diff --git a/annotations/annotation-processing/pom.xml b/annotations/annotation-processing/pom.xml
new file mode 100644
index 0000000000..6d07394b87
--- /dev/null
+++ b/annotations/annotation-processing/pom.xml
@@ -0,0 +1,50 @@
+
+
+ 4.0.0
+
+
+ com.baeldung
+ 1.0.0-SNAPSHOT
+ annotations
+ ../
+
+
+ annotation-processing
+
+
+ 1.0-rc2
+ 3.5.1
+
+
+
+
+
+ com.google.auto.service
+ auto-service
+ ${auto-service.version}
+ provided
+
+
+
+
+
+
+
+
+
+ org.apache.maven.plugins
+ maven-compiler-plugin
+ ${maven-compiler-plugin.version}
+
+
+ 1.8
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/annotations/annotation-processing/src/main/java/com/baeldung/annotation/processor/BuilderProcessor.java b/annotations/annotation-processing/src/main/java/com/baeldung/annotation/processor/BuilderProcessor.java
new file mode 100644
index 0000000000..0883e108e7
--- /dev/null
+++ b/annotations/annotation-processing/src/main/java/com/baeldung/annotation/processor/BuilderProcessor.java
@@ -0,0 +1,132 @@
+package com.baeldung.annotation.processor;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.stream.Collectors;
+import javax.annotation.processing.*;
+import javax.lang.model.SourceVersion;
+import javax.lang.model.element.Element;
+import javax.lang.model.element.TypeElement;
+import javax.lang.model.type.ExecutableType;
+import javax.tools.Diagnostic;
+import javax.tools.JavaFileObject;
+
+import com.google.auto.service.AutoService;
+
+@SupportedAnnotationTypes("com.baeldung.annotation.processor.BuilderProperty")
+@SupportedSourceVersion(SourceVersion.RELEASE_8)
+@AutoService(Processor.class)
+public class BuilderProcessor extends AbstractProcessor {
+
+ @Override
+ public boolean process(Set extends TypeElement> annotations, RoundEnvironment roundEnv) {
+ for (TypeElement annotation : annotations) {
+
+ Set extends Element> annotatedElements = roundEnv.getElementsAnnotatedWith(annotation);
+
+ Map> annotatedMethods = annotatedElements.stream()
+ .collect(Collectors.partitioningBy(element ->
+ ((ExecutableType) element.asType()).getParameterTypes().size() == 1
+ && element.getSimpleName().toString().startsWith("set")));
+
+ List setters = annotatedMethods.get(true);
+ List otherMethods = annotatedMethods.get(false);
+
+ otherMethods.forEach(element ->
+ processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR,
+ "@BuilderProperty must be applied to a setXxx method with a single argument", element));
+
+ if (setters.isEmpty()) {
+ continue;
+ }
+
+ String className = ((TypeElement) setters.get(0).getEnclosingElement()).getQualifiedName().toString();
+
+ Map setterMap = setters.stream().collect(Collectors.toMap(
+ setter -> setter.getSimpleName().toString(),
+ setter -> ((ExecutableType) setter.asType())
+ .getParameterTypes().get(0).toString()
+ ));
+
+ try {
+ writeBuilderFile(className, setterMap);
+ } catch (IOException e) {
+ e.printStackTrace();
+ }
+
+ }
+
+ return true;
+ }
+
+ private void writeBuilderFile(String className, Map setterMap) throws IOException {
+
+ String packageName = null;
+ int lastDot = className.lastIndexOf('.');
+ if (lastDot > 0) {
+ packageName = className.substring(0, lastDot);
+ }
+
+ String simpleClassName = className.substring(lastDot + 1);
+ String builderClassName = className + "Builder";
+ String builderSimpleClassName = builderClassName.substring(lastDot + 1);
+
+ JavaFileObject builderFile = processingEnv.getFiler().createSourceFile(builderClassName);
+ try (PrintWriter out = new PrintWriter(builderFile.openWriter())) {
+
+ if (packageName != null) {
