IntelliJ IDE how to add SDK

Question

i downloaded the JavaFX SDK from here but when i try adding it to IntelliJ i get the error "The selected directory is not a valid home for JDK". [Project Structure -> Platform Settings -> SDK's -> add]

But i cant find an JDK from JavaFX, maybe i'am understanding something wrong between JDK's and SDK's. But IntelliJ says "add SDK" but need's JDK, can i switch it anywhere in the setting's or as i said above am i understanding something wrong.

Thanks in advance

Edit: The solution's beneth worked fine, here's what i found in the mean time link

Answer 1

IntelliJ doesn't make it all that easy to use JavaFX. I find the most intuitive way is to do the following:

1. Add global libraries for the JavaFX modules you want to use. The easiest way is to use from Maven and search for org.openjfx then add the modules you want (eg controls and fxml for the basic IntelliJ generated JavaFX project).

2. Create a module-info.java file for your app that looks something like the code below.

 module MyModule { requires javafx.controls; requires javafx.fxml; exports mypackage; }

This creates a dependency on the javafx modules and exports your package so that the javafx reflection code has access to it.

There is an alternative method where the dependencies are added to the command line of the app's runtime but I find the method above more straightforward.

Answer 2

First, make sure that the JavaFX plugin is enabled (bundled and default). Then, in a new project, press Ctrl + Alt + Shift + s => Libraries => + => Java . Here, find the JavaFX folder you downloaded, then locate the lib folder in the JavaFX folder. Click on that, and it shouldn't complain about it not being a valid home. Apply your changes then close the dialog.

Now, in the main menu, hover over Run then click Edit configurations . Under the applications tab, click Main (or whatever your file is called). Then, next to the Build and Run section, hover over Modify options => Add VM options , then, in the text area, write the file path, paste:

--module-path /path/to/javafx/sdk --add-modules javafx.controls,javafx.fxml

Make sure you replace /path/to/javafx/sdk with the path to the lib folder in your JavaFX folder. If a name of a folder contains spaces, surround the entire file path with quotes.. Apply your changes and close the dialog.

Now you're done, Go ahead, code your JavaFX stuff. then hit run. Voila!

Official Documentation: https://www.jetbrains.com/help/idea/javafx.html