我有一个对象播放器的数组列表。当我试图从列表中删除此对象时，控制台中没有任何错误，但该对象没有被删除。这是因为如果我输入system.out.println（arraylist）；在我移除对象之后，它仍然打印出刚刚移除的对象。
我在这里管理并创建arraylist：

public class CreatureManager {

    protected Handler handler;

    private ArrayList<Creature> creatures;
    private final Player player;

    public CreatureManager(Handler handler) {
        this.handler = handler;
        player = new Player(handler, 1280, 720);
        creatures = new ArrayList<>();
    }

    public void addCreature(Creature e) {
        creatures.add(e);
    }

    public void removeCreature(Creature e) {
        creatures.remove(e);
    }

    public void tick() {
        for (Creature e : creatures) {
            e.tick();
        }
    }

    public void render(Graphics g) {
        for (Creature e : creatures) {
            e.render(g);
        }
    }

    public Player getPlayer() {
        return player;
    }

    public ArrayList<Creature> getCreatures() {
        return creatures;
    }

}

arraylist中的泛型“creataure”指的是以下类：

public abstract class Creature {

    protected Handler handler;

    protected int x, y;
    protected int width, height;
    protected Rectangle bounds;

    public Creature(Handler handler, int x, int y, int width, int height) {
        this.handler = handler;
        this.x = x;
        this.y = y;
        this.width = width;
        this.height = height;

        bounds = new Rectangle(0, 0, width, height);
    }

    public abstract void tick();

    public abstract void render(Graphics g);

}

arraylist中的对象（播放器）添加到此处，并在程序首次运行时调用：

public void renderCreatures() {
        handler.getCreatureManager().addCreature(new Player(handler, 1280, 720));
    }

arraylist中的对象（player）将被删除，而arraylist（使用名为getplayer（）的getter调用，getter返回arraylist）将被打印到控制台，如下所示：

handler.getCreatureManager().removeCreature(handler.getCreatureManager().getPlayer());
System.out.println(handler.getCreatureManager().getCreatures());

控制台中的输出（从sysout到arraylist）证明刚刚删除的对象仍然在arraylist中：

[dev.l0raxeo.entities.creatures.Player@3661db4d]