+ out.print("package ");
+ out.print(packageName);
+ out.println(";");
+ out.println();
+ }
+
+ out.print("public class ");
+ out.print(builderSimpleClassName);
+ out.println(" {");
+ out.println();
+
+ out.print(" private ");
+ out.print(simpleClassName);
+ out.print(" object = new ");
+ out.print(simpleClassName);
+ out.println("();");
+ out.println();
+
+ out.print(" public ");
+ out.print(simpleClassName);
+ out.println(" build() {");
+ out.println(" return object;");
+ out.println(" }");
+ out.println();
+
+ setterMap.entrySet().forEach(setter -> {
+ String methodName = setter.getKey();
+ String argumentType = setter.getValue();
+
+ out.print(" public ");
+ out.print(builderSimpleClassName);
+ out.print(" ");
+ out.print(methodName);
+
+ out.print("(");
+
+ out.print(argumentType);
+ out.println(" value) {");
+ out.print(" object.");
+ out.print(methodName);
+ out.println("(value);");
+ out.println(" return this;");
+ out.println(" }");
+ out.println();
+ });
+
+ out.println("}");
+
+ }
+ }
+
+}
diff --git a/annotations/annotation-processing/src/main/java/com/baeldung/annotation/processor/BuilderProperty.java b/annotations/annotation-processing/src/main/java/com/baeldung/annotation/processor/BuilderProperty.java
new file mode 100644
index 0000000000..84fcc73850
--- /dev/null
+++ b/annotations/annotation-processing/src/main/java/com/baeldung/annotation/processor/BuilderProperty.java
@@ -0,0 +1,8 @@
+package com.baeldung.annotation.processor;
+
+import java.lang.annotation.*;
+
+@Target(ElementType.METHOD)
+@Retention(RetentionPolicy.SOURCE)
+public @interface BuilderProperty {
+}
diff --git a/annotations/annotation-user/pom.xml b/annotations/annotation-user/pom.xml
new file mode 100644
index 0000000000..f76f691f93
--- /dev/null
+++ b/annotations/annotation-user/pom.xml
@@ -0,0 +1,51 @@
+
+
+ 4.0.0
+
+
+ annotations
+ com.baeldung
+ 1.0.0-SNAPSHOT
+ ../
+
+
+ annotation-user
+
+
+
+
+ com.baeldung
+ annotation-processing
+ ${project.parent.version}
+
+
+
+ junit
+ junit
+ 4.12
+ test
+
+
+
+
+
+
+
+
+
+ org.apache.maven.plugins
+ maven-compiler-plugin
+ 3.5.1
+
+
+ 1.8
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/annotations/annotation-user/src/main/java/com/baeldung/annotation/Person.java b/annotations/annotation-user/src/main/java/com/baeldung/annotation/Person.java
new file mode 100644
index 0000000000..23787ba4f4
--- /dev/null
+++ b/annotations/annotation-user/src/main/java/com/baeldung/annotation/Person.java
@@ -0,0 +1,29 @@
+package com.baeldung.annotation;
+
+import com.baeldung.annotation.processor.BuilderProperty;
+
+public class Person {
+
+ private int age;
+
+ private String name;
+
+ public int getAge() {
+ return age;
+ }
+
+ @BuilderProperty
+ public void setAge(int age) {
+ this.age = age;
+ }
+
+ public String getName() {
+ return name;
+ }
+
+ @BuilderProperty
+ public void setName(String name) {
+ this.name = name;
+ }
+
+}
diff --git a/annotations/annotation-user/src/test/java/com/baeldung/annotation/PersonBuilderTest.java b/annotations/annotation-user/src/test/java/com/baeldung/annotation/PersonBuilderTest.java
new file mode 100644
index 0000000000..72f9ac8bc7
--- /dev/null
+++ b/annotations/annotation-user/src/test/java/com/baeldung/annotation/PersonBuilderTest.java
@@ -0,0 +1,22 @@
+package com.baeldung.annotation;
+
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+public class PersonBuilderTest {
+
+ @Test
+ public void whenBuildPersonWithBuilder_thenObjectHasPropertyValues() {
+
+ Person person = new PersonBuilder()
