Intellisense in IntelliJ no longer working

Question

I\'m currently running IntelliJ IDEA 13.1. While running IntelliJ 13 intellisense/autocomplete stopped working. I tried upgrading and it still doesn\'t work.

I can e

Answer 1

Had the same problem until:

1. Third party JDK installed
2. Configured in module settings: right click on project name, then "Open module settings" -> SDKs -> "+". Pick the jdk root folder and Idea will take care of the rest.
3. Re-indexed a bunch of things. It happens automatically, just be patient