Step 1 in this process is to create your WindowListener. The first way is to add a WindowListener to your JFrame. There are several ways to accomplish this. 1) Handling the window closing event with a WindowListener class There are several ways to do this, and I'll show each of them in this article. In this article we'll demonstrate how to close the frame, and your application, when your application receives a "close window" (close frame) event. Of course what you really want to do is prompt the user with some type of "You're about to quit the application - are you sure?" dialog, or just quit the application if you don't want to be that nice. tOnCloseRequest(new EventHandler() void handle(WindowEvent event) else if ("WINDOW_CLOSE_REQUEST".By default, when you create a JFrame in a Java client-side application, and the user presses the exit button on the JFrame, the JFrame window is closed, but the application continues to run, essentially running in the background, as you typically don't have a way of showing that JFrame again. If you have nothing to save, you can use System.exit(0) on tOnCloseRequest() request. You can have all these information on the javadoc page of Application : set a java application to close when a JavaFX browser window is closed? If you want to stop the application before that, you can call Platform.exit(), for example in your onCloseRequest call. At this moment, the stop() method of your Application class is called, so you don't need an equivalent to setDefaultCloseOperation() The application automatically stops when the last Stage is closed.
How to close a JavaFX application on window close?
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