Kotlin for Java developers

Incorporate and convert Java code into Kotlin using Android Studio


Converting to Kotlin


Learn Kotlin language conventions as you convert Java code to Kotlin

Add Kotlin to an existing app

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Add Kotlin files to your existing project and convert Java language code to Kotlin

Java-friendly Kotlin


Write or adapt your Kotlin code to make it callable from Java code

Kotlin-Java interop guide

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A set of rules for authoring public APIs in Java and Kotlin