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Maintainable Java and Spring Insight

We are pleased to announce that we have a new location for DJUG. SendGrid has graciously opened their doors to us in their Larimer Square office (1451 Larimer St). The entrance to their office is between The Market at Larimer Square and Ocean Prime.


5:30-6:00: Networking and Food

Food, Soda, Beer and Networking. We are grateful to Cody Powell from TEksystems for their continued sponsorship of the Food and Soda! Also, thanks to Mike Henninger of BWBacon for supplying the beer.

6:00-6:10: Announcements

6:10-6:55: Spring Insight, What Just happened? by Derek Beauregard

Spring Insight answers the question "What just happened?" (in my web application). It is a free SpringSource Web application that gives you real-time visibility into application behavior and performance.
In development and testing stages, developers can use Spring Insight to verify immediately whether their newly-written code is behaving as designed. QA engineers can pinpoint specific causes for "what just happened" and relay detailed information to developers.
Stress testing an application typically tells you which URL areas are slow. By combining Spring Insight with your existing tools (such as JMeter), you can see not only which URLs are slow, but why, thus accelerating your time to production.
All of this is done through automatic, no configuration and zero coding, code introspection that works with the Spring Framework, Spring MVC, JPA, Hibernate and more.  And its extensible, so you can build your own adaptors for your technology.

About Derek Beauregard:

Derek Beauregard is a technologist at heart with over 10 years experience in the industry.  He is currently working as a Sales Engineer in the vFabric (Spring Source) division of VMware.  Prior to this role he was a consultant in the vFabric PSO organization designing and implementing vFabric/Spring based solutions for VMware’s customers across multiple verticals.  His work has concentrated lately on Application Modernization, Platform as a Service (PaaS), and Big/Fast/Flexible data.  Derek is based out of Denver, CO.


6:55-7:15: Break

7:15-8:30: Maintainable Java by Robert Simmons Jr.

Robert Simmons Jr. will present some tips and techniques for writing more maintainable Java code from his second (and recently released) book "Maintainable Java." Maintainable Java is a book that is targeted specifically at the professional developer and introduces over 100 tips for making Java code, even old legacy code, more maintainable. These techniques are applicable to all types of Java development from Android mobile apps to three tier multimillion dollar software systems. All attendees will leave with a better understanding of the Java language and how to make their lives easier.

About Robert Simmons Jr.:

Robert has been working with Java since 1996, wrote his master's dissertation on the structure of the Java language. Recently Robert worked with Samsung international developing the Bluetooth LE API for the new Samsung Galaxy phones.


8:30: Door prizes:

Amazon Gift Cards - provided by Lea Holmboe of ECS

JetBrains IDE License

ZeroTurnaround JRebel License

A couple O'Reilly and Pearson books

8:45: Networking/Food/Drinks at Old Chicago.

Our new sponsor,, will be hosting the food and drinks at Old Chicago (1415 Market St).  Come join us for further discussion on topic of the night and whatnot.

Join or login to comment.

  • Travis N.

    Slides for both talks have been posted to

    April 23, 2013

  • Michael B.

    Good speakers. Identical hair.

    April 12, 2013

  • Steven Van W.

    Great topics and well articulated speakers. I appreciated a demo instead of flat slides for the Spring Insight talk and Robert's "pop quizzes" made me smile.

    April 11, 2013

  • Suren R.

    Sorry, can't make this meeting

    April 10, 2013

  • Tom K.

    Sorry I cannot make it, out of town

    April 9, 2013

  • David K

    Since nobody has asked yet... Still having this blizzard or not? ;)

    April 8, 2013

  • herc

    love know more about anything especially Java and spring. Thanks for the opportunity

    April 8, 2013

  • Alex W.

    RTD, Ecopass... priceless.

    April 8, 2013

  • Jeff S.

    Don't come downtown all that often, but there was a convenient garage near near the old DJUG location. Any suggestions for SendGrid? It would be nice to not have to run to the street and feed a meter if possible.



    1 · April 6, 2013

    • Zettie C.

      There are a couple of parking garages on Lawrence St. between 15th & 16th streets - Writers Square parking with entrance on the left hand side of Lawrence & a Public parking garage with entrance on the right. The Tabor Center garage is also nearby between 16th & 17th streets with entrances on both Larimer(left) & Lawrence (left). Blake St. also has a garage between 15th & 16th streets, entrance on right.

      April 7, 2013

    • Jeff S.

      Wow, great information. Thanks Zettie.

      April 8, 2013

  • Michael J

    Want to be a better Java programmer? Then, DO NOT MISS THIS MEETING! I attended Robert Simmons Jr's presentation on Maintainable Java a few weeks ago at the Denver Droids group in the Tech Center. He introduced tip after tip that has already made me a better Java programmer. Also, I was one of the lucky ones to win his book as a door prize -- it's great! He takes for granted that you already know how to program in Java and focuses on helping you program even better.

    1 · April 5, 2013

  • Brian S.

    Unfortunately I will be out of town

    April 3, 2013

  • Hatem

    That sounds like fun.

    March 29, 2013

  • A former member
    A former member

    I will be presenting.

    1 · March 19, 2013

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