Java Annotated Monthly – October 2026

JetBrains announced JetBrains Air, a system of products for agentic software development, and released an Early Access Program build of Air in its IDEs, following the September 2026 release of Java 27, which IntelliJ IDEA supports from day one. The October 2026 Java Annotated Monthly also highlights IntelliJ IDEA's new Logpoints debugging feature and a course on agentic development with IntelliJ IDEA and Spring Boot.

IntelliJ IDEA IntelliJ IDEA – the Leading IDE for Professional Development in Java and Kotlin News https://blog.jetbrains.com/idea/category/news/ Java Annotated Monthly – October 2026 September gave us plenty to talk about, with major releases and thought-provoking reads. Java 27 arrived, and JetBrains opened a new chapter in agentic development with the announcement of JetBrains Air, a system of products for agentic software development, followed by the EAP of JetBrains Air in IDEs. Marit van Dijk https://maritvandijk.com/ kicks off this edition with her favorite news of the month and a closer look at these highlights. Then comes our usual selection of news, tutorials, and community stories. Let’s dive in Featured Content Java 27 https://openjdk.org/projects/jdk/27/ was released last month. Of course, we support it from day 1 in IntelliJ IDEA. You can read all about it in Java 27 in IntelliJ IDEA https://blog.jetbrains.com/idea/2026/09/java-27-in-intellij-idea/ or watch the release stream https://www.youtube.com/watch?v=4V2jooUo8O0 if you missed it. Piotr Przybył https://softwaregarden.dev/en/ and I updated our talk Learning modern Java the playful way https://maritvandijk.com/presentations/modern-java-playful/ and presented https://gotocph.com/2026/sessions/4000/learning-modern-java-the-playful-way it at GOTO Copenhagen https://gotocph.com/2026 last week, where I was also on stage for two other sessions. This week, Piotr and I will be doing a Deep Dive https://m.devoxx.com/events/dvbe26/talks/9752/learning-modern-java-the-playful-way version at Devoxx Belgium https://devoxx.be/ . Later this month you can find us at JDD https://jdd.org.pl/ and Hello Stavanger https://www.hellostavanger.no/ . In other news, JetBrains Air https://www.jetbrains.com/air/ was announced https://blog.jetbrains.com/blog/2026/09/22/introducing-jetbrains-air/ ; one system for building software with agents. Please try out Air in the IDE https://blog.jetbrains.com/ai/2026/10/air-in-ides-eap/ and let us know what you think Igor Kulakov https://www.linkedin.com/in/inspector-patronum/ wrote a Logpoints Walkthrough https://blog.jetbrains.com/idea/2026/09/logpoints-walkthrough/ on how to use Logpoints; a new debugging feature in IntelliJ IDEA. Anton Arhipov https://www.linkedin.com/in/antonarhipov/ shows how to tie that all together https://www.linkedin.com/posts/antonarhipov automated-debugging-by-ai-agents-in-air-with-ugcPost-7511922897389510656-C rl/ . And Siva Prasad Reddy K https://www.linkedin.com/in/ksivaprasadreddy/ announced a course Building with AI Agents From Idea to Production https://www.youtube.com/watch?v=tmMwM1c8PAc where he will teach you about agentic development with IntelliJ IDEA and Spring Boot. Finally, we are starting to release the videos from IntelliJ IDEA Conf 2026 on the IntelliJ IDEA YouTube channel https://www.youtube.com/intellijidea , or catch up on IntelliJ IDEA Tech Talks episodes https://www.youtube.com/watch?v=ILn2GX8s1FM&list=PLBolw4tavnAY . Java News Here’s what’s new in the Java world: Java Tutorials and Tips Give your next coding session a head start with these practical guides: - From Spec-Driven Development to Living Specifications in Java Projects https://foojay.io/today/from-spec-driven-development-to-living-specifications-in-java-projects/ - Principles of Memory Management in Java https://inside.java/2026/09/04/memory-management-principles-java/ Kotlin Corner A little Kotlin inspiration? Right this way: - Kotlin Developer Survey is ongoing https://surveys.jetbrains.com/s3/kotlin-developer-survey-2026 - KotlinConf 2027 is coming to Krakow https://kotlinconf.com/ - The State of Kotlin in 2026 Report https://blog.jetbrains.com/kotlin/2026/09/state-of-kotlin-2026-report/ - Companions to come https://blog.jetbrains.com/kotlin/2026/09/the-companions-to-come/ AI Beyond the AI buzz, there’s plenty to explore: Languages, Frameworks, Libraries, and Technologies Your next useful discovery might be outside your usual stack: Conferences and Events Clear some space on your calendar for these conferences: - Devoxx Belgium https://devoxx.be – Antwerp, Belgium, October 5-9; Come meet JetBrains people and learn the recent news at our booth. - JavaCro https://2026.javacro.hr/eng – Rovinj, Croatia, October 11-14 - Dev2Next https://www.dev2next.com – Lone Tree, USA, October 12-15 - BaselOne https://baselone.org/ – Basel, Switzerland, October 14-15 - {j}DD https://jdd.org.pl – Kraków, Poland, October 20-21; Join the session by Marit van Dijk mailto:marit.van.dijk@jetbrains.com . - JCon USA https://2026.usa.jcon.one – Atlanta, USA, October 26-29 - J On the Beach https://www.jonthebeach.com – Malaga, Spain, October 29-30 Culture and Community Great software starts with people, and people have stories to tell: - Personality Over Skillset: How Adam Wachtel Builds Engineering Teams https://www.infoq.com/podcasts/personality-over-skillset/?utm campaign=infoq content&utm source=infoq&utm medium=feed&utm term=global - You Can’t “Vibe Code” Love https://blog.codinghorror.com/you-cant-vibe-code-love/ - I don’t like LLMs https://martinfowler.com/articles/2026-dont-like-llms.html - Build your Agentic Harness is Out https://ai.baeldung.com/build-your-agentic-ai-harness-course/ And Finally… One last detour before you go: - Project Loom in IntelliJ IDEA: Virtual Threads, Scoped Values, and Structured Concurrency https://blog.jetbrains.com/idea/2026/08/project-loom-in-intellij-idea-virtual-threads-scoped-values-and-structured-concurrency/ - The Grails Plugin Has a New Home: Apache Grails https://blog.jetbrains.com/idea/2026/09/the-grails-plugin-has-a-new-home-apache-grails/ - Debug Past an HTTP 403 Without Breaking Spring Security https://blog.jetbrains.com/idea/2026/09/debug-past-an-http-403-without-breaking-spring-security/ - The Evolution of WSL Support in JetBrains IDEsThe Evolution of WSL Support in JetBrains IDEs https://blog.jetbrains.com/platform/2026/09/the-evolution-of-wsl-support-in-jetbrains-ides/ That’s it for today We’re always collecting ideas for the next Java Annotated Monthly – send us your suggestions via email https://mail.google.com/mail/u/0/?fs=1&tf=cm&source=mailto&to=JAM@jetbrains.com or X https://x.com/intellijidea?ref src=twsrc%5Egoogle%7Ctwcamp%5Eserp%7Ctwgr%5Eauthor by October 20. Don’t forget to check out our archive of past JAM issues https://www.jetbrains.com/lp/jam/ for any articles you might have missed Subscribe to IntelliJ IDEA Blog updates