Closed my "Tatu's OSS in 2025" diary -- github.com/cowtowncoder... -- it's cool to see how much I got done; sometimes progress feels slow so it is good to take (and review) some notes. :)

Please don't forget to give what you can this year, we can't come close to filling the gap that our government has created but it still matters

Per NY Times’s Michael Grynbaum on X, this is Sharyn Alfonsi’s email to her “60 Minutes” colleagues in full:

And this is what Security Theater often looks like: github.com/FasterXML/ja...

BRAVO to COSTCO for standing up to trump, and SUING his ass for imposing his idiotic tariffs. In a world full of Targets, be a COSTCO.

Exciting News 🎉 Spring Boot 4.0.0 is here: spring.io/blog/2025/11...

Anyone have a link to something showing how to do Code Coverage (jacoco) on Quarkus-based service being `@QuarkusIntegrationTest`ed, when Q service runs using TestContainers?

A word for my Potential Future Sponsors! github.com/sponsors/cow... ... if you want to help speed up Jackson development.

UGH. GenAI Slop spreading: HR tool replaced simple "show PTO balance" with Chatbot (ditto for requesting time-off). Much worse interface, strictly inferior, costlier all around. Initial feeling was "fuck this shit -- I'm out". What is this even? Some corporate goals for "Use. MORE. AI!"?!?

I feel like one of the most underrated explanations for what's happening right now in global politics is that almost everyone has lost their minds.

"That would be an ecumenical matter"

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 ⏩

Liking Claude Code even more: I'm slow adopter, but today got into tool-making; asked Claude to write a script to find all `jackson-databind` issues with 5 or more upvotes. 1-shotted nice Python script that called Github API and it... Just Worked. Old News I know. But I'm getting there.

Good intro: medium.com/@maahisoft20...

X has changed their policy and now you can see where the accounts are based. Here’s an “influencer from Texas”

What we often have is Degenerative AI... :-/

/5 Now. Members of the United States military are not obligated to follow unlawful orders. This is baked into the law; it’s not subject to dispute. A soldier refusing an order will have to establish the order was ”manifestly unlawful.”

Had forgotten approx. size of Jackson codebase, checked. Somewhat smaller than I thought. FWTW, LoCs: 1. `jackson-core` (streaming JSON read/write): ~60k 2. `jackson-databind` (Java Object mapping): ~135k 3. `jackson-annotations`: ~6k (2.20.0 and 3.0.0 very similar). So abt 200k of Java for core

I often think about this... xkcd.com/1172/

thanks for attending the Seattle Java User Group last night @jonatan-ivanov.bsky.social @cowtowncoder.bsky.social @seattlejug.bsky.social Slides are available here: docs.google.com/presentation...

Another great talk tonight at SeaJUG! www.meetup.com/seajug/event... -- any local corporations interested in sponsorship? Spots available!

Interesting read, makes sense: medium.com/@chrisdunlop...

Only now realized (thanks to doctorow.medium.com/https-plural... f.ex) how problematic using Apps for ordering is -- can actually (try to) enforce ToS very much unlike with non-app transactions. Nasty.

After a year of work, we are happy to share that Spring Framework 7.0 GA is now available! spring.io/blog/2025/11... Time to celebrate, get a bit of rest and help the team to prepare Spring Boot 4.0 GA release planned November 20th 😊 #spring #java

Why do people start with a possibly good straight-forward idea, but then complify specification and fux0r it up? See github.com/toon-format/... -- smells like YAMLng. :-p ("hey....... wouldn't it be cool to add like, say, path folding!!! yea let's add that")

Good (not brief but good) explanation of why Stock Buybacks Suck: doctorow.medium.com/https-plural...

What. The?! " Would you like me to: 1. Revert my changes and document the findings? 2. Continue investigating with a different approach? 3. Keep my current partial fix and note it as a work-in-progress? > 1 ⏺ Let me continue investigating with a different approach "

Does anyone know if JD met with Dick Cheney lately?

