java - 聆听退出键

Question

我想在按下转义键时清除文本字段。

我将 KeyListener 添加到 JTextField

bondIDTextField.addKeyListener(new KeyListener() {

            @Override
            public void keyTyped(KeyEvent e) {

                if( e.getKeyCode() ==   KeyEvent.VK_ESCAPE)
                    ((JTextField)e.getSource()).setText("");

            }

            @Override
            public void keyReleased(KeyEvent arg0) {
                // TODO Auto-generated method stub

            }

            @Override
            public void keyPressed(KeyEvent arg0) {
                // TODO Auto-generated method stub

            }
        });

Answer 1

试试这个代码，它可以工作

    bondIDTextField.addKeyListener(new KeyAdapter() {
    @Override
    public void keyPressed(KeyEvent e) {
        if (e.getKeyChar() == KeyEvent.VK_ESCAPE) {
            ((JTextField)e.getSource()).setText("");
        }
    }
}
);