java - 在构造函数中将新对象添加到 ArrayList

Question

我正在尝试将新创建的对象添加到类的构造函数中的 ArrayList。新对象正在 main 方法中的另一个类中创建。

主要方法:

public static void main(String[] args) {
    // TODO code application logic here
    Player p1 = new Player("Peter");
}

我的播放器类:

public class Player {

protected static int age;
protected static String name;
protected static ArrayList players = new ArrayList();

Player(String aName) {
    
    name = aName;
    age = 15;
    players.add(new Player()); // i know this doesn't work but trying along these lines
    
   }
}

Answer 1

你必须编辑行

players.add(new Player());

到

players.add(this);

另外，年龄和名字也没有必要做成静态的

我建议你改用下面的代码

import java.util.ArrayList;

public class Player {

protected int age;    //static is removed
protected String name;  // static is removed
protected static ArrayList<Player> players = new ArrayList<Player>();  //this is not a best practice to have a list of player inside player.

Player(String aName) {

    name = aName;
    age = 15;
    players.add(this); // i know this doesn't work but trying along these lines

   }


public static void main(String[] args) {
    // TODO code application logic here
    Player p1 = new Player("Peter");
}


}