📢 AssertJ 3.27.5 has been released!
This 🛠️ upgrades ByteBuddy to its latest version to ensure smooth compatibility with Java 25 ☕
Happy assertions!
github.com/assertj/asse...
This 🛠️ upgrades ByteBuddy to its latest version to ensure smooth compatibility with Java 25 ☕
Happy assertions!
github.com/assertj/asse...
Release v3.27.5 · assertj/assertj
⚡ Improvements
Core
ByteBuddy in AssertJ 3.27.4 not compatible with Java 25 #3946
🔨 Dependency Upgrades
Core
Upgrade to Byte Buddy 1.17.7 #3947
Upgrade to JUnit BOM 5.13.4 #3947
Guava
Upgrade ...
github.com
September 19, 2025 at 6:56 AM
📢 AssertJ 3.27.5 has been released!
This 🛠️ upgrades ByteBuddy to its latest version to ensure smooth compatibility with Java 25 ☕
Happy assertions!
github.com/assertj/asse...
This 🛠️ upgrades ByteBuddy to its latest version to ensure smooth compatibility with Java 25 ☕
Happy assertions!
github.com/assertj/asse...
Ever wondered who keeps Java’s bytecode ecosystem running? Marco talks with ByteBuddy creator Rafael Winterhalter about JVM internals, Mockito and Hibernate under the hood, legacy Java realities, and the human side of open-source sustainability.
Watch the full episode: https://youtu.be/AzfhxgkBL9s
Watch the full episode: https://youtu.be/AzfhxgkBL9s
December 10, 2025 at 3:05 PM
Ever wondered who keeps Java’s bytecode ecosystem running? Marco talks with ByteBuddy creator Rafael Winterhalter about JVM internals, Mockito and Hibernate under the hood, legacy Java realities, and the human side of open-source sustainability.
Watch the full episode: https://youtu.be/AzfhxgkBL9s
Watch the full episode: https://youtu.be/AzfhxgkBL9s
New deep-dive on The Marco Show!
🎥 Watch now: youtu.be/AzfhxgkBL9s
Marco sits down with @rafaelcodes.bsky.social (creator of ByteBuddy) to unravel JVM internals, bytecode instrumentation, Mockito and Hibernate internals, legacy Java realities, and the challenges of maintaining open source at scale.
🎥 Watch now: youtu.be/AzfhxgkBL9s
Marco sits down with @rafaelcodes.bsky.social (creator of ByteBuddy) to unravel JVM internals, bytecode instrumentation, Mockito and Hibernate internals, legacy Java realities, and the challenges of maintaining open source at scale.
December 10, 2025 at 3:01 PM
New deep-dive on The Marco Show!
🎥 Watch now: youtu.be/AzfhxgkBL9s
Marco sits down with @rafaelcodes.bsky.social (creator of ByteBuddy) to unravel JVM internals, bytecode instrumentation, Mockito and Hibernate internals, legacy Java realities, and the challenges of maintaining open source at scale.
🎥 Watch now: youtu.be/AzfhxgkBL9s
Marco sits down with @rafaelcodes.bsky.social (creator of ByteBuddy) to unravel JVM internals, bytecode instrumentation, Mockito and Hibernate internals, legacy Java realities, and the challenges of maintaining open source at scale.
Neu erschienen: blind-sehbehindert 3/2026 👁️
Themen der Ausgabe: digitale Barrierefreiheit, Frühförderung, Forschung und Teilhabe sowie der barrierefreie Lernroboter ByteBuddy.
👉 www.wbv.de/artikel/BSB2...
#Barrierefreiheit#wbv
Themen der Ausgabe: digitale Barrierefreiheit, Frühförderung, Forschung und Teilhabe sowie der barrierefreie Lernroboter ByteBuddy.
👉 www.wbv.de/artikel/BSB2...
#Barrierefreiheit#wbv
September 24, 2026 at 8:00 AM
Neu erschienen: blind-sehbehindert 3/2026 👁️
Themen der Ausgabe: digitale Barrierefreiheit, Frühförderung, Forschung und Teilhabe sowie der barrierefreie Lernroboter ByteBuddy.
👉 www.wbv.de/artikel/BSB2...
#Barrierefreiheit#wbv
Themen der Ausgabe: digitale Barrierefreiheit, Frühförderung, Forschung und Teilhabe sowie der barrierefreie Lernroboter ByteBuddy.
👉 www.wbv.de/artikel/BSB2...
#Barrierefreiheit#wbv
I've just fixed the last issue I had in my java instrumentation demo where a bytebuddy agent add tracing context into vertx's internal requests
What a great relief 🥳 !!
