The Kotlin 2.4.0 release is out! Here are the main highlights: For the complete list of changes, refer to What’s new in Kotlin 2.4.0 or the release notes on GitHub. How to install Kotlin 2.4.0 The latest version of Kotlin is included in the latest versions of IntelliJ IDEA and Android Studio. To upd...

Last week at the KotlinConf 2026 keynote (watch the recording here), we announced Koog 1.0. Koog is JetBrains’ open-source framework for building AI agents in Kotlin and Java. It provides the core building blocks for agentic applications: tools, workflows, persistence, memory, observability, and int...

Kotlin turns 15 this year, and it really is everywhere. It powers systems behind everyday moments, such as tapping to pay, buying commuter rail tickets, using in-flight entertainment, and even filing tax returns online. As AI continues to reshape how software gets built, Kotlin’s growing real-world ...

Upgrade rhythms vary significantly among Kotlin’s user base. Some teams update whenever a new release lands without a second thought. On the other hand, a team inside a regulated organization moves on a multi-quarter cycle and treats every dependency as something that has to be reviewed, approved, a...

Today at KotlinConf 2026, we announced the Alpha release of the official Kotlin extension for Visual Studio Code. IntelliJ IDEA and Android Studio remain the most complete environments for Kotlin development. But not every Kotlin developer works there every day. Some prefer VS Code, or already have ...

Years of productivity-focused design are now visible in the data. Pragmatism has been central to Kotlin’s design from day one. The language prioritizes the developer’s convenience and productivity over academic purity or feature ambition. Developers describe working in Kotlin in a fairly consistent ...

We are updating the default project structure for Kotlin Multiplatform projects to give modules clearer responsibilities, better align with conventions used by other build systems and frameworks, and reflect the changes in Android Gradle Plugin 9.0. You’ll see this project structure in newly created...

AI is rapidly changing the way developers write, review, learn, and maintain code. Code completion, AI chat assistants, autonomous coding agents, and other tools are giving rise to new workflows almost every month. But one important question remains: How well do these tools actually work with Kotlin...

A new release of Compose Multiplatform has landed, with improvements to the iOS and web experience and a refreshed approach to UI testing. Read on for the highlights, or for the complete list of changes, check out the What’s New. Get Started with Compose Multiplatform Native text input on iOS If you...

TL;DR New “val inside parentheses” syntax is being introduced to allow for name-based destructuring. Additionally, new syntax with square brackets is being introduced for positional destructuring. Both are currently Experimental (enabled using the -Xname-based-destructuring=only-syntax compiler argu...

JetBrains 与 LinkedIn Learning 合作提供 Kotlin 专业认证。这是一个结构化学习路径，全面覆盖现代软件开发的各个领域 — 从 Kotlin 基础知识，一直到为移动端、桌面端、Web 端和后端环境构建全栈多平台应用程序。 开始学习 适合人群 此认证专为具备基础编程知识，希望学习 Kotlin 并探索多平台开发的开发者设计。无论您拥有 Java、Python、C 还是其他语言背景，此计划都将助您深入了�...

In the Kotlin Ecosystem Mentorship Program pilot, mentors and mentees worked together on real Kotlin open-source projects to make their first meaningful community contribution. Four pairs successfully completed the two-month program, and one eligible pair was randomly selected in the prize drawing t...

JetBrains는 LinkedIn Learning과 협력하여 Kotlin Professional Certificate를 제공합니다. 이 과정은 Kotlin 기초부터 모바일, 데스크톱, 웹, 백엔드 환경을 위한 풀스택 멀티플랫폼 애플리케이션 구축까지 현대 소프트웨어 개발의 전체 범위를 다루는 체계적인 학습 경로입니다. 학습 시작 대상자 이 자격증 프로그램은 기본적인 프로그래밍 지식을 갖추고 Kotlin을 배우고 멀티플랫폼 개발을 탐색...

Hi everyone! April brought exciting community news with the announcement of the Golden Kodee finalists, along with Kotlin and tooling releases, multiplatform progress, and fresh backend resources. I also came across the new Kotlin Professional Certificate on LinkedIn Learning, which is a great way t...

