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Merge branch 'master' of https://github.com/AlexFlorinHriscu/tutorials

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Jonathan Cook 2020-02-16 13:34:40 +01:00
parent 94fb9a5b9b af1fd4e1b0
commit ddede5f4d8
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5
core-java-modules/core-java-arrays-3/README.md Normal file
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## Core Java Arrays (Part 3)
This module contains articles about Java arrays
## Relevant Articles

31
core-java-modules/core-java-arrays-3/pom.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<artifactId>core-java-arrays-3</artifactId>
<version>0.1.0-SNAPSHOT</version>
<name>core-java-arrays-3</name>
<packaging>jar</packaging>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-java</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../../parent-java</relativePath>
</parent>
<dependencies>
<dependency>
<groupId>org.assertj</groupId>
<artifactId>assertj-core</artifactId>
<version>${assertj.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
<properties>
<assertj.version>3.14.0</assertj.version>
</properties>
</project>

100
core-java-modules/core-java-arrays-3/src/test/java/com/baeldung/arrays/deepequals/ArraysDeepEqualsUnitTest.java Normal file
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package com.baeldung.arrays.deepequals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import java.util.Arrays;
import java.util.Objects;
import org.junit.jupiter.api.Test;
public class ArraysDeepEqualsUnitTest {
class Person {
private int id;
private String name;
private int age;
Person(int id, String name, int age) {
this.id = id;
this.name = name;
this.age = age;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (!(obj instanceof Person))
return false;
Person person = (Person) obj;
return id == person.id && name.equals(person.name) && age == person.age;
}
@Override
public int hashCode() {
return Objects.hash(id, name, age);
}
}
@Test
void givenTwoUnidimensionalObjectTypeArrays_whenUsingEqualsAndDeepEquals_thenBothShouldReturnTrue() {
Object[] anArray = new Object[] { "string1", "string2", "string3" };
Object[] anotherArray = new Object[] { "string1", "string2", "string3" };
assertTrue(Arrays.equals(anArray, anotherArray));
assertTrue(Arrays.deepEquals(anArray, anotherArray));
}
@Test
void givenTwoUnidimensionalObjectTypeArraysWithNullElements_whenUsingEqualsAndDeepEquals_thenBothShouldReturnTrue() {
Object[] anArray = new Object[] { "string1", null, "string3" };
Object[] anotherArray = new Object[] { "string1", null, "string3" };
assertTrue(Arrays.equals(anArray, anotherArray));
assertTrue(Arrays.deepEquals(anArray, anotherArray));
}
@Test
void givenTwoUnidimensionalObjectTypeArraysWithNestedElements_whenUsingEqualsAndDeepEquals_thenShouldReturnDifferently() {
Object[] anArray = new Object[] { "string1", null, new String[] { "nestedString1", "nestedString2" } };
Object[] anotherArray = new Object[] { "string1", null, new String[] { "nestedString1", "nestedString2" } };
assertFalse(Arrays.equals(anArray, anotherArray));
assertTrue(Arrays.deepEquals(anArray, anotherArray));
}
@Test
void givenTwoMultidimensionalPrimitiveTypeArrays_whenUsingEqualsAndDeepEquals_thenBothShouldReturnDifferently() {
int[][] anArray = { { 1, 2, 3 }, { 4, 5, 6, 9 }, { 7 } };
int[][] anotherArray = { { 1, 2, 3 }, { 4, 5, 6, 9 }, { 7 } };
assertFalse(Arrays.equals(anArray, anotherArray));
assertTrue(Arrays.deepEquals(anArray, anotherArray));
}
@Test
void givenTwoMultidimensionalObjectTypeArrays_whenUsingEqualsAndDeepEquals_thenBothShouldReturnDifferently() {
Person personArray1[][] = { { new Person(1, "John", 22), new Person(2, "Mike", 23) },
{ new Person(3, "Steve", 27), new Person(4, "Gary", 28) } };
Person personArray2[][] = { { new Person(1, "John", 22), new Person(2, "Mike", 23) },
{ new Person(3, "Steve", 27), new Person(4, "Gary", 28) } };
assertFalse(Arrays.equals(personArray1, personArray2));
assertTrue(Arrays.deepEquals(personArray1, personArray2));
}
@Test
void givenTwoMultidimensionalObjectTypeArrays_whenUsingDeepEqualsFromObjectsAndArraysClasses_thenBothShouldReturnTrue() {
Person personArray1[][] = { { new Person(1, "John", 22), new Person(2, "Mike", 23) },
{ new Person(3, "Steve", 27), new Person(4, "Gary", 28) } };
Person personArray2[][] = { { new Person(1, "John", 22), new Person(2, "Mike", 23) },
{ new Person(3, "Steve", 27), new Person(4, "Gary", 28) } };
assertTrue(Objects.deepEquals(personArray1, personArray2));
assertTrue(Arrays.deepEquals(personArray1, personArray2));
}
}

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core-java-modules/pom.xml
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<module>core-java-annotations</module>
<module>core-java-arrays</module>
<module>core-java-arrays-2</module>
<module>core-java-arrays-3</module>
<module>core-java-collections</module>
<module>core-java-collections-2</module>