System.exit(0) 和 JFrame.EXIT_ON_CLOSE
问题说明
这两者有什么区别.我正在阅读一篇文章(http://www.javalobby.org/java/forums/t17933 ) 关于您应该始终使用的内容
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，即使对于 Java Swing 应用程序，您也应该添加一个侦听器 WindowAdapter 并在其方法 windowClosing(WindowEvent) 中调用 .System.exit()e)
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).
有什么不同吗?一种方法比另一种更好吗?
Is there any difference? Is one method better then the other?
正确答案
如果你看一下 JFrame 代码，就会发现:
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，这完全一样.如果您希望这样做，我会设置 EXIT_ON_CLOSE.
So, it's exactly the same thing. I would just set EXIT_ON_CLOSE if that's what you want it to do.
这篇好文章是转载于：学新通技术网