+ .setAge(25)
+ .setName("John")
+ .build();
+
+ assertEquals(25, person.getAge());
+ assertEquals("John", person.getName());
+
+ }
+
+}
diff --git a/annotations/pom.xml b/annotations/pom.xml
new file mode 100644
index 0000000000..f691674cf1
--- /dev/null
+++ b/annotations/pom.xml
@@ -0,0 +1,20 @@
+
+
+
+ parent-modules
+ com.baeldung
+ 1.0.0-SNAPSHOT
+
+ 4.0.0
+
+ annotations
+ pom
+
+
+ annotation-processing
+ annotation-user
+
+
+
\ No newline at end of file
diff --git a/core-java-8/README.md b/core-java-8/README.md
index e6bac2a4c9..c130e6bd41 100644
--- a/core-java-8/README.md
+++ b/core-java-8/README.md
@@ -11,4 +11,14 @@
- [Lambda Expressions and Functional Interfaces: Tips and Best Practices](http://www.baeldung.com/java-8-lambda-expressions-tips)
- [The Double Colon Operator in Java 8](http://www.baeldung.com/java-8-double-colon-operator)
- [Java 8 Streams Advanced](http://www.baeldung.com/java-8-streams)
-- [Java 8 Collectors](http://www.baeldung.com/java-8-collectors)
\ No newline at end of file
+- [Java 8 Collectors](http://www.baeldung.com/java-8-collectors)
+- [Convert String to int or Integer in Java](http://www.baeldung.com/java-convert-string-to-int-or-integer)
+- [Convert char to String in Java](http://www.baeldung.com/java-convert-char-to-string)
+- [Guide to Java 8’s Functional Interfaces](http://www.baeldung.com/java-8-functional-interfaces)
+- [Guide To CompletableFuture](http://www.baeldung.com/java-completablefuture)
+- [Introduction to Thread Pools in Java](http://www.baeldung.com/thread-pool-java-and-guava)
+- [Guide to Java 8 Collectors](http://www.baeldung.com/java-8-collectors)
+- [The Java 8 Stream API Tutorial](http://www.baeldung.com/java-8-streams)
+- [New Features in Java 8](http://www.baeldung.com/java-8-new-features)
+- [Introduction to Java 8 Streams](http://www.baeldung.com/java-8-streams-introduction)
+- [Guide to the Fork/Join Framework in Java](http://www.baeldung.com/java-fork-join)
diff --git a/core-java-8/pom.xml b/core-java-8/pom.xml
index 63df0e1b95..566eb4e43a 100644
--- a/core-java-8/pom.xml
+++ b/core-java-8/pom.xml
@@ -1,9 +1,10 @@
4.0.0
+
com.baeldung
+ 1.0.0-SNAPSHOT
core-java8
- 0.1-SNAPSHOT
core-java8
@@ -111,6 +112,9 @@
+
+ UTF-8
+
1.7.13
1.0.13
diff --git a/core-java-8/src/test/java/com/baeldung/util/CurrentDateTimeTest.java b/core-java-8/src/test/java/com/baeldung/util/CurrentDateTimeTest.java
new file mode 100644
index 0000000000..06d9394a5e
--- /dev/null
+++ b/core-java-8/src/test/java/com/baeldung/util/CurrentDateTimeTest.java
@@ -0,0 +1,47 @@
+package com.baeldung.util;
+
+import static org.junit.Assert.assertEquals;
+
+import java.time.Instant;
+import java.time.LocalDate;
+import java.time.LocalTime;
+import java.time.temporal.ChronoField;
+import java.util.Calendar;
+import java.util.GregorianCalendar;
+
+import org.junit.Test;
+
+public class CurrentDateTimeTest {
+
+ @Test
+ public void shouldReturnCurrentDate() {
+
+ final LocalDate now = LocalDate.now();
+ final Calendar calendar = GregorianCalendar.getInstance();
+
+ assertEquals("10-10-2010".length(), now.toString().length());
+ assertEquals(calendar.get(Calendar.DATE), now.get(ChronoField.DAY_OF_MONTH));
+ assertEquals(calendar.get(Calendar.MONTH), now.get(ChronoField.MONTH_OF_YEAR) - 1);
+ assertEquals(calendar.get(Calendar.YEAR), now.get(ChronoField.YEAR));
+ }
+
+ @Test
+ public void shouldReturnCurrentTime() {
+
+ final LocalTime now = LocalTime.now();
+ final Calendar calendar = GregorianCalendar.getInstance();
+
