What we’re about
The London Java Community (LJC) is a group of Java Enthusiasts who are interested in benefiting from shared knowledge in the industry. Through our forum and regular meetings you can keep in touch with the latest industry developments, learn new Java (& other JVM) technologies, meet other developers, discuss technical/non technical issues and network further throughout the Java Community.
FAQ
What is the LJC?
What goes on in the LJC?
Who can join?
Is there a fee to Join, is there a fee for the events?
How do I join?
Do you have to go to every presentation?
Where are the events held?
Can I read some member feedback?
Can I give a presentation to the LJC?
What is the LJC?
The LJC is an official Java User Group for developers based in London. It was founded in November 2007 and since then has grown to over 5000 members and is now the biggest Java User Group in the UK.
What goes on in the LJC?
We run a variety of regular events ranging from social events and technical presentations to our full day unconference. On top of the events we run prize draws and have an active mailing list/forum. We support the Graduate Development Community in London and promote London based Open Source Software projects where possible.
Who can join?
Membership is restricted to Java developers working in or around London (or those hoping to train in Java, or relocate to London). Membership will not be granted to those involved in the recruitment industry.
Is there a fee to Join, is there a fee for the events?
It’s completely free to join and 99% of our events are completely free. The only event which is charged for is the Unconference, the charge is minimal and it is there to cover refreshments on the day.
How do I join?
Just click on the link on this page to sign up to the mailing list, you'll hear of all of our latest news and events and can take part in the monthly prize draws.
Do you have to go to every presentation?
Absolutely not – it’s completely up to you which events you attend and which you don’t. Every event attracts a different crowd.
Where are the events held?
Europe's Premier technical training company, Skills Matter (Barbican) sponsor most of our events by providing the venue.
Can I read some member feedback?
We have been collecting feedback for the last few years from our members you can read it here: https://www.meetup.com/Londonjavacommunity/about/comments/?op=all
Can I give a presentation to the LJC?
We run various in-person and online events, and welcome highly experienced speakers, all the way through to those just starting out. If you have a presentation you'd like to submit for consideration, please visit https://sessionize.com/ljc
For further information see our blog here: https://londonjavacommunity.wordpress.com/s... Do not hesitate to get in touch with any questions.
Barry Cranford
Founder of London Java Community
Upcoming events
3
LJC Meetup at Neo4j - Smarter Context, Safer Code: Graphs and AI in Action
Neo4j, 182-194 Union Street London SE1 0LH United Kingdom, London, GBPlease register on Eventbrite to join this event.
About this event
LJC Meet-ups is a new series of events, aimed at giving all Community members an opportunity to present at an LJC event.
We're excited to invite you to our next Meetup, co-hosted with neo4j!
Join fellow graph enthusiasts, Neo4j developers, and members of the Java community as we explore how graphs, knowledge graphs, and context engineering can unlock smarter applications and better answers.We’ll also uncover how AI-generated code can be weaponized, exposing hidden vulnerabilities in the software we trust.
Whether you’re curious about building with graph-powered AI or safeguarding your projects from new threats, this meetup will give you insights you can put into practice.Session 1: AI in Your IDE: Supercharging Java Coding with GitHub Copilot by Ashu Swami
Learn how GitHub Copilot is transforming the Java development workflow inside IntelliJ IDEA. This session highlights Copilot+ibk's hidden gems, from crafting custom instructions and generating intelligent commit messages to performing AI-powered code reviews.
Through live demos, learn how to integrate these features into your daily development to boost productivity, improve code quality, and code with greater ease and confidence. See how AI can truly become your coding partner in the IDE.
