#jruby — Public Fediverse posts

Charles Nutterさん「Twenty Years of JRuby」 〜RubyKaigi 2026 2日目キーノート
https://gihyo.jp/article/2026/05/rubykaigi-2026-keynote-report-day2?utm_source=feed

#gihyo #技術評論社 #gihyo_jp #RubyKaigi_2026 #Ruby #Matz #プログラミング #JRuby #Ruby_on_Rails #Java

Charles Nutterさん「Twenty Years of JRuby」 〜RubyKaigi 2026 2日目キーノート
https://gihyo.jp/article/2026/05/rubykaigi-2026-keynote-report-day2?utm_source=feed

#gihyo #技術評論社 #gihyo_jp #RubyKaigi_2026 #Ruby #Matz #プログラミング #JRuby #Ruby_on_Rails #Java

Charles Nutterさん「Twenty Years of JRuby」 〜RubyKaigi 2026 2日目キーノート
https://gihyo.jp/article/2026/05/rubykaigi-2026-keynote-report-day2?utm_source=feed

#gihyo #技術評論社 #gihyo_jp #RubyKaigi_2026 #Ruby #Matz #プログラミング #JRuby #Ruby_on_Rails #Java

Ah, #TruffleRuby, the lovechild of an #Oracle internship and a decade-long #PhD ✨. Because nothing screams "cutting-edge" like languishing in academic obscurity until the almighty #Shopify swoops in to sprinkle some e-commerce magic dust 💸. But hey, at least it can outrun JRuby—because that's what we were all waiting for, right? 😏
https://chrisseaton.com/truffleruby/ #eCommerce #JRuby #HackerNews #ngated

Ah, #TruffleRuby, the lovechild of an #Oracle internship and a decade-long #PhD ✨. Because nothing screams "cutting-edge" like languishing in academic obscurity until the almighty #Shopify swoops in to sprinkle some e-commerce magic dust 💸. But hey, at least it can outrun JRuby—because that's what we were all waiting for, right? 😏
https://chrisseaton.com/truffleruby/ #eCommerce #JRuby #HackerNews #ngated

Ah, #TruffleRuby, the lovechild of an #Oracle internship and a decade-long #PhD ✨. Because nothing screams "cutting-edge" like languishing in academic obscurity until the almighty #Shopify swoops in to sprinkle some e-commerce magic dust 💸. But hey, at least it can outrun JRuby—because that's what we were all waiting for, right? 😏
https://chrisseaton.com/truffleruby/ #eCommerce #JRuby #HackerNews #ngated

Ah, #TruffleRuby, the lovechild of an #Oracle internship and a decade-long #PhD ✨. Because nothing screams "cutting-edge" like languishing in academic obscurity until the almighty #Shopify swoops in to sprinkle some e-commerce magic dust 💸. But hey, at least it can outrun JRuby—because that's what we were all waiting for, right? 😏
https://chrisseaton.com/truffleruby/ #eCommerce #JRuby #HackerNews #ngated

Ah, #TruffleRuby, the lovechild of an #Oracle internship and a decade-long #PhD ✨. Because nothing screams "cutting-edge" like languishing in academic obscurity until the almighty #Shopify swoops in to sprinkle some e-commerce magic dust 💸. But hey, at least it can outrun JRuby—because that's what we were all waiting for, right? 😏
https://chrisseaton.com/truffleruby/ #eCommerce #JRuby #HackerNews #ngated

【初心者】JRubyによるJavaFX(FXML)アプリの基本
https://qiita.com/SeijiMiwa/items/10927d287bdaa1f7eb02?utm_campaign=popular_items&utm_medium=feed&utm_source=popular_items

#qiita #Java #Ruby #JRuby #JavaFX #FXML

【初心者】JRubyによるJavaFX(FXML)アプリの基本
https://qiita.com/SeijiMiwa/items/10927d287bdaa1f7eb02?utm_campaign=popular_items&utm_medium=feed&utm_source=popular_items

#qiita #Java #Ruby #JRuby #JavaFX #FXML

The Mocha test suite continues it's proud tradition of acting as an extra set of regression tests for JRuby - this time finding an obscure bug in keyword argument handling! 🎉

