小编now*_*ere的帖子

如何按下按键并触发JButton？

例如:

我将"A"JButton作为面板上的GUI.我在"aButton"上实现了一个buttonListener,它会将屏幕更改为其他内容.我希望通过鼠标单击和键盘按下来触发此按钮.

如何在实现buttonListener的同时按下键盘上的"a"来触发这个"A"JButton？

我当前的代码无法触发关键事件.

ButtonListener listener;
KeyboardListener keyboardListener;
private JButton aButton;

public MyButtonPanel() {
    listener = new ButtonListener();

    aButton = new JButton ("A");
    aButton.setFont (BUTTON_TEXT);
    aButton.setPreferredSize (new Dimension (60,30));
    aButton.addActionListener (listener);
    aButton.addKeyListener (keyboardListener);

    setLayout (new BorderLayout());
    add (aButton, BorderLayout.CENTER);

}

private class KeyboardListener implements KeyListener
{
    public void keyPressed(KeyEvent arg0) {
        char c = arg0.getKeyChar();
        System.out.println("Pressed " + c);
    }

    public void keyReleased(KeyEvent arg0) {
        char c = arg0.getKeyChar();
        System.out.println("Released " + c);
    }

    public void keyTyped(KeyEvent arg0) { …