Kotlin Programming - 1.2 (Refe

Statically typed programming language for modern multi-platform applications. 100% interoperable with Java™ and Android™. Kotlin is a great fit for developing Android applications, bringing all of the advantages of a modern language to the Android platform without introducing any new restrictions.

Kotlin has been successfully adopted by major companies for their Android app development like Pinterest, Basecamp, Keepsafe etc.

As of Android Studio 3.0 Kotlin is a fully supported programming language on Android