This cuts both ways though. Sure, if you learn Java you'll be likely to find employment. If you learn Java and also Scala and Clojure, and some Haskell and R j

This cuts both ways though. Sure, if you learn Java you'll be likely to find employment. If you learn Java and also Scala and Clojure, and some Haskell and R just to round out your experience, then you will find a much higher paying job regardless of what language you end up doing, because you'll not only be better at programming in a "standard" job but you'll become eligible for more niche, higher-paying positions.