IntelliJ IDEA

You’re invited to IntelliJ IDEA Conf 2026 – a free online conference for developers working across the JVM ecosystem. Join us for two days of in-depth technical talks, practical insights, and conversations with experts who build and shape modern Java and Kotlin development. The conference will ta…

This article outlines a set of best practices to help you avoid problems and build reliable persistence layers with Kotlin and Jakarta Persistence. And to share some good news before diving in, IntelliJ IDEA 2026.1 will automatically detect many of these issues, highlight them with warnings, and provide support through various inspections.

This month’s Java Annotated Monthly comes with a fresh mix of Java, Kotlin, AI, and tech news, plus a look at some great events you won’t want to miss.

With Kotlin 2.2, a new default rule makes annotations land where developers expect them to, reducing boilerplate and aligning better with popular frameworks.

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…

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…

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…

Welcome to the April edition of Java Annotated Monthly! Java 24 has landed, and we’ve got plenty to say about it. From fresh language features to smart tricks and must-try tutorials, there’s something for every curious developer. The cherry on top? Mala Gupta joins us as this month’s featured guest …

Join us online on June 3–4 for a free virtual IntelliJ IDEA Conf 2025.

We are pleased to announce the public Early Access Program (EAP) of the new Bazel plugin for IntelliJ IDEA by JetBrains. It is available on the JetBrains Marketplace for IntelliJ IDEA 2024.3. This initial release supports Bazel projects focusing exclusively on Java and Kotlin.

This series of blog posts covers several ways that code analysis in IntelliJ IDEA can help you find and fix problems in your code. In the previous posts, we first looked at how the IDE can help you prevent problems while working with code in the editor before moving on to how to resolve problems thr…

In IntelliJ IDEA 2024.3, K2 mode is out of Beta and is now Stable and ready for general use.