Why does renaming of files sometimes refactor the classnames and sometimes not?

Question

I found it curious that the file rename sometimes ask to refactor the class inside and (most) sometimes just renames the files.

Answer 1

I think the class name has to match the filename exactly. It may also depend on whether your code compiles at the time, though not sure on that point.

Answer 2

In addition to what AndrewS said, I belive that if you have multiple classes in a single file, it will also not ask to refactor it.