多态 接口

 1 package PC;
 2
 3 public class computer {
 4
 5     private String pinpai;
 6
 7     private ICPU cpu;
 8
 9     private Idisplaycard displaycard;
10
11     public String getPinpai() {
12         return pinpai;
13     }
14
15     public void setPinpai(String pinpai) {
16         this.pinpai = pinpai;
17     }
18
19     public ICPU getCpu() {
20         return cpu;
21     }
22
23     public void setCpu(ICPU cpu) {
24         this.cpu = cpu;
25     }
26
27     public Idisplaycard getDisplaycard() {
28         return displaycard;
29     }
30
31     public void setDisplaycard(Idisplaycard displaycard) {
32         this.displaycard = displaycard;
33     }
34
35     public void run()
36     {
37         this.cpu.command();
38
39         this.displaycard.display();
40
41         System.out.println("我组装的"+pinpai+"电脑开始运行");
42     }
43     public computer(String pinpai) {
44         super();
45         this.pinpai = pinpai;
46         this.cpu = cpu;
47         this.displaycard = displaycard;
48     }
49
50     public static void main(String []args)
51     {
52         System.out.println();
53         computer c1 = new computer("hp");
54         AMD a1 = new AMD();
55         c1.setCpu(a1);
56         c1.setDisplaycard(new Nivdia());
57         c1.run();
58
59         System.out.println();
60         computer c2 = new computer("华硕");
61         c2.setCpu(new intel());
62         c2.setDisplaycard(new Nivdia());
63         c2.run();
64
65         System.out.println();
66         AMD2 a2 = new AMD2();
67         computer c3 = new computer("acer");
68         c3.setCpu(a2);
69         c3.setDisplaycard(a2);
70         c3.run();
71
72         System.out.println();
73         AMD3 a3 = new AMD3();
74         computer c4 = new computer("acer");
75         c4.setCpu(a3);
76         c4.setDisplaycard(a3);
77         c4.run();
78     }
79 }

 1 package PC;
 2
 3 public class ATI implements Idisplaycard {
 4
 5     @Override
 6     public void display() {
 7
 8         System.out.println("我是A卡");
 9     }
10 }

 1 package PC;
 2
 3 public class AMD implements ICPU {
 4
 5     @Override
 6     public void command() {
 7
 8     System.out.println("我是AMD的CPU");
 9
10     }
11 }