学步园

 1 interface A{
 2     public String AUTHER="Mihchael";
 3     public void printA();
 4 }
 5 interface B{
 6     public void printB();
 7 }
 8 interface C extends A,B{
 9     public void printC();
10 }
11 class X implements C{
12     public void printA(){
13         System.out.println("A....");
14     }
15     public void printB(){
16         System.out.println("B.....");
17     }
18     public void printC(){
19         System.out.println("C......");
20     }
21 }
22 public class test1 {
23     public static void main(String args[]){
24         X x=new X();
25         x.printA();
26         x.printB();
27         x.printC();
28     }
29 }