Kotlin

This roundup is packed with big news: Compose Multiplatform for iOS is Stable, server-side updates, Kotlin for web, and smarter Kotlin development with JetBrains AI.

We've been focused on enhancing Kotlin Multiplatform for web, and a lot has been going on behind the scenes. Now, we're ready to share it!

In this guide, we’ll show you how to structure a project using domain-driven design (DDD) concepts, step by step, by building a minimalistic CRM system.

Kotlin Notebook is a new interactive environment for JVM developers. This article will cover the main Notebook features and how you can utilize them to improve your productivity.  How to use Kotlin Notebook Kotlin Notebook is bundled with IntelliJ IDEA starting from the 2025.1 release, an…

JetBrains AI subscription now includes Junie and AI Assistant – two tools that help Kotlin developers write, refactor, and ship code faster right in IntelliJ IDEA.

KotlinConf’25 kicks off soon! From not-to-miss sessions to the legendary party, here’s a quick preview of everything waiting for KotlinConf attendees.

Starting with version 2025.1, Kotlin Notebook will be integrated into IntelliJ IDEA Ultimate out of the box, without the need to install the plugin! Kotlin Notebook is a new interactive environment for JVM developers. The code in the notebooks can even call and use parts of your project codebase, al…

Starting with IntelliJ IDEA 2025.1, K2 mode, a new implementation of Kotlin support, will be enabled by default. This change is an important step in the ongoing effort to improve Kotlin support in the IDE.  While this transition brings many improvements and lays the foundation for a smoother…

I'm Yan Zhulanow, and I lead the Kotlin Analysis API team. Last year, we made a series of announcements about Kotlin K2 mode in IntelliJ IDEA. Now, as K2 mode is about to become the default, I am thrilled to tell you more about everything we had to go through to make this release happen. Even bef…

Context parameters will be replacing context receivers in Kotlin, with version 2.2.0 featuring them as Beta. We are committed to providing an easy migration between both features, including dedicated compiler and IntelliJ IDEA support.

Kotlin Heroes is a fun and challenging contest with problems designed to be interesting for programmers of all levels. Solve algorithmic problems, learn more about Kotlin, and get a chance to win prizes! The main contest will take place on April 7, 2025, but the practice round is already open – s…

Identifying edge cases for testing can be a challenging task, often leaving hidden bugs and vulnerabilities undetected. Fuzz testing (fuzzing) addresses this challenge by automatically generating tests with random or invalid inputs, enabling developers to uncover unexpected exceptions and failure sc…