How to Programmatically Simulate a JFrame's Close Button Action?

Understanding JFrame Window Handling

Q: How to Replicate JFrame X Close Button Behavior Programmatically?

Java's JFrame provides a default close operation option (e.g., EXIT_ON_CLOSE), but sometimes developers may need to programmatically trigger a window close action. The objective is to emulate the behavior of the X close button or Alt F4 (Windows) key combination.

A: Dispatching a Window Closing Event

To achieve the desired outcome, dispatch a window closing event to the JFrame using the以下代码：

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

This action will initiate the same sequence of callbacks (e.g., windowDeactivated(), windowClosing(), and windowClosed()) as would occur when the X close button is clicked. This approach effectively instructs the window to "tear itself down."

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