动手动脑：

 

 

 

源程序：

public class FuGai {

 

       public static void main(String[] args) {

              // TODO Auto-generated method stub

 

              B b=new B();

              b.shuChu();

           b.shuChuA();

       }

 

}

class A{

       public void shuChu(){

              System.out.println("A");

       }

}

 

class B extends A{

       public void shuChu(){

              System.out.println("B");

       }

       public void shuChuA(){

              super.shuChu();

       }

}

结果截图：