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Rolling Your Own: Domain-Specific Languages in Java
Rolling Your Own: Domain-Specific Languages in Java Domain-specific languages (DSLs, or “little languages” as they’re sometimes known) can have great benefits for making your source code more readable, correct, and maintainable and overall provide improvements to the efficiency of the whole team. Everybody has seen and used DSLs before, be it good old SQL, or languages like Docker, Kubernetes, Fn Flow, Terraform, or GraphQL. But isn’t it difficult to build and maintain your own language? In this talk, Dr Steffen Zschaler hopes to convince you otherwise. Through a series of live-coding examples, we will explore different ways of building helpful DSLs quickly. We will start by looking at how to use fluent interfaces for your APIs to build a simple DSL directly embedded in your Java code. While this makes for great readability, we will soon reach the limits of this particular technique. We will then look at building our own DSL outside of Java, complete with IDE integration and translation into full-blown Java code. We will use the Xtext language workbench, which makes it easy to get our DSL off the ground quickly, get great IDE integration with a minimum amount of work, and maintain all of the language definition in a standard Git repository. About the speaker Dr Steffen Zschaler is a senior lecturer in computer science at King’s College London. He has been researching domain-specific languages, software modelling, and code generation for almost 20 years and has built a number of tools as well as developing foundational theory. Steffen is always looking to convert people to the benefits of using domain-specific languages as part of their development workflow and is happy to discuss this at length with or without drinks at hand. Agenda 6.30pm - Doors open 6.45pm - Rolling Your Own: Domain-Specific Languages in Java (approx 90 minutes) 7.30pm - Break 7.50pm - Talk continues 8.35pm - Finish This is a placeholder for the event being run on Eventbrite: https://www.eventbrite.co.uk/e/rolling-your-own-domain-specific-languages-in-java-tickets-53048846528 . Please ensure you sign up with your full name. Big thanks to Skills Matter for providing the venue and our sponsors Gridgain for the pizza! This event is organised by RecWorks on behalf of the London Java Community. You can see our latest jobs here: https://recworks.co.uk/java-developer-jobs-london/. You can see our privacy policy here: http://recworks.co.uk/privacy-policy Continue the conversation at our Slack Group: https://londonjavacommunity.slack.com Sign up here if you're not a member: https://barrycranford.typeform.com/to/IIyQxd

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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?

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: http://www.meetup.com/Londonjavacommunity/about/comments/?op=all

For further information see our blog here: https://londonjavacommunity.wordpress.com/sign-up/ Do not hesitate to get in touch with any questions.

Barry Cranford
Founder of London Java Community

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