JOptionPane灰色输出一键式

如果使用JButton，这很容易：

    public class Test{    public static void main(String[] args)    {        final JButton option1 = new JButton("option1");        final JButton option2 = new JButton("option2");        option1.setEnabled(false);        // option2.setEnabled(false);        option1.addActionListener(new ActionListener()        { @Override public void actionPerformed(ActionEvent arg0) {     // pre here }        });        option2.addActionListener(new ActionListener()        { @Override public void actionPerformed(ActionEvent e) {     // pre here }        });        JOptionPane.showOptionDialog(null, "hello", "The Title", JOptionPane.NO_OPTION, JOptionPane.PLAIN_MESSAGE, null, new JButton[]        { option1, option2 }, option1);    }}