Hi Sir,

I have tried to connect ruby and java with the help of jruby. i have implemented ruby file in our project and it's working fine but it has some limitations, i have created two methods in jruby , one method is executing but another method that has ruby gems functionality is not working. and error i am getting (NoMethodError: undefined method `capitalize' for nil:NilClass) i have search about it but no solution
https://github.com/jruby/jruby/wiki/GettingStarted  from url i got -
(Many Gems will work fine in JRuby; however, some Gems build native C libraries as part of their install process. These Gems will not work in JRuby unless the Gem has also provided a Java equivalent to the native library. )
also i search for support online but not available even in official site. 
https://www.jruby .org/chat  you can check.
and we are still waiting for reply from facebook also.