Kotlin

Lesson in the Android Developer Roadmap · Stage 1: Pick a Language

Last updated 14 September 2026

What is Kotlin?

Kotlin is a statically typed programming language developed by JetBrains and officially endorsed by Google for Android development. It runs on the JVM and is fully interoperable with Java. Kotlin features concise syntax, null safety, coroutines for asynchronous programming, and extension functions that reduce boilerplate.

Study this in the interactive course See the whole Android roadmap

Free resources to learn Kotlin

RoadmapVisit the Dedicated Kotlin Roadmap
Official docsKotlin
Official docsKotlin Documentation
VideoLearn Kotlin Programming for Beginners - Free Code Camp

Kotlin: common questions

Can I learn Kotlin in Hindi?

This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain Kotlin in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.

Is this Kotlin tutorial for beginners?

It is lesson 2 of 113 in the free Android roadmap, in stage 1, Pick a Language. If you are new to Android, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.