostToPost", method = RequestMethod.POST)
+    public ModelAndView redirectedPostToPost() {
+        return new ModelAndView("redirection");
+    }
+
 }