Kotlin's primary sponsor is JetBrains, the company behind tools like IntelliJ. It's 100 percent interoperable with Java, which until now was Google's only primary language for writing Android apps.

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.

Kotlin also now offers 64-bit watchOS simulator and Xcode 12.2 SDK support. When it comes to standard library changes, Kotlin 1.43.0 includes an experimental locale-agnostic API for changing the ...

Google offers free lessons to help up-and-coming developers build Android apps using Kotlin. Written by Liam Tung, Contributing Writer. Contributing Writer. Sept. 23, 2019 at 4:17 a.m. PT.