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Vladimir Zakharov

@zakhav.bsky.social
159 followers 189 following 30 posts
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Vladimir Zakharov @zakhav.bsky.social · 05/08/2026
Informative and engaging talk at @nyjavasig.bsky.social today by @speakjava.bsky.social on Modern Java Puzzlers! It's been 20+ years since the previous generation of Java Puzzlers was harvested by @joshbloch.bsky.social and Neal Gafter, the new batch is now ripe for developers to be... inspired by
The presenter, Simon Ritter, to the right of the screen with the title slide of the presentation "Modern Java Puzzlers", Frank Greko is all the way on the left, and in the bottom middle of the photo there is the back of Barry Burd's head. Barry is busy working the audio/video console.
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Jim Grisanzio @grisanzio.bsky.social · 10/07/2026
Out of 77 programs on Duke's Corner, this one here is still #1.
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McSweeney's @mcsweeneys.net · 16/06/2026
"Ben owns a farm. He employs 100 workers. His total payroll is $10 million/year. One day, he buys a mule, which provides the worker who uses it with a modest 10% productivity gain. Ben fires 99 of his workers and purchases 99 mules, expecting a 1,000% productivity gain..."
buff.ly
AI Economics for Dummies
“Xavier owns an apartment that he rents out at a loss of $1 billion/month. Seeing this success, he decides to make financial commitments to construct $850 bi...
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Fredrik Dahlgren @fegge.bsky.social · 08/06/2026
Mythos can dribble a bowling ball. Mythos counted to infinity… twice. Mythos can kill two stones with one bird. Mythos can speak Braille. Etc etc…
A screenshot of a tweet hyping Anthropic’s new model Claude Mythos. The tweet reads:

Mythos 5: We're Not Ready
- Mythos is extremely strong at SVG generation, producing highly detailed outputs that can take several minutes to create
- It is exceptionally good at creating graphics, games, websites, and complex Ul designs
- Mythos is expected to set a new bar for web development and frontend generation, especially for design heavy workflows
- It can also generate surprisingly good music through code
- Anthropic's data suggests Mythos can achieve up to 52x training code speedups in certain optimization tasks, compared to roughly 4x for skilled humans on similar workloads
- Mythos is expected to be extremely expensive, the public version will likely be a nerfed version of the current testing model
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Gunter Rotsaert @mydeveloperplanet.com · 07/05/2026
Programming is fun! If you are programming and not having fun, then you may be doing it wrong. - Donald Raab #quotes #quoteoftheday
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Henry Coles @pitest.bsky.social · 15/04/2026
If anyone would like to help a hungry developer out (and support the development of pitest) I've just setup a GitHub sponsorship link. github.com/sponsors/hco... #java #oss
github.com
Sponsor @hcoles on GitHub Sponsors
Henry is an Oracle Java Champion and has spent the past 15 years making mutation testing popular on the JVM and beyond. He's the creator of PIT/pitest - relied on by thousands of companies worldwid...
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Donald Raab @thedonraab.bsky.social · 16/03/2026
Today, March 16, 2026, is the 1️⃣ year 🎂 of the "Eclipse Collections Categorically: Level up your programming game" paperback release. 🎉 Just a few more hours left to find the "$0.00 to buy" offer of the Amazon Kindle book version in your Amazon marketplace website. 👀 www.amazon.com/Eclipse-Coll...
amazon.com
Eclipse Collections Categorically: Level up your programming game
Eclipse Collections Categorically: Level up your programming game - Kindle edition by Raab, Donald. Download it once and read it on your Kindle device, PC, phones or tablets. Use features like bookmarks, note taking and highlighting while reading Eclipse Collections Categorically: Level up your programming game.
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Vladimir Zakharov @zakhav.bsky.social · 15/02/2026
Indeed
A pink Valentine's Day card with that says:
Roses are red,
Violets are blue,
Eclipse Collections
Uplifts Java for you:
APIs aplenty,
Rich container design;
Buy this book for yourself
And for your Valentine
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Rustam Mehmandarov @rustam.no · 23/01/2026
Just *1,5 hours* to go! Tick-tock! Also, my friend and fellow #JavaChampion @patbaumgartner.com will be hosting this session. I am very excited about this! 🙌 Who's joining?
