Edit :
My Intellji Code Completion is not working. I read other posts about this (Intellisense in IntelliJ no longer working ; IntelliJ Code Completion not working for new Java classes) but all their ideas did not work. My Power Save mode is turned off and my source root is set.
Back to my problem with an example:
int redValues = 234;
when I type redValue
and I hit control+space
it says no suggestion.
My Code Completion is the defautl config and I have this problem since the last update of Intellji.