Question

What’s the programmatic equivalent of clicking the close (x) button in the upper right corner of a JFrame?

There’s the dispose() method but that’s not the same thing, since a JFrame can be set to do several different things upon closing (not to mention if there’s a WindowListener involved)

Answer 1

You tell the component to dispatch an event. In this case, you want it do dispatch a Window Closing event.

private void exit() {
    this.dispatchEvent(new WindowEvent(this, WindowEvent.WINDOW_CLOSING));
}