西游记之设计模式原则——开放-封闭原则

 1 package kaifangfenbi;
 2 
 3 class Monkey {
 4     public void PaShu() {
 5         System.out.println("我是猴子，我会爬树!");
 6     }
 7 }
 8 
 9 // 六耳猕猴
10 class LiuErMiHou extends Monkey {
11     public void ChangSheng() {
12         System.out.println("俺老孙可以长生不老！");
13     }
14 }
15 
16 public class KaiFangFenBi {
17 
18     public static void main(String[] args) {
19         // TODO Auto-generated method stub
20 
21         LiuErMiHou liuErMiHou = new LiuErMiHou();
22         System.out.println("六耳猕猴：");
23         liuErMiHou.PaShu();
24         liuErMiHou.ChangSheng();
25     }
26 }

 1 package kaifangfenbi;
 2 
 3 class Monkey {
 4     public void PaShu() {
 5         System.out.println("我是猴子，我会爬树!");
 6     }
 7 }
 8 
 9 // 六耳猕猴
10 class LiuErMiHou extends Monkey {
11     public void ChangSheng() {
12         System.out.println("俺老孙可以长生不老！");
13     }
14 }
15 
16 class SunWuKong extends LiuErMiHou {
17     public void QuJing() {
18         System.out.println("俺老孙是去西天拜佛求经的！");
19     }
20 }
21 
22 public class KaiFangFenBi {
23 
24     public static void main(String[] args) {
25         // TODO Auto-generated method stub
26 
27         LiuErMiHou liuErMiHou = new LiuErMiHou();
28         System.out.println("六耳猕猴：");
29         liuErMiHou.PaShu();
30         liuErMiHou.ChangSheng();
31 
32         System.out.println("齐天大圣：");
33         SunWuKong sunWuKong = new SunWuKong();
34         sunWuKong.PaShu();
35         sunWuKong.ChangSheng();
36         sunWuKong.QuJing();
37     }
38 }