I'm using this enum for directions
and there is an alert show from greenfoot
"Some messages have been simplified, recompile with -Xdiags:verbose to get full output"
question ??? What is Xdiags:verbose
-Xdiags:verbose is a compiler option. Greenfoot doesn't support setting it, so for now you should just ignore it. I believe you only get this when you also get error messages, so you should concentrate on fixing the errors and then this warning will also go away.