should java or kotlin for beginner mobile programming

Answer 1

There is still a lack of Kotlin examples so you need to be able to convert Java. But, Kotlin is in my opinion the better language so my choice.

Answer 2

If you have the time it wouldn't hurt to learn Java first, but if android development is all you're interested in then you should be fine going straight for Kotlin 👍

Google Announces Free Android/Kotlin Developer Courses
https://codelabs.developers.google.com/kotlin-bootcamp/

Kotlin site has great tutorial and playground
https://play.kotlinlang.org/koans/overview

Answer 3

React native and flutter are also mobile programming platforms..