创建CPU的接口：

1 package org.hanqi.pn0120;
2  
3 //cpu的接口
4 public interface ICPU {           　　//创建的接口名一般前面加I
5                                      //接口的关键字  interface
6     //控制
7     public void command();    
8 
9 }

创建显卡的接口：

1 package org.hanqi.pn0120;
2 
3 public interface IDisplayCard {
4     
5     //显示
6     public void display();
7 }

创建Intel类与ICPU相关联：

 1 package org.hanqi.pn0120;
 2 
 3 public class Intel implements ICPU {                 //相关联的关键字 implements
 4 
 5     @Override
 6     public void command() {
 7 
 8         System.out.println("我是Intel的CPU");
 9     }
10 }

创建AMD类与ICPU相关联：

 1 package org.hanqi.pn0120;
 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 }

创建AMD2类与ICPU相关联：

 1 package org.hanqi.pn0120;
 2 
 3 public class AMD2 implements ICPU, IDisplayCard {
 4 
 5     @Override
 6     public void display() {
 7         
 8         System.out.println("AMD的CPU显卡");
 9 
10     }
11 
12     @Override
13     public void command() {
14         
15         System.out.println("AMD的自带显卡的CPU");
16     }
17 }

创建AMD3类与ICPU相关联：

 1 package org.hanqi.pn0120;
 2 
 3 public class AMD3 extends AMD implements IDisplayCard {
 4 
 5     @Override
 6     public void display() {
 7         
 8         System.out.println("继承了AMD的一代CPU，增加了显卡功能");
 9     }
10 }

创建Ati类与IDisplayCard相关联：

 1 package org.hanqi.pn0120;
 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     }
11 }

创建Nivdia类与IDisplayCard相关联：

 1 package org.hanqi.pn0120;
 2 
 3 public class Nivdia implements IDisplayCard {
 4 
 5     @Override
 6     public void display() {
 7         
 8         System.out.println("我是N卡");
 9 
10     }
11 }

最后创建Computer类进行输出运算：

 1 package org.hanqi.pn0120;
 2 
 3 public class Computer {
 4     
 5     //品牌
 6     private String pinpai;
 7     
 8     //CPU
 9     private ICPU cpu;
10     
11     //显卡
12     private IDisplayCard displaycard;
13 
14     public String getPinpai() {
15         return pinpai;
16     }
17 
18     public void setPinpai(String pinpai) {
19         this.pinpai = pinpai;
20     }
21 
22     public ICPU getCpu() {
23         return cpu;
24     }
25 
26     public void setCpu(ICPU cpu) {
27         this.cpu = cpu;
28     }
29 
30     public IDisplayCard getDisplaycard() {
31         return displaycard;
32     }
33 
34     public void setDisplaycard(IDisplayCard displaycard) {
35         this.displaycard = displaycard;
36     }
37     
38     //运行
39     public void run()
40     {
41         //cpu
42         this.cpu.command();
43         //显卡
44         this.displaycard.display();
45         System.out.println("我组装的"+pinpai+"电脑开始运行");
46     }
47     
48     public Computer(String pinpai)
49     {
50         super();   
51         this.pinpai=pinpai;
52     }
53     public static void main(String[] args)
54     {
55         //组装电脑
56         Computer c1 = new Computer("hp");
57         
58         //第一种
59         AMD a1 = new AMD();        
60         c1.setCpu(a1);
61         //第二种  匿名类 new Ati()
62         c1.setDisplaycard(new Ati());        
63         c1.run();
64         
65         System.out.println();
66         
67         Computer c2 = new Computer("华硕");
68         c2.setCpu(new Intel());
69         c2.setDisplaycard(new Nivdia());
70         c2.run();
71         
72         System.out.println();
73         AMD2 a2 = new AMD2();
74         Computer c3 = new Computer("acer");
75         c3.setCpu(a2);
76         c3.setDisplaycard(a2);
77         c3.run();
78         
79         System.out.println();
80         AMD3 a3 = new AMD3();
81         Computer c4 = new Computer("acer");
82         c4.setCpu(a3);
83         c4.setDisplaycard(a3);
84         c4.run();
85     }
86 }

运行结果为：

附思维导图：