[brown9]

Eclipse won't change your file/folder structure (unless you tell it to).

In fact, you can have source code somewhere outside of your "workspace" and just point Eclipse to it, there is no requirement for the code to be inside the "workspace".

[abalashov]

I'm guessing that's done by some method other than the "Import" facility...?

[johngunderman]

Import will just tell Eclipse where the code is located, not actually copy it into the workspace. Import is probably what you want.