From -> to
What a great relief 🥳 !!
From -> to
December 14, 2024 at 4:19 PM
I've just fixed the last issue I had in my java instrumentation demo where a bytebuddy agent add tracing context into vertx's internal requests
What a great relief 🥳 !!
From -> to
What a great relief 🥳 !!
From -> to
Java Protip: Mockito failing on Java 21?
You need to add the latest ByteBuddy to your dependencies, because Mockito is on an outdated version.
(btw, use Temurin as your OpenJDK distribution)
You need to add the latest ByteBuddy to your dependencies, because Mockito is on an outdated version.
(btw, use Temurin as your OpenJDK distribution)
October 13, 2023 at 11:48 AM
Java Protip: Mockito failing on Java 21?
You need to add the latest ByteBuddy to your dependencies, because Mockito is on an outdated version.
(btw, use Temurin as your OpenJDK distribution)
You need to add the latest ByteBuddy to your dependencies, because Mockito is on an outdated version.
(btw, use Temurin as your OpenJDK distribution)
Bonne nouvelle aujourd'hui dans la boîte aux lettres ;)
Je viendrais vous parler de sécurité via un agent ByteBuddy à la conférence @devlille.fr 🎉
Je viendrais vous parler de sécurité via un agent ByteBuddy à la conférence @devlille.fr 🎉
April 2, 2026 at 7:19 AM
Bonne nouvelle aujourd'hui dans la boîte aux lettres ;)
Je viendrais vous parler de sécurité via un agent ByteBuddy à la conférence @devlille.fr 🎉
Je viendrais vous parler de sécurité via un agent ByteBuddy à la conférence @devlille.fr 🎉
Building a Durable Execution Engine With SQLite
Great article with accompanying Java code, that uses annotations, bytebuddy and sqlite to be able to resume jobs. Great to follow explanations plus code.
Great article with accompanying Java code, that uses annotations, bytebuddy and sqlite to be able to resume jobs. Great to follow explanations plus code.
Building a Durable Execution Engine With SQLite
Lately, there has been a lot of excitement around Durable Execution (DE) engines. The basic idea of DE is to take (potentially long-running) multi-step workflows, such as processing a purchase order…
www.morling.dev
November 26, 2025 at 1:56 PM
Building a Durable Execution Engine With SQLite
Great article with accompanying Java code, that uses annotations, bytebuddy and sqlite to be able to resume jobs. Great to follow explanations plus code.
Great article with accompanying Java code, that uses annotations, bytebuddy and sqlite to be able to resume jobs. Great to follow explanations plus code.
🥁📢 #jMolecules Integrations 0.28 is out (BOM 2025.0.0 RC4 and 2023.3.2), upgrading to Integrations 0.28. Configuration options for code generation and improvements in association handling. Grab it while it's 🔥! github.com/xmolecules/j...
Release 0.28 · xmolecules/jmolecules-integrations
⭐ New Features
Add configuration options for ByteBuddy code generation #323
🐞 Bug Fixes
Allow Association to be used from within a value object #322
🔨 Dependency Upgrades
Upgrade to Axon 4.11....
github.com
June 16, 2025 at 12:58 PM
🥁📢 #jMolecules Integrations 0.28 is out (BOM 2025.0.0 RC4 and 2023.3.2), upgrading to Integrations 0.28. Configuration options for code generation and improvements in association handling. Grab it while it's 🔥! github.com/xmolecules/j...
Nominating @rafaelcodes.bsky.social. I’ve learned a lot from his work on ByteBuddy and Jenesis.
May 29, 2026 at 2:26 PM
Nominating @rafaelcodes.bsky.social. I’ve learned a lot from his work on ByteBuddy and Jenesis.
#EasyMock 5.7.0 is out. Java 26 support, simplified `S s = mock()` and some bug fixes. Full release notes: github.com/easymock/eas...
Release 5.7.0 · easymock/easymock
Add Java 26 support where bytebuddy isn't using unsafe anymore.
Change log
Add mock() methods without parameters using varargs reification (#933)
Mock creation fails with JDK 26 and ByteBuddy 1.18...
github.com
August 22, 2026 at 5:33 AM
#EasyMock 5.7.0 is out. Java 26 support, simplified `S s = mock()` and some bug fixes. Full release notes: github.com/easymock/eas...
