Dec 17, 2025 · Kotlin is a concise and multiplatform programming language by JetBrains. Enjoy coding and build server-side, mobile, web, and desktop applications efficiently.

Nov 13, 2025 · 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 …

Standard library API reference Living essentials for everyday work with Kotlin: IO, files, threading, collections, and much more

Dec 9, 2025 · Since its creation in 2011, Kotlin has developed continuously, not only as a language but as a whole ecosystem with robust tooling. Now it's seamlessly integrated into …

Apr 28, 2025 · Quickly learn the essentials of the Kotlin programming language through our tours, which will take you from beginner to intermediate level. Each chapter contains: Theory to …

Apr 1, 2025 · In Kotlin, you declare a variable starting with a keyword, val or var, followed by the name of the variable. Use the val keyword to declare variables that are assigned a value only …

Kotlin Multiplatform Simplify the development of cross-platform projects and reduce the time spent writing and maintaining the same code for different platforms.

Dec 19, 2025 · Kotlin has full out-of-the-box support in IntelliJ IDEA and Android Studio with an official Kotlin plugin developed by JetBrains. K2 mode in IntelliJ IDEA and Android Studio uses …

Explore Kotlin and practice your coding skills on the Kotlin Playground! Simply type a snippet of code and click Run to try it on the fly.

Build your server-side applications with a modern JVM language, and use Kotlin Multiplatform to share data models, validation logic, and more. Use a framework like Ktor to get familiar APIs …