# Java Annotated Monthly - September 2026

DevFeed: [Java Annotated Monthly - September 2026](<https://devfeed.tech/articles/java-annotated-monthly-september-2026-8803.md>)

Original publisher: [Read original article](<https://blog.jetbrains.com/idea/2026/09/java-annotated-monthly-september-2026/>)

Author: Irina Mariasova

Published: 2026-09-07T11:27:14Z

Content type: article

Language: en

Sources: [The JetBrains Blog](<https://devfeed.tech/sources/the-jetbrains-blog.md>)

Topics: [Programming](<https://devfeed.tech/topics/programming.md>), [AI-assisted coding](<https://devfeed.tech/topics/ai-assisted-coding.md>), [kotlinllm](<https://devfeed.tech/topics/kotlinllm.md>), [migration](<https://devfeed.tech/topics/migration.md>)

Tags: [ai](<https://devfeed.tech/tags/ai.md>), [ai-coding](<https://devfeed.tech/tags/ai-coding.md>), [articles](<https://devfeed.tech/tags/articles.md>), [coding](<https://devfeed.tech/tags/coding.md>), [java](<https://devfeed.tech/tags/java.md>), [kotlin](<https://devfeed.tech/tags/kotlin.md>), [migration](<https://devfeed.tech/tags/migration.md>), [post-quantum](<https://devfeed.tech/tags/post-quantum.md>), [september-2026](<https://devfeed.tech/tags/september-2026.md>), [tls](<https://devfeed.tech/tags/tls.md>)

## AI overview

The September 2026 Java Annotated Monthly surveys Java news, JDK 27 and its performance and security changes, Java tutorials, Kotlin updates, AI-focused development, and developments across languages, frameworks, libraries, and technologies. It highlights compact object headers, G1 as the default garbage collector, protection for sensitive JFR data, post-quantum key exchange in TLS 1.3, Java migration guidance, and selected Kotlin and AI coding resources.

## Source excerpt

This month's Java Annotated Monthly brings you the latest Java news, a generous dose of AI-focused articles, Kotlin updates, and highlights from a variety of technologies and frameworks, plus plenty more worth adding to your reading list. Our featured writer, Aicha Laafia, takes a closer look at upcoming JEPs and shares her key findings on [...]