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Codetown ::: a software developer's community
Codetown is a software developer's community. It's a technical networking and educational group focused on software development.
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Issue 272 - Hacking Enums Revisited
In a previous newsletter, we looked at how we could dynamically add new enums and also rewire affected switch statements. Due to improvements in Java security, our old approach needs to be updated for Java 12.Issue 271 - HttpClient Executors
Java 11 added the HttpClient to give us a better way to send HTTP requests. It supports asynchronous and synchronous mode. HTTP2 comes out of the box. The threading is a bit funky though and Professor Cay Horstmann explores how things work underneath the covers.Issue 270 - Excursions into Deduplication
When are Strings deduplicated? How can we find out whether they are of any benefit in our application? How much does it cost in terms of CPU? We try to show you how we can get this from the deduplication statistics provided by the JVM.Issue 269 - Heterogeneous Comparisons
The compareTo() function has three rules. Break any one of them and you might get an exception when you sort. In this newsletter we explore what these rules are and how they can affect sorting.Issue 268 - Puzzle: Is a Programmer a Person?
In today's puzzle, we want to sort a list of persons. It works in some versions of Java, but not in others. You need to figure out why.Birthdays
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Events
January 23
Thursday
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OrlandoJUG ::: JPA 2.1 Entity Graphs in Spring Data with Richard
January 23, 2020 from 6pm to 8pm – Starter Studio
Join us for a talk featuring Richard Thibault Richard Thibault is a full-stack web and mobile developer with over 25 years of experience in the software industry. He is currently focused on Java a…
Organized by Michael Levin | Type: meetup
Blog Posts
IBM is moving OpenPower Foundation to The Linux Foundation
Posted by Michael Lucas on August 22, 2019 at 8:18am 0 Comments 0 Likes
Swampcast features Tim Westergren, Pandora CEO
Posted by Michael Levin on August 3, 2019 at 12:30pm 0 Comments 0 Likes
Join Michael Levin in this Swampcast interview with Tim Westergren, Pandora CEO. Click here to listen. Photo…
Swampcast features Craig Newmark
Posted by Michael Levin on July 11, 2019 at 1:30pm 0 Comments 0 Likes
Here's a Swampcast featuring Craig Newmark, founder of Craigslist. Enjoy!
Wikipedia ::: Swampcast podcast features Brion Vibber, Wikipedia CTO
Posted by Michael Levin on June 27, 2019 at 1:29am 0 Comments 1 Like
Next 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
Groups
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Jobs
75 members
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OrlandoJUG Town
94 members
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GatorJUG Town
30 members
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Android Town
35 members
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Kotlin Town
6 members
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Coding Dojo
6 members
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Java SE Town
14 members
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Spring Town
48 members
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Python
15 members
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Freelance Village
11 members
Forum
Be Careful What You Wish For
Interesting. Ask Elon Musk what scares him…Continue
Tags: Braintree, PayPal, kernal, google, neuralink
Started by Michael Levin in AI, ML & Big Data Aug 8.
Java books for any library 5 Replies
What books should be on the bookshelf of EVERY Java programmer, no matter what specific technologies they are working on?The two that come to my mind areThinking in JavaJava Concurrency in PracticeWhat else am I missing?Continue
Started by David Moskowitz in Java. Last reply by sneha gulati Feb 8.
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.
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.
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.
Want a Job? 1 Reply
Hi, Not sure if this is the appropriate place to post this sort of things (forgive me if its not). My company (really nice company btw) is looking to hire two junior and two senior Java Developers. Please forward me your resume to slaassel@gmail.com…Continue
Started by Saad Laassel in Java. Last reply by Theresa Wizorek-MacIntyre Oct 15, 2014.
Latest Activity
"Hi Heinz!