And, as always, I'm very appreciative of the work of @headius and the JRuby team! ❤️

https://github.com/jruby/jruby/issues/8976

#jruby #ruby #kwargs #testing

The Mocha test suite continues it's proud tradition of acting as an extra set of regression tests for JRuby - this time finding an obscure bug in keyword argument handling! 🎉

And, as always, I'm very appreciative of the work of @headius and the JRuby team! ❤️

https://github.com/jruby/jruby/issues/8976

#jruby #ruby #kwargs #testing

The Mocha test suite continues it's proud tradition of acting as an extra set of regression tests for JRuby - this time finding an obscure bug in keyword argument handling! 🎉

And, as always, I'm very appreciative of the work of @headius and the JRuby team! ❤️

https://github.com/jruby/jruby/issues/8976

#jruby #ruby #kwargs #testing

The Mocha test suite continues it's proud tradition of acting as an extra set of regression tests for JRuby - this time finding an obscure bug in keyword argument handling! 🎉

And, as always, I'm very appreciative of the work of @headius and the JRuby team! ❤️

https://github.com/jruby/jruby/issues/8976

#jruby #ruby #kwargs #testing

The Mocha test suite continues it's proud tradition of acting as an extra set of regression tests for JRuby - this time finding an obscure bug in keyword argument handling! 🎉

And, as always, I'm very appreciative of the work of @headius and the JRuby team! ❤️

https://github.com/jruby/jruby/issues/8976

#jruby #ruby #kwargs #testing

The #oslo #airport refuel application is using an #Android application written in @JRuby says @headius at @balticruby.

#jruby #ruby #rubyprogramming #ruboto #androiddev #androiddevelopment #riga #BalticRuby #balticruby2025

🎨✨ So, our brave hero attempts to blend #JRuby with #JFreeChart to create "beautiful" charts, because nothing screams elegance like a Frankenstein mix of Java and Ruby. 🙃🔧 Apparently, collaborating with Japanese Ruby enthusiasts just confirmed that using external libraries in Ruby is about as straightforward as teaching a cat to code. 🙄🐱‍💻
https://blog.headius.com/2025/04/beautiful-charts-with-jruby-and-jfreechart.html #RubyOnRails #DeveloperHumor #CodingStruggles #HackerNews #ngated

Creating beautiful charts with JRuby and JFreeChart

https://blog.headius.com/2025/04/beautiful-charts-with-jruby-and-jfreechart.html

#HackerNews #Creating #beautiful #charts #with #JRuby #and #JFreeChart #JRuby #JFreeChart #DataVisualization #Programming

Which JVM language fits your stack? #Kotlin for Android, #Scala for Spark, #Groovy for testing, #Clojure for concurrency, #JRuby & #Jython for scripts. Each solves different dev pains—fully JVM-compatible.

Mihaela Gheorghe-Roman shows the big picture: https://javapro.io/2025/10/09/the-rise-of-jvm-languages-kotlin-scala-groovy-and-more/

@headius
I need to run this again to see what might have changed but there is a guide from earlier that I wrote:
https://notepad.onghu.com/2021/jruby-win-day2-creating-jar-files/

But I am delighted that some of the niggling issues might have now been resolved.

#JRuby #Ruby #Programming

Does anyone have a good example of integrating a dynamic language such as JS, Python, or similar (jruby, jgroovy...) into a running Java program as a customer-controlled extension? We are not talking about high-performance here, rather simple API use for a more sophisticated configuration than just XML or JSON data. Must be runtime, not build time. Thanks.

Java itself would be great, but it must be a rather secure approach because it will be hosted. #java #API #extensions #groovy #jruby

@mistergibson @henrycatalinismith If you JRuby with Gradle, the Simplified JRuby Gradle plugin now has support for this (as from 2.2.0).

Just replace `ruby.gems()` with `ruby.coop()`.

#ruby #jruby #gradle

@headius it has been ages that I stumbled over a different handling between #MRI and #JRuby but today it has happened. 😉

EDIT: nevermind. I converted the references but I'm still open to feedback if you have any.

