java——继承下的super

package Project1;

import java.util.*;

class father{
    private int num=0;
    public void setNun(int num) {
        this.num = num;
    }
    public int getNum(){
        return num;
    }
}
class son extends father{
    public int getNum(){
        return super.getNum();//此处必须加super，因为father的num是private的要访问只能用方法
        //而此处的方法也是getNum优先调用的是子类重载的方法不用super是用的father的
        //不然就是无限循环
    }
}
public class Main{
    public static void main(String[] args){
    var a=new son();
        System.out.println(a.getNum());
    }
}

标签：java,继承,father,int,getNum,num,super,public
来源： https://www.cnblogs.com/shuangquantang/p/15762033.html