This is a Kotlin tutorial for Android: a fun and simple quiz that will serve as the perfect introduction to Kotlin programming.

Google offers free lessons to help up-and-coming developers build Android apps using Kotlin.

It’s no surprise that Google’s hope is that over time, all Android developers will switch over to Kotlin. “There is still quite a bit of Java still happening on Android,” Ward said.

Here's what Meta's developers have learned from moving their code base from the Java programming language over to Kotlin.