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Donald Raab @thedonraab.bsky.social · 24/12/2025
The #EclipseCollections #Java library has been FREE and OSS since Dec. 25, 2015. To celebrate the 10 year anniversary, you can get a free Kindle version of the "Eclipse Collections Categorically" book on Dec. 24 & 25, 2025 and Jan. 1, 2026. Happy Holidays! 🤗 🥂
Image of Eclipse Collections Categorically abstract from Amazon with circles around the 100% discount of the Kindle version which are happening on Dec. 24 & 25, 2025 and Jan. 1, 2026An image of the complete list of releases of the Eclipse Collections open source Java collections library going back to the first release of Eclipse Collections 7.0 on December 25, 2015. The dual open source licenses of EPL 1.0 and EDL 1.0 (BSD-3-Clause) for the library are displayed at the bottom.
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Jed Brown @jedbrown.org · 21/12/2025
Professional societies keep beclowning themselves buying into a lie about what an LLM "summary" is. They are inherently counterfeit: not an epistemic product of the ideas in the source, but summary-shaped text linguistically based on *other* works (in the training corpus) that use related language.
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Donald Raab @thedonraab.bsky.social · 06/12/2025
I updated my blog comparing the memory cost of ArrayList and FastList, essentially showing the difference of the presence or absence of the modCount field. Two JVM properties are now enabled and disabled and results compared using Java Object Layout. Enjoy! 🗜️ donraab.medium.com/one-positive...
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Cowtown Coder @cowtowncoder.bsky.social · 03/12/2025
A word for my Potential Future Sponsors! github.com/sponsors/cow... ... if you want to help speed up Jackson development.
github.com
Sponsor @cowtowncoder on GitHub Sponsors
Tatu Saloranta, better known as the "Cowtown Coder", is a long-time Open Source developer. He has authored and maintains many popular Java OSS libraries, including Jackson JSON library, Woodstox an...
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Nicolai Parlog @nipafx.dev · 26/11/2025
JUnit is undoubtedly one of the most important projects in the #Java ecosystem. And it's 100% free and open! Let me be frank: If we can't get THIS project to the point where a single maintainer can focus on it, then what does that say about our commitment to Free & Open Source Software? 1/3 ⏩
steady.page
Support JUnit
JUnit is maintained by a team of passionate volunteers. This is your chance to give back and support the project!
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Vladimir Zakharov @zakhav.bsky.social · 27/10/2025
Need primitive type support and missing container types in the #Java Collections Framework? Many folks are quite content to keep waiting for Valkyries to come and take them to [project] #Valhalla, but some chose to follow Alan Kay’s maxim: "The best way to predict the future is to invent it"
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Donald Raab @thedonraab.bsky.social · 23/10/2025
Still waiting for the #Java of the future to solve all your collection problems? #EclipseCollections has been solving them since J2SE 1.4. Stop waiting. Start refactoring. Eclipse Collections makes Java look, feel, and run like a brand new programming language. donraab.medium.com/refactoring-...
donraab.medium.com
Refactoring to Eclipse Collections with Java 25 at the dev2next Conference
Showing what makes Java great after 30 years is the vibrant OSS ecosystem
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Donald Raab @thedonraab.bsky.social · 18/10/2025
I've been using RandomAccessSpliterator for years in #Java without realizing it. I wrote about this default spliterator years ago. I wrote about it again after learning it is used by immutable Lists created by List.of() and Stream.toList(). Deja vu all over again. donraab.medium.com/spliterating...
donraab.medium.com
Spliterating Hairs Results in Spliterating Deja Vu
How a “Random” question led me down a Java Spliterator rabbit hole.
