What is the best dynamic language to pair with Java on a large Java project?
We are considering using a dynamic language for tests, controllers, services. Some options are Groovy, JRuby or Jython. What are the pros and cons of each for this? Ideally we'd be able to call Java from the dynamic language as well as call the dynamic language from Java.
EDIT: If it helps, we're using Hibernate with PicoContainer and Webwork.
Thanks, Alex