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David Delabassee

Inside Java

Spring AI 2.0 released in June 2026 and is one of several projects ensuring Java's continued strength in enterprise AI development. Here are some tips on deterministic agents, MCP servers and skills, prompt engineering, and where Java's richness for AI solutions stems from.
 
In this "Input/Output" episode of the Inside Java Podcast, recorded during JavaOne 2026, Lize Raes talks to Dan Vega, Spring Developer Advocate at Broadcom, Java Champion, speaker, and author.
 
"Input/Output" is our new show, where we talk to people outside of OpenJDK to bring you their perspectives and insights into what's happening in the Java ecosystem.

"AI Solutions with Spring AI 2.0 and Java" [I/O]

JDK 27 entered Ramp-Down-Phase 1 in early June, so we can go over its features. Valhalla's first JDK Enhancement Proposal (401) will likely be part of JDK 28. Show off your Java ideas in the "Modern Java in the Wild" hackathon. There are two interesting articles for those who want to dive deeper into AOT with agents or into using GPU tensor cores from Java.
 
Links:
 
 • JDK 27 JEP list: 
https://openjdk.org/projects/jdk/27/ • Valhalla mail: 
 https://mail.openjdk.org/archives/list/jdk-dev@openjdk.org/threadAIA3O3LHFZ6T7TIPH7KZT4WS4B6U72U5/ • JEP 401 PR: 
https://github.com/openjdk/jdk/pull/31120 • "Java in the Wild" hackathon: 
https://www.hackster.io/contests/modern-java-in-the-wild • AOT vs agents: 
https://bugs.openjdk.org/browse/JDK-8387190 • AOT and JVMTI agents: 
https://bugs.openjdk.org/browse/JDK-8387194 • "Exploiting GPU Tensor Cores": 
 https://openjdk.org/projects/babylon/articles/hat-tensors/hat-tensors

"JDK 27 + Valhalla, Now! + Hackathon" [IJN]

OpenJDK recently resurrected Project Detroit, an effort to ease Java's interoperability with Python and JavaScript. Interestingly, while both integrations will work through the _java.scripting_ API, there are still differences between them. On top of that, the JavaScript integration needs to explain how it related to the removal of Nashorn in JDK 16.
 
In this "Ask the Architect" episode of the Inside Java Podcast, recorded during JavaOne 2026, Nicolai Parlog talks to Mikael Vidsted, lead of the Java Virtual Machine team at Oracle, about Project Detroit.
 
Project Detroit: https://openjdk.org/projects/detroit/

"Scripting JS and Python with Project Detroit" with Mikael Vidstedt [AtA]

JDK Enhancement Proposals are OpenJDK's vehicle for documenting and communicating substantial changes of the Java language, its APIs, and the runtime but also the JDK project itself, for example when it comes to development processes. Their well-defined structure and the immense care that goes into writing them make them eminently readable and understanding them well is essential to understanding Java's development.
 
 In this "Ask the Architect" episode of the Inside Java Podcast, recorded during JavaOne 2026, Nicolai Parlog talks to Alex Buckley, the Guardian of the JEP process.

"How JEPs Drive Java's Evolution" with Alex Buckley [AtA]

Java's use of memory, often chided for being excessive, is actually a strength as it trades more memory use for fewer CPU cycles. Java can only make this tradeoff due to its moving garbage collectors, something more memory efficient platforms often cannot. But what's the point in leaving available memory on the table if using it makes your program run faster? Efficient use of that resource wouldn't be to leave it untapped but to use it to speed up the program.
 
In this "Ask the Architect" episode of the Inside Java Podcast, recorded during JavaOne 2026, Nicolai Parlog talks to Ron Pressler, Java Architect at Oracle.

"Java *is* Memory Efficient" with Ron Pressler [AtA]

With JDK 27 introducing hybrid key exchange schemes that combine ML-KEM with traditional ECDHE algorithms, Java applications can gain TLS-layer protection against the harvest-now, decrypt-later threat without rewriting business logic.
 
In this episode of the Inside Java Newscast, Ana explains post-quantum hybrid key exchange for TLS 1.3 and demonstrates how a Java application can take advantage of it.
 
See https://inside.java/podcast

"Java Gets Post-Quantum TLS" [IJN]

Flexible constructor bodies were added to Java 25 with JEP 513. In this episode of the Inside Java Newscast Billy Korando will review the issues with how constructors used to work before Java 25, either forcing developers to write convoluted code, or in some cases undermining the safety and integrity of child classes. Billy will then cover how flexible constructor bodies address these issues and how Java developers can use them to write safer code and better designed applications.
 
Make sure to check https://inside.java/podcast

"Make Java Safer with Flexible Constructor Bodies" [IJN]

In JavaOne 2026's closing session, audience members had the opportunity to ask the Java architects questions. They asked about the state of structured concurrency and Project Babylon, how Java is being developed and the role AI plays in that process, the architects' pet projects, and whether they would ever consider breaking backward compatibility, etc. 
 
Make sure to check https://inside.java/podcast

"Ask the Architects at JavaOne'26" [AtA]

With JDK 26 / JEP 500 starting to prevent final field mutation through reflection, it is important that Java projects stop employing that practice.
 
For more, check https://inside.java/podcast

"You Must Avoid Final Field Mutation" [IJN]

G1 is Java's default garbage collector in most environments, and its throughput has been considerably improved in JDK 26 by streamlining its write barriers. This conversation explores the background of that change and dives deep into regions, write barriers, concurrent marking, card tables, and how all that impacts throughput before eventually getting to the improvements made in Java 26, which lay further groundwork to G1 becoming the one and only default collector across _all_ environments.
 
In this "Ask the Architect" episode of the Inside Java Podcast, recorded during JavaOne 2026, Nicolai Parlog talks to Stefan Johansson, Hotspot Garbage Collection engineer at Oracle.
 
For more, check https://inside.java/podcast

"How JDK 26 Improves G1's Throughput" [AtA]

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