Create a JavaFX Milestone Inside a Normal Java Application

Question

I have a launcher and a JavaFX class. Launcher creates a class called JavaFXApplication1. JavaFXApplication contains all the JavaFX code (just an example in this case) and should set up a window with one main step.

The launcher has a static main entry point, but I read that JavaFX does not actually use this entry point. This explains my console output (see End of post).

I don't know if this is possible (Launcher creates a JavaFX window - the entry point is not in the presentation class itself). I do not want to use a preloader (I think that preloaders are just for heavy loads during startup) because the launcher is an entire program as a single object (Presentation, business and persistence - 3-layer program). The entry point must be outside the view class (in this example, in the launch class)

The following example works. But for me it looks like a piece of "black magic"

Here is my code

Launcher:

package javafxapplication1; public class Launcher { public static void main(String[] args) { System.out.println("main()"); // Do some stuff and then create the UI class JavaFXApplication1 client = new JavaFXApplication1(); client.caller(args); } } 

JavaFXApplication1:

 package javafxapplication1; import javafx.application.Application; import javafx.stage.Stage; public class JavaFXApplication1 extends Application { @Override public void start(Stage primaryStage) { System.out.println("start()"); primaryStage.setTitle("I am a JavaFX app"); primaryStage.show(); } public void caller(String[] args) { System.out.println("caller()"); launch(args); } /* We call the main function from the client public static void main(String[] args) { launch(args); }*/ } 

And the output for the program:

 start() 

Is there any way to create such an application? thank you

Answer 1

The answer to this problem is to create a Java project, not a JavaFX project. After that, you can add the main JavaFX class and write a method (call launch ()).

Perhaps you need to add the compile-time libraries deploy.jar, javaws.jar, jfxrt.jar and plugin.jar from the / jdk _ * / jre / lib directory

Answer 2

I wrote a message in Running an instance of JavaFX Application in the main class method - MacDevign

Maybe this is what you are looking for?

The code is quite long, so it’s better to refer to the message, however the use is simple. Note that the init and stop method does not use a start thread, so use it with caution.

The goal is to run a javafx dummy application according to your main method of your class for quick testing / experimentation.

To use this, simply add the following to the main method using lambda, or, alternatively, you can use the anonymous style of the inner class.

 // using the start method of Application class Utility.launchApp((app, stage) -> { // javafx code }, arArgs);