GUI Designer Basics
IntelliJ IDEA's GUI Designer enables you to create graphical user interfaces (GUI) for your applications, using Swing library components. The tool helps you speed up the most frequently needed tasks: creating dialogs and groups of controls to be used in a top-level container such as a JFrame. When you design a form with the GUI Designer, you create a pane rather than a frame.
Dialogs and groups of controls created with the GUI Designer, can coexist in the application with the components that you create directly with Java code.
In this part:
Using the GUI Designer is subject to the following limitations:
GUI Designer does not support modeling of non-Swing components.
The GUI Designer does not create a main frame for an application, nor does it create menus.