- Open file with the desired class in the editor, and place the caret anywhere inside the class, or on the class name.
- On the main menu, choose or press Ctrl+HCtrl+H.
The class hierarchy appears in the Hierarchy tool window.

You can explore the hierarchy of parent and children classes of a selected class in the Hierarchy tool window.
Note that the Hierarchy tool window only becomes available, when you build the class hierarchy, as described below.
The class hierarchy appears in the Hierarchy tool window.
