title: Why would I like to execute scripting language in JVM
body: <p>I am not able to understand why and in what kind of scenario I would like to run scripting language inside JVM at server side. I mean we already have great libraries available in JAVA... why wouldn't I use use them to do stuff instead of running scripts in JVM?
  Please help me understand this concept, Can someone please tell me one or two use cases where running scripting in JVM at server side will have advantages over using JAVA libraries. </p>