should i learn kotlin or java
Both Java and Kotlin are awesome, and it is totally a choice of yours.
Keep in mind that you should use programming language as a tool.
So, learn both
but explicitly
Kotlin also typically has fewer codes, whereas Java adheres more to a
traditional approach to making everything verbose. One advantage of
Kotlin over Java is Kotlin's flexibility – it can choose to do everything
in the traditional OOP approach, or it can go a different way.