+ assertEquals(calendar.get(Calendar.HOUR_OF_DAY), now.get(ChronoField.HOUR_OF_DAY));
+ assertEquals(calendar.get(Calendar.MINUTE), now.get(ChronoField.MINUTE_OF_HOUR));
+ assertEquals(calendar.get(Calendar.SECOND), now.get(ChronoField.SECOND_OF_MINUTE));
+ }
+
+ @Test
+ public void shouldReturnCurrentTimestamp() {
+
+ final Instant now = Instant.now();
+ final Calendar calendar = GregorianCalendar.getInstance();
+
+ assertEquals(calendar.getTimeInMillis() / 1000, now.getEpochSecond());
+ }
+}
diff --git a/core-java-8/src/test/resources/.gitignore b/core-java-8/src/test/resources/.gitignore
deleted file mode 100644
index 83c05e60c8..0000000000
--- a/core-java-8/src/test/resources/.gitignore
+++ /dev/null
@@ -1,13 +0,0 @@
-*.class
-
-#folders#
-/target
-/neoDb*
-/data
-/src/main/webapp/WEB-INF/classes
-*/META-INF/*
-
-# Packaged files #
-*.jar
-*.war
-*.ear
\ No newline at end of file
diff --git a/core-java-8/src/test/resources/test.txt b/core-java-8/src/test/resources/test.txt
new file mode 100644
index 0000000000..652d70630f
--- /dev/null
+++ b/core-java-8/src/test/resources/test.txt
@@ -0,0 +1 @@
+Lorem ipsum dolor sit amet, consectetur adipiscing elit. Suspendisse facilisis neque sed turpis venenatis, non dignissim risus volutpat.
\ No newline at end of file
diff --git a/core-java-9/pom.xml b/core-java-9/pom.xml
index b29838d283..844ad6a782 100644
--- a/core-java-9/pom.xml
+++ b/core-java-9/pom.xml
@@ -60,12 +60,8 @@
1.9
-
true
-
-
@@ -85,12 +81,7 @@
-
- 3.6-jigsaw-SNAPSHOT
-
-
+ 3.6-jigsaw-SNAPSHOT
2.19.1
diff --git a/core-java-9/src/test/java/com/baeldung/java9/Java9OptionalsStreamTest.java b/core-java-9/src/test/java/com/baeldung/java9/Java9OptionalsStreamTest.java
index 102ceda18f..b0684a94f8 100644
--- a/core-java-9/src/test/java/com/baeldung/java9/Java9OptionalsStreamTest.java
+++ b/core-java-9/src/test/java/com/baeldung/java9/Java9OptionalsStreamTest.java
@@ -42,6 +42,19 @@ public class Java9OptionalsStreamTest {
assertEquals("bar", filteredList.get(1));
}
+ @Test
+ public void filterOutPresentOptionalsWithFlatMap2() {
+ assertEquals(4, listOfOptionals.size());
+
+ List filteredList = listOfOptionals.stream()
+ .flatMap(o -> o.map(Stream::of).orElseGet(Stream::empty))
+ .collect(Collectors.toList());
+ assertEquals(2, filteredList.size());
+
+ assertEquals("foo", filteredList.get(0));
+ assertEquals("bar", filteredList.get(1));
+ }
+
@Test
public void filterOutPresentOptionalsWithJava9() {
assertEquals(4, listOfOptionals.size());
diff --git a/core-java-9/src/test/java/com/baeldung/java9/MultiResultionImageTest.java b/core-java-9/src/test/java/com/baeldung/java9/MultiResultionImageTest.java
index d6c16b91bc..a00646e4db 100644
--- a/core-java-9/src/test/java/com/baeldung/java9/MultiResultionImageTest.java
+++ b/core-java-9/src/test/java/com/baeldung/java9/MultiResultionImageTest.java
@@ -1,6 +1,5 @@
package com.baeldung.java9;
-
-import static org.junit.Assert.assertTrue;
+
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertSame;
diff --git a/core-java-9/src/test/java/com/baeldung/java9/OptionalToStreamTest.java b/core-java-9/src/test/java/com/baeldung/java9/OptionalToStreamTest.java
new file mode 100644
index 0000000000..56b4bb7b8c
--- /dev/null
+++ b/core-java-9/src/test/java/com/baeldung/java9/OptionalToStreamTest.java
@@ -0,0 +1,21 @@
+package com.baeldung.java9;
+
+import java.util.Optional;
+import java.util.stream.Stream;
+
+import org.junit.Test;
+import static org.junit.Assert.assertEquals;
+
+public class OptionalToStreamTest {
+
+ @Test
+ public void testOptionalToStream() {
