Perhaps you’re trying to use a web framework that is as simple as possible and that doesn’t have you learning many concepts to fully leverage its power. If that’s the case, then you need to meet Javalin, a Java and Kotlin web framework that redefines the meaning of lightweight in a lot of senses.

Javalin - A lightweight Java and Kotlin web framework. Create REST APIs in ... Javalin 1.0 was released in 2017, and has been in steady development since.