Re: [jruby-user] How to use GEM from Java application

mkdir rubygems
GEM_PATH=rubygems GEM_HOME-rubygems jruby -S gem install mygem
cd rubygems
jar -cf ../gems.jar .
add this gems.jar along the jruby.jar on the same classpath/classloader
then jruby will pick your gems.

see also
https://github.com/jruby/jruby/wiki/Jruby-Scripting-container-using-Gems-with-a-Maven-Project

for running inside OSGi or some j2ee containers there is a little more to
do (the wiki would need some update here).

let me know if I was not clear enough . . . christian