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London Java Community

The home for those who work with Java and the JVM

What is LJC about?

The LJC is a broad community of technologists and other associates with Java and JVM-related technologies. Although it is based in London, UK – it has some international membership due to its global programmes (such as Adopt a JSR and Adopt OpenJDK). The LJC hosts regular events including casual catch-ups in a cafe, hack days, evening talks, unconferences, workshops, mentoring, demos, a career mentoring by London’s
Java specialists and much more.

The LJC acts as a voice for Java engineers in London UK as well as globally. This includes but is not limited to creating Adoptium, the world’s leading OpenJDK distribution, representing Java developers worldwide on the Java standards body, and contributing towards charitable works.

Upcoming Event

London Java Community Unconference 2023

The LJC is delighted to announce our Unconference 2023! Join us for a full day of discussions, knowledge sharing, learning, and networking with other developers in the industry. What is an Unconference? An unconference is a loosely structured, participant-driven meeting. You decide what you want to talk and hear about and which topics you want to discuss. It starts with an empty schedule - no topics are mandated and no separations are made between speakers and the audience. All participants work out a schedule by suggesting, planning, holding, and evaluating sessions, collaboratively. Above all else, it's great fun, whether you want to learn or share it's a supportive and safe space to do it in. We’re delighted to welcome Emily Jiang, Java Champion, Fellow of BCS, STSM, Jakarta and MicroProfile Architect @IBM and Liberty Cloud Native Architect & Advocate, as our keynote speaker, with her presentation ‘Java Developers, What Lies Ahead?’ We live in a fast-moving world where new technologies emerge every week, if not every day. This rapid pace of change constantly shifts our responsibilities. In this keynote, Emily will take a quick tour of the current technologies that might enhance our roles. She will then delve into the impact AI brings. Is the role of a Java Developer still needed? Join this session to find out. This is an in-person event, kindly supported by IBM, with the minimal ticket price covering catering and booking fees. Book your place now at the biggest LJC Event of the year! Huge thanks to our Unconference sponsors Fusion Auth and Vonage. This event is organised by RecWorks on behalf of the London Java Community

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Our Initiatives

The LJC has many initiatives, all volunteer lead and founded by our organisers and members. Read about our initiatives below.

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Eclipse Foundation

The Eclipse Foundation is a non-profit organisation that supports open source software development. It provides a place for developers to collaborate on and innovate open source projects. The Eclipse Foundation also provides services to the Eclipse community, such as IP management, ecosystem development, and marketing.

Adopt a JSR

The LJC has a seat on the JCP and runs the Adopt a JSR programme for Java SE (at OpenJDK), Java ME and Java EE (now Jakarta EE).

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Adoptium

The LJC works on OpenJDK, and co-founded Eclipse Adoptium (the successor to AdoptOpenJDK), the world’s leading FREE OpenJDK distribution!

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Microprofile

The LJC is a founding member of microprofile.io –
a new community around building a defacto set of API’s and implementations for Microservices in Java.

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Jakarta EE / EE4J

The LJC is a founding member of Jakarta EE / EE4J – the new home for Java EE at the Eclipse Foundation.

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Sponsor the LJC

The LJC has a multitude of events and global initiatives impacting hundreds of thousands of developers due to the generosity of Recworks, volunteers and key sponsors. You can donate directly or talk to us about a sponsorship package.

Talk to us on Slack

Our LJC Slack group is a vibrant real time community where you can speak with your fellow technologists and world leading experts about topics that matter to you!

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Barry Cranford

Founder / Co-organiser

Know More About Us?

Since it’s inception, RecWorks have always invested in and sponsored the London Java Community both in terms of time and money to power the events. Over the years that relationship has now become more official in that for any placement which came through an LJC event, RecWorks now gives a % of all the placements back to the community. 

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