无法在Java Swing中更新JButton

我试图在Java中构建一个TicTacToe游戏，并使用Swing进行GUI。因为我不太了解Swing，所以我使用JButton来创建平铺。最初，所有的瓷砖都是空白的。 现在，当用户单击一个空磁贴，即一个空按钮时，我想在该按钮上放置一个描绘图像的“X”或“O”。但我不能这么做。感谢您的帮助。我已经试过了，但没用

这是我的密码：

/* Showing only required code */

public void run(){

        /* Creating blank JButtons */
         for (int i = 0; i < 3; i++) {
             for(int j = 0; j<3; j++){
                tile[i][j] = new JButton("");
                tile[i][j].setActionCommand("Tile: (" + String.valueOf(i) + "," +   String.valueOf(i) + ")"); 
                /* tile[i][j] has setActionCommand as "Tile: (i,j)" */

                panel.add(tile[i][j]);
             }
         }
         panel.setBounds(140, 170, 300, 300);
         add(panel);
         setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         setVisible(true);  
 }


 /* HERE LIES THE MAIN PROBLEM AS BUTTONS ARE NOT UPDATED AS EXPECTED*/

 public void actionPerformed(ActionEvent e) {
     // when lefttop corner tile is clicked
     if("Tile: (0,0)".equals(e.getActionCommand())){
         if(tileDone[0][0] == false){ // checking if its still empty
             if(currentPlayer.equals("X")){ // checking if current player is "X"
                tile[0][0] = new JButton(new ImageIcon("/home/kaustubh/Desktop /java/TicTacToe/X.png"));
                 panel.add(tile[0][0]);
                 panel.repaint();
                 this.repaint();
                 System.err.println();
             }
             else{
                tile[0][0] = new JButton(new ImageIcon("/home/kaustubh/Desktop/java/TicTacToe/O.png"));
                panel.add(tile[0][0]);
                panel.repaint();
                this.repaint();
                System.err.println();
            }
            tileDone[0][0] = false;
        }
    }

}

/*仅显示所需代码*/
公开募捐{
/*创建空白jbutton*/
对于（int i=0；i<3；i++）{
对于（int j=0；j不清楚为什么要在
actionPerformed（）
中再次添加按钮。如果计划再次添加按钮，首先需要删除旧按钮。相反，您可能只是想更新图标

 public void actionPerformed(ActionEvent e) {
     // when lefttop corner tile is clicked
     if("Tile: (0,0)".equals(e.getActionCommand())){
         if(tileDone[0][0] == false){ // checking if its still empty
             if(currentPlayer.equals("X")){ // checking if current player is "X"

                // here...
                tile[0][0].setIcon(new ImageIcon("/home/kaustubh/Desktop /java/TicTacToe/X.png"));
                //panel.add(tile[0][0]);  // remove this

                 panel.repaint();
                 this.repaint();
                 System.err.println();
             }