Kotlin Tutorial

Examples in Each Chapter

Our "Try it Yourself" editor makes it easy to learn Kotlin. You can edit the code and view the result in your browser:

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

Click on the "Try it Yourself" button to see how it works.

Kotlin Exercises

 () {
  println("Hello World")
}

Kotlin Quiz

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

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

See All Kotlin Examples

Download Kotlin

Download Kotlin from github: https://github.com/JetBrains/kotlin