I've found in general the places that use Java don't look for a Java developer. Its like they just assume you can pick it up. You might see things like knowledge of OOP, SQL, etc. on the job listing. For example, lots of large companies like Google, Microsoft, Amazon, Twitter, Netflix, etc. have a ton of Java, but their job descriptions don't really mention it.

On the other hand, if a place needs Typescript, or GO, they'll mention it.