BIO:
Ashu Swami is an Oracle Certified Java Professional and holds multiple AWS certifications with over 18 years of experience in software development. She currently works as a Principal Application Engineer at Discover Financial Services, UK, specialising in Java, Spring Boot, RESTful Microservices, and AWS cloud solutions. Ashu has a strong background in the finance and insurance domains, delivering scalable and secure and high-performance enterprise applications. Ashu is a big AI tools enthusiast, passionate about leveraging AI and Cloud technologies to enhance Software delivery and quality.Session 2: WhatsThat? Using graphs and AI to make sense of your friends WhatsApp group by Martin O'Hanlon
Communication, messaging, and memory are complicated. How are you supposed to keep up with it all? It's difficult for you to keep up with the constant stream of messages you get. How can we expect an LLM to do the same? Let's look at how we can use graphs and AI to summarise the complex streams of messages you get in that oddly titled WhatsApp group.
We look forward to connecting with the community to exchange ideas on graphs, tech, and AI - join the discussion!
Please register on Eventbrite to join this event.
2 attendees
Ignite the Holidays: LJC & vJUG Year-End Celebration
Tessl AI Limited, 210 Pentonville Rd London N1 9JY United Kingdom, London, GBPlease register on Eventbrite to join this event.
About this event
Join the London Java Community and Virtual JUG for a festive evening of fast, fun, and fiery Ignite talks
The London Java Community (LJC) and Virtual JUG (vJUG) are joining forces for a holiday-season party packed with Ignite talks, prizes, and good company hosted at Tessl’s premises in London and supported by our LJC Sponsors.
Expect fast-paced Ignite talks from Java Champions Simon Maple and Steve Poole, along with Dan Hardiker of Devoxx UK fame — and maybe a few surprise guests — and you too can jump in to tackle the Ignite challenge!
What’s an Ignite Talk?
Each speaker gets five minutes, twenty slides, and the slides auto-advance every fifteen seconds. It’s equal parts insight and improvisation — the perfect mix of learning and entertainment. Talks can cover anything from Java, DevOps, and architecture to the weird and wonderful sides of technology.If you’d like to take part, submit your talk via https://sessionize.com/london-java-community-2025-party/
Prizes and Surprises
We’ll be handing out prizes for categories such as:- Best Overall Talk
- Most Festive Deck
- Best Meme Usage
- Best Audience Question
- Most Festive Attendee Outfit
- Most Java-Related Attendee Outfit
- And a few surprise categories announced on the night
There’ll also be recognition for the most creative, energetic, and entertaining Ignite speakers — and a few giveaways from our LJC Sponsors throughout the evening.
Food and Drinks
We’ll provide simple, social food and drinks to keep the energy up. Details will be confirmed closer to the event.Livestream
Can’t make it in person? We’ll be livestreaming the Ignite sessions via the vJUG so you can join from anywhere.Tickets
A small ticket fee helps cover catering and manage attendance. Capacity is limited to around 70 people, so book early to secure your place.Agenda
5:00 pm – Doors open and welcome drinks
6:00 pm – First round of Ignite talks (five talks)
7:00 pm – Break, food, and networking
7:45 pm – Second round of Ignite talks (five talks)
8:30 pm – Prizes, thank-yous, and wrap-up
9:00 pm – Optional afterparty nearbyWho Should Attend
This event is open to developers, architects, DevOps engineers, students, and anyone curious about the Java ecosystem. Whether you’re a regular at LJC meetups or just looking to meet the community for the first time, this is the perfect mix of learning, laughter, and networking in a relaxed festive setting.Join us for an evening of ideas, energy, and community spirit — and help us end the year on a high note.
Thanks to Tessl for hosting and to our LJC Sponsors for supporting this event with prizes, refreshments, and festive cheer.
Please register on Eventbrite to join this event.
1 attendee
London Java Community UnConference 2025
Redis Office, Floor 5, Redis office, Bridge House, 4 Borough High St, London SE1 9QQ, London, GBPlease register on Eventbrite to join this event.
About this event
The London Java Community winter UnConference 2025: a full day of open discussions, and spontaneous sessions led by the community, for the community.
Doors open at 9:00am, sessions start at 9:30am, and we’ll wrap up around 5:00–6:00pm (or whenever we finally have to send everyone home). Expect great conversations, food, drinks, and plenty of hallway track time with Java developers from across the UK and beyond.
Tickets cost £35 and include food and refreshments throughout the day.
1 attendee
Past events
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