I recently took the plunge and upgraded my Eclipse intallation from Helos to Juno in order to work with the latest software and start on Java 7 Training with Lynda.com… it turns out they’re made some pretty cool changes to the language to make it easier to to work with.
To scare the hell out of me I googled up “upgrading eclipse” was was greeted by several posts in StackOverflow and some other good code based forums that warned me to be-careful and I should re-consider upgrading my IDE if I have everything working correctly. After all, there’s the Java Library, the Android SDK with the Emulator Developer Tool running on my machine…. a lot is going on and I didn’t want to have any problems with any projects.
I did run into a lot of problems by the way and one by one… I knocked them out. So they are right to say be-careful.. .but if you’re determined and you’ve gotten through everything and now code completion isn’t working here is something that might help you out.