I've mistakenly overwritten a file I was working on in Eclipse. Now I'm getting a message saying
Resource out of synch with the filesystem
and suggesting I refresh with F5. Can I, instead of refreshing, get that "resource"? It would mean restoring my accidentally-overwritten file...
Right Click on the file and try 'Replace With > Local History'. Eclipse will show you what versions of the file it has in the local history, but local history is only kept for a few days.