I've been thinking about learning Ruby/Rails to build RESTful APIs and was wondering what route I should go down in learning Ruby/Rails.
I am most versed and comfortable with Java, so I was wondering if I should learn the Ruby language completely or if I can get away with just using JRuby in Java? Would I still need to learn a significant amount of Ruby for using JRuby on Rails? (At which point I might as well just learn Ruby completely?)
JRuby is just a Ruby interpreter that happens to be built on top of the JVM. You'd still be learning similar amounts of Ruby either way. JRuby, because it runs on the JVM, is able to do interop with other JVM languages. So as a Java developer, you may find that somewhat useful.