Welcome to the Dublin Java User Group!


The Dublin Java User Group (aka DubJUG) is a community of software developers who use languages for the JVM in their professional lives.

We strive to fill the void of Java learning in Ireland. Our monthly events enable our members to hear how new technology is being built and applied in companies across the world, and to learn best practice from the international Java experts (the ones that your boss won’t pay for you to meet at European and Worldwide conferences!).

DubJUG also enables our members to meet and develop their local network of Java developers.


Next Event

Image SpeakervJUG - A​ ​Craftsman’s​ ​Guide​ ​to​ ​Designing​ ​a​ ​Clean Architecture
2018-04-19
Welcome to the a Virtual Java User Group screening at the Dublin Java User Group ##Marcus Biel # **A​ ​Craftsman’s​ ​Guide​ ​to​ ​Designing​ ​a​ ​Clean Architecture** ##Doors Open 16:30 for 17:00 start. . In 2018, it seems like Microservices are the de facto standard for a system architecture, but do they really live up to the hype? The talk will show you an alternative approach - how we can tame complexity with the help of a clean, monolithic architecture that is modular to the core. Java has been deliberately built from the ground up on a modular basis: Methods, classes, packages. Additionally, the module system was introduced in Java 9. Modularity is based on the fundamental concepts of high cohesion and low coupling. We will look at these concepts, as well as some further measures, in detail. We'll check out what they are, how they are related to one another, and what the best practices are for applying them on all levels of the architecture. The talk will show you how you can apply these basic concepts to develop a clean, monolithic architecture, based on Java 9 modules and the hexagonal architecture pattern. Finally, we'll learn how to achieve a clean microservice architecture based on a modular architecture. About Marcus Biel Marcus is a Clean Code evangelist who has authored a series of video tutorials that focus on teaching others how to create the cleanest and most well-structured code possible. As a conference speaker, he shares his ideas on Java Clean Code development. Marcus is also an author, technical book reviewer and JCP member. In 2017, Marcus was named TOP 13 Java influencer worldwide by jaxenter.com (http://bit.ly/top20JavaInfluencers). On his website Clean Code Academy, he offers comprehensive online training for Java Clean Coding (https://join.cleancodeacademy.com/). You can follow Marcus on twitter at [**@MarcusBiel**](https://twitter.com/marcusbiel) # **The Dublin Java User Group - Sponsor Messages** **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?**](https://recruit.zoho.com/recruit/ViewJob.na?digest=7NZDPrAwelZRR7pgbV1JQlg7fAI9NqhUofQ6ctM2P.8-&embedsource=Embed) Website: [**Stackand.Co**](http://stackand.co) / Twitter: [**StackanddotCo**](https://twitter.com/stackanddotco) . **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. New courses for 2018 include Blockchain with Ethereum / Corda (presented by Ben Evans), Machine Learning for Java and Python developers, IoT, GDPR, Hands-on Web Security for Java Developers as well as Modern Security with Ben Evans, Angular 5 and more Website: [**GuruTeamIrl.com**](http://guruteamirl.com) / Twitter: [**GuruTeamIreland**](https://twitter.com/guruteamireland) . **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**](https://equifax.com) / Twitter: [**Equifax**](https://twitter.com/equifax) . **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**](https://version1.com) / Twitter: [**Version1Tweets**](https://twitter.com/Version1Tweets) . **Teckro** are rethinking every element of clinical research - the people, the processes, the technologies used. By making it possible for all relevant information to be instantly accessible to every active member of a clinical trial and for the entire study teams to be connected effortlessly, they are broadening the possibilities of what can be achieved. This means drugs and treatments for the world’s most complex diseases are being developed quicker, and Teckro's long-term goal of continuously improving healthcare for everyone is realised. Teckro's partnership with DubJUG means that they can interact and exchange ideas with some of Dublin’s best developers. Website: [**Teckro.com**](http://Teckro.com) / Twitter: [**TeckroOfficial**](https://twitter.com/teckroofficial?lang=en) . **Sonorplex** add the edge to event attendance with their innovative 'Mark and Review' video platform. Download the Sonorplex app on your smartphone, attend DubJUG, and click points of interest in realtime. Your own personal 'marked' copy will be available for reviewing within hours, allowing you to relive the presentations again and again! Website: [**Sonorplex.com**](https://sonorplex.com) / Twitter: [**Sonorplex**](https://twitter.com/sonorplex) . **tcube** provides city-centre co-working / hotdesks and fully serviced office space for ICT professionals and companies specifically. Their community knits so well together remote workers, contractors, city visitors and entrepreneurs / startups immediately become a part of a network of like-minded people who are able and willing to help one another. Offices in Fleet Street, Trinity Street and Grafton Street provide great locations with a huge benefit when it comes to hiring and retaining millennials. Website: [**tcubedublin.com**](https://tcubedublin.com) / Twitter: [**tcubeDublin**]( https://twitter.com/tcubedublin) . ##**REGISTRATION NOTES** The Dublin Java User Group meetups are designed to enhance the knowledge of developers and technology professionals. Due to the overwhelming demand to attend our events they are always full so make sure you're subscribed to the wait-list to get the release notification of this and future Dublin Java User Group events. Better still, email Team@DubJUG..org and we'll tell you how to become a coveted platinum member of the Ireland's longest running and most respected Java User Group. We reserve the right to cancel bookings if the attendee is not aligned to the intended audience. No refunds for cancellations, no-shows or misalignments. ##**MORE DUBLIN JAVA USER GROUP EVENTS** **Java developers who are interested in this meetup are also attending other Dublin Java User Group meetups - check them at** [**DubJUG.org**](http://dubjug.org)