+ Optional op = Optional.ofNullable("String value");
+ Stream strOptionalStream = op.stream();
+ Stream filteredStream = strOptionalStream.filter((str) -> {
+ return str != null && str.startsWith("String");
+ });
+ assertEquals(1, filteredStream.count());
+
+ }
+}
diff --git a/core-java-9/src/test/java/com/baeldung/java9/SetExamplesTest.java b/core-java-9/src/test/java/com/baeldung/java9/SetExamplesTest.java
new file mode 100644
index 0000000000..0f8db83d9c
--- /dev/null
+++ b/core-java-9/src/test/java/com/baeldung/java9/SetExamplesTest.java
@@ -0,0 +1,26 @@
+package com.baeldung.java9;
+
+import java.util.Set;
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+public class SetExamplesTest {
+
+ @Test
+ public void testUnmutableSet() {
+ Set strKeySet = Set.of("key1", "key2", "key3");
+ try {
+ strKeySet.add("newKey");
+ } catch (UnsupportedOperationException uoe) {
+ }
+ assertEquals(strKeySet.size(), 3);
+ }
+
+ @Test
+ public void testArrayToSet() {
+ Integer[] intArray = new Integer[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 0 };
+ Set intSet = Set.of(intArray);
+ assertEquals(intSet.size(), intArray.length);
+ }
+}
diff --git a/core-java/src/main/java/org/baeldung/equalshashcode/entities/ComplexClass.java b/core-java/src/main/java/org/baeldung/equalshashcode/entities/ComplexClass.java
new file mode 100644
index 0000000000..d4a6a0f42e
--- /dev/null
+++ b/core-java/src/main/java/org/baeldung/equalshashcode/entities/ComplexClass.java
@@ -0,0 +1,65 @@
+package org.baeldung.equalshashcode.entities;
+
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+public class ComplexClass {
+
+ private List> genericList;
+ private Set integerSet;
+
+ public ComplexClass(ArrayList> genericArrayList, HashSet integerHashSet) {
+ super();
+ this.genericList = genericArrayList;
+ this.integerSet = integerHashSet;
+ }
+
+ @Override
+ public int hashCode() {
+ final int prime = 31;
+ int result = 1;
+ result = prime * result + ((genericList == null) ? 0 : genericList.hashCode());
+ result = prime * result + ((integerSet == null) ? 0 : integerSet.hashCode());
+ return result;
+ }
+
+ @Override
+ public boolean equals(Object obj) {
+ if (this == obj)
+ return true;
+ if (obj == null)
+ return false;
+ if (!(obj instanceof ComplexClass))
+ return false;
+ ComplexClass other = (ComplexClass) obj;
+ if (genericList == null) {
+ if (other.genericList != null)
+ return false;
+ } else if (!genericList.equals(other.genericList))
+ return false;
+ if (integerSet == null) {
+ if (other.integerSet != null)
+ return false;
+ } else if (!integerSet.equals(other.integerSet))
+ return false;
+ return true;
+ }
+
+ protected List> getGenericList() {
+ return genericList;
+ }
+
+ protected void setGenericArrayList(List> genericList) {
+ this.genericList = genericList;
+ }
+
+ protected Set getIntegerSet() {
+ return integerSet;
+ }
+
+ protected void setIntegerSet(Set integerSet) {
+ this.integerSet = integerSet;
+ }
+}
diff --git a/eclipse/src/main/java/org/baeldung/equalshashcode/entities/PrimitiveClass.java b/core-java/src/main/java/org/baeldung/equalshashcode/entities/PrimitiveClass.java
similarity index 100%
rename from eclipse/src/main/java/org/baeldung/equalshashcode/entities/PrimitiveClass.java
rename to core-java/src/main/java/org/baeldung/equalshashcode/entities/PrimitiveClass.java
diff --git a/eclipse/src/main/java/org/baeldung/equalshashcode/entities/Rectangle.java b/core-java/src/main/java/org/baeldung/equalshashcode/entities/Rectangle.java
similarity index 96%
