super关键字

super和this类似：

　　this本类对象引用

　　super父类对象引用

 

 

 

 

public class Fu {
    public int age=40;
}

public class Zi extends Fu {
    public int age=20;

    public void show(){
        int age=30;
        System.out.println(age);
        System.out.println(this.age);
        System.out.println(super.age);
    }
}

public class Demo {
    public static void main(String[] args) {
        Zi z = new Zi();
        z.show();
    }
}