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Get Started with Kotlin on Android | Android Developers

Kotlin is fully supported in Android Studio 3.0 ( get the canary version here ), so it's easy to create new projects with Kotlin files, add Kotlin files to your existing project, and convert Java language code to Kotlin. You can then use of all Android Studio's existing tools with your Kotlin code, such as autocomplete, lint checker, refactoring, debugging, and more.