Past Event

Image SpeakerStarting out with JUnit 5
2018-04-11
. **On the evening of 11th April, DubJUG co-lead Barry Evans is running a workshop built upon a session he attended at JavaOne ......** ##Barry is presenting.... # **Starting Out with JUnit 5** ##Doors Open 18:15 (evening session) . Barry's workshop builds upon a JavaOne session he attended that was run by Jeanne Boyarsky, author of the official Oracle OCA/OCP study guides. The difference between JUnit 4 and 5 is far bigger than the difference between 3 and 4. [**JUnit 5 was released**](https://junit.org/junit5/docs/5.0.0/user-guide/#release-notes-5.0.0) on 10th September 2017, so it is high time to learn about next-generation JUnit. Attendees in this session will migrate a JUnit 4 application to JUnit 5, while learning what’s changed and the new styles of unit testing that JUnit 5 enables. **NOTE: THIS IS A BRING YOUR OWN LAPTOP HANDS-ON LAB.** . **About Barry** Barry is a seasoned web application engineer with over ten years experience developing enterprise applications in the financial sector. Presently, he is an Oracle Certified Senior Applications Consultant at DubJUG partner Version 1. Barry is interested in meeting other JUG leaders, finding out what brings Java developers together, and to help the Dublin JUG in Ireland grow by getting involved with the global Java community. You can follow him on twitter at [**@Bazza_NI**](https://twitter.com/bazza_ni) # **The Dublin Java User Group - Sponsor Messages** **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?**](https://recruit.zoho.com/recruit/ViewJob.na?digest=7NZDPrAwelZRR7pgbV1JQlg7fAI9NqhUofQ6ctM2P.8-&embedsource=Embed) Website: [**Stackand.Co**](http://stackand.co) / Twitter: [**StackanddotCo**](https://twitter.com/stackanddotco) . **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**](https://equifax.com) / Twitter: [**Equifax**](https://twitter.com/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. New courses for 2018 include Blockchain with Ethereum / Corda (presented by Ben Evans), Machine Learning for Java and Python developers, IoT, GDPR, Hands-on Web Security for Java Developers as well as Modern Security with Ben Evans, Angular 5 and more Website: [**GuruTeamIrl.com**](http://guruteamirl.com) / Twitter: [**GuruTeamIreland**](https://twitter.com/guruteamireland) . **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**](https://version1.com) / Twitter: [**Version1Tweets**](https://twitter.com/Version1Tweets) . **Teckro** are rethinking every element of clinical research - the people, the processes, the technologies used. By making it possible for all relevant information to be instantly accessible to every active member of a clinical trial and for the entire study teams to be connected effortlessly, they are broadening the possibilities of what can be achieved. This means drugs and treatments for the world’s most complex diseases are being developed quicker, and Teckro's long-term goal of continuously improving healthcare for everyone is realised. Teckro's partnership with DubJUG means that they can interact and exchange ideas with some of Dublin’s best developers. Website: [**Teckro.com**](http://Teckro.com) / Twitter: [**TeckroOfficial**](https://twitter.com/teckroofficial?lang=en) . **Sonorplex** add the edge to event attendance with their innovative 'Mark and Review' video platform. Download the Sonorplex app on your smartphone, attend DubJUG, and click points of interest in realtime. Your own personal 'marked' copy will be available for reviewing within hours, allowing you to relive the presentations again and again! Website: [**Sonorplex.com**](https://sonorplex.com) / Twitter: [**Sonorplex**](https://twitter.com/sonorplex) . **tcube** provides city-centre co-working / hotdesks and fully serviced office space for ICT professionals and companies specifically. Their community knits so well together remote workers, contractors, city visitors and entrepreneurs / startups immediately become a part of a network of like-minded people who are able and willing to help one another. Offices in Fleet Street, Trinity Street and Grafton Street provide great locations with a huge benefit when it comes to hiring and retaining millennials. Website: [**tcubedublin.com**](https://tcubedublin.com) / Twitter: [**tcubeDublin**]( https://twitter.com/tcubedublin) . ##**REGISTRATION NOTES** The Dublin Java User Group meetups are designed to enhance the knowledge of developers and technology professionals. Due to the overwhelming demand to attend our events they are always full so make sure you're subscribed to the wait-list to get the release notification of this and future Dublin Java User Group events. Better still, email Team@DubJUG..org and we'll tell you how to become a coveted platinum member of the Ireland's longest running and most respected Java User Group. We reserve the right to cancel bookings if the attendee is not aligned to the intended audience. No refunds for cancellations, no-shows or misalignments. ##**MORE DUBLIN JAVA USER GROUP EVENTS** **Java developers who are interested in this meetup are also attending other Dublin Java User Group meetups - check them at** [**DubJUG.org**](http://dubjug.org) [**SORRY EVENT FINISHED - CLICK HERE TO VIEW UPCOMING JAVA EVENTS**](https://ti.to/dublin-java-user-group/)



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