I'm surely doing something wrong, so I'm open in case you have any advice for me.

https://github.com/rails/marcel/actions/runs/18431055272/job/52518425738?pr=132

#TruffleRuby is affected too.

Using #JRuby and #Tomcat:
https://dev.to/santattech/using-tomcat-for-blazing-fast-jruby-war-testing-m9o

#Programming

#JRuby is an important part of the OSS and #JVM ecosystem…if you or your company can help support @headius and team’s work please get in touch with him!
https://mastodon.social/@headius/114818341184298906

JREとJRubyのインストール（2025年） #Ruby - Qiita
https://qiita.com/sonota88/items/18620d1b50122006dbb2

書きました

#jruby

JRuby's activerecord-jdbc-adapter doesn't yet support ActiveRecord 8. How should a gem which depends on ActiveRecord try to best support both CRuby and JRuby?
https://rubygems.org/gems/activerecord-jdbc-adapter/versions/71.0-java

#activerecord #jruby

Why is ActiveRecord > 7.1 still broken on JRuby? Appears activerecord-jdbc-adapter still hasn't been updated.
https://github.com/ronin-rb/ronin-db-activerecord/actions/runs/9264533331/job/25484805001
#activerecord #jruby

@headius @JRuby how to create an app with #Ruboto. 🤔
I was always curious about this and #jruby development for native #Android apps.

I've seen a change in behaviour of Hash.ruby2_keywords_hash? in JRuby v10 manifested as some test failures in this Mocha CI build:

https://app.circleci.com/pipelines/github/freerange/mocha/857/workflows/99ea71bc-a02f-4f35-aeac-6e61b2c97a33/jobs/12856

I’ve managed to narrow things down a bit in the example in this issue:

https://github.com/jruby/jruby/issues/8784

Anyone else seeing this?

#ruby #jruby #keyword

Rubyists! Loofah v2.21.0.rc1 is out with:

- HTML5 parser support
- official JRuby support (finally)

Check out the README at https://github.com/flavorjones/loofah for info on HTML5 support.

Release notes at https://github.com/flavorjones/loofah/releases/tag/v2.21.0.rc1

#ruby #loofah #html5 #jruby

Also, would JRuby users prefer the headless or headful (with AWT/Swing/SWT GUI support) OpenJDK be installed by ruby-install when installing JRuby? /cc @headius

#jruby #rubyinstall #ruby_install

@super @truffleruby @eregon That's a really good question! My guess is most pure #RubyLang #RubyGems will work out of the box, but anything with #FFI native extensions might still have issues because it's fundamentally a different #RUBY_ENGINE. #JRuby and others have the same problem, so I don't think that's specific to #TruffleRuby, but maybe there's a plan to solve for that.

Rubyists! Loofah v2.21.0.rc1 is out with:

- HTML5 parser support
- official JRuby support (finally)

Check out the README at https://github.com/flavorjones/loofah for info on HTML5 support.

Release notes at https://github.com/flavorjones/loofah/releases/tag/v2.21.0.rc1

#ruby #loofah #html5 #jruby

Rubyists! Loofah v2.21.0.rc1 is out with:

- HTML5 parser support
- official JRuby support (finally)

Check out the README at https://github.com/flavorjones/loofah for info on HTML5 support.

Release notes at https://github.com/flavorjones/loofah/releases/tag/v2.21.0.rc1

#ruby #loofah #html5 #jruby

Rubyists! Loofah v2.21.0.rc1 is out with:

- HTML5 parser support
- official JRuby support (finally)

Check out the README at https://github.com/flavorjones/loofah for info on HTML5 support.

Release notes at https://github.com/flavorjones/loofah/releases/tag/v2.21.0.rc1

#ruby #loofah #html5 #jruby

Rubyists! Loofah v2.21.0.rc1 is out with:

- HTML5 parser support
- official JRuby support (finally)

Check out the README at https://github.com/flavorjones/loofah for info on HTML5 support.

