如何通过单击按钮关闭JFrame? [英] How can I close a JFrame by click on a button?

问题描述

我想在窗口中有一个按钮，以便如果单击它(按钮)，则窗口将关闭.

I would like to have a button in my window such that if I click it (button) the window is closed.

我发现我可以通过以下方式关闭窗口:

I found out that I can close a window in the following way:

referenceToTheFrame.hide(); //hides the frame from view
refToTheFrame.dispose(); //disposes the frame from memory

但是，如果我这样做，编译器会抱怨:

But if I do this way, compiler complains:

Note: myProgram.java uses or overrides a deprecated API
Note: Recompile with -Xlint:deprication for details.

我做不安全的事吗?

推荐答案

推荐的使用方法是:

referenceToTheFrame.setVisible(false)

hide方法已被弃用，不应再使用. (尽管在内部setVisible会调用hide或show)

The hide method is deprecated and should not longer be used. (Although internally setVisible will call hide or show)

此外，如果要放置框架，则必须手动调用dispose. (例如，如果您需要关闭窗口的事件)对setDefaultCloseOperation的调用对您无济于事，因为它只会影响在系统菜单上单击关闭按钮后的行为.

Additionally if you want to dispose the frame, you have to call dispose manually. (In case you need the window-closed event for example) A call to setDefaultCloseOperation doesn't help you here, because it only affects the behavior after a click on the close button from the system menu.

请参阅 Swing文档进一步的信息.

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