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Donald Raab @thedonraab.bsky.social · 29/09/2025
I love having 75 minutes to give the "Refactoring to Eclipse Collections" talk at @dev2next.bsky.social with @zakhav.bsky.social. ✔️ Engaging Slide Content ✔️ Live Refactoring ✔️ Memory Costs with Java 25 and JEP 519 ✔️ Ask us anything Yeah, we got time. Tuesday - 10:45am - Salon FGH 🙏
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Donald Raab @thedonraab.bsky.social · 29/09/2025
Join @zakhav.bsky.social and myself tomorrow at 10:45am in Salon FGH to learn why and how we've written #Java code with #EclipseCollections for the past 21 years. I brought a couple paperback copies of "Eclipse Collections Categorically" to give away at the end of our session. Hope to see u there! 🙏
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Donald Raab @thedonraab.bsky.social · 26/09/2025
Using JDK Collections? Lost in a maze of factories? Drowning in streams? Wishing for a better way? Then gather your Gatherers, collect your Collectors and attend "Refactoring to Eclipse Collections" talk at @dev2next.bsky.social to level up your #Java collections game with me and @zakhav.bsky.social
Title slide for "Refactoring to Eclipse Collections" presentation. Subtitle: Making Your Java Streams Leaner, Meaner, and Cleaner. Presented by Donald Raab and Vladimir Zakharov at dev2next Conference in Colorado Springs the week of September 29, 2025.A mind map representing the benefits of refactoring to Eclipse Collections.
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Vladimir Zakharov @zakhav.bsky.social · 24/09/2025
I am excited to speak at @dev2next.bsky.social and to get insights from talks and workshops by industry experts! If you are at dev2next and this drawing gives you the same vibes as the words Enterprise Architecture, join me and we will discuss ways to make architecture more relevant and impactful!
A tower with a bearded man (presumably an enterprise software architect) sticking out of a window at its top and throwing pieces of paper with some writings and diagrams into the wind. A somewhat confused looking man holding a laptop (presumably a software developer) is standing next to the tower.
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Venkat Subramaniam @venkats.bsky.social · 18/09/2025
My good friends at @pragprog.com #pragprog are running a sale on almost all titles. Been waiting to grab a few books? Please see the details below: When: Sept 18, 9am CT – Sept 20, 9am CT Discount: 45% off (PP excluded) Promo code: flashsale Link: pragprog.com
pragprog.com
Pragmatic Bookshelf: By Developers, For Developers
We improve the lives of professional developers. We create timely, practical books on classic and cutting-edge topics to help you learn and practice your craft, and accelerate your career. Come learn ...
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Sharat (Shar) Chander - 🟦🌊 @sharatchander.bsky.social · 16/09/2025
📢#Java 25 is now available!📢 Your: ☕️ FREE ☕️ Multi-platform ☕️ Open source ☕️ Production ready ☕️ Binary release ...made available by @Oracle. Learn more ➡️ blogs.oracle.com/java/post/th... #Java25 #JDK25 #OpenJDK
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Donald Raab @thedonraab.bsky.social · 06/09/2025
After 21 years of developing, using, teaching, collaborating, blogging, podcasting, writing a book about #EclipseCollections, one thing motivates me to keep going. There are millions of #Java developers that don't know what they have been missing for 21 years. 🤔 If you know, then let them know. 🙏
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Virtual Java User Group @virtualjug.bsky.social · 28/08/2025
📢 Completion Time: Want to win a free ticket to attend @dev2next.bsky.social? Fill in this form bit.ly/4mBlv8r by 11 AM (UTC) on Fri, Aug 29, when a draw will be held. The winner will be notified via email. 29 Sep - 2 Oct 25 | Colorado Springs, USA
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Vladimir Zakharov @zakhav.bsky.social · 20/08/2025
A guide to Eclipse Collections now comes with its own guide! 🥳 (And no, there is no guide to the guide to the guide, 🪆-style.) Really, this blog can be a useful pre-read to help you make the most of “Eclipse Collections Categorically”, depending on your goals, learning style, and time constraints.
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Donald Raab @thedonraab.bsky.social · 16/08/2025
I met a developer this week who had never heard of Smalltalk. We are failing ourselves by not learning the innovative things that came before. Smalltalk might be the rejuvenation your programming soul has been longing for. It is different enough to warrant study. 🤔 blog.devgenius.io/a-little-sma...
blog.devgenius.io
A little Smalltalk for the soul
Smalltalk helped me become the software engineer that I am today.
