23种设计模式-原型模式

package factory.prototype.Demo01;

import java.util.Date;

//客户端  实现克隆
//
public class Bili {
    public static void main(String[] args) throws CloneNotSupportedException {
        //原型对象
        Date date = new Date();
        Video v1 = new Video("来呀", date);
        Video v2 = (Video) v1.clone();


        System.out.println("v1=>"+v1);
        System.out.println("v2=>"+v2);
        System.out.println("=======================");
        date.setTime(1232132132);
        System.out.println("v1=>"+v1);
        System.out.println("v2=>"+v2);


    }
}

/*
  // v1可以克隆 v2

        Video v2 = (Video) v1.clone(); //克隆出来的对象和原来的一模一样
        System.out.println("v2=>"+v2);
        System.out.println("v2=>hash:"+v2.hashCode());

        v2.setName("clone:哈呀！");

        System.out.println(v2);
*/

package factory.prototype.demo02;

import java.util.Date;

/*
    怎样实现克隆
    1、实现一个接口    Cloneable
    2、重写一个方法   clone()
*/

//Video: 视频原型
public class Video implements Cloneable {//无良，克隆他人作品
     private  String name;
     private Date createTime;

     //改变克隆的方法
    @Override
    protected Object clone() throws CloneNotSupportedException {
        Object obj = super.clone();
        Video v = (Video) obj;

        //实现深克隆    除此以外还可以进行序列化 反序列化
        v.createTime = (Date) this.createTime.clone();//将这个对象的属性也进行克隆

        return obj;
    }

    public Video() {
    }

    public Video(String name, Date createTime) {
        this.name = name;
        this.createTime = createTime;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Date getCreateTime() {
        return createTime;
    }

    public void setCreateTime(Date createTime) {
        this.createTime = createTime;
    }

    @Override
    public String  toString() {
        return "Video{" +
                "name=‘" + name + ‘\‘‘ +
                ", createTime=" + createTime +
                ‘}‘;
    }
}