IntelliJ Idea builds groovy environment Hello World

Open File->new->project ... Wizard, select Groovy in the left pane.
In the right pane, specify the following settings:
Project SDK: Specifies the JDK used by the project.
Groovy Library: Specify your Groovy SDK or click Create to select one from the list to open it.
Click Next, specify the information for the project, and then click Finish. in the Project Tools window, right-click the project directory and select Add frame support from the drop-down list.

In the Add Frame Support dialog box, click Select Frame and OK.
You can now type the code.