"Today, our Android apps for Facebook ... than writing new code using Kotlin and leaving most of the existing code in Java (the second approach is how the Linux kernel project and the Android ...

Gradle, the build system of choice for Android mobile development, has been upgraded with better support for building Java applications ... for use as a dependency from another project.

Non-game Android apps are normally written in Java, but a group inside Google is experimenting with a whole new way of writing Android apps using Dart, Google's in-house Web development language.