One aspect of a programmer's work that I think can get overlooked is the actual physical workspace where he or she works. Over the years I have invested a lot of time and effort into creating a home office that is ergonomic and promotes a workflow that works for me. By no means am I trying to tell everyone that...
In the world of native Android developing, the developer has the option to write an app in either Java or Kotlin. If you actually clicked on those two links, you might even be able to tell a lot about each language from first glance. Java has been around since 1995 which also seems like the last year the website may have been touched. Kotlin first appeared in 2011 with aspirations to becoming a modern language beloved by many developers and has a website to show for that. Android was born in 2008, so the original way to write Android apps between the two languages was Java. Kotlin did not receive official first class support for Android until Google IO in 2017 and has become a very popular way to build Android apps.
Now when it comes to writing an Android app, I would say it really depends on an individuals background, team size, and teams background to know which language to learn.
