Conclusion. In general, because of the May 2019 announcement from Google I would recommend beginners at Android app development start with Kotlin however there are some exceptions where I think Java may be better . There are two scenarios I would recommend learning Java first for Android app development as a beginner.
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For most, Kotlin’s strengths outweigh the language’s setbacks . There are definite limitations within Java that impede Android API design. Kotlin is inherently lightweight, clean and far less verbose, especially in terms of writing callbacks, data classes, and getters/setters.
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Kotlin is the preferred language for Android development in 2021 . Both Java and Kotlin can be used to build performant, useful applications, but Google’s libraries, tooling, documentation, and learning resources continue to embrace a Kotlin-first approach; making it the better language for Android today.26 Nis 2021
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