package com.mouse.test.clonedemo.two;
/**
* Created by Mahone Wu on 2018/10/19.
*/
public class Dog implements Cloneable {
private String type;
private String color;
private int age;
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
public String getColor() {
return color;
}
public void setColor(String color) {
this.color = color;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
@Override
protected Object clone() throws CloneNotSupportedException {
return super.clone();
}
}
package com.mouse.test.clonedemo.two;
/**
* Created by Mahone Wu on 2018/10/19.
*/
public class Person implements Cloneable {
private String name;
private int age;
private Dog dog;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public Dog getDog() {
return dog;
}
public void setDog(Dog dog) {
this.dog = dog;
}
@Override
protected Object clone() throws CloneNotSupportedException {
//淺克隆
Object object = super.clone();
return object;
//深克隆
/*Person newPerson = (Person) super.clone();
Dog dog = (Dog) newPerson.getDog().clone();
newPerson.setDog(dog);
return newPerson;*/
}
@Override
public String toString() {
final StringBuffer sb = new StringBuffer("Person{");
sb.append("name='").append(name).append('\'');
sb.append(", age=").append(age);
sb.append(", dog=").append(dog);
sb.append('}');
return sb.toString();
}
}
package com.mouse.test.clonedemo.two;
/**
* Created by Mahone Wu on 2018/10/19.
*/
public class Main {
public static void main(String[] args)throws Exception {
Person person = new Person();
person.setAge(22);
person.setName("test");
Dog dog = new Dog();
dog.setAge(1);
dog.setColor("黃色");
dog.setType("x dog");
person.setDog(dog);
Person clonePerson = (Person) person.clone();
clonePerson.setAge(1);
clonePerson.setName("new person");
System.out.println(person);
System.out.println(clonePerson);
}
}
淺
image.png
深
image.png
深克隆的另外一種方式
package com.mouse.test.clonedemo.four;
import java.io.*;
/**
* Created by Mahone Wu on 2018/10/19.
*/
public class Person implements Serializable{
private String name;
private int age;
private Dog dog;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public Dog getDog() {
return dog;
}
public void setDog(Dog dog) {
this.dog = dog;
}
protected Object deepCopy() {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
try {
ObjectOutputStream oos = new ObjectOutputStream(bos);
oos.writeObject(this);
ByteArrayInputStream bis = new ByteArrayInputStream(bos.toByteArray());
ObjectInputStream ois = new ObjectInputStream(bis);
return ois.readObject();
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
@Override
public String toString() {
final StringBuffer sb = new StringBuffer("Person{");
sb.append("name='").append(name).append('\'');
sb.append(", age=").append(age);
sb.append(", dog=").append(dog);
sb.append('}');
return sb.toString();
}
}
package com.mouse.test.clonedemo.four;
import java.io.Serializable;
/**
* Created by Mahone Wu on 2018/10/19.
*/
public class Dog implements Serializable {
private String type;
private String color;
private int age;
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
public String getColor() {
return color;
}
public void setColor(String color) {
this.color = color;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
}
package com.mouse.test.clonedemo.four;
/**
* Created by Mahone Wu on 2018/10/19.
*/
public class Main {
public static void main(String[] args)throws Exception {
Person person = new Person();
person.setAge(22);
person.setName("test-1");
Dog dog = new Dog();
dog.setAge(1);
dog.setColor("黃色");
dog.setType("x dog");
person.setDog(dog);
Person clonePerson = (Person) person.deepCopy();
clonePerson.setAge(1);
clonePerson.setName("new person");
System.out.println(person);
System.out.println(clonePerson);
}
}
image.png
