[JAVA-621] Flattened modules hierarchy
This commit is contained in:
dupirefr
8
core-java-modules/core-java-lang-oop-others/README.md
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8
core-java-modules/core-java-lang-oop-others/README.md
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## Core Java Lang OOP - Others
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This module contains articles about Object Oriented Programming (OOP) in Java
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### Relevant Articles:
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- [Object-Oriented-Programming Concepts in Java](https://www.baeldung.com/java-oop)
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- [Static and Dynamic Binding in Java](https://www.baeldung.com/java-static-dynamic-binding)
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- [Pass-By-Value as a Parameter Passing Mechanism in Java](https://www.baeldung.com/java-pass-by-value-or-pass-by-reference)
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16
core-java-modules/core-java-lang-oop-others/pom.xml
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16
core-java-modules/core-java-lang-oop-others/pom.xml
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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<parent>
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<artifactId>core-java-modules</artifactId>
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<groupId>com.baeldung.core-java-modules</groupId>
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<version>1.0.0-SNAPSHOT</version>
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</parent>
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<modelVersion>4.0.0</modelVersion>
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<artifactId>core-java-lang-oop-others</artifactId>
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<name>core-java-lang-oop-others</name>
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<packaging>jar</packaging>
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</project>
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package com.baeldung.binding;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/**
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* Created by madhumita.g on 25-07-2018.
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*/
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public class Animal {
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final static Logger logger = LoggerFactory.getLogger(Animal.class);
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public void makeNoise() {
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logger.info("generic animal noise");
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}
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public void makeNoise(Integer repetitions) {
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while(repetitions != 0) {
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logger.info("generic animal noise countdown " + repetitions);
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repetitions -= 1;
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}
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}
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}
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package com.baeldung.binding;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/**
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* Created by madhumita.g on 25-07-2018.
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*/
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public class AnimalActivity {
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final static Logger logger = LoggerFactory.getLogger(AnimalActivity.class);
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public static void sleep(Animal animal) {
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logger.info("Animal is sleeping");
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}
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public static void sleep(Dog dog) {
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logger.info("Cat is sleeping");
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}
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public static void main(String[] args) {
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Animal animal = new Animal();
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//calling methods of animal object
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animal.makeNoise();
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animal.makeNoise(3);
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//assigning a dog object to reference of type Animal
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Animal catAnimal = new Dog();
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catAnimal.makeNoise();
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// calling static function
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AnimalActivity.sleep(catAnimal);
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return;
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}
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}
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@@ -0,0 +1,18 @@
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package com.baeldung.binding;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/**
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* Created by madhumita.g on 25-07-2018.
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*/
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public class Dog extends Animal {
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final static Logger logger = LoggerFactory.getLogger(Dog.class);
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public void makeNoise() {
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logger.info("meow");
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}
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}
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package com.baeldung.oop;
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public class ArmoredCar extends Car {
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private int bulletProofWindows;
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public ArmoredCar(String type, String model, String color) {
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super(type, model, color);
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}
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public void remoteStartCar() {
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// this vehicle can be started by using a remote control
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}
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}
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package com.baeldung.oop;
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public class Car extends Vehicle {
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private String type;
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private String color;
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private int speed;
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private int numberOfGears;
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public Car(String type, String model, String color) {
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super(4, model);
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this.type = type;
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this.color = color;
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}
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public String getColor() {
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return color;
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}
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public void setColor(String color) {
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this.color = color;
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}
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public int getSpeed() {
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return speed;
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}
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public void setSpeed(int speed) {
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this.speed = speed;
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}
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public int increaseSpeed(int increment) {
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if (increment > 0) {
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this.speed += increment;
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} else {
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System.out.println("Increment can't be negative.");
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}
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return this.speed;
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}
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public int decreaseSpeed(int decrement) {
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if (decrement > 0 && decrement <= this.speed) {
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this.speed -= decrement;
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} else {
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System.out.println("Decrement can't be negative or greater than current speed.");
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}
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return this.speed;
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}
