关闭框架时如何操作？

Question

当我要终止该计划时，我该如何采取行动。

例如：

当我要终止程序时，我想设置

if( the x button is clicked or something )
deleteRow from database;
else
just end.

应该在ui框架内完成吗？

Answer 1

使用窗口侦听器。 windowClosing方法用于在窗口关闭时执行代码，如果您想在窗口关闭后执行某些操作，可以使用windowClosed方法。

JFrame window=new JFrame("Window");
window.addWindowListener(new WindowAdapter(){
     @Override
     public void windowClosed(WindowEvent evt)
     {
         //Do something after window has closed.
     }
     public void windowClosing(WindowEvent evt)
     {
         //Do something when window is closing.
         //Useful when you have to access data in window(buttons, textfields etc)
     }
});

还有其他窗口事件侦听器。Documentation of WindowListener

Answer 2

  addWindowListener(new WindowAdapter()
        {
            @Override
            public void windowClosing(WindowEvent e)
            {
               .....

            }
        });