You are currently browsing the monthly archive for April 2014.

The LJC is voting No on the Final Approval Ballot for JSR 48  (WBEM Services Specification). As this decision may surprise the community, we wanted to ensure that the reasons behind this are fully understood.

The No vote is purely a procedural measure. During the discussion of this JSR, it came to light that the license that the Reference Implementation conflicts with the terms of the JSPA and is therefore not valid. Were the Final Approval Ballot to pass, the resulting standard would be impossible to implement and useless to the community.

The LJC, along with IBM, SAP and the JCP PMO, met with the Spec Leads and resolved the issues around licensing. The EC has agreed that the Final Approval Ballot must fail, and EC members will accordingly vote it down. The JCP process contains a contingency measure for circumstances like these, known as a Final Approval Reconsideration Ballot.

This Ballot allows the Spec Leads to correct any problems & resolve concerns before resubmitting within 30 days – effectively a second chance. The Spec Leads indicated that they intended to do so, and to resubmit the JSR with a modified RI license.

During the meeting with the Spec Leads, some ecosystem questions regarding the health of the ecosystem for this technology, and the number of participants were also addressed. The Spec Leads were able to point to a wide variety of companies and projects participating, so on this basis, the LJC is happy to support this JSR.

A number of minor technical questions were also discussed – and the Spec Leads agreed to address some of them by releasing the source code for the TCK for this JSR – and to produce a new JSR for a version 2.0 after the initial release to fix any bugs found by the community.

The LJC JCP Committee would like to thank the Spec Leads for making time to meet and address concerns at very short notice, and for their perseverance in completing the JSR process.

As always, if you’re an LJC member and interested in our work in the standards & specification space – please contact one of the committee – we’re very happy to talk about our ongoing projects, and there are always ways to get involved.

Hi everyone,

I hope you are all had a lovely week and enjoying the warmer weather, lets hope summer is on its way. Looking forward to seeing a lot of you at the AWS event next week. In the mean time if any of you are interested in getting involved in any other events, here is a list of what is happening over the next two weeks.

Tuesday 8th April
AWS at scale
A look into using Amazon Web Services (AWS) at large scale. Infrastructure and platform as a service are rapidly growing as means to provide highly available, fault tolerant and hugely scalable applications. Take an in-depth look at services available on the AWS cloud, along with strategies, best practices, code examples and demos to allow you to successfully deploy, maintain and monitor mission critical applications on AWS.
London Java Community

Tuesday 8th April
Code & Coffee (Old street)
Code & Coffee is a cool meeting for those who like coffee and love writing code. The idea is simple. Just come along and you may find other developers writing some code before going to work while drinking some coffee and/or having breakfast.
Look mum no hands!, 49 Old Street, London, EC1V 9HX
London Software Craftsman Community

Wednesday 9th April
Code & Coffee (South-East London)
Code & Coffee is a cool meeting for those who like coffee and love writing code. The idea is simple. Just come along and you may find other developers writing some code before going to work while drinking some coffee.
Emperor House, Unit C, Dragonfly Place, SE4 2FL, London
London Software Craftsman Community

Wednesday 9th April
7 languages in 7 weeks: Haskell day 3
A workshop run in the Code Dojo format for people reading and working through the Pragmatic Programmers book “Seven Languages in Seven Weeks” by Bruce Tate. This is the third day of Haskell.
London Code Dojo

Thursday 10th April
We’ll be talking storage, namely Google File System ( and Colossus (
Paper Cup – The Reading Club

Saturday 12th April
Hack the Tower – April 2014 hack day is a hack day for any and all developers to come and collaborate on projects or simply discover new technologies together and enhance their skills. Bring your laptop and your desire to learn and have fun!
Whether you want to build Java, Groovy, Scala, or Clojure apps, experiment with OpenJDK 8, get to grips with Git & Github, deploy apps with Heroku, try out one of the NoSQL databases like MongoDB or Neo4j or make some some robots dance, there are plenty of interesting things to work on.