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public void openDoors() {
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// process to open the doors
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}
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@Override
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public void honk() {
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// produces car-specific honk
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}
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}
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@@ -0,0 +1,63 @@
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package com.baeldung.oop;
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import java.util.Date;
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public class GenericFile {
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private String name;
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private String extension;
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private Date dateCreated;
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private String version;
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private byte[] content;
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public GenericFile() {
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this.setDateCreated(new Date());
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}
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public String getName() {
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return name;
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}
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public void setName(String name) {
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this.name = name;
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}
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public String getExtension() {
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return extension;
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}
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public void setExtension(String extension) {
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this.extension = extension;
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}
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public Date getDateCreated() {
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return dateCreated;
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}
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public void setDateCreated(Date dateCreated) {
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this.dateCreated = dateCreated;
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}
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public String getVersion() {
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return version;
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}
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public void setVersion(String version) {
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this.version = version;
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}
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public byte[] getContent() {
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return content;
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}
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public void setContent(byte[] content) {
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this.content = content;
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}
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public String getFileInfo() {
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return "Generic File Impl";
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}
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public Object read() {
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return content;
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}
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}
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@@ -0,0 +1,41 @@
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package com.baeldung.oop;
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public class ImageFile extends GenericFile {
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private int height;
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private int width;
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public ImageFile(String name, int height, int width, byte[] content, String version) {
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this.setHeight(height);
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this.setWidth(width);
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this.setContent(content);
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this.setName(name);
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this.setVersion(version);
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this.setExtension(".jpg");
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}
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public int getHeight() {
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return height;
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}
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public void setHeight(int height) {
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this.height = height;
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}
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public int getWidth() {
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return width;
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}
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public void setWidth(int width) {
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this.width = width;
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}
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public String getFileInfo() {
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return "Image File Impl";
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}
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public String read() {
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return this.getContent()
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.toString();
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}
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}
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@@ -0,0 +1,44 @@
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package com.baeldung.oop;
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public class TextFile extends GenericFile {
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private int wordCount;
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public TextFile(String name, String content, String version) {
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String[] words = content.split(" ");
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this.setWordCount(words.length > 0 ? words.length : 1);
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this.setContent(content.getBytes());
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this.setName(name);
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this.setVersion(version);
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this.setExtension(".txt");
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}
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public int getWordCount() {
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return wordCount;
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}
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public void setWordCount(int wordCount) {
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this.wordCount = wordCount;
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}
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public String getFileInfo() {
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return "Text File Impl";
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}
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public String read() {
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return this.getContent()
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.toString();
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}
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public String read(int limit) {
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return this.getContent()
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.toString()
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.substring(0, limit);
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}
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public String read(int start, int stop) {
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return this.getContent()
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.toString()
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.substring(start, stop);
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}
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}
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@@ -0,0 +1,23 @@
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package com.baeldung.oop;
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public class Vehicle {
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private int wheels;
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private String model;
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public Vehicle(int wheels, String model) {
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this.wheels = wheels;
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this.model = model;