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dev2next.bsky.social @dev2next.bsky.social · 14/08/2025
Have you registered to attend dev2next? Don't miss your chance to join us in beautiful Colorado Springs this fall 🌄 Get ready for world-class workshops, sessions & so much more! Tickets are on regular regestration prices till August 31 so be quick! 🎟️ www.dev2next.com/register
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Sharat (Shar) Chander - 🟦🌊 @sharatchander.bsky.social · 04/08/2025
#Java peers, #JavaOne IS BACK AGAIN IN 2026 (March 17-19). Read our blog to learn more and sign up w/interest if you want to attend, speak, or sponsor: social.ora.cl/6011fdkbH
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dev2next.bsky.social @dev2next.bsky.social · 29/07/2025
Want faster, cleaner Java code? Learn how Eclipse Collections saves memory, cuts boilerplate, & boosts your functional programming style with @thedonraab.bsky.social at dev2next. Live demo included!🦾 www.dev2next.com/speaker/2466... 🎟️ dev2next.com 👀 Code JOIN-DONALDR-50OFF = discount!
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dev2next.bsky.social @dev2next.bsky.social · 28/07/2025
Dev friends: early bird registration for dev2next ends THIS WEEK! Future-focused devs unite! Join us this September for a tech event that’s all about what’s next. 🚀 🎟️ Don't wait, secure your tickets today - www.dev2next.com/register 📅 September 29 - October 2. Colorado Springs.
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Donald Raab @thedonraab.bsky.social · 15/07/2025
I'm excited to be answering questions this week on Code Ranch in the "Open Source Projects" forum about my book, "Eclipse Collections Categorically: Level up your programming game". Welcome: coderanch.com/t/790371/ope... Forum for questions: coderanch.com/f/64/open-so... Enjoy and ask away! 🙏
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Vladimir Zakharov @zakhav.bsky.social · 03/07/2025
Eclipse Collections, is there anything they can't do? [hint: the answer is in the book] #Java #EclipseCollections
A hand holding a coffee mug filled with coffee. The mug has the "Eclipse Collection Categorically" book cover design on it.
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NYJavaSIG @nyjavasig.bsky.social · 21/06/2025
Our next meeting is Wednesday. Anna Chernyshova is speaking about "Testing GenAI Applications in Java with Testcontainers and Docker ". Sign up at www.javasig.com . (Note we are in Lower Manhattan but diff location. Sorry for the late notice; it was hard to find a room)
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dev2next.bsky.social @dev2next.bsky.social · 20/06/2025
Have you registered to attend dev2next? Don't miss your chance to join us in beautiful Colorado Springs this Fall 🌄 Get ready for world-class workshops, sessions & so much more! Tickets are on our early bird prices till July 31st so be quick! 🎟️ www.dev2next.com/register
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dev2next.bsky.social @dev2next.bsky.social · 19/06/2025
Looking to grow your tech community and connect with developers who value learning, growth, and innovation? 🤝 Join us as a Community Supporter for dev2next 2025! Learn more: dev2next.com/supporters
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Venkat Subramaniam @venkats.bsky.social · 17/06/2025
Schedule, Tickets, Raffles, Discounts, and more... for @dev2next www.dev2next.com/1/news
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dev2next.bsky.social @dev2next.bsky.social · 17/06/2025
Escape the ivory tower! See how an Architecture Pattern Catalog helps architects stay connected, guiding developers with practical, proven design patterns with zakhav.bsky.social at dev2next this Fall 🙌 www.dev2next.com/speaker/4b3c... 🎟️ dev2next.com 💥 JOIN-VLADIMIRZ-50OFF = discount
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Vladimir Zakharov @zakhav.bsky.social · 16/06/2025
By Grabthar's hammer... what a perfect gift this book makes. The only reason I didn’t get it today is because I got the very first edition right when it came out back in March. Anyway, can’t think of a better way to wrap up Father’s Day than sitting down with a fine beverage and a good book.
