super与this关键字

public class Fu {
    int num=10;
    public void method(){
        System.out.println("父类方法");
    }
}
------------------------------

public class Zi extends Fu {
    int num=20;
    @Override
    public void method(){
        super.method();//调用了父类方法
        System.out.println("子类方法");
    }

    public void show(){
        int num=30;
        System.out.println(num);//30
        System.out.println(this.num);//20
        System.out.println(super.num);//10
    }
}
-----------------------------------------

public class Demo {
    public static void main(String[] args) {
        Zi zi=new Zi();
        zi.show();
        zi.method();
    }
}
//结果：
//30
//20
//10
//父类方法
//子类方法