JAVA实现深拷贝浅拷贝_Javacloneable接口实现深拷贝和浅拷贝

深拷贝&＃xff1a;完全开辟出一个新的对象

浅拷贝&＃xff1a;引用同一对象的地址

浅拷贝实现&＃xff1a;

//默认为浅克隆

&＃64;Override

protected Object clone() throws CloneNotSupportedException {

return super.clone();

}

深拷贝实现&＃xff1a;

&＃64;Override

protected Object clone() throws CloneNotSupportedException {

Person person &＃61; (Person) super.clone();

person.setPhone(new Phone(person.getPhone().getBrand()));

return person;

}

Person类

package test;

import javax.imageio.plugins.jpeg.JPEGImageReadParam;

import java.io.Serializable;

import java.util.Objects;

/**

* &＃64;Author 小浩

* &＃64;Date 2020/4/2 12:09

* &＃64;Version 1.0

**/

public class Person implements Serializable,Cloneable{

Phone phone;

&＃64;Override

protected Object clone() throws CloneNotSupportedException {

Person person &＃61; (Person) super.clone();

person.setPhone(new Phone(person.getPhone().getBrand()));

return person;

}

public Person(Phone phone) {

this.phone &＃61; phone;

}

public Person(){

}

public Phone getPhone() {

return phone;

}

public void setPhone(Phone phone) {

this.phone &＃61; phone;

}

&＃64;Override

public String toString() {

return "Person{" &＃43;

"phone&＃61;" &＃43; phone &＃43;

&＃39;}&＃39;;

}

}

Phone类

package test;

/**

* &＃64;Author 小浩

* &＃64;Date 2020/4/2 14:23

* &＃64;Version 1.0

**/

public class Phone {

private String brand;

public Phone(String brand) {

this.brand &＃61; brand;

}

public String getBrand() {

return brand;

}

public void setBrand(String brand) {

this.brand &＃61; brand;

}

&＃64;Override

public String toString() {

return "Phone{" &＃43;

"brand&＃61;&＃39;" &＃43; brand &＃43; &＃39;\&＃39;&＃39; &＃43;

&＃39;}&＃39;;

}

}

测试类&＃xff1a;

package test;

import com.sun.xml.internal.ws.api.model.wsdl.WSDLOutput;

import java.util.*;

/**

* &＃64;Author 小浩

* &＃64;Date 2020/4/1 19:39

* &＃64;Version 1.0

**/

public class Main {

public static void main(String[] args) {

Person p &＃61; new Person(new Phone("苹果"));

Person person &＃61; null;

try {

person&＃61; (Person) p.clone();

} catch (CloneNotSupportedException e) {

e.printStackTrace();

}

System.out.println(p);

System.out.println(person);

System.out.println("设置其中一个为小米 ");

person.getPhone().setBrand("小米");

System.out.println(p);

System.out.println(person);

}

}

深拷贝输出结果&＃xff1a;

浅拷贝输出结果&＃xff1a;