inheritance.java

来自「用java编写的一些初级代码」· Java 代码 · 共 31 行

class SuperClass
{
    int x;
    SuperClass(){
	x=3;
	System.out.println("in Super : x=" +x);
    }
    void fun(){
	System.out.println("in Super.fun()");
    }
}
class SubClass extends SuperClass{
    int x;
    SubClass() {
	super();    
	x=5;      
	System.out.println("in Sub :x="+x);
    }
    void fun() {
	super.fun(); //调用父类的方法
	System.out.println("in Sub.fun()");
	System.out.println("super.x="+super.x+" sub.x="+x);
    }
}
public class Inheritance {
    public static void main(String args[]) {
	SubClass subC=new SubClass();
	subC.fun();
    }
}