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}
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public void start() {
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// the process of starting the vehicle
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}
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public void stop() {
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// process to stop the vehicle
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}
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public void honk() {
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// produces a default honk
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}
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}
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@@ -0,0 +1,27 @@
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package com.baeldung.parameterpassing;
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public class NonPrimitives {
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public static void main(String[] args) {
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FooClass a = new FooClass(1);
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FooClass b = new FooClass(1);
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System.out.printf("Before Modification: a = %d and b = %d ", a.num, b.num);
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modify(a, b);
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System.out.printf("\nAfter Modification: a = %d and b = %d ", a.num, b.num);
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}
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public static void modify(FooClass a1, FooClass b1) {
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a1.num++;
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b1 = new FooClass(1);
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b1.num++;
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}
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}
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class FooClass {
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public int num;
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public FooClass(int num) {
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this.num = num;
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}
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}
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@@ -0,0 +1,17 @@
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package com.baeldung.parameterpassing;
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public class Primitives {
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public static void main(String[] args) {
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int x = 1;
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int y = 2;
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System.out.printf("Before Modification: x = %d and y = %d ", x, y);
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modify(x, y);
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System.out.printf("\nAfter Modification: x = %d and y = %d ", x, y);
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}
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public static void modify(int x1, int y1) {
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x1 = 5;
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y1 = 10;
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}
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}
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@@ -0,0 +1,95 @@
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package com.baeldung.binding;
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import ch.qos.logback.classic.Level;
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import ch.qos.logback.classic.Logger;
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import ch.qos.logback.classic.spi.LoggingEvent;
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import ch.qos.logback.core.Appender;
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import org.junit.After;
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import org.junit.Before;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import org.mockito.ArgumentCaptor;
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import org.mockito.Captor;
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import org.mockito.Mock;
|
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import org.mockito.junit.MockitoJUnitRunner;
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import org.slf4j.LoggerFactory;
|
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|
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import static org.hamcrest.CoreMatchers.is;
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import static org.junit.Assert.assertThat;
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import static org.mockito.Mockito.verify;
|
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|
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/**
|
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*https://gist.github.com/bloodredsun/a041de13e57bf3c6c040
|
||||
*/
|
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@RunWith(MockitoJUnitRunner.class)
|
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public class AnimalActivityUnitTest {
|
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@Mock
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private Appender mockAppender;
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@Captor
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private ArgumentCaptor<LoggingEvent> captorLoggingEvent;
|
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|
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@Before
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public void setup() {
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final Logger logger = (Logger) LoggerFactory.getLogger(Logger.ROOT_LOGGER_NAME);
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logger.addAppender(mockAppender);
|
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}
|
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|
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@After
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public void teardown() {
|
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final Logger logger = (Logger) LoggerFactory.getLogger(Logger.ROOT_LOGGER_NAME);
|
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logger.detachAppender(mockAppender);
|
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}
|
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|
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@Test
|
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public void givenAnimalReference__whenRefersAnimalObject_shouldCallFunctionWithAnimalParam() {
|
||||
|
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Animal animal = new Animal();
|
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|
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AnimalActivity.sleep(animal);
|
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|
||||
verify(mockAppender).doAppend(captorLoggingEvent.capture());
|
||||
|
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final LoggingEvent loggingEvent = captorLoggingEvent.getValue();
|
||||
|
||||
assertThat(loggingEvent.getLevel(), is(Level.INFO));
|
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|
||||
assertThat(loggingEvent.getFormattedMessage(),
|
||||
is("Animal is sleeping"));
|
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}
|
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|
||||
@Test
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public void givenDogReference__whenRefersCatObject_shouldCallFunctionWithAnimalParam() {
|
||||
|
||||
Dog dog = new Dog();
|
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|
||||
AnimalActivity.sleep(dog);
|
||||
|
||||
verify(mockAppender).doAppend(captorLoggingEvent.capture());
|
||||
|
||||
final LoggingEvent loggingEvent = captorLoggingEvent.getValue();
|
||||
|
||||
assertThat(loggingEvent.getLevel(), is(Level.INFO));
|
||||
|
||||
assertThat(loggingEvent.getFormattedMessage(),
|
||||
is("Cat is sleeping"));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenAnimaReference__whenRefersDogObject_shouldCallFunctionWithAnimalParam() {
|
||||
|
||||
Animal cat = new Dog();
|
||||
|
||||
AnimalActivity.sleep(cat);
|
||||
|
||||
verify(mockAppender).doAppend(captorLoggingEvent.capture());
|
||||
|
||||
final LoggingEvent loggingEvent = captorLoggingEvent.getValue();
|
||||
|
||||
assertThat(loggingEvent.getLevel(), is(Level.INFO));
|
||||
|
||||
assertThat(loggingEvent.getFormattedMessage(),
|
||||
is("Animal is sleeping"));
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,87 @@
|
||||
package com.baeldung.binding;
|
||||
|
||||
import ch.qos.logback.classic.Level;
|
||||
import ch.qos.logback.classic.Logger;
|
||||
import ch.qos.logback.classic.spi.LoggingEvent;
|
||||
import ch.qos.logback.core.Appender;
|
||||
import org.junit.After;
|
||||
import org.junit.Before;
|
||||
import org.junit.Test;
|
||||
import org.junit.runner.RunWith;
|
||||
import org.mockito.ArgumentCaptor;
|
||||
import org.mockito.Captor;
|
||||
import org.mockito.Mock;
|
||||
import org.mockito.junit.MockitoJUnitRunner;
|
||||
import org.slf4j.LoggerFactory;
|
||||
|
||||
import java.util.List;
|
||||
|
||||
import static org.hamcrest.CoreMatchers.is;
|
||||
import static org.junit.Assert.assertThat;
|
||||
import static org.mockito.Mockito.times;
|
||||
import static org.mockito.Mockito.verify;
|
||||
|
||||
/**
|
||||
* Created by madhumita.g on 01-08-2018.
