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Discover the top Java conferences in 2025 with this ultimate guide, featuring insights on 15+ influential events that shape the Java ecosystem. From globally renowned conferences like Devoxx, JavaOne, and Spring I/O to specialized gatherings like JfocUS, qCon, and JAX, this guide covers it all. Learn about the best opportunities for developers to enhance their skills, network with industry leaders, and stay ahead in Java technologies. Other must-attend events include VOXXED Days, JPoint, JCrete, FOSDEM, JavaLand, and DevNexus, along with innovative conferences such as Coderemix, JCON, and ConfOOs. Whether you're interested in microservices, cloud computing, Generative AI, or DevOps, this guide helps you navigate the top conferences in 2025 to accelerate your professional growth and knowledge.
Attending Java conferences is one of the best ways to level up your skills and connect with others in the Java community.
Here’s why every developer should consider going to tech conferences around the world:
I've compiled a list of some of the top Java conferences around the world that every Java developer should consider attending.
Location: Multiple cities worldwide
When: Various dates throughout the year
Devoxx is one of Europe's biggest Java conferences, running since 2001 and attracting thousands of developers at multiple events throughout the year.
Founded by Stephan Janssen (first called JavaPolis), it's now run by local tech communities in different locations like Greece, Poland, and the UK, each happening at different times of the year.
The event is famous for its high-quality content, featuring both world-famous speakers and local experts.
Attendees get to learn about Java, cloud tech, and software architecture through detailed sessions and hands-on workshops.
Planning to attend? Check your local Devoxx schedule
Organizing Team Social:
The Great International Developer Summit (GIDS) is a cornerstone event in the software development world, attracting professionals, thought leaders, and innovators from across the globe. Renowned for its comprehensive approach, GIDS provides a platform for learning, collaboration, and innovation, making it an unmissable event for developers and tech enthusiasts.
The Developer Summit 2025 is set to take place in India from April 22-25.
Organizers: Tina Nuh
Location: Barcelona
Spring I/O, one of the top conferences for Spring developers, takes place in beautiful Barcelona, Spain. Against the backdrop of stunning architecture and Mediterranean culture, developers gather to share their knowledge and passion for Spring technology.
Get all the conference details and register using the link given below:
Organizers Social Link:
LinkedIn: Sergi Almar i Graupera | Twitter: Sergi Almar
JAVAFEST is a prominent annual Java conference in India, usually held in November, and is considered one of the largest tech events in the country.
The conference is primarily organized by the Bangalore Java User Group (JUG) in collaboration with other JUG chapters across India, including Delhi, Mumbai, Kerala, Tamil Nadu, Hyderabad, Nagpur, and Gujarat.
Sessions are shaped by input from Java User Groups (JUG) and engineers from companies like Oracle, IBM, Microsoft, and others, ensuring content aligns with attendee interests.
Planning to attend? Check the link.
Note: JavaFest 2025 dates are yet to be announced.
organizers social:
Location: Multiple cities worldwide
When: Various dates throughout the year
A series of community-focused events organized by the team behind Devoxx, Voxxed Days brings high-quality technical content to local Java communities worldwide. These single or two-day events maintain the high standards of Devoxx while being more accessible to regional developers.
For specific dates of Voxxed conferences in different regions around the world, you can visit the official website at: Registration Link
Where: Stockholm
When: 3rd to 5th Feb 2025
JFokus, the biggest developer conference in Scandinavia, will illuminate Stockholm's winter from February 3-5, 2025. This intimate gathering brings together 1,700+ developers to explore Java, JVM languages, mobile, web, and agile development. Despite its large scale, JFokus maintains a warm, connected atmosphere that makes networking feel natural and meaningful.
Got questions? Find answers and register here
Organizing Team Social:
Location: Multiple cities (London, Boston, San Francisco, New York, and more)
When: Various dates throughout the year
While not exclusively Java-focused, QCon conferences are essential for Java enterprise developers. They offer high-quality technical content, real-world case studies, and excellent networking opportunities with enterprise Java practitioners.
For specific dates of QCon conferences in different regions around the world, you can visit the Official Website
Location: Moscow, Russia
When: April
JPoint is the largest Java conference in Russia.
Moscow's annual spring tech conference JPoint has grown into Russia's go-to destination for Java developers since it first opened its doors in 2013. The Java User Group Russia (JUG Ru Group) organizes the event, which delves into everything from the intricacies of JVM performance to the latest tricks of the Spring framework.
Beyond traditional Java topics, JPoint creates a unique blend of hands-on sessions and technical deep dives. Developers can jump between tracks, exploring Kotlin innovations, mastering database optimization, or tackling complex architectural challenges. Whether you're wrestling with ORM implementations, scaling microservices, or modernizing legacy systems, the conference taps into the practical challenges facing today's Java ecosystem.
The conference has been held in spring in Moscow since 2013. By JUG Ru Group.
Head over here for tickets and full info
Organizing Team Social: JUG Ru Group
JCON is kicking off 2025 in Cologne with a significant event—it's Java's 30th year and their own 10th conference. They've taken over a cinema complex for four days in May (12-15th), which makes for a nice change from the usual conference centers.
You get a full day of hands-on workshops, then three days of talks and networking. It's the kind of place where you can learn about the latest Java stuff while actually meeting the people who build and use it. Plus, watching tech talks from theater seats is way more comfortable than those usual conference chairs.
Thinking of checking it out? Details are up on the given link below:
DevNexus, the world's largest Java ecosystem conference, is gearing up for a special celebration of Java's 30th anniversary from March 4-6, 2025, in Atlanta, GA. This powerhouse event packs 160 speakers, 14 concurrent tracks, and 6 full-day training sessions into three knowledge-rich days.
