Seems to me that Java is also still one of the most supplied tech skills. So this does not necessarily make it a market you want to be in. Good SQL skills don't tend to be that common though, but I think a lot of the demand is more for CRUD-level operations than for complex analytics or performance-sensitive stuff.
What kind of question is this? Expert engineers will be paid for that knowledge in any language. Tons of complex, high performance, and high scale applications are written in Java. Half of FAANG runs on Java. Contrary to what HN thinks the world doesn't only run on python, go, and rust.
