JVM Language Summit

August 4–6, 2025
Oracle Auditorium
Santa Clara, California, USA

We are pleased to announce the 2025 JVM Language Summit to be held at Oracle's Santa Clara campus on August 4–6, 2025.

The JVM Language Summit is an open technical collaboration among language designers, compiler writers, tool builders, runtime engineers, and VM architects. We will share our experiences as creators of both the JVM and programming languages for the JVM. We also welcome non-JVM developers of similar technologies to attend or speak on their runtime, VM, or language of choice.

Presentations will be recorded and made available to the public.

This event is being organized by language and JVM engineers—no marketers involved! So bring your slide rules and be prepared for some seriously geeky discussions.

Format

The Summit is held in a single classroom-style room to support direct communication between participants. About 80–100 attendees are expected.

The schedule consists of a single track of traditional presentations interspersed with less formal, multi-track “workshops” and, possibly, impromptu “lightning talks”.

Workshops are open discussion groups with only a small amount of prepared material. We ask each registrant to suggest a few topics of interest. After choosing the most popular topics, we'll ask some registrants if they would like to act as discussion leaders.

Why Should I Attend?

Two and a half days of technical presentations and conversations about programming languages and the JVM.
Prepared talks by numerous visiting language experts, OpenJDK engineers, and other Java luminaries.
Many opportunities to visit and network with your peers.
A catered reception at Oracle's Santa Clara campus on Tuesday evening.
A chance to help shape the future of programming languages on the JVM.

Registration

As space allows, we are open for registration at register.jvmlangsummit.com. Speaker registration ended May 30.

Regular attendees: Please register as a General Attendee. To cover costs, we are charging a conference fee of $495. Space is limited; if there are no available slots, send us an email and we'll let you know if we end up with more openings.

Oracle employees: Oracle employees interested in attending (but not speaking) should register as an Oracle Attendee. There is no fee, but you must get approval to attend from your manager. There may be more interested employees than there is space available, so all Oracle Attendee registrations are provisional; you will be notified if your registration can be accommodated.

Code of Conduct: All registrants should review the Oracle Event Code of Conduct.

Questions? Please send inquiries to info2025@jvmlangsummit.com.

Instructions for Speakers

For a successful speaker submission, please note the following:

All talks should be deeply technical, given by designers and implementors to designers and implementors. We all speak bytecode here!
Each talk, we hope and expect, will inform the audience, in detail, about the state of the art of language design or implementation on the JVM, or will explore the present and future capabilities of the JVM itself. (Some will do so indirectly by discussing non-JVM technologies.)
Know your audience: attendees may not be likely to ever use your specific language or tool, but could learn something from your interactions with the JVM. A broad goal of the summit is to inspire collaboration on JVM-based technologies that enable a rich ecosystem at higher layers.

The conference will be recorded professionally for posting on the Internet. We'll reach out to discuss any special arrangements you require and to complete an appropriate release form.

Previous Summits

2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2023, 2024

Our short URL is jvmlangsummit.com. It redirects into the OpenJDK Da Vinci Machine Project.