无法在Java中使用HashMap从BuffereImage渲染视频

在我的项目中，我有一个类FramesUtil，它包含一组存储在HashMap中的帧-

    ConcurrentHashMap<Integer, Frame> frameMap

在迭代过程中，JFrame似乎没有在循环中使用新的BuffereImage进行更新

下面是我在Arbiter.java中的playVideo方法-

    public static void playVideo() {
    BufferedImage img;
    JFrame frame = new JFrame();
    GridBagLayout gLayout = new GridBagLayout();
    frame.getContentPane().setLayout(gLayout);
    JLabel lbIm1;
    for(int i=0; (img=FramesUtil.frameMap.get(i).bufferedImage)!=null; i++) {
        lbIm1 = new JLabel(new ImageIcon(img));
        GridBagConstraints c = new GridBagConstraints();
        c.fill = GridBagConstraints.HORIZONTAL;
        c.anchor = GridBagConstraints.CENTER;
        c.fill = GridBagConstraints.HORIZONTAL;
        c.gridx = 0;
        c.gridy = 1;
        System.out.println(lbIm1);
        frame.getContentPane().add(lbIm1, c);
        frame.pack();
        frame.setVisible(true);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }

}

P.P.S.我已经尝试在for循环

中创建新的jFrand和GrdAgBayes实例，请看一看，我也会考虑一个可能通过

    public static void playVideo() {
    BufferedImage img;
    JFrame frame = new JFrame();
    GridBagLayout gLayout = new GridBagLayout();
    frame.getContentPane().setLayout(gLayout);
    JLabel lbIm1;
    for(int i=0; (img=FramesUtil.frameMap.get(i).bufferedImage)!=null; i++) {
        lbIm1 = new JLabel(new ImageIcon(img));
        GridBagConstraints c = new GridBagConstraints();
        c.fill = GridBagConstraints.HORIZONTAL;
        c.anchor = GridBagConstraints.CENTER;
        c.fill = GridBagConstraints.HORIZONTAL;
        c.gridx = 0;
        c.gridy = 1;
        System.out.println(lbIm1);
        frame.getContentPane().add(lbIm1, c);
        frame.pack();
        frame.setVisible(true);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }

}