Can RoR call java or C code

Hi
I posted this a while back but it has not yet showed up. I dont know
what happened last time.. so posting again

1. Can RoR call C or java third party code?
2. Does it support File I/O ?

thanks
Rupak

This might help:
http://www.rubyinside.com/writing-your-own-ruby-extension-with-c-366.html

1. Can RoR call C or java third party code?

Yes. Both. Those aren't really features of RoR but of Ruby. There
is a whole chapter in the Pickaxe book about extending Ruby with C.
As for Java, try RJB the Ruby Java Bridge. In fact I just wrote a RoR
project that uses itext, a java library, via RJB. It worked very
well.

2. Does it support File I/O ?

Of course.

Actually JRuby does run RoR right now, but with caveats (known issues)
and it's better at 1.1.6. However we've been demoing basic Rails 1.2.1
apps running under JRuby almost weekly, and we're making a major push
over the next month to cleanup all the remaining failures.

- Charlie