Most of my background is in Python, but I've dabbled in a lot of languages out there from Haskell, lisp, Perl...etc. The point being I don't mind trying new things. I don't know Java and the JVM very well though and a lot of hosted languages like Scala, Clojure, Kotlin...etc seem to assume that you're intimately familiar with it which is a pain. Also, the Scala tooling when I last checked ~2 years ago was complex. I just wanted to write a simple app and started drowning in the complexity of SBT and gave up pretty quick. Your mileage may vary, especially if you're already familiar with the Java ecosystem. I've had more success with F# and OCaml.

Note that I'm not saying Scala is bad, it just wasn't an easy enough transition for me to justify climbing the plateau. Clojure ended up being a similar situation. These languages are also optimized around writing large software projects and that was a hindrance rather than a benefit to someone that does more scripting than anything.