The order of directory entries is undefined on all operating systems
that I'm aware of.  Eclipse alphabetizes them, so you would need to
rename the folders in order to change their order.  Even then, though,
you'd just be changing the apparent order, because there is NO real
order defined for directory entries.  At least not on any system I've
used such as Windows, DOS, anything UNIX-ish, or OpenVMS... and almost
certainly not anywhere worth mentioning.

Perhaps there's a misunderstanding here.  Are you sure you're
interpreting those coding standards correctly?  If so, are you sure you
want to work in an environment that produced them?