이 글은 Touchlab의 외부 기고자가 작성했습니다. 게시물 원문 Justin Mancinelli Justin Mancinelli는 Touchlab의 클라이언트 서비스 부문 부사장으로, 클라이언트 서비스 전략과 복잡한 기술 제공을 총괄합니다. 또한 모바일 앱, SDK, 개발자 도구, Kotlin Multiplatform, Compose Multiplatform 분야에서 엔지니어링 리더와 협력합니다. 13년 이상의 소프트웨어 비즈니스 지원 경험을 바탕으로, 제품 및 엔지�...

This tutorial was written by an external contributor. As a developer, logging is usually the first technique that you reach for when something goes wrong in your application. You add a few log statements at the start and end of a function and in the exception handlers, and then you get a basic pictu...

这篇博文由我与 Thorben Janssen 共同撰写，Thorben 拥有 20 余年的 JPA 和 Hibernate 经验，并且是“Hibernate Tips: More than 70 Solutions to Common Hibernate Problems”和 JPA 简报的作者。 Kotlin 和 Jakarta Persistence（也称为 JPA）是服务器端开发中备受欢迎的组合。Kotlin 提供了简洁的语法和现代语言功能 ，而 Jakarta Persistence 则为企业应用程序提供了经实践验证的持久性框架。 不过，Jakarta Persistence 最初�...

JetBrains has partnered with LinkedIn Learning to offer the Kotlin Professional Certificate. This is a structured learning path that covers the full scope of modern software development – from Kotlin essentials all the way to building full-stack, multiplatform applications for mobile, desktop, web, ...

This post was written by external contributors from Touchlab. KMP is a strategic platform In the current competitive landscape, the traditional mobile development model characterized by maintaining independent, duplicated codebases for iOS and Android is no longer a sustainable use of capital. This ...

Spring AI is the application-facing integration layer you may already use. Koog is the next layer up when you need agent orchestration. Spring AI already covers the chat model API, chat memory, and vector storage for RAG, and it provides Spring Boot starters with auto-configuration. Koog’s role is n...

“Over the last three to five years, many of the promises that drew people to tech have been called into question.” The tech industry has long promised opportunity, growth, and the chance to build things that reach millions of people. Today, many of those assumptions are being questioned. At KotlinCo...

March was a busy month for Kotlin, with a new language release, fresh tooling, ecosystem updates, and plenty of inspiration ahead of KotlinConf’26. From practical improvements to exciting steps in AI and multiplatform, there’s a lot worth exploring. Here are the stories that stood out to me most. Wh...

All previous posts jb.gg/amper-blog  Amper 0.10.0 is out, and it brings a variety of new features, such as JDK provisioning, custom Kotlin compiler plugins, a Maven-to-Amper converter, and numerous IDE improvements! Read on for all of the details, and see the release notes for the full list of chang...

“There’s never been a better time to be a JVM or Spring developer.” The Spring ecosystem has evolved dramatically over the past decade, from traditional enterprise applications to microservices, distributed systems, and now AI-powered services. Few people have witnessed that evolution as closely as ...

The full KotlinConf’26 schedule is finally live, and it’s packed! With parallel tracks, deep-dive sessions, and back-to-back talks, planning your time can feel overwhelming. When almost every session looks interesting, deciding where to spend your time isn’t easy. To help you navigate it all, the Ko...

The Kotlin Foundation is joining Google Summer of Code (GSoC) 2026! If you are a student or an eligible contributor looking to spend your summer working on a real-world open-source project, this is your chance to make a meaningful impact on the Kotlin ecosystem while also benefiting from the mentors...

The Kotlin 2.3.20 release is out! Here are the main highlights: For the complete list of changes, refer to What’s new in Kotlin 2.3.20 or the release notes on GitHub. How to install Kotlin 2.3.20 The latest version of Kotlin is included in the latest versions of IntelliJ IDEA and Android Studio. To ...

Tracy is an open-source Kotlin library that adds production-grade observability to AI-powered applications in minutes. It helps you debug failures, measure execution time, and track LLM usage across model calls, tool calls, and your own custom application logic. Ultimately, comprehensive observabili...

So, you’re coming to KotlinConf’26? Maybe it’s your first time in Munich, or even your first time at KotlinConf. You have your tickets, you’ve learned the schedule by heart, but it might still feel a little overwhelming. Let me show you how you can have the best possible experience by guiding you th...

At JetBrains, we aim to make Kotlin development as accessible and efficient as possible across the entire ecosystem. While IntelliJ IDEA remains the premier IDE for Kotlin, we recognize that many developers use Visual Studio Code for a variety of tasks and projects. To help streamline the transition...