You can compile Kotlin to target any of these JVMs, so of course it's relevant. If you're limited to using Java 6 every day, Kotlin is a game changer. If you ca

You can compile Kotlin to target any of these JVMs, so of course it's relevant. If you're limited to using Java 6 every day, Kotlin is a game changer. If you can target Java 13, less so.