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Converting to Kotlin
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Codelab
Learn Kotlin language conventions as you convert Java code to Kotlin
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Add Kotlin to an existing app
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Article
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Add Kotlin files to your existing project and convert Java language code to Kotlin
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Java-friendly Kotlin
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Codelab
Write or adapt your Kotlin code to make it callable from Java code
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Kotlin-Java interop guide
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Article
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A set of rules for authoring public APIs in Java and Kotlin
Kotlin for Java developers Quiz
Take the Kotlin for Java developers quiz to earn a badge.
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