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我创建了一个播放器：Player player = new Player(hand, 5000, "Player_1");
当打印类时，它打印"null0null"
为什么不保存变量？谢谢!
玩家职业：

public class Player {
    private Hand hand; //hand with 5 cards
    private int chips; //chips left
    private String name; //name of player

    public Player (Hand hand, int chips, String name) {
        hand = this.hand;
        chips = this.chips;
        name = this.name;
    }

    public int getChips() {
        return chips;
    }

    public Hand getHand() {
        return hand;
    }

    public String getName() {
        return name;
    }

    @Override
    public String toString() {
        return name + " " + chips + " " + hand;
    }
}