rename from eclipse/src/main/java/org/baeldung/equalshashcode/entities/Rectangle.java
rename to core-java/src/main/java/org/baeldung/equalshashcode/entities/Rectangle.java
index 315ef41a12..1e1423f0b3 100644
--- a/eclipse/src/main/java/org/baeldung/equalshashcode/entities/Rectangle.java
+++ b/core-java/src/main/java/org/baeldung/equalshashcode/entities/Rectangle.java
@@ -11,13 +11,11 @@ public class Rectangle extends Shape {
@Override
public double area() {
- // A = w * l
return width * length;
}
@Override
public double perimeter() {
- // P = 2(w + l)
return 2 * (width + length);
}
diff --git a/eclipse/src/main/java/org/baeldung/equalshashcode/entities/Shape.java b/core-java/src/main/java/org/baeldung/equalshashcode/entities/Shape.java
similarity index 100%
rename from eclipse/src/main/java/org/baeldung/equalshashcode/entities/Shape.java
rename to core-java/src/main/java/org/baeldung/equalshashcode/entities/Shape.java
diff --git a/eclipse/src/main/java/org/baeldung/equalshashcode/entities/Square.java b/core-java/src/main/java/org/baeldung/equalshashcode/entities/Square.java
similarity index 100%
rename from eclipse/src/main/java/org/baeldung/equalshashcode/entities/Square.java
rename to core-java/src/main/java/org/baeldung/equalshashcode/entities/Square.java
diff --git a/eclipse/src/test/java/org/baeldung/equalshashcode/entities/ComplexClassTest.java b/core-java/src/test/java/org/baeldung/equalshashcode/entities/ComplexClassTest.java
similarity index 90%
rename from eclipse/src/test/java/org/baeldung/equalshashcode/entities/ComplexClassTest.java
rename to core-java/src/test/java/org/baeldung/equalshashcode/entities/ComplexClassTest.java
index 09123e988b..75d96e5989 100644
--- a/eclipse/src/test/java/org/baeldung/equalshashcode/entities/ComplexClassTest.java
+++ b/core-java/src/test/java/org/baeldung/equalshashcode/entities/ComplexClassTest.java
@@ -22,11 +22,10 @@ public class ComplexClassTest {
strArrayListD.add("pqr");
ComplexClass dObject = new ComplexClass(strArrayListD, new HashSet(45, 67));
- // equals()
Assert.assertTrue(aObject.equals(bObject) && bObject.equals(aObject));
- // hashCode()
+
Assert.assertTrue(aObject.hashCode() == bObject.hashCode());
- // non-equal objects are not equals() and have different hashCode()
+
Assert.assertFalse(aObject.equals(dObject));
Assert.assertFalse(aObject.hashCode() == dObject.hashCode());
}
diff --git a/eclipse/src/test/java/org/baeldung/equalshashcode/entities/PrimitiveClassTest.java b/core-java/src/test/java/org/baeldung/equalshashcode/entities/PrimitiveClassTest.java
similarity index 84%
rename from eclipse/src/test/java/org/baeldung/equalshashcode/entities/PrimitiveClassTest.java
rename to core-java/src/test/java/org/baeldung/equalshashcode/entities/PrimitiveClassTest.java
index feb04d65ff..16f25ae021 100644
--- a/eclipse/src/test/java/org/baeldung/equalshashcode/entities/PrimitiveClassTest.java
+++ b/core-java/src/test/java/org/baeldung/equalshashcode/entities/PrimitiveClassTest.java
@@ -12,11 +12,10 @@ public class PrimitiveClassTest {
PrimitiveClass bObject = new PrimitiveClass(false, 2);
PrimitiveClass dObject = new PrimitiveClass(true, 2);
- // equals()
Assert.assertTrue(aObject.equals(bObject) && bObject.equals(aObject));
- // hashCode()
+
Assert.assertTrue(aObject.hashCode() == bObject.hashCode());
- // non-equal objects are not equals() and have different hashCode()
+
Assert.assertFalse(aObject.equals(dObject));
Assert.assertFalse(aObject.hashCode() == dObject.hashCode());
}