Monday 14th April
Evening Code and Coffee / Craft Beer
Every fortnight, we meet for coffee, code, craft beer, and some great food.
This is a great opportunity to:
• meet other cool software craftsmen
• work on pet or open source projects
• pair with someone else on whatever you like (katas, koans, etc)
• ask someone to join or help you with your own project
• have a face-to-face meeting with your mentor or mentee
• have a nice chat over coffee and beer
We’ll be meeting in “Look mum no hands!”, a laptop friendly cafe/bar that’s open until 10pm, and sells great coffee, excellent beers, and some tasty food. They also repair bikes and hang them from the ceiling like chandeliers, because why not?
London Software Craftsman Community

Tuesday 15th April
Code & Coffee (Central London)
Code & Coffee is a cool meeting for those who like coffee and love writing code. The idea is simple. Just come along and you may find other developers writing some code before going to work while drinking some coffee and/or having breakfast.
55-56 Oxford Street, Marylebone London, W1R 1RD, London
London Software Craftsman Community

Tuesday 15th April
Code & Coffee (London Bridge)
Code & Coffee is a cool meeting for those who like coffee and love writing code. The idea is simple. Just come along and you may find other developers writing some code before going to work while drinking some coffee and/or having breakfast.
Pret A Manger
Victor Wharf, Clink Street, London SE1 9DG, London
London Software Craftsman Community

Wednesday 16th April
Development Testing: What, Why, and How
Development testing is a software development practice that brings quality assurance activities into the software development process. Development testing has the potential to reduce risk, time, and costs associated with software development, while improving architecture and maintainability of the resulting software artifacts. While development testing is frequently equated with unit testing, the spectrum of possible activities is much broader and ranges from code reviews and automated testing to static code analysis, metrics analysis, and code coverage analysis. In this talk we will take a broad look at development testing, examine how it fits in a software development process, and discuss some strategies for introducing development testing in both greenfield and legacy software projects..
London Java Community

Wednesday 16th April
Jon Pretty: Batshit Crazy Algebra with Types
What would it mean to “add” or “multiply” types like Boolean and List[Int]? Would you think me mad if I applied the quadratic formula to a type, expanded its power series, then tried to justify using this to count binary trees? And what interpretation could I possibly attribute to differentiating types, and what’s this got to do with zippers? I’ll leave my mathematical rigour at home, and go a bit wild with types and algebra. And hopefully show that doing crazy algebraic stuff with types can actually throw up some surprising and useful results!
London Scala Users’ Group

Wednesday 16th April
Reddit experience (Laurence Dawson) and Azure/Cloud (David Douglas and Steve Plank from Microsoft)
This event will be open for RSVPs next week – Please check this link when available:
London Android LiveCode

Thursday 17th April
LJC Easter Un-Party!
Come one, come all and join us for the LJC Easter Un-Party. It will be on Thursday the 17th April at the Village Hall in Shoreditch. The refreshments are being sponsored by our good friends Atlassian.
This will be something a little different to our usual LJC events and will include a combination of open mic style presentations and games.
London Java Community

Thursday 17th April
Scala Coding Dojo
A regular coding dojo session run on every third Thursday of the month. The dojo is now held regularly at the central London offices of TIM Group.
London Scala Users’ Group

Tuesday 22nd April
What’s new in WildFly 8?
WildFly 8 (née JBoss Application Server) is Red Hat’s open source Java EE 7 compliant application server. It contains robust implementations of WebSocket, Batch, JSON, Concurrency, JMS2, JAX-RS 2, CDI 1.1, and all Java EE 7 technologies. Undertow is the new cutting-edge web server in WildFly 8 and is designed for maximum throughput and scalability, including environments with over a million connections. The number of ports is reduced used by multiplexing protocols over HTTP using HTTP Upgrade..
London Java Community

Thursday, 27th – Friday 28th November
µCon: The Microservices Conference
Want to learn how to manage and deploy architectures based on microservices? Eager to hear from those at the forefront of microservices? Then join us for the first ever µCon!
Tickets to this years conference are available at budget-friendly early bird rates!
Register now to book your place at the this year’s µCon : The Microservice conference:

Thats everything for now, If you’re interested in getting your group or event on the list then please contact me on for further assistance.



What is the LJC

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.