Also, funcitonal programming is a style of programming, not a collection of features. Just because you have a map and sort method and a hacked in lambda syntax doesn't make Java anything less than OO. Multi-Paradigm usually means one paradigm with a bunch of extra crap in there to make bike shedding easier.
Go can't even get it's packaging story straight and once again doesn't have generics which makes 'functional' programming a no Go;)
I actually really like Clojure (really I just love Lisp).
Go also has modules now.
Maybe not fully functional programming, but something that's quite pleasant to work with to be sure.
And it requires acres and acres of generated code, a custom runtime dynamic type system, whacky module names for compatibility instead of a reliable build system like maven, to make the thing work at all. Kubernets is a multi-megaSLOC advertisement for the virtues of Java as an ergonomic experience.
If it had remained in Java it could be incrementally ported to Kotlin. God, what I wouldn't give for that.
Even with Rust, Go, and .Net core out there it's really hard to beat Java's battletested libraries/frameworks and excellent tooling. Java is still very relevent today and will probably still be for a very long time.