Ugggh. Today is the day I hate Git. 💩

Still rather impressed by Claude Code: 5 Jackson bugs/RFEs fixed in as many days, and all but 1 kind that I just hadn't found time to tackle. F.ex this PR github.com/FasterXML/ja... for issue filed in... 2014. Thinking of Blogging about "Tatu's Simple Stupid Claude Code Workflow For E-Z Bug Fixes"?

Jackson 2.20.1 patch version -- github.com/FasterXML/ja... -- released. #java #json #csv #xml

Look at this ridiculous primitive country, casting out its sex pests rather than making them Presidents or Mayors or Supreme Court justices

Jackson 2.19.4 (github.com/FasterXML/ja...) patch release out -- 2.19 branch now closed (leaving LTS 2.18, and 2.20 as open 2.x branches). #java #json #jackson #xml etc

Finally managed to squeeze the follow-up (to "Jackson 3.0 released") blog post out -> cowtowncoder.medium.com/why-upgrade-...

Finally managed to squeeze the follow-up (to "Jackson 3.0 released") blog post out -> cowtowncoder.medium.com/why-upgrade-...

ICE: thug trash.

Jackson 2.18.5 release out, see github.com/FasterXML/ja... . (NOTE: 2.18 is the first LTS (Long-Term Support) Jackson version -- will stay open longer than 2.19 and 2.20)

Customers who saw Ring doorbells as a convenient tool in the fight against porch piracy have effectively (if unintentionally) teamed up with Amazon to build “a crowd-sourced, nationwide, neighborhood surveillance network to which the government now has a set of keys.” nymag.com/intelligence...

TLDR; The PSF has made the decision to put our community and our shared diversity, equity, and inclusion values ahead of seeking $1.5M in new revenue. Please read and share. pyfound.blogspot.com/2025/10/NSF-... 🧵

Planning to expose data store via MCP, but in a dynamic way: DB entity owners need to explicitly "open up" resources. Java has MCP server functionality (Quarkus f.ex has really nice extension), but all seem to be static. Anyone familiar with more dynamic Java libraries/frameworks?

I have updated the blog post after Spring Boot 4.0.0-RC1 release, which restores in a deprecated form the Jackson 2 auto-configuration to help migrating, and Spring Security 7.0.0-RC1 one that leverages "safe default typing".

This is the guy who lied on the stand at a trial in LA, telling the jury he witnessed the defendant assault the ICE officer, when the video showed the ICE officer assault the defendant. The jury took an hour to acquit. He's referred to immigrants as "filth, trash, and scum."

Ok. With furious urgency, I tried FOURTH fix -- third hardest so far, for github.com/FasterXML/ja... -- and things went well until I... Pro Subsciber... finally ran out of tokens :-) So time to take a break. This has been fun. And scary. And.... transformative.

Another One Bites the Dust! Claude slayed github.com/FasterXML/ja... -- once again something I'd have figured out, but didn't have time to dig into. Impressed by Claude reading brief desc (I thought I had added failing test but I hadn't), grokking it all. Asked to write test; did so...

Ok: upping the ante quite a bit -- this -- github.com/FasterXML/ja... -- seems def non-trivial... let's see how Claude does cracking that nut.

Getting serious about gen-ai coding by playing with Claude Code. Begin genuinely impressed by even just initial introspection it does for a github project like, say, jackson-jr (hoping to vibe code one of issues today -- earlier gen-ai provided (contributed by a user) not quite there but...

ChatGPT being honest: ---- Option 1: Command-line flag Run your Java program (or Gradle build) with: -Djava.lang.stringCompression=none However — this does not exist. There’s no public system property for disabling Compact Strings.

I for one think the Epstein Ballroom will be magnificent. I love the decor theme of “what if Uday Hussein ran a Ramada Inn.” And giving it a theme song everyone will associate with it is a stroke of brilliance! “Thank Heaven for Little Girls” is very catchy.