Thanks for that. I keep it on the downlow most of the time. But, hey the subject came up! I thought about it a couple of days before I said anything. This is a perfect spot for JCs. Glad you are interested. I’ll be at happy hour,…"
Python Trainer in MD
Hello Codetown!Cambridge is looking for a Python expert to teach an Intro Python class 9/16-18 The Intro class is a 3 day onsite class. Curriculum will be provided. The rate varies from $45-55/hr DOE. 1099 only. Sorry, no H1B's. For more details, please contact jobs@cambridgeweb.ie or text +1 (321) 252-9322.Cambridge is an EOE employer.See More
"We're proud to partner with #TFWorld in Santa Clara, October 28–31. Save 20% w/code USRG.
https://oreil.ly/2yeiLHv"
Be Careful What You Wish For
Interesting. Ask Elon Musk what scares him about AI. Watch the Joe Rogan interview. Be careful what you wish for. AI knows you better than you know yourself. Don’t bother wondering if it’s true. It’s true.…See More
Amanda Hinchman-Dominguez - Kotlin: The Next Frontier in Metaprogramming
Topic In an epic quest using Kotlin and native desktop development to generate UI testing for the TornadoFX framework, we turn to metaprogramming in Kotlin t...
Amanda Hinchman-Dominguez - Kotlin: The Next Frontier in Metaprogramming
Topic In an epic quest using Kotlin and native desktop development to generate UI testing for the TornadoFX framework, we turn to metaprogramming in Kotlin t...
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 (400 W Livingston ST Orlando, FL 32801)Refreshments: Lunch will be provided Equipment: Please if possible bring your own laptop If there is anyone else within your organization still interested in…See More
Be Careful What You Wish For
Interesting. Ask Elon Musk what scares him about AI. Watch the Joe Rogan interview. Be careful what you wish for. AI knows you better than you know yourself. Don’t bother wondering if it’s true. It’s true.…See More
Larry Ellison: Billionaire Samurai Warrior of Silicon Valley
Dec. 3 (Bloomberg) -- BLOOMBERG GAME CHANGERS follows Larry Ellison from his early days in Chicago through the founding of the multi-billion-dollar software ...
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.
Looking for Jobs or Staff?
Check out the Codetown Jobs group.
There's also a free Java Jobs mailing list. It's a Yahoo group so you have to create a Yahoo account to use it.
InfoQ Reading List
Google Software Engineering Culture
Several Google engineering practices have been largely adopted across the company until today and still contribute to its success. In 2017 a staff software engineer published some of these practices, not limited to software development. Today, Google fosters a team culture of creativity, autonomy, and innovation.
By Shaaron A AlvaresPresentation: Are We Really Cloud-Native?
Bert Ertman goes beyond the hype of being Cloud-native and focuses instead on what being Cloud-native actually requires in terms of skills and experience for Java Developers and how it affects and impacts traditional systems design.
By Bert ErtmanPresentation: Scaling DB Access for Billions of Queries per Day @PayPal
Petrica Voicu and Kenneth Kang talk about Hera (High Efficiency Reliable Access to data stores) – an open-source in the Go programming language – and how it helps PayPal to manage database access and deal with issues. Hera scales thousands of PayPal’s applications with connection multiplexing, read-write split, and sharding.
By Petrica Voicu, Kenneth KangChange to AWS Lambda Networking Reduces Cold Start Time for VPC Customers
AWS announced changes to how Lambda functions connect to resources in a Virtual Private Cloud (VPC). This change — using pre-created network interfaces instead of network interfaces created for each function execution environment — cuts out a major factor in "cold starts" for serverless functions.
By Richard SeroterArticle: Rethinking Flink’s APIs for a Unified Data Processing Framework
Since its very early days, Apache Flink has followed the philosophy of taking a unified approach to batch and streaming. The core building block is the “continuous processing of unbounded data streams, with batch as a special, bounded set of those streams.” Recent updates to the Flink APIs include architectural designs by the community to support batch and streaming unification in Apache Flink.
By Aljoscha Krettek
© 2019 Created by Michael Levin.
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