If you are on OSX and using eclipse it’s good from time to time to clean cached data. You have to start eclipe from the command line to perform the clean. I am forgetting this command all the time, so I thought I’d put it some place where I can easily find it.
Change directory, “cd”, to the directory where eclipse is installed and enter the following line in a terminal window.
./eclipse -clean -vmargs -XstartOnFirstThread
It takes a little longer to start up than usual, but now you have a squeaky clean eclipse.