System.exit（0）vs JFrame.EXIT_ON_CLOSE [英] System.exit(0) vs JFrame.EXIT_ON_CLOSE

问题描述

两者之间有什么区别吗？我正在阅读一篇文章（ http://www.javalobby.org/java/forums/t17933）关于你应该总是使用

Is there any difference between the two. I was reading an article ( http://www.javalobby.org/java/forums/t17933 ) about that you should always use

System.exit(0);

目前我使用

JFrame.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );

文章说即使是Java Swing应用程序，你也应该添加一个监听器 WindowAdapter 并在其方法 windowClosing（WindowEvent e）中调用 System.exit（） 。

The article says that even for a Java Swing Application you should add a listener WindowAdapter and and call System.exit() inside its method windowClosing(WindowEvent e).

有什么区别吗？一种方法比另一种更好吗？

Is there any difference? Is one method better then the other?

推荐答案

如果查看JFrame代码，它会：

If you look at the JFrame code, it does:

 protected void processWindowEvent(WindowEvent e) {
        super.processWindowEvent(e);

        if (e.getID() == WindowEvent.WINDOW_CLOSING) {
            switch(defaultCloseOperation) {
              ...
          case EXIT_ON_CLOSE:
                  // This needs to match the checkExit call in
                  // setDefaultCloseOperation
        System.exit(0);
        break;
            }
        }
    }

所以，它完全一样事情。我只想设置EXIT_ON_CLOSE，如果这是你想要它做的。

So, it's exactly the same thing. I would just set EXIT_ON_CLOSE if that's what you want it to do.

这篇关于System.exit（0）vs JFrame.EXIT_ON_CLOSE的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！