Java is just a painful language. At that level of abstraction you would expect to work purely on business logic, yet Java makes you just focus on the boilerplate and lacks completely basic features such as tuples, real generics, async/await, anonymous types and more. Spring is another huge pain point, it's slow and verbose in comparison to Go or even .NET. Java is not even close to Kotlin, that's why it was invented in the first place, to not make you want to shoot yourself in the head. Needless to say, I don't see any real use of Java in 2022 and beyond.