How to show all parents and subclasses of a class in IntelliJ IDEA?

Question

When I\'m editing a Java class in Eclipse, when my cursor is over a class variable, I can do Ctrl+T to have a popup that shows all its parents and subc

Answer 1

For Mac users who come here, this is the shortcut for IntelliJ 14.1.4:

⌃+H by default.