Web Reference: Best way to close a Swing frame programmatically is to make it behave like it would when the "X" button is pressed. To do that you will need to implement WindowAdapter that suits your needs and set frame's default close operation to do nothing (DO_NOTHING_ON_CLOSE). Jan 16, 2026 · While users typically close a JFrame by clicking the "X" button (or using Alt+F4 on Windows/Linux), there are scenarios where you may need to close a JFrame programmatically—for example, after a timer expires, in response to a button click, or when an application task completes. To programmatically close a JFrame in Java, you can use the dispose method. This will close the frame and release any resources used by the frame. Here's an example of how to use the dispose method to close a JFrame: // ... You can also use the setVisible method to hide the frame without closing it.
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