Hiho,
I’m using the egit plugin for eclipse.
What does this Symbol “*” mean over the icon of a file?
The file is committed but with “git status” the file is marked with “changes to be commited” but with “git diff” happens nothing:/
Here’s a screenshot:

greetings
it means the file is staged for commit, see the section Icon decorations in the eclipse wiki
that is, files which are already tracked by git and changes to them were staged with
git add (-p) <file>