You can now download the source code that sparked the AI boom
Learning about artificial intelligence? You may find this interesting.https://arstechnica.com/ai/2025/03/you-can-now-download-the-source-code-that-sparked-the-ai-boom/See More
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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.Birthdays
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You can now download the source code that sparked the AI boom
Posted by Michael Levin on March 25, 2025 at 4:30am 0 Comments 0 Likes
Learning about artificial intelligence? You may find this interesting.
https://arstechnica.com/ai/2025/03/you-can-now-download-the-source-code-that-sparked-the-ai-boom/
50% Keyboard Guide: Tiny Typists' Delight
Posted by Hugh Jack on June 19, 2024 at 10:15am 0 Comments 1 Like
Introduction to Compact Keyboards
Welcome to the world of compact keyboards! These small form factor keyboards are a game-changer when it comes to saving space and typing on the go. Whether you're a student, a professional, or a casual user, compact keyboards offer convenience and portability like never before.
What are Compact Keyboards?
Compact keyboards are smaller versions of traditional keyboards. They come in various…
ContinueSoftware language criteria
Posted by Michael Levin on December 1, 2023 at 3:48am 0 Comments 0 Likes
We have some exciting news to share with you. Otavio will be joining us to discuss the latest version of Camel in an exclusive presentation. Presentation Details: Speaker: Otavio Rodolfo Piske Topic:…
Posted by Michael Levin on September 2, 2023 at 9:21am 0 Comments 0 Likes
We have some exciting news to share with you. Otavio will be joining us to discuss the latest version of Camel in an exclusive presentation.
Presentation Details:
Speaker: Otavio Rodolfo Piske
Topic: Camel 4:What to Expect
Date: 07 September 2023
Time: 19:00 Ist Time
Duration: Approximately 1 hour
Register URL : https://www.eventbrite.com/e/700456483197
Presentation…
ContinueNext OJUG and GatorJUG Meetings will be fabulous - Check out the Codetown Events
Watch for details on our upcoming meetings. OrlandoJUG meeting's fall on the 4th Thursday of every month, in case you want to mark your calendars. Stay tuned for details! GatorJUG meets the 2nd Wednesday of every month.
The details are posted in the CodeTown Events section. Please RSVP so we'll know how much pizza to order. Stay tuned! ...Mike
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Jobs
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Spring Town
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iPhone Development
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Android Town
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GatorJUG Town
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Groovy and Grails
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Startup City
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Computational Linguistic…
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Forum
Error trying to use Fragment
I am new to Android. I have been working thru some examples in a book called Head First Android Development. I entered a small program using fragments and get a Casting Error.cannot cast andoid.app.fragment to…Continue
Tags: Fragment
Started by Robert Sobol in Java Oct 10, 2017.
Fragment Syntax Problem
My name is Rob Sobol.I have been working through a book called Head First Android Development.I hit a syntax error in a simple exercise that uses one fragment. I have been trying to figure out the error for days. I am hoping some in the forum can…Continue
Tags: Fragments
Started by Robert Sobol in Java Oct 10, 2017.
Hadoop getting old?
An article just came out in InfoWorld about trends, which is always an interesting subject. Funny, they said Hadoop wasn't hot. Spark is. It's a good read. …Continue
Tags: codetown, infoworld, programming, hadoop, trends
Started by Michael Levin in Trends Apr 10, 2017.
What's functional programming, anyway?
Can you believe people are still trying to come up with a good definition or explanation of what functional programming is? Paul Krill is a journalist with InfoWorld. Here's an article he just wrote: …Continue
Tags: functions., codetown, lambdas, clojure, programming
Started by Michael Levin in Functional Programming Feb 21, 2016.
Santafe College 2 Replies
Santafe just added a new BAS bachelor's program of study. 5651 ProgrammingContinue
Started by Dan Lackey in Dynamic Languages. Last reply by Michael Levin Feb 15, 2016.
The advantages of a RESTfull web-based API 5 Replies
I need to get a better handle on the advantages of a RESTful web-based API. People tell me they scale better than other methods, but I don't see how they reduce database access or have any other feature that helps handle large amounts of traffic.…Continue
Tags: API', 'web-based, RESTful
Started by Kevin Neelands in Dynamic Languages. Last reply by Kevin Neelands Oct 25, 2015.
Using SQL with Node,.js 1 Reply
All the tutorials and books for node.js seem to use Mongo as the database. I am not sold on 'document' databases and would like to know how difficult it is to use any version for plain old tried-and-true SQL with Node.js.Does anybody have any…Continue
Tags: 'document, databases', SQL, node, node.js
Started by Kevin Neelands in Dynamic Languages. Last reply by Lou Caudell Nov 10, 2015.
