Feb 1, 2020 · Kotlin is a concise and multiplatform programming language by JetBrains. Enjoy coding and build server-side, mobile, web, and desktop applications efficiently. v2.1.20

Learn Kotlin. Kotlin is a modern, trending programming language. Kotlin is easy to learn, especially if you already know Java (it is 100% compatible with Java). Kotlin is used to develop Android apps, server side apps, and much more. Start learning Kotlin now »

Kotlin (/ ˈkɒtlɪn /) [2] is a cross-platform, statically typed, general-purpose high-level programming language with type inference. Kotlin is designed to interoperate fully with Java, and the JVM version of Kotlin's standard library depends on the Java Class Library, but type inference allows its syntax to be more concise.

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.

Mar 3, 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 provides many ways to reuse code between multiple platforms for productive programming.

The best way to learn Kotlin is by practicing examples. The page contains examples on basic concepts of Kotlin. You are advised to take the references from these examples and try them on your own.

Nov 6, 2024 · 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 once. These are immutable, read-only local variables that can’t be reassigned a different value after initialization:

Jan 23, 2025 · In this Kotlin tutorial, you'll learn various important Kotlin topics, including data types, control flow, functions, object-oriented programming, collections, and more. We will also delve into advanced concepts such as Kotlin coroutines, null …

Working code that shows how to use the Kotlin language in your Android apps. Now in Android is a fully functional Android app built with Kotlin and Jetpack Compose. It models Android design and development best practices and was designed to be a useful reference for developers.

Mar 1, 2023 · One of Kotlin’s most important features is its fluid interoperability with Java. Because Kotlin code compiles down to JVM bytecode, your Kotlin code can call directly into Java code and vice-versa. This means that you can leverage existing Java libraries directly from Kotlin.