How Can I Programmatically Simulate a JFrame's Close Button Click?

How to Programmatically Trigger JFrame's Close Button Behavior

In contrast to the default close operation set by setDefaultCloseOperation, you seek to replicate the behavior triggered by clicking the X close button or pressing Alt F4 (on Windows).

Dispatching a Window Closing Event

To emulate the X close button's action, the solution lies in dispatching a window closing event to the JFrame. The ExitAction from the Closing An Application class offers a convenient way to achieve this.

Usage

To invoke the desired behavior, utilize the following code snippet:

frame.dispatchEvent(new WindowEvent(frame, WindowEvent.WINDOW_CLOSING));

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