son2.java

java可以实现一些小程序的编写

import Pbag.Father;
class Son2 extends Father{
    public static void main(String[] args){
                Father   f=new Father();
	//System.out.println("f.x=  "+f.x);//  ? 
	System.out.println("f.a=  "+f.a);
	//System.out.println("f.z=   "+f.z);//  ? 
	
	Son2 s=new Son2();
	System.out.println("a="+s.a);
	System.out.println("x="+s.x);
	//System.out.println("z"+s.z);没被继承
    }
}