--- title: "Java Weekly, Issue 661" url: https://daily.dev/posts/java-weekly-issue-661-fonebfmpn source_url: https://feeds.feedblitz.com/~/968274254/0/baeldung~Java-Weekly-Issue type: article source: "Baeldung" published: 2026-08-26T17:29:00.499Z updated: 2026-08-26T17:29:56.804Z tags: ["java", "spring-boot", "quarkus", "jdk"] reading_time: 3 upvotes: 0 comments: 0 language: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Java Weekly, Issue 661 **[Baeldung](https://daily.dev/sources/baeldung)** · 3 min read · 0 upvotes · 0 comments ## Summary This weekly roundup covers JDK 27 reaching its first release candidate with compact object headers enabled by default and G1 becoming the default garbage collector everywhere, alongside early JDK 28 features like an incubating Simple JSON API. It also links a Netflix Tech Blog piece on the evolution of the Conductor orchestration engine, a batch of framework and library upgrades (Spring Boot 4.1.1/4.0.8, Spring AI 2.0.1, Spring Cloud, Spring Batch, Spring Modulith, GraalVM, Quarkus, Elasticsearch, Grails, Micronaut, Payara, Micrometer, BoxLang, Oracle Jipher), and additional reads on compiler design, agent authorization patterns, and Git tooling. It closes by promoting the free virtual IntelliJ IDEA Conf happening September 8-9, 2026. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What garbage collector is the default in JDK 27? G1 becomes the default garbage collector everywhere in JDK 27, which has reached its first release candidate. That release candidate also ships with compact object headers turned on by default, and structured concurrency is now in its seventh preview iteration ahead of the JDK 28 development cycle. _Follow daily.dev for JDK release milestones before planning a JVM upgrade._ ### What is the first new feature planned for JDK 28? JDK 28 development starts with an incubating Simple JSON API, giving developers a built-in way to work with JSON without pulling in a third-party library. This follows JDK 27's release candidate, which locks in compact object headers and G1 as the default collector. _Track early JDK 28 incubator features on daily.dev before they land in a stable release._ ## Similar posts on daily.dev - [Java Weekly, Issue 642](https://daily.dev/posts/java-weekly-issue-642-4s9ng1xjl) · Baeldung · 1 upvotes · 0 comments - [Java Weekly, Issue 650](https://daily.dev/posts/java-weekly-issue-650-ytbn93hcp) · Baeldung · 7 upvotes · 0 comments - [Java Weekly, Issue 647](https://daily.dev/posts/java-weekly-issue-647-sxafsgauq) · Baeldung · 4 upvotes · 0 comments --- Tags: [#java](https://daily.dev/tags/java), [#spring-boot](https://daily.dev/tags/spring-boot), [#quarkus](https://daily.dev/tags/quarkus), [#jdk](https://daily.dev/tags/jdk) [View this post on daily.dev](https://daily.dev/posts/java-weekly-issue-661-fonebfmpn)