Storing Sensitive Data ( like SSNs ) 1 Reply
We might have to store Social Security Numbers. We REALLY don't want to do this in our own database, we'd like some external 'vault' service that stores them encrypted and getting to them is difficult. Does anyone have any ideas along these lines?Continue
Started by Kevin Neelands in Java. Last reply by Michael Levin May 7, 2014.
Oracle Embedded MOOC w/ Raspberry PI 1 Reply
If your interested in playing with Java on Raspberry PI - another round of the "Oracle Massive Open Online Course: Develop Java Embedded Applications Using a Raspberry Pi" is starting May 19th. You can find more details and…Continue
Tags: RaspberryPi, embedded, java
Started by Chris Schaefer in Java. Last reply by Michael Levin Apr 10, 2014.
Documentation standards or guidelines? 1 Reply
Does anyone care to share their suggestions for documentation?I'm asking because I recently had to change a program I wrote more than five years ago. I'd always thought that I've done a good job of documentation. But going through it was difficult.…Continue
Tags: Problems @ 2:00 AM, Maintenance, Documentation
Started by Miek in Java. Last reply by Adam Davis Apr 11, 2014.
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LOCAL Private Telephone System (PBX) with USA number for $1 a month
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Haseeb Qureshi: Doing Good with Your Career
Haseeb Qureshi, notable App Academy graduate, cryptocurrency expert, and philanthropist will be giving a talk on Effective Altruism for App Academy students ...
50% Keyboard Guide: Tiny Typists' Delight
Introduction to Compact KeyboardsWelcome to the world of compact keyboards! These small form factor keyboards are a game-changer when it comes to saving space and typing on the go. Whether you're a student, a professional, or a casual user, compact keyboards offer convenience and portability like never before.What are Compact Keyboards?Compact keyboards are smaller versions of traditional keyboards. They come in various sizes, but the main idea is to provide a keyboard that takes up less space…See More
Why AI Needs a “Nutrition Label” | Kasia Chmielinski | TED
What do sandwiches have to do with AI? Data reformist Kasia Chmielinski helps us think about artificial intelligence with a useful food metaphor — and breaks...
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Proof of Enlightenment (about Apple CEO Steve Jobs), Sesshin Dharma Talk in Puregg, Dienten Austia 1993, Vanja Palmers
Google Engineer on His Sentient AI Claim
Google Engineer Blake Lemoine joins Emily Chang to talk about some of the experiments he conducted that lead him to think that LaMDA was a sentient AI, and t...
I Live Better In Thailand Than I Did In The U.S. - Here's How Much It Costs | Relocated
Jesse Schoberg, 41, relocated to Bangkok, Thailand at the beginning of 2022. He has been living and working abroad since 2008. He currently makes about $230,...
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…
ContinueCreated by Michael Levin Dec 18, 2008 at 6:56pm. Last updated by Michael Levin May 4, 2018.
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InfoQ Reading List
JavaOne 2025 Day 2: FFM API, Virtual Threads, Platform Engineering, Evolution of Jakarta EE
JavaOne 2025, celebrating the 30th birthday of the Java programming language, was held at the Oracle Conference Center in Redwood Shores, California. This three-day event consisted of 80 sessions and hand-on labs, and two keynotes. Day Two, scheduled on March 19th, 2025, included presentations from various conference tracks.
By Michael RedlichPresentation: AI in the Age of Climate Change
Nischal HP discusses the critical role of data credibility in combating greenwashing and enabling effective climate action. He shares how technology can be used to create verifiable data on carbon sequestration, empowering farmers and corporations to participate in carbon markets.
By Nischal HPGitHub Leverages AI for More Accurate Code Secret Scanning
GitHub has unveiled a groundbreaking AI-driven secret scanning feature within Copilot, enhancing password detection in code while significantly reducing false positives. By leveraging advanced context analysis and collaboration with Microsoft, GitHub ensures robust repository security. Experience a new era of code integrity with precision-driven technology now available for all users.
By Steef-Jan WiggersAtlassian Launches ARM Builds for Bitbucket Pipelines
Atlassian has announced ARM-based Linux runners for its Bitbucket Pipelines cloud service, allowing developers to build software artefacts and container images for ARM-based systems. The new feature is available exclusively to Standard and Premium plan customers.
By Matt SaundersArticle: Applying Flow Metrics to Design Resilient Microservices
Software design with resilience is an acknowledgement to the reality that everything fails. We put metrics in place to help us detect and resolve such problems and failures. Flow metrics, commonly used to measure how well teams deliver software, can be used to measure and improve system resilience.
By Mourjo Sen
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