课堂练习

 1 package com.aaa.day333;
 2 //普通狗吃饭说话
 3 public abstract class Dog {
 4     public abstract void eat();
 5     public abstract void speak();
 6 }
 7 --------------------------------------------------
 8 package com.aaa.day333;
 9 //缉毒狗
10 public interface JiDu {
11     public abstract void jidu();
12 }
13 ---------------------------------------------------
14     
15 package com.aaa.day333;
16 
17 public class JiDuDog extends Dog implements JiDu{
18 
19     @Override
20     public void jidu() {
21         // TODO Auto-generated method stub
22         System.out.println("缉毒犬在缉毒");
23     }
24 
25     @Override
26     public void eat() {
27         // TODO Auto-generated method stub
28         System.out.println("趴着吃");
29     }
30 
31     @Override
32     public void speak() {
33         // TODO Auto-generated method stub
34         System.out.println("站着叫");
35     }
36     
37 }
38 -----------------------------------------------------------------
39 
40 
41 public class Dogg extends Dog{
42     public void eat() {
43         // TODO Auto-generated method stub
44         System.out.println("普通的狗坐着吃");
45     }
46 
47     @Override
48     public void speak() {
49         // TODO Auto-generated method stub
50         System.out.println("普通的狗笑声叫");
51     }
52 }
53 --------------------------------------------------------------------
54 package com.aaa.day333;
55 //测试
56 public class Test {
57 
58     public static void main(String[] args) {
59         // TODO Auto-generated method stub
60         Dogg d= new Dogg();
61         d.speak();
62         JiDuDog jd=new JiDuDog();
63         jd.speak();
64         jd.jidu();
65     }
66 
67 }
68 ----------------------------------------------------------------------