Codetown

Codetown ::: a software developer's community

GatorJUG Town

Information

Gainesville JUG, this is your place. Gather here to network, trade tips and ideas, or ask questions. You can create discussions and upload code. Check the Codetown Events section for meeting info.

Location: Gainesville, FL
Members: 30
Latest Activity: Feb 25, 2021

GatorJUG Town

Hello, GatorJUG!

Welcome to your new home on the web. This is going to be a much more sociable place to get together - virtually. www.gatorjug.org, points here now. Check the Codetown Events section for meeting info.

Meanwhile, take a look around CodeTown while you're here. This framework is Java-based with a PHP front end. We've got many groups here to peruse. Our meetings will be listed in the Events section.

Have fun!

All the best,

Michael Levin

Discussion Forum

JUG Meeting in Orlando tonite!

We're having a JUG meeting tonight if you know anyone interested. Eden Bar, 5:30-7:30. Free bevs! It’s in Orlando. Details here: www.Orlandojug.org and at the Ojug meetup site.Continue

Started by Michael Levin Feb 25, 2021.

J4K Conference —- here’s a code for free admission!

OrlandoJUG is a community partner for the J4K conf @ Hilton Buena Vista Orlando 7/30 Use code J4KREG for free admission www.j4k.io See you there!Continue

Tags: J4k

Started by Michael Levin Jul 21, 2019.

OSCON raffle!

Hello Juggies!Have you ever been to OSCON? It’s the O’Reilly Open Source Conference. If you have, you wanna go back! If not, you wanna go!OSCON is arguably the best open source conference around. It’s in Portland, OR (awesome city), July 15-18 and we are lucky to have one ticket to raffle off!Flights are cheap. Check Southwest. Places to stay are abundant. Great hostels and hotels, Airbnb’s and more. Public xport is easy. It’s a bicyclist’s dream, too.OSCON has great sessions on everything from languages to operating systems, architecture to project management. There’s an expo with loads of companies and it’s also a good place to network for jobs and staff.After hours is also a blast with happy hours, activities like a fun run, more!If you’re interested in checking it out, http://www.oscon.com is the URL. You also get access to Safari, the online book library.All in all, it’s the best educational and social experiment I know of, and if you want to…Continue

Started by Michael Levin May 31, 2019.

O'Reilly Open Source Convention | July 16–19, 2018 | Portland, Oregon

O'Reilly Open Source Convention | July 16–19, 2018 | Portland, Oregon OSCON didn’t get to be the longest running software conference by accident. Developers, engineers, and business leaders like you who build and support transformative technologies make OSCON the heartbeat of the movement. Join us in Portland July 16-19 for our 20 year anniversary for perspective on the decisions that strengthen and grow companies, deep knowledge of the technology to make it happen, and access to a community that can help both you and your organization thrive.Save 20% on most passes with discount code USRG. Link: http://www.oreilly.com/pub/cpc/125414 Continue

Tags: codetown, oscon

Started by Michael Levin Jun 15, 2018.

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Reading List ::: from JavaSpecialists

Issue 307 - AccessFlag Set for Modifiers

Reflection returns the modifiers of class elements as an unqualified int bitset. Unfortunately some of the bits have a different meaning depending on their context. For example, a method can have their transient bit set, even though that does not make sense for a method. In Java 20, we now have a more accurate and robust enum based representation for modifiers.

Issue 306 - Measuring compact strings memory savings

JEP 254 replaced the char[] in our Strings with byte[]. How much memory does this save in our Strings? In this newsletter we show how we can determine this from a heap dump file.

Issue 305 - Contributing BigInteger.parallelMultiply() to OpenJDK

BigInteger has clever algorithms for multiplying large numbers. Unfortunately multiply() is single-threaded. Until now. In this newsletter I describe how the new parallelMultiply() method works and also how we can all contribute to the OpenJDK.

Issue 304 - ObjectInputFilter

JEP 290 introduced the ObjectInputFilter, which we can use to filter objects returned from an ObjectInputStream. We examine three ways of making filters, through subclassing, with factory methods and with text patterns, and then show some interesting edge cases.

Issue 303 - Null Keys and Values in Maps

Some Map implementations allow null keys and values. This leads to funky behaviour when calling putIfAbsent() and the compute functions. In this newsletter we look a bit more closely at the issues at hand when allowing nulls in maps.

More…

Comment Wall

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Comment by Michael Levin on May 8, 2015 at 1:09pm: GatorJUG meets on the 2nd Wed every month from 6-8PM. Details at http://www.codetown.com/events

Members (30)

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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…

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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

Article: Rapid Startup of Your Cloud-Native Java Applications Without Compromise

This article discusses the significance of startup time in cloud-native computing, highlighting challenges for JVM-based apps. It introduces Liberty InstantOn, which boosts startup times using checkpoint/restore technology, offering fast startup without compromising Java capabilities or facing static compilation trade-offs.

By Tobi Ajila, Thomas Watson

Amazon OpenSearch Service Introduces Security Analytics

Amazon recently announced the general availability of security analytics for OpenSearch Service. The new capability of the successor of ElasticSearch Service provides threat monitoring, detection, and alerting features to help manage security threats.

By Renato Losio