java - 我如何正确实例化一个可以同时容纳玩家和发牌人的数组列表？

我正在为APCS类制作Java多人二十一点游戏。我需要能够将玩家和发牌者都存储在arraylist中。实例化arraylist的正确方法是什么？这是问题所在的类。

package BlackJack;

import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.event.KeyListener;
import java.awt.event.KeyEvent;
import static java.lang.Character.*;
import static java.lang.System.*;
import javax.swing.JPanel;
import java.util.ArrayList;

import BlackJack.Card;
import BlackJack.BlackJackCard;
import BlackJack.Deck;
import BlackJack.AbstractPlayer;
import BlackJack.Player;
import BlackJack.Dealer;

public class TheMultiPlayerGame extends JPanel implements KeyListener {
    ArrayList<Object> Ai = new ArrayList<Object>(4);
    private Dealer dealer = new Dealer();
    private Player[] playa = new Player[3];

    private Player player;
    private boolean start;
    private boolean hit;
    private boolean finish;
    private boolean show;
    private Font font;
    int playerTotal = 0;
    int dealerTotal = 0;
    int playerWinTotal = 0;
    int dealerWinTotal = 0;
    String j = "";
    String p = "";

    public TheMultiPlayerGame() {
        setBackground(Color.WHITE);
        font = new Font("TAHOMA", Font.BOLD, 12);
        this.addKeyListener(this);
        dealer = new Dealer();
        Ai.set(1, playa[0]);
        Ai.set(2, playa[1]);
        Ai.set(3, playa[2]);
        Ai.set(0, dealer);
    }

    public void paintComponent(Graphics window) {
        super.paintComponent(window);

        window.setColor(Color.blue);
        window.setFont(font);
        window.drawString("BlackJack GUI", 25, 50);
        window.drawString("PRESS B to start/restart the game.", 25, 100);
        window.drawString("PRESS H to hit - PLAYER", 325, 100);
        window.drawString("PRESS F to finish(DEALER hits).", 25, 130);
        window.drawString("PRESS X to see the results.", 325, 130);
        window.drawString(j, 10, 530);
        window.drawString(p, 10, 90);
        window.drawString("Player WinCount = " + playerWinTotal, 600, 100);
        window.drawString("Dealer WinCount = " + dealerWinTotal, 600, 130);
        window.drawString("Dealer Score = " + dealerTotal, 600, 200);
        window.drawString("Player Score = " + playerTotal, 600, 250);
        Ai.set(1, playa[0]);
        Ai.set(2, playa[1]);
        Ai.set(3, playa[2]);
        Ai.set(0, dealer);

        if (start == true) {
            //reset the dealer and player hands
            dealer = new Dealer();
            player = new Player();
            dealer.shuffle();
            Ai.set(0, dealer);
            System.out.println(Ai.get(0).numCardsLeftInDeck());

            //add two cards to dealer and player
            for (int x = 1; x < Ai.size(); x++) {
                Ai.get(x).addCardToHand(Ai.get(0).deal());

                Ai.get(x).addCardToHand(Ai.get(0).deal());
            }
            playerTotal = player.getHandValue();
            dealerTotal = dealer.getHandValue();
            repaint();
            start = false;
        }
        else if (hit == true) {
            if (playerTotal < 21) {
                player.addCardToHand(dealer.deal());
                playerTotal = player.getHandValue();
                repaint();
            }
            hit = false;
        }
        else if (finish == true) {
            dealer.addCardToHand(dealer.deal());
            dealerTotal = dealer.getHandValue();
            finish = false;
            show = true;
        }

        if (show == true) {
            //determine who won the game
            dealerTotal = dealer.getHandValue();
            playerTotal = player.getHandValue();
            if (playerTotal > 21 && dealerTotal <= 21) {
                j = "\nDealer wins - Player busted! " + playerTotal + " : " + dealerTotal;
                dealerWinTotal++;
            }
            else if (playerTotal <= 21 && dealerTotal > 21) {
                j = "\nPlayer wins - Dealer busted! " + playerTotal + " : " + dealerTotal;
                playerWinTotal++;
            }
            else if (playerTotal > 21 && dealerTotal > 21) {
                j = "Both players bust!";
            }
            else if (playerTotal < dealerTotal) {
                j = "\nDealer has bigger hand value! " + playerTotal + " : " + dealerTotal;
                dealerWinTotal++;
            }
            else {
                j = "\nPlayer has bigger hand value! " + playerTotal + " : " + dealerTotal;
                playerWinTotal++;
            }
            repaint();
            show = false;
        }

        window.drawString("DEALER ", 50, 190);
        dealer.drawHand(window, 0, 190);

        window.drawString("PLAYER ", 50, 365);
        player.drawHand(window, 0, 365);
    }

    public void keyTyped(KeyEvent e) {
        if (e.getKeyChar() == 'b' || e.getKeyChar() == 'B') {
            start = true;
            repaint();
        }
        else if (e.getKeyChar() == 'h' || e.getKeyChar() == 'H') {
            hit = true;
            repaint();
        }
        else if (e.getKeyChar() == 'f' || e.getKeyChar() == 'F') {
            finish = true;
            repaint();
        }
        else if (e.getKeyChar() == 'x' || e.getKeyChar() == 'X') {
            show = true;
            repaint();
        }
    }

    public void keyReleased(KeyEvent e) {
    }

    public void keyPressed(KeyEvent e) {
    }
}

最佳答案

您当前的初始化无效。

您可以将其更改为：

 Ai.add(dealer);
 Ai.add(playa[0]);
 Ai.add(playa[1]);
 Ai.add(playa[2]);

但是，如果发牌者和玩家没有实现公共接口或共享公共超类（对象除外），那么将它们放入该ArrayList并不重要。