As the longest-running Java conference globally, DevNexus has earned its reputation for delivering deep technical content across all aspects of Java development. The 2025 edition promises an exceptional blend of hands-on workshops, expert presentations, and valuable networking opportunities, making it a must-attend event for developers looking to stay at the forefront of Java technology. Early registration is now open for those wanting to be part of this milestone celebration.
For more details, visit the link given below:
Organizing Team Social: DevNexus
Organizers:
ConFoo Montreal is a full-stack conference for developers. The conference tackles a diverse range of subjects, from microservices with Micronaut and JDK 21 to application observability, Spring Boot containerization, and Kotlin web development. What makes CONFOO notable is its focus on practical, real-world applications, with sessions like "Bootiful Spring Boot: A DOGumentary" and "Containers All the Way Down.”
Register for Java and JVM Conferences using the below-given link.
Java Day is a dynamic collaboration between Oracle's Java Developer Relations Team and local Java User Groups (JUGs) worldwide. The initiative brings Oracle's Java experts directly to developer communities, helping them advance their programming skills through in-person learning experiences.
Now in its 11th edition in Istanbul (May 10, 2025), Java Day combines deep technical content with local community spirit. The event follows its motto, "From Developers for Developers," offering attendees direct access to Java experts, practical insights, and the latest updates in the Java ecosystem.
Get all the conference and registration details: Java Day Istanbul
Organizing Team Social: Community - Java Day
Organizers:
Location: Las Vegas, USA
When: March
Originally known as JavaOne and now part of Oracle CodeOne, this conference remains one of the largest gatherings of Java developers worldwide. It offers technical sessions, hands-on labs, and community events, with direct access to Oracle's Java team members and decision-makers.
Interested? Check out the full details and registration link
Organizing Team Social:
Location: Nürburgring, Germany
When: April
JavaLand's hitting the Nürburgring this April 1-3. Just picture it—a Java conference at one of racing's most iconic spots. If you jump on tickets before February 6, you'll save some cash with early bird pricing.
What's cool is how they run everything in both English and German. No stuffy conference rooms here—you're learning about Java while soaking in the energy of a place that's seen some of racing's greatest moments.
The program's already out if you want to check what talks you'll catch. They have everything from core Java stuff to cutting-edge enterprise tech lined up.
Got questions? Find answers and register here
Organizing Team Social:
Location: Crete, Greece
From August 4–8, 2025 (starting the evening of August 3rd), JCrete® brings Java enthusiasts to the beautiful island of Crete for a one-of-a-kind open spaces conference. I
Here, you don’t just attend—you pay for everything. From the conference facility and meals to your travel, accommodation, and even JCrete swag, every cost is yours to cover. There are no sponsors, no conference fee—just a passion-driven community.
And it’s not just the setting that’s unique. At JCrete, you’ll find yourself discussing Java topics while floating in the Mediterranean, hacking on open-source projects, or enjoying meals with fellow attendees. Morning sessions take place outdoors, and afternoons are free for informal chats, networking, or simply soaking in the island vibes.
Bring your ideas, your swimsuit, and your wallet—this is Java with a twist!
JCrete® is an exclusive, invitation-only event. There is no registration fee; attendees cover their own share of the venue costs, and seats cannot be purchased.
For more details, check the link
Organizing Team Social:
When: 1–2 February 2025
Where: Brussels, Belgium
FOSDEM (Free and Open Source Software Developers' European Meeting) is one of the largest events for open-source enthusiasts, drawing over 8000 developers and is free.
Most events, including talks, hacking sessions, and open discussions, take place in dedicated developer rooms (devrooms). These rooms are organized and managed by individual open-source projects or collaborations between multiple projects centered around a shared topic, fostering greater collaboration.
This conference is not specific to Java only but has developer rooms for Java enthusiasts also.
Java developers can head to the Free Java Devroom, which hosts engaging talks and discussions.
Check the schedule here
FOSDEM also includes lightning talks, where speakers get 15 minutes to share innovative ideas, open-source projects, or unique concepts—perfect for quick inspiration.
Got questions? Find answers here
Organizing Team Social: Wouter Verhelst
While not strictly a Java conference, Code Remix Summit in Miami (May 12-14, 2025) should be on every Java dev's radar.
The event provides an opportunity to interact directly with the technology that is revolutionizing the way we manage legacy code and modernization, a topic that Java developers are intimately familiar with.
The summit offers a robust Hack Track, enabling you to develop proof-of-concepts using tools such as OpenRewrite. One major bank saved 50,000 hours on Java migrations using these techniques—that's the kind of practical win you can take back to your team.
They're running three focused tracks: practitioner (think codebase modernization and auto-refactoring at scale), leadership (for the bigger picture folks), and hands-on hack sessions.
Want the specifics? You'll learn:
Head over here for tickets and full info: Registration Link
JAX is one of the premier events for Java professionals, offering an unparalleled opportunity to dive deep into the latest trends, innovations, and best practices in the world of software development.
Taking place annually, this conference brings together experts from across the globe to explore cutting-edge topics such as Java 21-23, generative AI, microservices, cloud-native solutions, and the evolving landscape of DevOps.
With a mix of insightful sessions, hands-on workshops, and keynotes from industry leaders, JAX London is designed to empower developers, architects, and IT professionals to embrace the future of technology.
Depending upon the location, the language of the conference changes. The event will be held in London, Mainz, and New York, under the names JAX London and JAX Mainz.
For more details, click the given links below:
