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  • Welcome to NEJUG

    The New England Java Users Group is open to everyone interested in Java and the JVM. Meetings are usually held on the second Thursday of each month. The meetings and membership are free. We do not hold meetings in July and December. The NEJUG was formed in November 1998. We currently have over 6000 members. Meeting space is limited and we must ask members to register in order to attend meetings. It is common for over 300 people to register for a single meeting! What better way to meet new people interested in Java, development, architecture, or just get your technical questions answered.

  • Want to help?

    NEJUG is a volunteer driven organization, we can always use help from our community members, we can use your help with organizing the monthly meetings, adding new features and maintaining the website etc.,

  • Upcoming Events
    • Register today for the 2018 New England Software Symposium returning Sept 28-30th to Framingham, MA

      The No Fluff Just Stuff Java Symposium Tour Series long considered the premier Java/JVM/Agility Event Series is returning to Boston this fall! Witness first hand the best a conference has to offer: exceptional speakers, content rich ninety (90) minute technical sessions, right sized event model (capped at 250 attendees) all experienced in a vendor free environment.  At a No Fluff Just Stuff event, the focus is entirely on the attendee experience and nothing else!

      **Local Venue, World Class Experience**


      Event Name: 2018 New England Software Symposium
      Dates: Sept 28-30th
      Location: Framingham, MA
      Venue: Sheraton Framingham
      URL: https://nofluffjuststuff.com/conference/boston/2018/09/home

       

      Make sure and use your special JUG discount of $50 by using the promo code nfjsusergroup50 when registering.
      If you are registering with a group, the highest discount will apply - group or JUG discount.

      REGISTRATION FEES:

      Early Bird Individual: $1025/person thru Sept 10th

      Excellent Group Discounts! Available - bring your entire development team to the show:

      5-9 Attendees: $900/person
      10-14 Attendees: $875/person
      15-24 Attendees: $850/person
      25-over Attendees: $825/person

       

      See you there!

       

      Jay Zimmerman

      2018 NFJS Tour Director

      jzimmerman@bigskytechnology.com

       

      • Annual NEJUG Holiday Party

        Attending: 4
        Thursday December, 13, 2018 12:00 AM

        76 Spots available

      The NEJUG Holiday Party is scheduled on our normal "second Thursday" in December, but it is not a normal presentation meeting. Instead, it's an "all fun time" event where we get to chat, eat, drink, and socialize.

      Stay tuned for more details -- cost, venue etc.

       

    Sponsors
    Recent Events
      • An Introduction to Domain Driven Design

        Attended: 172
        Thursday September, 13, 2018 06:00 PM

        0

      Today’s enterprise applications are complex, distributed and mission critical. In this session we want to share how the concepts, tools and patterns introduced by Domain Driven Design helped us in enterprise application architecture and design. DDD is invaluable in strategic architectural decision making. DDD was instrumental for us to layout our microservices architecture. We learned to speak DDD and adopted that as our medium of communication to build our team. DDD made our communication with outside teams and integration within the enterprise easier. It made us conscious about implications of enterprise integration at strategic and implementation level.

       

      This presentation will include concepts of strategic and tactical DDD. It is also organized in such a way to encourage discussion rather than follow a strict lecturing mode.

    • Michael Carducci is frequent speaker on a range of advanced topics in the modern application development space. With this NEJUG presentation , he draws on both his serious technical background, as well as his deep experience dealing with software culture. It's going to be a magical event!

      With such a strong set of available talks, it was difficult to choose just one - so we've decided to pick two topics that Michael is most passionate about: The Micronauts Framework, along with The Influential Engineer. 

      Micronaut is a modern, JVM-based, full-stack framework for building modular, easily testable microservice applications. In this session he'll give a solid overview of Micronaut - it's strengths, capabilities and best practices when building & testing services, functions and reactive apps. Even if you don't use Micronaut itself, you'll get a clear understanding about what's possible with a well engineered micro-service framework.

      Being The Influential Engineer is a dream of seasoned professionals, thumb-sucking nubies, and many in between. After pure technical competency, the most important set of skills we have are social. During this part of the meeting, Michael will share with us clear and simple techniques that we can use to effect culture change in our organizations, lead the transition toward a new technology, or simply ask for - and recieve - better tools. How awesome is that!?

       

      More information about these and his many other presentations is available at he No Fluff, Just Stuff web site, at his about the speaker page.

