Java itself is worth learning, but one thing to consider as a bonus: if you can learn java and some of the associated tooling, it also gets you access to an onramp for learning scala, clojure, kotlin, other JVM languages.

You might not use the tools immediately but the fact you can debug java stack traces using one of the more "fun" languges certainly doesn't hurt.

Another perspective: if you ever get in to data engineering it's usually a big requirement to know something java related.