Codetown
Codetown ::: a software developer's community
OrlandoJUG Town
Information
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: 96
Latest Activity: Feb 23, 2021
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
Meet with a Superb Recruiter 1 Reply
Started by Michael Levin. Last reply by Andrew DiRocco Feb 23, 2021.
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, 2020.
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, 2020.
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, 2020.
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.
OJUG ::: Git with Rusty 8/22
Join us for a Git presentation…Continue
Tags: git, rusty, codetown, orlandojug
Started by Michael Levin Aug 7, 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
Started by Michael Levin Aug 5, 2019.
OrlandoJUG Reading List ::: from JavaSpecialists
Issue 323 - Visiting All Threads (Including Virtual)
In this newsletter, we explore how we can visit the entire hierarchy of threads in our virtual machine, including virtual threads. We do this using the composite, visitor and facade design patterns.Issue 322 - Throwing InterruptedException Early
The LinkedBlockingQueue and LinkedBlockingDeque behave slightly differently when methods put() and take() are called by a thread that happens to be in the "interrupted" state. The LBQ throws an InterruptedException immediately when we call take(), even if the queue contains elements. The LBD, however, only throws InterruptedException if the deque is empty and the thread would enter the WAITING state. In this newsletter we show how a dynamic proxy can make the behaviour consistent.Issue 321 - StampedLock ReadWriteLock Dangers
ReentrantReadWriteLock has a limit of 65536 concurrent read locks. That is an unattainable number with platform threads, but definitely achievable with virtual threads. In this newsletter we explore some of the issues if we want to switch to the StampedLock.asReadWriteLock() instead.Issue 320 - Please Don't Yield A Lot
Java's Thread.yield() traditionally would cause a voluntary context switch. However, with virtual threads, it causes the thread to be unmounted from its carrier thread. This can greatly increase the user and system time for ALL the carrier threads. And there is no way to turn it off. Keep an eye out for yield in your thread dumps.Issue 319 - ArrayBlockingQueue: Weakly Consistent Iteration Powered by Weak References
Like many other concurrent collections, the ArrayBlockingQueue sports a weakly-consistent iterator. However, the ArrayBlockingQueue always has a maximum capacity, the length of the underlying array. In this newsletter we explore what happens to pending iterators when we wrap around the circular array.Comment Wall
Comment
-
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.
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.
Created by Michael Levin Dec 18, 2008 at 6:56pm. Last updated by Michael Levin May 4, 2018.
Looking for Jobs or Staff?
Check out the Codetown Jobs group.
InfoQ Reading List
Docker Bridges Agents and Containers with New MCP Catalog and Toolkit
Docker has announced two new AI-focused tools—the Docker MCP Catalog and the Docker MCP Toolkit—to bring container-grade security and developer-friendly workflows to agentic applications, helping build a developer-centric ecosystem for Model Context Protocol (MCP) tools.
By Sergio De SimoneGoogle's Gemma 3 QAT Language Models Can Run Locally on Consumer-Grade GPUs
Google released the Gemma 3 QAT family, quantized versions of their open-weight Gemma 3 language models. The models use Quantization-Aware Training (QAT) to maintain high accuracy when the weights are quantized from 16 to 4 bits.
By Anthony AlfordGitHub Announces Public Preview of GitHub MCP Server
GitHub recently announced the official release of its Model Context Protocol (MCP) server, which is in public preview as of April 4th, 2025. Engineers can integrate with GitHub APIs using this open-source server, enabling automation and AI-powered interactions with the GitHub ecosystem.
By Aditya KulkarniPresentation: A Game of Patterns
Tiani Jones explains how recognizing organizational behaviors and their resulting patterns can reveal opportunities for improvement and lead to better performance. Using examples like chess and a cyber-physical team, she shares practical insights on identifying anti-patterns and fostering generative cultures through mindful adjustments to constraints and practices in software development.
By Tiani JonesGoogle DeepMind Shares Approach to AGI Safety and Security
Google DeepMind has released a new paper outlining its approach to safety and security in the development of artificial general intelligence (AGI). AGI refers to AI systems that are as capable as humans at most cognitive tasks.
By Daniel DominguezSwitch to the Mobile Optimized View
© 2025 Created by Michael Levin.
Powered by
You need to be a member of OrlandoJUG Town to add comments!