      • NEJUG Annual Business Meeting

        Attended: 20
        Thursday July, 12, 2018 06:00 PM
        Constant Contact Reservoir Place
        1601 Trapelo Road Waltham MA 021451
        0

      Every July, the NEJUG Production Team (formerly known as the NEJUG Advisory Group) gathers to discuss various business items. The meeting is open to all members, as usual, there will be food and drinks. Meeting format, however, will be different. There will be no external/guest speakers, rather, there will be roundtable discussions by NEJUG production team members.

      • K8s - Kubernetes

        Attended: 150
        Thursday June, 14, 2018 06:00 PM
        Constant Contact Reservoir Place
        1601 Trapelo Road Waltham MA 021451
        1

      So you have some code and it is in a bounded context with a REST API. You are on your way to Microservices. Next you wrap it in a container and now it is an image that others can run. Simple. Now what? No service is an island. Your service needs to log information, needs to scale and load balance between its clones. Your service needs environment and metadata way outside its context. What about where the service will run? Who starts it? What monitors its health? What about antifragility? Updates? Networking? Oh my.

      Services live in clusters and clusters live in data centers. There are hybrid solutions that span data centers. Many concepts overlap with the features of cloud management. But don't get too flustered since, fundamentally, services are managed by clusters. There are several approaches to cluster management such as Docker Swarm, Mesos with Marathon and Kubernetes.

      Minikube with Kubernetes is an approachable technique to set up a local cluster that is easy to understand and get started. Whether you have a simple service or a Web application with a set of services, you can develop much of it on Kubernetes with Minikube. We will run some practical examples. Once you understand the mechanics of the tools, we will explore how it works, sort through the terminology and share ideas about practical uses for this technology.

      Afterward you will understand how to run your personal cluster with your Linux, OS X or Windows laptop to further enjoy unravelling the mysteries of running applications in a cluster.

    • As Java developers, we have long understood the value of early feedback, unit testing, and Continuous Delivery (CD). As practitioners in a DevOps environment, we tell others how important these practices are. How well do we implement these practices for software intended for DevOps applications? Do we “eat our own dogfood”? In this presentation, I will review an approach taken to apply Continuous Delivery practices with a Java application that creates Jenkins Pipelines.   After hearing the presentation, I hope you will walk away with some ideas on how to implement your Java CD practices in a broader context. 

      Kotlin and Category Theory: Pragmatic Functional Programming 
      by Craig Lubin

      What is Functional Programming (FP) and why should you care? This presentation will provide a simple (but not simplistic) introduction of the science behind both Functional Programming and Category Theory by using simple mathematical concepts and the Kotlin programming language. I will show how to apply these techniques for error handling, IO, and more AND how these techniques can also work in Java (it's not just a "Kotlin thing").
      No prior knowledge of Kotlin or advanced mathematics is required. 

       

       

      • Refactoring Existing Java Code


        Thursday April, 12, 2018 06:00 PM
        Constant Contact Reservoir Place
        1601 Trapelo Road Waltham MA 021451
        2

      When should you refactor code and when should you not do it?  How do you make sure you have adequate test case coverage?  What are the strategies, techniques, and patterns for refactoring existing code?  And how do you get your boss to agree to let you spend the time to refactor code?  This presentation will cover these questions and more.  Topics covered include Acceptance/Approval Testing, Design Patterns, Code Smells, Refactorings, and Tools.

       

      For a deeper dive into related topics of Mob Programming, TDD, and software craftsmanship, join Ethan at the Mob Programming Conference April 12-13 in Burlington, MA.  Several of the presentations are on refactoring.

       

  • NEJUG Calendar


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    What is NEJUG Lightning Talk?

    Presentation videos


    Algebraic Databases from Nejug Video on Vimeo.


    Debugging Backwards in Time from Nejug Video on Vimeo.


    Essential Spring Boot from Nejug Video on Vimeo.


    Love your Architecture, Or, How to Organize Your Code from Nejug Video on Vimeo.

    Want to present a short talk?

    Lightning Talks are short 10-15 minutes presentation on any subject matter, this mainly to encourage our NEJUG members to engage, develop and improve presentation skills.


    Help us choose the next subject

    We strive to bring presentations that are interesting and trending, but we would also like to hear from our community members about what subject matters they are interested in. Please let us know about your topic suggestions.