How to add Git-Lab on Eclipse?
So that I can just push or fetch from GitLab. I am a newbie in this, please give more explanation.
The easiest way is to usean Eclipse with EGit (http://www.vogella.com/tutorials/EclipseGit/article.html)
See "Compare Eclipse packages" (the standard Eclipse, for instance, has EGit)
This will allow you to add a remote repo url referring to your gitlab repo hosting server.
This isn't specific to gitlab though, and you could add remote repos referring to Github or Bitbucket.
http://wiki.eclipse.org/EGit/User_Guide#Working_with_remote_Repositories