如何从超类访问子类变量

Question

我的子类是Player，我需要在我的超类Pistol中使用字段Money和name。我知道如何在子类中使用超类变量，但我必须学会如何做相反的事情？谢谢。

public  class Player extends Pistol {
   int money;
   String name;
   Player borrower;
   Player target;

   int amount;
   boolean terrorist;
   int health;
   //CONSTRUCTOR
   public Player(){}

   public Player(String name,boolean terrorist, int money,int health){
    this.name=name;
    this.terrorist=terrorist;
    this.money=money;
    this.health=health;
   }
}

public class Pistol {
    int bullets = 20 ;

    public Pistol(){
    
    }
    
    //LOAD MAGAZINE METHOD
    public  void getBullet(){
        
        if((20-bullets)*5 <= money && bullets!=20){
            money=money-(20-bullets)*5;
            bullets=20;
            System.out.println("Success! The real war begins now!");
            System.out.println("INFO : "+ name +" has 20 bullets in his/her pistol");
            System.out.println("INFO : "+ name +" has "+ money +"$");
        }
        else{
            System.out.println("Player can not afford it now.");

        }
    }
}

Answer 1

子类扩展了一个超类，因为你告诉子类扩展这个超类，子类知道父类是哪个类。父母对孩子一无所知。