January 2022 - jChampions Conference Watch Party

The Dublin Java User Group is hosting a WATCH PARTY of the jChampions Conference 2022 on the afternoons and evenings of Thursday 20th, Friday 21st, Monday 24th and Tuesday 25th January at TechMeetup.Space in tcube, No.1 O'Connell Street.

Monday's session will also see local Java Champion Rafael del Nero present his session live from DubJUG.


The Dublin Java User Group events are designed to enrich the knowledge and careers of developers and technology professionals. By booking your seat, you agree to the booking conditions

COVID-19: Attendees must be "fully vaccinated", bringing your cert and ID with you. People will be seated 2m apart which means spaces are limited. Pre-booking, therefore, is essential. No booking or Covid cert - no entry!


Interested in meeting Java Rockstars? Check out our other Dublin Java User Group events - DubJUG.org

SEAT BOOKING - Select Days You Require

Subscribe for further event details

Event map

Additional Information

Session Abstracts

For Bio's and Abstract visit jChampionsconf.com

Thursday 20th (Book Day One Ticket)

14:00 - Simple, modern Java microservices in the cloud
Andrzej Grzesik

15:00 - Understanding CPU Microarchitecture
Alex Blewitt

16:00 - By the power of Java : Main of the Cloud-ivers !!!
Jonathan Vila

17:00 - Effective Java SE 9 through 16 APIs/Lang features, makes your life easier
Mohamed Taman

18:00 - Architecturally Evident Java Applications with jMolecules
Oliver Drotbohm

19:00 - Getting Started with Serverless Java
Alan Williamson

20:00 - Functional Programming in Java, Kotlin, and Groovy
Ken Kousen

Friday 21st (Book Day Two Ticket)

14:00 - MicroProfile 4.1, 5.0 and Beyond
Emily Jiang

15:00 - Prepare for what "Loom"s ahead
Heinz Kabutz

16:00 - The Secrets of the Fastest Java Developers on Earth
Victor Rentea

17:00 - Novel uses of Core Java
Peter Lawrey

18:00 - 5 tips on creating modern, cloud-native applications
Rustam Mehmandarov

19:00 - The Revolving Door Performance Anti-Pattern
Kirk Pepperdine

20:00 - Survival Guide for the Java Architect in the Cloud Era
Otavio Santana

Monday 24th - Book Day Three

On this day, Java Champion Rafael del Nero, will present his session live from DubJUG

14:00 - Java 17 and beyond--what does it mean for teaching and learning Java?
Cay Horstmann

15:00 - Continuous Performance Regression Testing with JfrUnit
Gunnar Morling

16:00 - Get Ready for Jakarta EE 10!
Ivar Grimstad

17:00 - Duke’s Star Trek with Java 17 Code Challenges
Rafael del Nero & Paul Webber

18:00 - (Mis)Understanding Cloud Native (Two Speakers)
Rustam Mehmandarov & Ana-Maria Mihalcanu

19:00 - Project Loom: Revolution in concurrency or obscure implementation detail?
Tomasz Nurkiewicz

20:00 - Benefits of MQTT for IoT Apps and Beyond
Mary Grygleski

SPECIAL GUEST! Rafael del Nero will present his session live at the DubJUG event!

Tuesday 25th (Book Day Four Ticket)

14:00 - Eclipse Jifa: Tools for Troubleshooting Java Application in the Cloud
Sanhong Li

15:00 - Query your codebase using CodeQL
Benjamin Muskalla

16:00 - Upside Down
Ixchel Ruiz

17:00 - Upgrading a Legacy Java EE App with Style
Kito Mann

18:00 - Front and Center! JavaFX with Spring Boot
Paul and Gail Anderson

19:00 - OWASP Top Ten 2021
Jim Manico

20:00 - Kubernetes Native Java
Josh Long

(Schedule correct as of 14th Jan - subject to change https://jchampionsconf.com/

About the Oracle Dublin Java User Group

The Oracle Dublin Java User Group, aka DubJUG, is Ireland's oldest JUG serving Java developers in Ireland. Since 2006, the Group has been bringing Java Champions, Java One Rock Stars, and Duke Award winners to Dublin for the benefit of our community of Java software professionals. Oracle is the current Headline Partner.

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Aside from our website DubJUG.org, we can also be found on your favourite social networks. LinkedIn / Facebook / Twitter

DubJUG Partners

Our headline partner, Oracle is committed to offering choice, flexibility and a lower cost of computing for customers, and demonstrate this commitment by investing significant resources in developing, testing, optimizing, and supporting a wide variety of open source technologies.

For further details on some of the open source technologies in Oracle Cloud please visit developer.oracle.com/opensource

Oracle Cloud is the industry’s broadest and most integrated public cloud. It offers best-in-class services across software as a service (SaaS), platform as a service (PaaS), and infrastructure as a service (IaaS), and even lets you put Oracle Cloud in your own data centre. Oracle Cloud helps organisations drive innovation and business transformation by increasing business agility, lowering costs, and reducing IT complexity.

Website: Oracle / Twitter: Oracle_UKI


Stackand.Co enrich the professional lives of Java / Scala software professionals - with over 20 years experience in the Irish ICT market, they have helped many great people elevate their careers.

Perhaps they can do the same for you working with companies like this one?

Website: Stackand.Co / Twitter: StackanddotCo


Version 1 is a trusted technology partner to major domestic and international customers across all industry sectors in the UK and Ireland. Their Java practice has grown to over 120 people over the last few years, and continues to grow. Many of their Java customers use a significant amount of open-source tools and technologies, and therefore Version 1 work with the community to hear other Java success stories, learn more about people’s experiences, and bring in Java experts and champions to get the latest on what’s going on in that space.”

Website: Version1.com / Twitter: Version1Tweets


Global Payments Inc makes it easy for business to accept payments online, on mobile and in-app blending global coverage, local expertise and the best possible service to help drive business growth. Headquarted in Atlanta, they have a thriving technology division based on Sir John Rogerson's Quay.

Website: GlobalPaymentsInc.com / Twitter: GlobalPayInc

Equifax Technology Ireland is the Research and Development arm of global credit scoring organisation Equifax - it has recently opened a technology centre in the Bloodstone Building, Dublin 2.

Now looking for developers!

Website: Equifax.com / Twitter: Equifax


GuruTeam delivers high end ICT learning, mentoring and consultancy services, in Ireland, the UK and worldwide. Their expert instructors formulate bespoke training to suit their clients and can deliver programmes on or offsite.

Website: GuruTeamIrl.com / Twitter: GuruTeamIreland


Hazelcast delivers the System of Now™, an in-memory computing platform that empowers Global 2000 enterprises to deliver innovative, low-latency, data-centric applications

Website: Hazelcast.com.com / Twitter: @Hazelcast


Technology companies JetBrains, Synchronoss, FINEOS, and Solvers also support our community - find out more about them here.


Companies. If you would you like to discover the benefits of partnering with Ireland's longest serving and most active community group for Java developers, please get in touch here