Get started with Kotlin
Kotlin is a modern but already mature programming language designed to make developers happier. It's concise, safe, interoperable with Java and other languages, and provides many ways to reuse code between multiple platforms for productive programming.
To start, why not take our tour of Kotlin? This tour covers the fundamentals of the Kotlin programming language.
Install Kotlin
Kotlin is included in each IntelliJ IDEA and Android Studio release. Download and install one of these IDEs to start using Kotlin.
Create your powerful application with Kotlin
Here is how you can take the first steps in developing Kotlin server-side applications.
Create your first backend application:
To start from scratch, create a basic JVM application with the IntelliJ IDEA project wizard.
If you prefer more robust examples, choose one of the frameworks below and create a project:
Spring
Ktor
A mature family of frameworks with an established ecosystem that is used by millions of developers worldwide.
A lightweight framework for those who value freedom in making architectural decisions.
Use Kotlin and third-party libraries in your application. Learn more about adding library and tool dependencies to your project.
The Kotlin standard library offers a lot of useful things such as collections or coroutines.
Take a look at the following third-party frameworks, libs and tools for Kotlin.
Learn more about Kotlin for server-side:
Join the Kotlin server-side community:
Slack: get an invite and join the #getting-started, #server, #spring, or #ktor channels.
StackOverflow: subscribe to the "kotlin", "spring-kotlin", or "ktor" tags.
Follow Kotlin on
Twitter,
Reddit, and
Youtube, and don't miss any important ecosystem updates.
If you've encountered any difficulties or problems, report an issue to our issue tracker.
Here you'll learn how to develop and improve your cross-platform mobile application using Kotlin Multiplatform.
Set up your environment for cross-platform mobile development.
Create your first application for iOS and Android:
To start from scratch, create a basic cross-platform mobile application with the project wizard.
If you have an existing Android application and want to make it cross-platform, complete the Make your Android application work on iOS tutorial.
If you prefer real-life examples, clone and play with an existing project, for example the networking and data storage project from the Create a multiplatform app using Ktor and SQLdelight tutorial or any sample project.
Use a wide set of multiplatform libraries to implement the required business logic only once in the shared module. Learn more about adding dependencies.
Learn more about Kotlin Multiplatform for mobile:
Learn more about Kotlin Multiplatform.
Look through samples on GitHub.
Learn how Kotlin Multiplatform is used at Netflix, VMware, Yandex, and many other companies.
Join the Kotlin Multiplatform community:
Slack: get an invite and join the #getting-started and #multiplatform channels.
StackOverflow: Subscribe to the "kotlin-multiplatform" tag.
Follow Kotlin on
Twitter,
Reddit, and
Youtube, and don't miss any important ecosystem updates.
If you've encountered any difficulties or problems, report an issue to our issue tracker.
If you want to start using Kotlin for Android development, read Google's recommendation for getting started with Kotlin on Android.
If you're new to Android and want to learn to create applications with Kotlin, check out this Udacity course.
Follow Kotlin on Twitter,
Reddit, and
Youtube, and don't miss any important ecosystem updates.
Support for multiplatform programming is one of Kotlin's key benefits. It reduces time spent writing and maintaining the same code for different platforms while retaining the flexibility and benefits of native programming.
Here you'll learn how to develop and publish a multiplatform library:
Create a multiplatform library:
Complete the Create and publish a multiplatform library tutorial. It shows how to create a multiplatform library for JVM, JS, and Native platforms, test it and publish to a local Maven repository.
Use libraries in your application:
Learn more about Kotlin Multiplatform programming:
Join the Kotlin Multiplatform community:
Slack: get an invite and join the #getting-started and #multiplatform channels.
StackOverflow: Subscribe to the "kotlin-multiplatform" tag.
Follow Kotlin on
Twitter,
Reddit, and
Youtube, and don't miss any important ecosystem updates.
If you've encountered any difficulties or problems, report an issue to our issue tracker.
Is anything missing?
If anything is missing or seems confusing on this page, please share your feedback.