推广网站wap端怎么做,做微网站用什么框架,国外域名注册平台,专业制作标书原型模式用于克隆复杂对象#xff0c;由于new一个实例对象会消耗大部分时间#xff0c;所以原型模式可以节约大量时间 1 public class Sheep implements Cloneable{2 private String name;3 private Date birth;4 public Sheep(String name, Date birth) {5 … 原型模式用于克隆复杂对象由于new一个实例对象会消耗大部分时间所以原型模式可以节约大量时间 1 public class Sheep implements Cloneable{2 private String name;3 private Date birth;4 public Sheep(String name, Date birth) {5 this.name name;6 this.birth birth;7 }8 Override9 protected Object clone(){
10 Sheep obj null;
11 try {
12 obj (Sheep) super.clone();
13 //深复制
14 // obj.birth (Date) this.birth.clone();
15 } catch (CloneNotSupportedException e) {
16 e.printStackTrace();
17 }
18 return obj;
19 }
20 public String getName() {
21 return name;
22 }
23 public void setName(String name) {
24 this.name name;
25 }
26 public Date getBirth() {
27 return birth;
28 }
29 public void setBirth(Date birth) {
30 this.birth birth;
31 }
32
33 }
import java.util.Date;public class Client {public static void main(String[] args) {Date date new Date(1515529952L);Sheep s1 new Sheep(s1,date);Sheep s2 (Sheep) s1.clone();System.out.println(s1.getBirth());System.out.println(s2.getBirth());date.setTime(15L);//修改后System.out.println(s1.getBirth());System.out.println(s2.getBirth());}
} 1 浅复制2 Sun Jan 18 20:58:49 CST 19703 Sun Jan 18 20:58:49 CST 19704 //修改后5 Thu Jan 01 08:00:00 CST 19706 Thu Jan 01 08:00:00 CST 19707 深复制8 Sun Jan 18 20:58:49 CST 19709 Sun Jan 18 20:58:49 CST 1970
10 修改后
11 Thu Jan 01 08:00:00 CST 1970 //只对s1修改
12 Sun Jan 18 20:58:49 CST 1970
