java，声明在应用程序关闭之前运行的方法

Question

I want to make some actions just before my application close. 我想在我的应用程序关闭之前进行一些操作。

I see there are action listeners but i have no frame or similar thing. 我看到有动作侦听器，但是我没有框架或类似的东西。 Just an only java file. 只是一个唯一的Java文件。

How can I able to set some kind of control? 如何设置某种控件？

Answer 1

I want to make some actions just before my application close.

You're probably looking for a shutdown hook: 您可能正在寻找关机钩子：

Runtime.getRuntime().addShutdownHook(...)

Here's a SO question (and great answers) asking for practical uses of shutdown hooks: 这是一个SO问题（以及很好的答案），要求关闭钩子的实际使用：