JavaFX Languages and Markup - JavaFX 8: A Definitive Guide to Building Desktop, Mobile, and Embedded Java Clients - page 552

Figure 13-3. IntelliJ New Project Wizard, second dialog box
This is where you can select and enable Groovy support for your project. Find Groovy in the list on the left
and select the check box. You also need to configure a Groovy runtime for it to work with in the right pane. If you
don't already have a current Groovy runtime installation, you can grab the latest from the Groovy site at
http://groovy.codehaus.org/ .
The binary zip release should work fine. Extract this to a folder on your hard drive, and then go back to IntelliJ
and set up the Groovy library by clicking the Create... button and selecting the folder to which you just finished
extracting Groovy. To complete the project creation, click Finish and your new project will be opened in the current
window.
We are almost done with the project setup, but are missing the dependent libraries for JavaFX and GroovyFX.
To add these in, open the Project Structure... dialog box from the File menu, and navigate to the Modules section.
This lets you configure the project settings in more detail than the New Project Wizard allows.
Click the Dependencies tab on the right side and the screen shown in Figure 13-4 appears.