Our new meeting location:
5 Wayside Rd Burlington MA 01803  

  • 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
      • Polyglot Java EE on the GraalVM

        Attending: 40
        Thursday August, 29, 2019 06:00 PM
        Jobcase Inc.,
        201 Broadway Cambridge MA 02139
        60 Spots available

      The new GraalVM from Oracle supports multiple languages including JavaScript, Python, Ruby, R, C++ as well as Java and other JVM languages. This opens up interesting possibilities for polyglot enterprise applications. Now you can use a Node library in a Java application or call an R statistical function from an EJB. Previously, this type of integration was extremely challenging. This session will provide recipes to get up and running along with best practices and some cool demos.

      We would like to thank our event host https://www.jobcase.com for all the support for making this event possible in Cambridge.

      • The venue will open at 5:30 PM for networking, so come early and meet everyone else. 
      • Pizza, drinks sponsored by Jobcase --- there will be some Gluten-free items as well.

       

       

       

      • New England Software Symposium - Fall 2019


        Friday September, 27, 2019 09:00 AM
        Sheraton Framingham
        1657 Worcester Rd Framingham MA 01701

      The No Fluff Just Stuff Java Symposium Tour Series, long considered the definitive conference series for software developers & architects, returns 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!

      **Fifty (50) plus new sessions for 2019 to choose from! **


      Event Name: 2019 New England Software Symposium
      Dates: Sept 27-29th
      Location: Framingham, MA
      Venue: Sheraton Framingham
      URL: https://nofluffjuststuff.com/boston

       

      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: $1050/person thru August 26th

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


      5-9 Attendees: $950/person
      10-14 Attendees: $925/person
      15-24 Attendees: $900/person
      25-over Attendees: $875/person

      What's Included - Registration Fee:

      • Three Day All Access Pass
      • Dinner & PM Breaks on Friday & Breakfast/Lunch & Breaks on Saturday/Sunday
      • NFJS Laptop Bag & T-shirt
      • Online Audio Recording of Available Sessions

       

      Questions:  Email me - jzimmerman@bigskytechnology.com


       

      See you there,

      Jay Zimmerman
      2019 NFJS Symposium Tour Series Director
      jzimmerman@nofluffjuststuff.com

       

    Sponsors
    Recent Events
      • Kotlin: Beyond the Basics

        Attended: 154
        Thursday August, 08, 2019 06:00 PM
        Microsoft
        5 Wayside Rd Burlington MA 01803
        1

      This talk will examine features of Kotlin at a greater depth than most tutorials. Higher order functions will be covered, as well as reduction operations like reduce and fold, and lambdas with receivers. Those topics progress toward building DSLs and builders in Kotlin. Terms like “apply”, “let”, “use”, “also”, and “with” will be covered along with their typical use cases. Finally, an introduction to Kotlin coroutines will be included.

      Details of the type system, including the Any, Unit, and Nothing classes, will be covered. Examples will be provided on how to define extension functions, infix operators, and inlining functions for efficiency.

    • Java is a language in evolution. There are a handful of language changes in Java 9 and 10 plus several JDK changes in 9, 10, 11, and 12. Some of these changes are significant in that they allow us to do things more effectively than before. The difference can be anywhere from reducing code to avoiding errors that come from verbosity. In this presentation we will explore the language changes first. Then we will visit the additions to the JDK. Along the way we will also look at a few things that have been removed from Java as well.

    • You’ve probably heard of MicroProfile, but how do you go from buzz to production? In this code-heavy, interactive presentation, we’ll describe how to use OpenTracing (http://opentracing.io/) with Jaeger (https://www.jaegertracing.io/)  and annotations in MicroProfile and other Microservice architectures to reliably improve and deploy updated versions your applications to OpenShift and Kubernetes in the cloud.  Topics include best practices for performance analysis, maintaining delivery pipelines using the Linux command line, plus tips on the best free OpenTracing tools and SDKs available on GitHub.

       

      NOTE: This meeting is NOT on our normal "second-Thursday" schedule.

       

    • The popularity of Amazon's Alexa and Google Home has been inspiring both developers and businesses to think about Voice computing. From a banking assistant on your phone to grocery shopping on your TV - it is truly exciting to see how Voice Interfaces could be used. The challenge, however, is that most Voice Apps are fairly limited in what they can do.

      In this talk, Vineet shares experiences from prototyping and building over a dozen Voice Apps. He shows how practical decisions can make implementing great apps easy, reviews existing tools that have been built and talks about Violet (http://helloviolet.ai/) an Open-Source Voice App Framework designed to help developers create Voice Apps. Violet uses an approach inspired by Angular and React to simplify the complexity needed when manually building using other lower-level frameworks, while providing for more flexibility than the drag-and-drop non-technical tools on the market.

    • Learning a new programming language doesn’t have to be hard. Sure, there’s a lot of new stuff to wrap your head around: syntax, keywords and symbols, conventions, how to define variables and methods, arrays, and the list go on and on! But what if there were a technique and toolkit you could use to master a new language fast?

      In this session, Richard Kasperowski introduces mob programming and code koans. Mobbing is about getting all the best minds working on the same computer at the same time. Code koans are a series of micro-puzzles that teach you the new language in little chunks, using test-driven development. We’ll mob together on a set of code koans to learn a new language. Even better, we’ll decide on the language together! Current choices include C++, Java, JavaScript, Python, and Ruby.

      Who should attend? Anyone who wants to learn about mob programming and how to learn a new language.

       

      We would like to thank our event host Chewy.com for all the support for making this event possible in Downtown Boston. 

       

      • The venue will open at 5:30 PM for networking, so come early and meet everyone else. 
      • Pizza, drinks (including beer!)  sponsored by Chewy --- there will be some Gluten free pizza as well.
      • There will be a 15 minutes Lighting Talk at 6:00 by Marco Ferrer, Software Engineer at Chewy.

       

      If you have any questions, feel free contact Mahesh Acharya (Nejug Event Coordinator) at 617 767 Three One Seven One.

      We would like to thank the following volunteers:

      Photography: George Yazbeck

      Videography:  Francis Solis Olivares

       

       

    • Resilient architecture is crucial for all cloud implementations. In this talk, we explore different design patterns to make a distributed application more resilient. 

      As part of this journey, for any process, we need to ask what if something goes wrong? Then, plan a course of action to the process auto heal without any human intervention and how to lower risks by performing canary deployments. Design starts with at first understanding of requirements and performing empathy map and value chain analysis. 

      Thinking application as stateless for all the API calls makes the system available most of the time requires creating a cache for common distributed data. Next, we examine how to deal with cascading failures, and timeouts scenarios.  Applications, as part of auto-healing, need to Detect, Prevent, Recover, Mitigate, Complement so that the service is resilient. 

      Key takeaways for the audience are as follows:

      • Resiliency is essential for any feature in cloud
      • Understanding the value chain is critical to identify failure points
      • Challenges come in identifying if there is a failure and design the system for auto healing
      • Focus should be first to prevent a failure to occur. 
      • Identifying key challenges in your company and tools and techniques to auto-heal and provide a sustainable solution
  • NEJUG Calendar


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    Meeting location


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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.