|
||||
*/
|
||||
|
||||
@RunWith(MockitoJUnitRunner.class)
|
||||
public class AnimalUnitTest {
|
||||
@Mock
|
||||
private Appender mockAppender;
|
||||
@Captor
|
||||
private ArgumentCaptor<LoggingEvent> captorLoggingEvent;
|
||||
|
||||
@Before
|
||||
public void setup() {
|
||||
final Logger logger = (Logger) LoggerFactory.getLogger(Logger.ROOT_LOGGER_NAME);
|
||||
logger.addAppender(mockAppender);
|
||||
}
|
||||
|
||||
@After
|
||||
public void teardown() {
|
||||
final Logger logger = (Logger) LoggerFactory.getLogger(Logger.ROOT_LOGGER_NAME);
|
||||
logger.detachAppender(mockAppender);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void whenCalledWithoutParameters_shouldCallFunctionMakeNoiseWithoutParameters() {
|
||||
|
||||
Animal animal = new Animal();
|
||||
|
||||
animal.makeNoise();
|
||||
|
||||
verify(mockAppender).doAppend(captorLoggingEvent.capture());
|
||||
|
||||
final LoggingEvent loggingEvent = captorLoggingEvent.getValue();
|
||||
|
||||
assertThat(loggingEvent.getLevel(), is(Level.INFO));
|
||||
|
||||
assertThat(loggingEvent.getFormattedMessage(),
|
||||
is("generic animal noise"));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void whenCalledWithParameters_shouldCallFunctionMakeNoiseWithParameters() {
|
||||
|
||||
Animal animal = new Animal();
|
||||
|
||||
int testValue = 3;
|
||||
animal.makeNoise(testValue);
|
||||
|
||||
verify(mockAppender,times(3)).doAppend(captorLoggingEvent.capture());
|
||||
|
||||
final List<LoggingEvent> loggingEvents = captorLoggingEvent.getAllValues();
|
||||
|
||||
for(LoggingEvent loggingEvent : loggingEvents)
|
||||
{
|
||||
assertThat(loggingEvent.getLevel(), is(Level.INFO));
|
||||
|
||||
assertThat(loggingEvent.getFormattedMessage(),
|
||||
is("generic animal noise countdown "+testValue));
|
||||
|
||||
testValue--;
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
@@ -0,0 +1,62 @@
|
||||
package com.baeldung.binding;
|
||||
|
||||
import ch.qos.logback.classic.Level;
|
||||
import ch.qos.logback.classic.Logger;
|
||||
import ch.qos.logback.classic.spi.LoggingEvent;
|
||||
import ch.qos.logback.core.Appender;
|
||||
import org.junit.After;
|
||||
import org.junit.Before;
|
||||
import org.junit.Test;
|
||||
import org.junit.runner.RunWith;
|
||||
import org.mockito.ArgumentCaptor;
|
||||
import org.mockito.Captor;
|
||||
import org.mockito.Mock;
|
||||
import org.mockito.junit.MockitoJUnitRunner;
|
||||
import org.slf4j.LoggerFactory;
|
||||
|
||||
import static org.hamcrest.CoreMatchers.is;
|
||||
import static org.junit.Assert.assertThat;
|
||||
import static org.mockito.Mockito.verify;
|
||||
|
||||
/**
|
||||
* Created by madhumita.g on 01-08-2018.
