Kotlin is no-longer new. As of 7 May 2019, Kotlin has been the official “preferred” language for Android development according to Google. It has been available as a built-in feature of Android ...

Kotlin is a super new programming language built by JetBrains, which also coincidentally develops the JetBrains IDE that Android Studio — Google’s official developer tool — is based on.

It's part of Google's effort to shift Android app makers from Oracle-owned Java to Kotlin, the official Android programming language from JetBrains, a Czech-based integrated development ...