在GridLayout JPanel中访问本地定义的JButton

Question

假设您在NxN网格中有一个JButtons的GridLayout,代码如下:

JPanel bPanel = new JPanel();
bPanel.setLayout(new GridLayout(N, N, 10, 10));
    for (int row = 0; row < N; row++)
    {
        for (int col = 0; col < N; col++)
        {
            JButton b = new JButton("(" + row + ", " + col + ")");
            b.addActionListener(new ActionListener()
            {
                public void actionPerformed(ActionEvent e)
                {

                }
            });
            bPanel.add(b);
        }
    }

如何在网格中单独访问每个按钮以通过setText()更改按钮的名称？这需要在实际按下相关按钮之外完成.

因为每个按钮在本地实例化为"b",所以当前不可能为每个按钮提供全局可访问的名称.如何独立访问每个按钮？像JButton [] []这样的数组是否可以保存对所有按钮的引用？如何在上面的代码中设置？

任何输入都表示赞赏.

谢谢.

Answer 1

您可以,

1) putClientProperty

buttons[i][j].putClientProperty("column", i);
buttons[i][j].putClientProperty("row", j);
buttons[i][j].addActionListener(new MyActionListener());

和

public class MyActionListener implements ActionListener {

    @Override
    public void actionPerformed(ActionEvent e) {
        JButton btn = (JButton) e.getSource();
        System.out.println("clicked column " + btn.getClientProperty("column")
                + ", row " + btn.getClientProperty("row"));
}

2)ActionCommand