|
||||
*/
|
||||
@RunWith(MockitoJUnitRunner.class)
|
||||
public class DogUnitTest {
|
||||
|
||||
@Mock
|
||||
private Appender mockAppender;
|
||||
|
||||
@Captor
|
||||
private ArgumentCaptor<LoggingEvent> captorLoggingEvent;
|
||||
|
||||
@Before
|
||||
public void setup() {
|
||||
final Logger logger = (Logger) LoggerFactory.getLogger(Logger.ROOT_LOGGER_NAME);
|
||||
logger.addAppender(mockAppender);
|
||||
}
|
||||
|
||||
@After
|
||||
public void teardown() {
|
||||
final Logger logger = (Logger) LoggerFactory.getLogger(Logger.ROOT_LOGGER_NAME);
|
||||
logger.detachAppender(mockAppender);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void makeNoiseTest() {
|
||||
|
||||
Dog dog = new Dog();
|
||||
|
||||
dog.makeNoise();
|
||||
|
||||
verify(mockAppender).doAppend(captorLoggingEvent.capture());
|
||||
|
||||
final LoggingEvent loggingEvent = captorLoggingEvent.getValue();
|
||||
|
||||
assertThat(loggingEvent.getLevel(), is(Level.INFO));
|
||||
|
||||
assertThat(loggingEvent.getFormattedMessage(),
|
||||
is("meow"));
|
||||
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,37 @@
|
||||
package com.baeldung.parameterpassing;
|
||||
|
||||
import org.junit.Assert;
|
||||
import org.junit.Test;
|
||||
|
||||
public class NonPrimitivesUnitTest {
|
||||
@Test
|
||||
public void whenModifyingObjects_thenOriginalObjectChanged() {
|
||||
Foo a = new Foo(1);
|
||||
Foo b = new Foo(1);
|
||||
|
||||
// Before Modification
|
||||
Assert.assertEquals(a.num, 1);
|
||||
Assert.assertEquals(b.num, 1);
|
||||
|
||||
modify(a, b);
|
||||
|
||||
// After Modification
|
||||
Assert.assertEquals(a.num, 2);
|
||||
Assert.assertEquals(b.num, 1);
|
||||
}
|
||||
|
||||
public static void modify(Foo a1, Foo b1) {
|
||||
a1.num++;
|
||||
|
||||
b1 = new Foo(1);
|
||||
b1.num++;
|
||||
}
|
||||
}
|
||||
|
||||
class Foo {
|
||||
public int num;
|
||||
|
||||
public Foo(int num) {
|
||||
this.num = num;
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,28 @@
|
||||
package com.baeldung.parameterpassing;
|
||||
|
||||
import org.junit.Assert;
|
||||
import org.junit.Test;
|
||||
|
||||
public class PrimitivesUnitTest {
|
||||
@Test
|
||||
public void whenModifyingPrimitives_thenOriginalValuesNotModified() {
|
||||
|
||||
int x = 1;
|
||||
int y = 2;
|
||||
|
||||
// Before Modification
|
||||
Assert.assertEquals(x, 1);
|
||||
Assert.assertEquals(y, 2);
|
||||
|
||||
modify(x, y);
|
||||
|
||||
// After Modification
|
||||
Assert.assertEquals(x, 1);
|
||||
Assert.assertEquals(y, 2);
|
||||
}
|
||||
|
||||
public static void modify(int x1, int y1) {
|
||||
x1 = 5;
|
||||
y1 = 10;
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user