private void initUI() {
  setTitle("2048");
  setDefaultCloseOperation(3);
  setSize(600, 700);
  setLocationRelativeTo(null);
  this.setLayout(null);
  //添加分数
  jl2 = new JLabel("分数：0");
  jl2.setFont(new Font("黑体", Font.BOLD, 30));
  jl2.setBounds(20, 30, 200, 50);
  this.add(jl2);
  //添加开始按钮
  ImageIcon start=new ImageIcon("res/start.png");//开始游戏图标，随意替换就好
  startJB=new JButton(start);
  startJB.setBounds(280, 40, 120, 30);
  startJB.setFocusable(false);
  startJB.setBorderPainted(false);//设置按钮的边框为空
  startJB.setFocusPainted(false);
  startJB.setContentAreaFilled(false);//设置按钮的边框内填充颜色
  
  //添加退一步按钮
  ImageIcon back=new ImageIcon("res/backicon.png");//游戏结束图标，随意替换就好
  backJB=new JButton(back);
  backJB.setBounds(430, 40, 120, 30);
  backJB.setFocusable(false);
  backJB.setBorderPainted(false);
  backJB.setFocusPainted(false);
  backJB.setContentAreaFilled(false);
  
  this.add(startJB);
  this.add(backJB);
  setVisible(true);
  GameListener gl = new GameListener(this, arry, jl2,startJB,backJB);
  addKeyListener(gl);
  startJB.addActionListener(gl);
  backJB.addActionListener(gl);
 }

public void buffPaint(Graphics g) {
  Image image = createImage(600, 600);
  Graphics g2 = image.getGraphics();
  g2.setColor(Color.LIGHT_GRAY);
  Graphics2D g2d = (Graphics2D) g2;
  g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
    RenderingHints.VALUE_ANTIALIAS_ON);
  g2.fillRoundRect(0, 0, Draw2048.RD, Draw2048.RD, 20, 20);
  g2.setColor(Color.GRAY);
  for (int r = 0; r < arry.length; r++) {
   for (int c = 0; c < arry[r].length; c++) {
    g2.fillRect(20 + c * (Draw2048.D + Draw2048.space), 20 + r
      * (Draw2048.D + Draw2048.space), Draw2048.D, Draw2048.D);
   }
  }
  for (int r = 0; r < arry.length; r++) {
   for (int c = 0; c < arry[r].length; c++) {
    if (arry[r][c] != 0) {
     g2.setColor(255, 250, 240);
     g2.fillRect(20 + c * (Draw2048.D + Draw2048.space), 20 + r
       * (Draw2048.D + Draw2048.space), Draw2048.D,
       Draw2048.D);
     g2.setColor(new Color(0, 191, 255));
     g2.setFont(new Font("楷体", Font.BOLD, Draw2048.FSIZE));
     g2.drawString(arry[r][c] + "", 50 + c
       * (Draw2048.D + Draw2048.space), 90 + r
       * (Draw2048.D + Draw2048.space));
    }
   }
  }
  g.drawImage(image, 50, 150, this);
 }

//向上移动的算法
for (int r = 0; r < arry.length; r++) 
    for (int c = 0; c < arry[r].length; c++) {
     if (arry[r][c] > max)//找出数组最大值，用于判断玩家的方块是否达到2048
      max = arry[r][c];
     if (arry[r][c] == 0) {
      for (int r1 = r + 1; r1 < arry[c].length; r1++) 
       if (arry[r1][c] != 0) {
        arry[r][c] = arry[r1][c];
        arry[r1][c] = 0;
        count++;//判断是否发生移动，并且作为输赢判断的标准之一
        break;
       }
     　　}
    }

//向左的相加算法
for (int r = 0; r < arry.length; r++)
 for (int c = 0; c < arry[r].length; c++)
  if (arry[r][c] != 0)
   for (int c1 = c + 1; c1 < arry[r].length; c1++)
    if (arry[r][c] == arry[r][c1]) {
     arry[r][c] *= 2;
     score += arry[r][c];
     arry[r][c1] = 0;
     count++；//判断是否发生相加，并作为输赢判断条件之一。
     break;
     } else if (arry[r][c1] != 0) {
      break;
     }