public NewJDialog1(Frame parent, boolean modal)    {        super(parent, modal);        initComponents();        //设置文本框为光标焦点        jTextField1.requestFocusInWindow();        //SymListener symListener = new SymListener();        //确定按钮为回车键"ENTER"        ActionListener ok = new ActionListener()        {            @Override            public void actionPerformed(ActionEvent e)            {                btnOkActionPerformed(e);            }        };        btnOk.addActionListener(ok);        btnOk.registerKeyboardAction(ok,                KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0),                JComponent.WHEN_IN_FOCUSED_WINDOW);        //取消按钮为退出键"Escape"        ActionListener cancle = new ActionListener()        {            @Override            public void actionPerformed(ActionEvent e)            {                btnOkActionPerformed(e);            }        };        btnCancle.addActionListener(cancle);        btnCancle.registerKeyboardAction(cancle,                KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE, 0),                JComponent.WHEN_IN_FOCUSED_WINDOW);    }    void btnOkActionPerformed(ActionEvent e)    {        System.out.println("ok");        this.dispose();    }    void btnCancleactionPerformed(ActionEvent e)    {        System.out.println("cancle");        this.dispose();    }