IntelliJ Idea 12: How do I auto import namespaces?

Question

In Eclipse, I can hit the Ctrl+Shift+O shortcut to auto import namespaces. How do I do it in IntelliJ IDEA Community Edition?

Answer 1

You can type AltEnter to show a dropdown of possible classes to auto-import, it's similar to Eclipse.

I found this in Android Studio on Mac OS X - if I mouse over the class name it can't find, you get a suggestion pop-up that shows this shortcut