如何创建一个可以放置4张桌面卡片的类/方法？

import java.util.ArrayList;
import java.util.List;

public class DesktopCardHolder {
    private List<Card> cardList;

    public DesktopCardHolder() {
        cardList = new ArrayList<>();
    }

    public void addCard(Card card) {
        if (cardList.size() < 4) {
            cardList.add(card);
            System.out.println("成功添加卡片：" + card.getName());
        } else {
            System.out.println("桌面卡片容器已满，无法添加更多卡片。");
        }
    }

    public void removeCard(Card card) {
        if (cardList.contains(card)) {
            cardList.remove(card);
            System.out.println("成功移除卡片：" + card.getName());
        } else {
            System.out.println("桌面卡片容器中不存在该卡片。");
        }
    }

    public int getCardCount() {
        return cardList.size();
    }

    public List<Card> getCards() {
        return cardList;
    }

    public void clearAllCards() {
        cardList.clear();
        System.out.println("成功清空桌面卡片容器。");
    }
}

public class Card {
    private String name;

    public Card(String name) {
        this.name = name;
    }

    public String getName() {
        return name;
    }
}