[wlpu]

I am about to do so. Truth be told I am angling for Kotlin over Java, but I wouldn't be unhappy if it went that way.

Java has come a long way, 17 has a lot of nice language features and Amber, Panama, Loom, Valhalla are all doing great things for the JVM.

There's also the excellent ecosystem, and some of the Kotlin libraries have quite nice APIs.

I think tooling is a plus too, Gradle is a flexible and extensible build tool. I've also been experimenting with Graal, I'm not committing to using it, but it does look very promising (and has an easy to use plugin for Gradle). We could use it to build some very slim Container images, if it works out.