Koltin has been around for a few years and I am going to take the time to learn more about it to see where it could be a good tool.

Kotlin Programming Language

State of Kotlin 2018

State of Kotlin 2019

From Java to Kotlin and Back

I have started to learn a bit and have done a few lines of code:

Learning Kotlin

I use SDKMan to install and update Kotlin on my macOS.