How do I merge a sub directory in Git?

Question

Is it possible to merge only the changes for a sub-directory from a local Git branch to a remote Git branch or is it "all or nothing"?

For example, I have:<

Answer 1

I got this from a forum thread at Eclipse and it worked like a charm:

git checkout source-branch
git checkout target-branch  
git commit
git checkout target-branch
git merge source-branch