[FIXED] While force stop Java FX app, deleteOnExit working or not

Issue

@Override //// When the main runs
    public void start(Stage stage) throws Exception {
        this.primaryStage = stage;
        primaryStage.setTitle("UzPos");

        File f = new File("C:\\Windows\\checkFile");
        if (!f.exists()) {
            f.createNewFile();
        } else {
            new Alert(Alert.AlertType.ERROR, "App Already running", ButtonType.OK).showAndWait();
            return;
        }
        f.deleteOnExit()
}

This code works cool, but here is one problem. When I force stop the app from Intellij IDEA by stop button, I detected that checkfile is not deleted automatically. Is there any way to get that kind of fuction? I want to work only one instance of my app. Thank you in advance.

Solution

I solved single instance applications using sockets instead of files. The code is Open Source. Feel free to have a look at it.

Or consider to use Drombler FX, the modular application framework for JavaFX, which provides this (optional) feature out of the box. There's also a Getting Started tutorial.

Answered By - Puce