Yes, there are RPMs of these items - the one for Ant on the FC2 discs are not
what you think they should be - they're optimized and recompiled under GCJ to "native" code, so may not work.
I always recommend getting the .bin files for the SDK straight from Sun. As for Ant, it can be had from the Apache
site, along with the source for it. Getting the source for the SDK takes quite a bit more doing and I do not
Don't know about the sources for openXchange, though - I'd think they'd be available from the site....