Our upcoming events


Our events are about learning. Recent meetups have varied from Java 8 with Oracle’s David Delabassee, Machine Learning with Google’s Melanie Warwick, Agile Coding with Venkat Subramaniam, Scala with Lightbend, and Kafka with Confluent’s Tim Berglund (Tim holds the record for most DubJUG appearances!).

Check out our upcoming speakers and presentations, or view past events.


Image SpeakerServerless Deep Dive with Bert Ertman
2018-04-24
Our April event welcomes fellow, and Director of Technology Outreach at Luminis, Bert Ertman. A frequent speaker on Java, Cloud, and software architecture all over the world, Bert is a book author, and serial conference organizer. Bert Ertman was awarded the coveted title of Java Champion in 2008, and is a JavaOne RockStar speaker and Duke’s Choice award winner. ##Bert is presenting.... # **Serverless Deep Dive** ##Doors Open 18:15 (evening session) . ##**Serverless Deep Dive** No server can be more easily managed than no server. Therefore: meet Serverless, a paradigm that truly approaches the Pay-as-You-Go philosophy once promised by the Cloud. In this deep dive I will explore the Serverless paradigm by diving into the Serverless manifesto first and by explaining the differences between Serverless, FaaS, and PaaS. Then we'll look at the different Cloud vendors and what they have to offer in the Serverless space. After the theoretical first part, I'll start developing some functions with AWS Lambda, since it is by far the easiest entry point into the world of Serverless. Then we take a step back and look at how existing architectures (ie modern web applications) will be impacted. Where does it actually make sense to use this kind of technology and where doesn't it. Finally I will end with a number of drawbacks to consider and to make it a balanced story of both pros and cons. Besides AWS Lambda, we'll look at alternatives like Apache OpenWhisk and recently announced Project Fn as well. This talk thoroughly explores Serverless, its impact on existing architectures, and assesses it's usability for Mobile Back-ends as a Service (MBaaS), Functions-as-a-Service (FaaS) and for Microservices hosted in the cloud. Internet connectivity permitting, there will be lots of demos too.. You can follow Bert on twitter at [**@BertErtman**](https://twitter.com/BertErtman), [**@Lumiis_EU**](https://twitter.com/Luminis_eu) ##**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. # **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's** 'crème de la crème' instructors deliver an enthusing and valuable learning experience, equipping attendees with the vital skills applicable to their careers, and bringing true business value to organisations they work with. Upcoming courses include CI with Jenkins, Apache Hadoop, Data Science & Big Data Analytics, Spring, GIT, Linux Foundation™, Angular 2, and OpenStack™ 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) . ##**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)

Image SpeakerClass Loaders, Spring and Java with Simon Maple
2018-03-22
Our March event is special! We are hosting Java Champion and JavaOne Rockstar, Simon Maple, Virtual JUG founder and London Java Community co-leader and RebelLabs author. Oh, and Duke’s Choice award winner! ##Simon is presenting.... # **Do You Really Get Class Loaders** ##and # **Productive and Effective Development with Spring and Java EE** ##Doors Open 18:15 (evening session) . Simon is an experienced speaker, having presented at JavaOne, JavaZone, Jfokus, DevoxxUK, DevoxxFR, JavaZone, JMaghreb and many more including many JUG tours. His passion is around user groups and communities. When not traveling, Simon enjoys spending quality time with his family, cooking and eating great food. You can follow him on twitter at [**@sjmaple**](https://twitter.com/sjmaple), [**@virtualjug**](https://twitter.com/virtualjug) and [**@zeroturnaround**](https://twitter.com/zeroturnaround) . ##**Do You Really Get Class Loaders** Class loaders are at the core of the Java language. Java EE containers, OSGi, NetBeans modules, Tapestry 5, Grails, and many others use class loaders heavily. Yet if something went wrong, would you know how to solve it? This session takes a tour of the Java class loading mechanism, from both the JVM and developer points of view. It looks at typical class loading problems and how to solve them. ClassNoDefError, IncompatibleClassChangeError, LinkageError, and many others are symptoms of specific things going wrong that you can usually find and fix. For each problem, the presentation goes through a hands-on demo with a corresponding solution. It also takes a look at how and why class loaders leak and how you can remedy that. ##**Productive and Effective Development with Spring and Java EE** This live coding session shines some light on a range of productivity tools that make software development a pleasure rather than a chore. Simon will live-code two applications. The first, a Java EE application with JBoss Forge that uses JPA, Bean Validation, REST, and Angular, is tested with Arquillian from within JBoss Forge. You’ll see how a Java EE microservice can be developed in Forge and run with JBoss Swarm. The second application is developed on Spring Boot, and you’ll see how to develop and run a Spring application with JRebel. You’ll learn how to write code productively with tools designed for developers. . ##**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. # **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's** 'crème de la crème' instructors deliver an enthusing and valuable learning experience, equipping attendees with the vital skills applicable to their careers, and bringing true business value to organisations they work with. Upcoming courses include CI with Jenkins, Apache Hadoop, Data Science & Big Data Analytics, Spring, GIT, Linux Foundation™, Angular 2, and OpenStack™ 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) . ##**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)