diff --git a/eclipse/src/test/java/org/baeldung/equalshashcode/entities/SquareClassTest.java b/core-java/src/test/java/org/baeldung/equalshashcode/entities/SquareClassTest.java
similarity index 84%
rename from eclipse/src/test/java/org/baeldung/equalshashcode/entities/SquareClassTest.java
rename to core-java/src/test/java/org/baeldung/equalshashcode/entities/SquareClassTest.java
index 53ca199405..52d024a696 100644
--- a/eclipse/src/test/java/org/baeldung/equalshashcode/entities/SquareClassTest.java
+++ b/core-java/src/test/java/org/baeldung/equalshashcode/entities/SquareClassTest.java
@@ -15,11 +15,10 @@ public class SquareClassTest {
Square dObject = new Square(20, Color.BLUE);
- // equals()
Assert.assertTrue(aObject.equals(bObject) && bObject.equals(aObject));
- // hashCode()
+
Assert.assertTrue(aObject.hashCode() == bObject.hashCode());
- // non-equal objects are not equals() and have different hashCode()
+
Assert.assertFalse(aObject.equals(dObject));
Assert.assertFalse(aObject.hashCode() == dObject.hashCode());
}
diff --git a/eclipse/src/main/java/org/baeldung/equalshashcode/entities/ComplexClass.java b/eclipse/src/main/java/org/baeldung/equalshashcode/entities/ComplexClass.java
deleted file mode 100644
index 3f7723facd..0000000000
--- a/eclipse/src/main/java/org/baeldung/equalshashcode/entities/ComplexClass.java
+++ /dev/null
@@ -1,63 +0,0 @@
-package org.baeldung.equalshashcode.entities;
-
-import java.util.ArrayList;
-import java.util.HashSet;
-
-public class ComplexClass {
-
- private ArrayList> genericArrayList;
- private HashSet integerHashSet;
-
- public ComplexClass(ArrayList> genericArrayList, HashSet integerHashSet) {
- super();
- this.genericArrayList = genericArrayList;
- this.integerHashSet = integerHashSet;
- }
-
- @Override
- public int hashCode() {
- final int prime = 31;
- int result = 1;
- result = prime * result + ((genericArrayList == null) ? 0 : genericArrayList.hashCode());
- result = prime * result + ((integerHashSet == null) ? 0 : integerHashSet.hashCode());
- return result;
- }
-
- @Override
- public boolean equals(Object obj) {
- if (this == obj)
- return true;
- if (obj == null)
- return false;
- if (!(obj instanceof ComplexClass))
- return false;
- ComplexClass other = (ComplexClass) obj;
- if (genericArrayList == null) {
- if (other.genericArrayList != null)
- return false;
- } else if (!genericArrayList.equals(other.genericArrayList))
- return false;
- if (integerHashSet == null) {
- if (other.integerHashSet != null)
- return false;
- } else if (!integerHashSet.equals(other.integerHashSet))
- return false;
- return true;
- }
-
- protected ArrayList> getGenericArrayList() {
- return genericArrayList;
- }
-
- protected void setGenericArrayList(ArrayList> genericArrayList) {
- this.genericArrayList = genericArrayList;
- }
-
- protected HashSet getIntegerHashSet() {
- return integerHashSet;
- }
-
- protected void setIntegerHashSet(HashSet integerHashSet) {
- this.integerHashSet = integerHashSet;
- }
-}
diff --git a/pom.xml b/pom.xml
index 33162777b7..37ed734567 100644
--- a/pom.xml
+++ b/pom.xml
@@ -132,6 +132,7 @@
wicket
xstream
java-cassandra
+ annotations
diff --git a/spring-data-neo4j/README.md b/spring-data-neo4j/README.md
index e62c69f8b9..0f13d9dbc9 100644
--- a/spring-data-neo4j/README.md
+++ b/spring-data-neo4j/README.md
@@ -1,7 +1,7 @@
## Spring Data Neo4j
### Relevant Articles:
-- [Introduction to Spring Data Neo4j](http://www.baeldung.com/spring-data-neo4j-tutorial)
+- [Introduction to Spring Data Neo4j](http://www.baeldung.com/spring-data-neo4j-intro)
### Build the Project with Tests Running
```