Eclipse doesn't highlight references anymore

Question

I have an odd problem. In Eclipse Ganymede, I used to be able to highlight a variable, and it would highlight the use of that variables in that method. However through some

Answer 1

On Mac OS it's opt-cmd-O I pressed that once by mistake, thanks to this question I found my way back

Answer 2

• In Eclipse Kepler,
  You can simply use the "Toggle Mark Occurrences" icon on the tool bar or you can use keyboard short cut alt+shift+O.
  
  

• Window > Preferences > Java > Editor > Mark Occurrences. Enable "Mark occurrences of the selected element in the current file" and click Apply.
  
  

Answer 3

I had a similar problem. I solved it by uninstalling the erlang plugin called "erlide".

Answer 4

There's a little "highlighter" icon on the toolbar - it toggles "Mark Occurrences".

From the preferences window, the feature you mean is configured by navigating to:

Window -> Preferences -> Java -> Editor -> Mark Occurrences

Answer 5

I had the similar problem where the references were not highlighted, on enabling the mark occurrences in windows-prefrences-java-editor I am able to highlight the references