Strange indenting for Java Eclipse project on Github

Answer #1:

If those indentation issues are reflected back in your code after a git push to GitHub, you either have:

Those are the two automatic mechanisms that could explain a change during the git commit.

But if your code looks fine locally after the git push, but looks not fine on GitHub, then you must have a combination of space and tabs correctly rendered locally, and rendered differently on GitHub.

As mentioned in “Indentation issue using sublime text 2“:

The problem is not hard tabs, the problem is mixing spaces and tabs for indentation.