Java BlackJack 游戏上未显示的卡片图片

问：

我无法显示卡片的图片。只有图像没有显示。其他一切都是正确的。 以下是所有相关文件。 抽象播放器

public abstract class AbstractPlayer implements Playerable {

private ArrayList<Card> hand;
private int winCount;


    public AbstractPlayer()
    {
        hand = new ArrayList<Card>();
        winCount = 0;
    }

    public AbstractPlayer(int score) 
    {
        winCount = score;
    }

    public void addCardToHand(Card temp)
    {
       hand.add(temp);
    }

    public void resetHand() {
        hand.clear();
    }

    public void setWinCount(int numwins)
    {
        winCount = numwins;
    }

    public int getWinCount()
    {
        return winCount;
    }

    public int getHandSize() 
    {
        return hand.size();
    }

    public ArrayList<Card> getHand()
    {
        return hand;
    }

    public int getHandValue() 
    {
        int sum = 0;
        for(Card c: hand)
            sum = sum + c.getValue();
        return sum;
    }

    public String toString() 
    {
        return "hand = " + hand.toString() + " \n-  # wins " + winCount;
    }

    public void drawHand(Graphics window, int x, int y)
    {
       window.create(x, y, 90, 120);
    }
   }

选手 公共类 Player 扩展 AbstractPlayer { 构造 函数 公共播放器（） { 超（）; }

    public Player(int score)
    {
        super(score);
    }

    public boolean hit() 
    {
        //no code needed with GUI version
        return false;
    }
    }

玩家测试二

    public class PlayerTestTwo extends JPanel implements KeyListener {

    private Deck deck;
    private Player player;
    private Font font;
    private boolean start;
    private boolean hit;
    private boolean finish;
    private boolean show;

    public PlayerTestTwo() {
        setBackground(new Color(34, 139, 34));

        deck = new Deck();
        player = new Player();

        font = new Font("TAHOMA", Font.BOLD, 12);

        this.addKeyListener(this);    //starts the key thread running
    }

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

        window.setColor(Color.black);
        window.setFont(font);
        window.drawString("BlackJack Player Test", 25, 50);
        window.drawString("PRESS B to add cards to your hand.", 25, 100);

        if (start == true) {
            deck.shuffle();
            player.addCardToHand(deck.nextCard());
            player.addCardToHand(deck.nextCard());
            start = false;
            show = false;
        }

        window.drawString("PLAYER ", 50, 165);
        player.drawHand(window, 10, 185);
    }

    public void keyTyped(KeyEvent e) {
        if (e.getKeyChar() == 'b' || e.getKeyChar() == 'B') {
            start = true;
            repaint();
        }
        if (Character.toLowerCase(e.getKeyChar()) == 'r'
                || Character.toLowerCase(e.getKeyChar()) == 'q') {
            deck = new Deck();
            player = new Player();
            repaint();

        }
    }

    public void keyPressed(KeyEvent e) {
    }

    public void keyReleased(KeyEvent e) {
    }
}


Test File
     import javax.swing.JFrame;
     import java.awt.Component;
     public class CardDeckPlayerGraphicsRunner extends JFrame {

    private static final int WIDTH = 800;
    private static final int HEIGHT = 600;

    public CardDeckPlayerGraphicsRunner() {
        super("BLACKJACK CardDeckPlayerRunner");
        setSize(WIDTH, HEIGHT);

        //test the Card class
        CardTestTwo cardTest = new CardTestTwo();
        getContentPane().add(cardTest);

        //test the Deck class
       DeckTestTwo deckTest = new DeckTestTwo();
      ((Component)deckTest).setFocusable(true);

       getContentPane().add(deckTest);
        //test the Player class
        PlayerTestTwo playerTest = new PlayerTestTwo();
       ((Component)playerTest).setFocusable(true);
        getContentPane().add(playerTest);
       setVisible(true);

        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }

    public static void main(String args[]) {
        CardDeckPlayerGraphicsRunner run = new CardDeckPlayerGraphicsRunner();
    }
}