A hand holding a glass of bourbon in front of an open copy of "Eclipse Collections Categorically"
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Sharat (Shar) Chander - 🟦🌊 @sharatchander.bsky.social · 16/06/2025
#Java peers, I ask you to please follow @thedonraab.bsky.social. His expertise and experiences are worth learning more about.
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Donald Raab @thedonraab.bsky.social · 14/06/2025
Blog: Foreword and Onward to Your Next Connection I share advice & personal examples of connections I've made over 25 years. 🙏 @josepaumard.bsky.social @venkats.bsky.social @zakhav.bsky.social @sharatchander.bsky.social @malagupta.bsky.social @loiane.bsky.social donraab.medium.com/foreword-and...
donraab.medium.com
Foreword and Onward to Your Next Connection
The connections in your network are important to discover and invest in.
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Pavel @spavel.bsky.social · 14/06/2025
First we had a text generating machine, but it wasn't enough to raise billions, so it became branded as AI. A year later we still had a text generating machine, but to raise more billions Altman started hawking AGI. Now even AGI isn't enough for yet more billions, so out comes Super Intelligence.
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dev2next.bsky.social @dev2next.bsky.social · 05/06/2025
Join us to explore cutting-edge strategies, tools, and essential practices across 7 tracks! ✏️ Architecture 🔧 DevOps 🏄 Agility 📈 Current Trends ☕ Advancing with Java 🪜 Leadership, & 🍀 Wealth and Wellbeing Secure early bird tickets now here- www.dev2next.com/register
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dev2next.bsky.social @dev2next.bsky.social · 30/05/2025
Super Early Bird Registration for dev2next ends tomorrow 😳 Hurry to secure the lowest price tickets for the conference to learn, apply & improve your craft! With world-class speakers, sessions & more- what are you waiting for? Hope to see you there! 🎟️ dev2next.com
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Venkat Subramaniam @venkats.bsky.social · 29/05/2025
Only a few more days left for the Super Early Bird Registration to end. Join others who have already taken advantage of the lowest price to attend the event. Please see details for @dev2next.bsky.social 2025 at www.dev2next.com/register
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dev2next.bsky.social @dev2next.bsky.social · 15/05/2025
Are you coming to dev2next? Then don't forget you can book under our group reservation for a brilliant discounted rate! 👀 Venue- www.dev2next.com/venue Secure your tickets today currently on our super early bird registration price until May 31- www.dev2next.com/register 🦅
dev2next.com
dev2next Conference
The conference to learn, apply, and improve our craft.
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Donald Raab @thedonraab.bsky.social · 25/04/2025
The paperback version of my book, Eclipse Collections Categorically, has been available since March 16th, 2025. The hardback version of the book will be available on April 30th. Both versions include 200+ #Java code examples in full-color. Thank you, and enjoy! 🙏 donraab.medium.com/book-eclipse...
donraab.medium.com
Book: Eclipse Collections Categorically
Eclipse Collections Categorically: Level up your programming game.
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Donald Raab @thedonraab.bsky.social · 23/04/2025
Thursday after #JavaOne, I saw @starbuxman.joshlong.com create a GraalVM Native Image with #EclipseCollections. I never tried before. A reason some folks provided in the past for not using Eclipse Collections was jar file size. If you're using GraalVM Native Image, what reasons do you still have?
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Vladimir Zakharov @zakhav.bsky.social · 23/04/2025
Really excited about presenting at #InfoQDevSummit. Come to my talk to learn about Java Data Frames and how they compare to Data Frames in other languages! But I am also super excited about gaining insights from amazing speakers, great networking opportunities, and "hallway track" conversations!
A conference badge for InfoQ Dev Summit Boston 2025 for speaker Vladimir Zakharov
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Donald Raab @thedonraab.bsky.social · 17/04/2025
Hardback version of my book, Eclipse Collections Categorically (pictured left), will be available at the end of April 2025! 🙏 WIIFY? Learn to maximize/optimize your usage of high quality OSS #Java code that has been used in production apps and libraries for 21 years. More WIIFY + link in comment.
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