Release notes at https://github.com/flavorjones/loofah/releases/tag/v2.21.0.rc1

#ruby #loofah #html5 #jruby

#RDF4j is a #semantic web stack written in #java and a proper #eclipse project. The new java capabilities allow some really sweet code. Some work we did was inspired by #JRuby and @headius. Which seems odd, but their use of invoke dynamic style code also applies to database query languages :D

#RDF4j is a #semantic web stack written in #java and a proper #eclipse project. The new java capabilities allow some really sweet code. Some work we did was inspired by #JRuby and @headius. Which seems odd, but their use of invoke dynamic style code also applies to database query languages :D

#RDF4j is a #semantic web stack written in #java and a proper #eclipse project. The new java capabilities allow some really sweet code. Some work we did was inspired by #JRuby and @headius. Which seems odd, but their use of invoke dynamic style code also applies to database query languages :D

#RDF4j is a #semantic web stack written in #java and a proper #eclipse project. The new java capabilities allow some really sweet code. Some work we did was inspired by #JRuby and @headius. Which seems odd, but their use of invoke dynamic style code also applies to database query languages :D

@Demo318 what do you mean exactly?

Native Ruby isn't available on those platforms.
You'd need #JRuby (only #Android) or #RubyMotion (closed source solution) for that.

#CrystalLang also has some Android PoCs but I'm not aware of anything iOS related.

So what differences are you referring to exactly?

Or do you know of a modern wave practical solution for Ruby?
I'm not quite sure which differences are to compare here especially since I don't know anything except RubyMotion on iOS. 🤔

@super @truffleruby @eregon That's a really good question! My guess is most pure #RubyLang #RubyGems will work out of the box, but anything with #FFI native extensions might still have issues because it's fundamentally a different #RUBY_ENGINE. #JRuby and others have the same problem, so I don't think that's specific to #TruffleRuby, but maybe there's a plan to solve for that.

@super @truffleruby @eregon That's a really good question! My guess is most pure #RubyLang #RubyGems will work out of the box, but anything with #FFI native extensions might still have issues because it's fundamentally a different #RUBY_ENGINE. #JRuby and others have the same problem, so I don't think that's specific to #TruffleRuby, but maybe there's a plan to solve for that.

@super @truffleruby @eregon That's a really good question! My guess is most pure #RubyLang #RubyGems will work out of the box, but anything with #FFI native extensions might still have issues because it's fundamentally a different #RUBY_ENGINE. #JRuby and others have the same problem, so I don't think that's specific to #TruffleRuby, but maybe there's a plan to solve for that.

@super @truffleruby @eregon That's a really good question! My guess is most pure #RubyLang #RubyGems will work out of the box, but anything with #FFI native extensions might still have issues because it's fundamentally a different #RUBY_ENGINE. #JRuby and others have the same problem, so I don't think that's specific to #TruffleRuby, but maybe there's a plan to solve for that.

@headius it has been ages that I stumbled over a different handling between #MRI and #JRuby but today it has happened. 😉

EDIT: nevermind. I converted the references but I'm still open to feedback if you have any.

I'm surely doing something wrong, so I'm open in case you have any advice for me.

https://github.com/rails/marcel/actions/runs/18431055272/job/52518425738?pr=132

#TruffleRuby is affected too.

@headius it has been ages that I stumbled over a different handling between #MRI and #JRuby but today it has happened. 😉

EDIT: nevermind. I converted the references but I'm still open to feedback if you have any.

I'm surely doing something wrong, so I'm open in case you have any advice for me.

https://github.com/rails/marcel/actions/runs/18431055272/job/52518425738?pr=132

#TruffleRuby is affected too.

@headius it has been ages that I stumbled over a different handling between #MRI and #JRuby but today it has happened. 😉

EDIT: nevermind. I converted the references but I'm still open to feedback if you have any.

I'm surely doing something wrong, so I'm open in case you have any advice for me.

https://github.com/rails/marcel/actions/runs/18431055272/job/52518425738?pr=132

#TruffleRuby is affected too.

@headius it has been ages that I stumbled over a different handling between #MRI and #JRuby but today it has happened. 😉

EDIT: nevermind. I converted the references but I'm still open to feedback if you have any.

I'm surely doing something wrong, so I'm open in case you have any advice for me.

https://github.com/rails/marcel/actions/runs/18431055272/job/52518425738?pr=132

#TruffleRuby is affected too.