Kotlin Tutorial — Kotlin

Learn Kotlin

Kotlin is a modern, trending programming language.

Kotlin is used to develop Android apps, server side apps, and much more.

an online editor makes it easy to learn Kotlin. You can edit the code and view the result in your browser:

kotlin

fun main() {
  println("Hello World")
}

Run the code to see how it works.

We recommend reading this tutorial, in the sequence listed in the left menu.

Learn by taking a quiz! This quiz will give you a signal of how much you know about Kotlin.

Take the Kotlin Quiz

Learn by examples! This tutorial supplements all explanations with clarifying examples.