Information

OrlandoJUG Town

Calling all Java lovers! The OrlandoJUG features leading edge presentations with you in mind. We meet every month with talks on interesting aspects of programming in Java. Although we're Java-focused, you'll also learn about other JVM languages.

Twitter & Facebook @orlandojug

 

Check the Codetown Events section for specifics about meetings.

Website: http://www.orlandojug.org
Location: Orlando, FL
Members: 95
Latest Activity: Jul 2

About the OrlandoJUG

Check the Codetown Events section for meeting info. Please RSVP!

* There are no membership fees for joining the Club or participating as a member. Operating costs will be borne by Contributing Sponsor companies (Contributing Sponsors).
* However, membership is not "free" because everyone is asked to contribute time and talent for the benefit of all members. Please volunteer to serve on the committee of your choice.
* The membership list and contact information will not be for public use. Telephone numbers and e-mail addresses will be held in strict confidence. Members are, of course, free to trade contact information one-on-one.
* As a general rule, meetings are held monthly, usually on the 4th Thursday of the month.
* Michael Levin is the JUG chair. Anyone wishing to provide a venue, refreshments or a program speaker/topic should contact him at info (at) orlandojug (dot) org
* There is an open-door policy. All committee and planning meetings are open to all members.
* Constructive criticism and good ideas are invited. We will strive to improve OrlandoJUG on a constant, consistent basis. Your active involvement and support is vitally important to the success of the Club

Our meetings will be listed in the Events section.

Discussion Forum

J4K is virtual this year!

‪J4K was a superb conference last year. This year, it’s virtual and free! Some of the world’s best speakers will present. Register here: http://j4k.io/ They say tickets…Continue

Started by Michael Levin Jul 2.

Virtual Events

‪Hello! I hope you all are well. I’m staying home for a while, but the Virtual Java User Group and JaxJUG have interesting online events coming up this week. Stay tuned. ...Mike‬

Started by Michael Levin May 11.

February Meetup! 3 Replies

We have an awesome speaker lined up this Th. Interested? You have to tell me you’re interested or I won’t schedule it. Venue near Ace Cafe!Continue

Started by Michael Levin. Last reply by Naomi Butterfield Feb 27.

October OJUG

Folks, I’m giving a talk on AI at Devoxx next month in Morocco. Our scheduled Spring talk is postponed. Let me know if you’d like a preview of my AI talk instead. We don’t meet Nov/Dec. Here’s the…Continue

Started by Michael Levin Oct 18, 2019.

Live OrlandoJUG broadcast tonight

Tonight’s Orlandojug will be broadcast live! Monitor @OrlandoJUG on…Continue

Started by Michael Levin Sep 27, 2019.

September OJUG

Join me at OJUG ::: featuring Bruno Souza & Otavio Santana from Brazil! http://meetu.ps/e/H1Rlw/1sqG/aContinue

Tags: Ojug

Started by Michael Levin Sep 17, 2019.

Red Hat Open Shift Workshop 8/21 Orlando Marriott

Hi Michael,Wanted to send you a reminder for next Wednesday's Red Hat OpenShift workshop. We are excited to see you! Date: August 21st, 2019Time: 9am-2pmLocation: Marriott Orlando Downtown (…Continue

Tags: OrlandoJUG, codetown, Redhat

Started by Michael Levin Aug 15, 2019.

DevNexus CFP open until Aug 15

THE DEVNEXUS CALL FOR PAPERS IS OPEN UNTIL AUGUST 15!!! The Call for Papers (CFP) for Devnexus 2020 is now open. Devnexus, …Continue

Tags: codetown, Devnexus

Started by Michael Levin Aug 5, 2019.

OrlandoJUG ::: Reactive Spring 1 Reply

Join us for a Reactive Spring talk featuring Miguel Mendez.Miguel Mendez…Continue

Tags: Mendez, Spring, Reactive, OrlandoJUG

Started by Michael Levin. Last reply by Michael Levin Jul 26, 2019.

OrlandoJUG Reading List ::: from JavaSpecialists

Issue 285 - I/O Stream Memory Overhead

Each PrintStream uses about 25kb of memory. This might seem reasonable if we only have System.out and System.err. But what happens if we try create millions? And why do they use so much memory?

Issue 284 - java.util.PrimitiveIterator.OfInt

Java 8 Streams were the first time that Java deliberately split utility classes into multiple versions to be used for Object, int, long and double. This design was also applied to Iterator, which now has specialized types for these primites in the form of the PrimitiveIterator. In this newsletter we have a look at how we can use that in our own primitive collections.

Issue 283 - Four Billion Changes

A nice puzzle to brighten your day - how can we make the Iterator think that the List has not been changed?

Issue 282 - Biased locking a goner, but better things Loom ahead

Biased locking has made unnecessary mutexes cheap for over a decade. However, it is disabled by default in Java 15, slated for removal. From Java 15 onwards we should be more diligent to avoid synchronized in places where we do not need it.

Issue 281 - Puzzle 2: Is it garbage?

In our next puzzle, we up the ante a bit. We prevent GC during the test() method by storing a strong reference to all our Vectors. Cock and bull story, or are we struggling to identity our biases?

Comment Wall

Comment

You need to be a member of OrlandoJUG Town to add comments!

Comment by Michael Levin on July 17, 2018 at 1:56pm

OrlandoJUG meets every 4th Thursday from 6-8PM. Details about our next meeting are here: http://www.codetown.com/events

Please RSVP so we’ll know how much pizza to order. 

If you want to get email about meetings, join this group. 

 

Members (95)

 
 
 

Happy 10th year, JCertif!

Notes

Welcome to Codetown!

Codetown is a social network. It's got blogs, forums, groups, personal pages and more! You might think of Codetown as a funky camper van with lots of compartments for your stuff and a great multimedia system, too! Best of all, Codetown has room for all of your friends.

When you create a profile for yourself you get a personal page automatically. That's where you can be creative and do your own thing. People who want to get to know you will click on your name or picture and…
Continue

Created by Michael Levin Dec 18, 2008 at 6:56pm. Last updated by Michael Levin May 4, 2018.

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InfoQ Reading List

Microsoft Edge Made Available on Linux

Microsoft recently announced the availability of the Microsoft Edge Dev Channel for Linux (initial preview release). The Edge browser is now available on all major operating systems, desktop and mobile. Enterprise developers, many of which use Linux, may now build and test web applications in their preferred platform. The move seeks to further position Edge as the browser for business.

By Bruno Couriol

Presentation: Automating Chaos Attacks

Daniel Albuquerque, Nikos Katirtzis show how to run attacks in both manual and automated ways.

By Daniel Albuquerque, Nikos Katirtzis

Presentation: Chaos Engineering: The Path to Reliability

Kolton Andrus shares examples of what works, what doesn’t, and what the future holds in using Chaos Engineering to build reliability in a system.

By Kolton Andrus

Article: Building a Self-Service Cloud Services Brokerage at Scale

While not suitable for everyone, cloud brokerages are useful for large enterprises that want to improve their cloud management and operations. The article looks at planning and delivering a brokerage.

By Will Kelly

Using Agile with a Data Science Team

Agile helped a data science team to better collaborate with their stakeholders and increase their productivity. As priorities became clear, the team was able to focus and deliver. Buy-in of the data science team by taking them through a journey of agile was crucial to making it work.

By Ben Linders

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