Image SpeakerMicroservices in Action at the Dutch National Police & Vert.x
2018-02-22
For our second DubJUG event of 2018, we're very honoured to have Java Champion, JavaOne Rock Star and leader of the NLJUG Bert Jan Schrijver come to Dublin to share his immense knowledge with our community. But this is not academica stuff! He will share **real-life** project cases discuss why and how the Dutch National Police force implemented Microservices, and why a startup uses the Vert.x event driven, non blocking and polyglot toolkit for building reactive applications. ##Bert Jan is presenting..... # **Microservices in Action at the Dutch National Police** ##and # **Building Microservices with Vert.x** ##Doors Open 18:15 (evening session) . . #**About Bert Jan Schrijver** Bert Jan is a software craftsman at Dutch software consultancy JPoint and CTO at OpenValue. He has a strong focus on Java, Continuous Delivery and DevOps. Bert Jan is a Java Champion, JavaOne Rock Star speaker and user group leader for NLJUG, the Dutch Java User Group. He loves to share his experience by speaking at conferences, writing for the Dutch Java magazine and helping out Devoxx4Kids with teaching kids how to code. Follow Bert Jan on twitter at [**@bjschrijver**](https://twitter.com/bjschrijver) . . # **Microservices in Action at the Dutch National Police** Microservices? At the Police? Definitely! At the Cloud, Big Data and Internet division of the Dutch National Police, 3 DevOps teams use the latest open source technology to build high tech web applications. These applications are used to support digital investigation and incident response with data from open, online sources and are built using Spring Boot, Angular 2.x, Spark, Kafka and Jenkins 2. In this session, Bert Jan will share their experiences and real-world use cases for microservices. He will explain the architecture, why it was chosen, which challenges were faced and how this brought the three teams together to work on one product, loosely based on the models used by Spotify and Netflix. Bert Jan will also share how the principles of DevOps and Continuous Delivery were applied, and how security, build pipelines, test automation, performance tests, automated deployments and monitoring were handled. You'll leave this session with an understanding of how this approach enabled the team to have the agility of a startup within the large Police organisation. . # **Building Microservices with Vert.x** Vert.x is a toolkit for building reactive applications on the JVM. It is event driven, non blocking and polyglot, which makes it an excellent platform for building microservices. It was awarded for 'Most Innovative Java Technology' at the JAX Innovation awards. In this talk, Bert Jan will share experiences and real-world use cases from a Dutch company that started building reactive web applications with Vert.x about 4 years ago. You'll learn the concepts behind Vert.x, why Vert.x was chosen, how it is being used and the challenges that were faced. Topics include the anatomy of the projects, (micro)services architecture, deployment model and DevOps, scalability, the upgrade from Vert.x 2 to Vert.x 3 and cooperation with the team behind Vert.x. At the end of this session, you'll know enough about Vert.x to get started yourself right away! . ##**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. On occasion, a small attendance fee may be required. The organisers reserve the right to cancel the booking if the attendee is not aligned to the intended audience. # **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's** 'crème de la crème' instructors deliver an enthusing and valuable learning experience, equipping attendees with the vital skills applicable to their careers, and bringing true business value to organisations they work with. Upcoming courses include CI with Jenkins, Apache Hadoop, Data Science & Big Data Analytics, Spring, GIT, Linux Foundation™, Angular 2, and OpenStack™ 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) . ##**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)

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