5例子4.txt

这是一本java基础教程 对新手上路有很大帮助

class A{
    protected double x=8.0,y=0.888888;  
    public void speak(){
       System.out.println("我喜欢NBA");
    }
    public void cry(){
       y=x+y;   
       System.out.printf("y=%f\n",y);
    }
}
class B extends A{
    int y=100,z;
    public void speak(){
       z=2*y;
       System.out.println("I love This Game");
       System.out.printf("y=%d,z=%d",y,z);
    } 
}
class Example5_4{
    public static void main(String args[ ]){
       B b=new B();
       b.cry();
       b.speak();
    }  
}