@ow2 has quietly released ASM 9.8 here: https://asm.ow2.io/versions.html. This version of the #bytecode manipulation library now support the EA versions of #jdk25. Ok @ApacheGroovy and @rafaelcodes (aka Mr #ByteBuddy) ... you know what to do. #java #jdk #openjdk #opensource
OW2 (@ow2@fosstodon.org)
95 Posts, 45 Following, 323 Followers · #opensource community for professional software
fosstodon.org
March 29, 2025 at 5:06 PM
@ow2 has quietly released ASM 9.8 here: https://asm.ow2.io/versions.html. This version of the #bytecode manipulation library now support the EA versions of #jdk25. Ok @ApacheGroovy and @rafaelcodes (aka Mr #ByteBuddy) ... you know what to do. #java #jdk #openjdk #opensource
🥁📢 #jMolecules 2023.3.1 is out shipping equals(…) and hashCode() generation for entities based on their identifiers! ☕️⚗️
Release 0.26 · xmolecules/jmolecules-integrations
⭐ New Features
Generate equals(…) and hashCode() for entities if not declared explicitly #315
🔨 Dependency Upgrades
Upgrade Spring Boot 3 to 3.4.4 #319
Upgrade ByteBuddy to 1.17.5 #318
Upgrade A...
github.com
April 16, 2025 at 6:47 AM
🥁📢 #jMolecules 2023.3.1 is out shipping equals(…) and hashCode() generation for entities based on their identifiers! ☕️⚗️
Cara, inclusive eu também acho que o ano que vem vai trazer muita melhoria nisso a partir do Java 25, tanto porque vai ser o primeiro "LTS" com Classfile API (openjdk.org/jeps/484), novas coisas no
Bytebuddy, @openrewrite.github.io e afins, como também tá tendo um monte de inovação na @graalvm.org
Bytebuddy, @openrewrite.github.io e afins, como também tá tendo um monte de inovação na @graalvm.org
openjdk.org
December 4, 2024 at 9:39 PM
Cara, inclusive eu também acho que o ano que vem vai trazer muita melhoria nisso a partir do Java 25, tanto porque vai ser o primeiro "LTS" com Classfile API (openjdk.org/jeps/484), novas coisas no
Bytebuddy, @openrewrite.github.io e afins, como também tá tendo um monte de inovação na @graalvm.org
Bytebuddy, @openrewrite.github.io e afins, como também tá tendo um monte de inovação na @graalvm.org
Pour ceux qui n'ont pas pu aller au @devlille.fr, le replay de mon talk "Remplacer le SecurityManager de Java par un agent grâce à ByteBuddy" est disponible: www.youtube.com/watch?v=uM9m...
[DevLille 2026] Remplacer le SecurityManager de Java par un agent grâce à ByteBuddy - Jour 2
Le SecurityManager de Java a été supprimé dans Java 24 !
Il permettait l'implémentation de vérifications de sécurité dans la JVM.
Chez Kestra, nous utilisions un SecurityManager pour assurer la…
www.youtube.com
June 25, 2026 at 7:27 AM
Pour ceux qui n'ont pas pu aller au @devlille.fr, le replay de mon talk "Remplacer le SecurityManager de Java par un agent grâce à ByteBuddy" est disponible: www.youtube.com/watch?v=uM9m...
Java Bytecode Wizardry: Supercharge Your Apps Without Touching the Source Code
#asm #bytebuddy #bytecode #java
dev.to/aaravjoshi/java-...
#asm #bytebuddy #bytecode #java
dev.to/aaravjoshi/java-...
Java Bytecode Wizardry: Supercharge Your Apps Without Touching the Source Code
Java bytecode instrumentation allows modifying compiled Java classes without changing source code. It uses Java Agents and libraries like ASM or ByteBuddy to manipulate bytecode at runtime. This technique enables adding features like timing, logging, profiling, and security checks to applications dynamically. It's powerful but should be used carefully to avoid complexity and performance issues.
dev.to
November 20, 2024 at 1:46 PM
Java Bytecode Wizardry: Supercharge Your Apps Without Touching the Source Code
#asm #bytebuddy #bytecode #java
dev.to/aaravjoshi/java-...
#asm #bytebuddy #bytecode #java
dev.to/aaravjoshi/java-...
Tem o ByteBuddy que é outra solução pra reflection. Também usei e muito tempo atrás, mas não é a única solução de geração de código. Há soluções bem mais rápidas hoje. Mas eu estava numa reunião hoje de manhã descendo o cacete em reflection e dizendo pra usar outras coisas. 😂😂😂
August 27, 2025 at 4:45 PM
Tem o ByteBuddy que é outra solução pra reflection. Também usei e muito tempo atrás, mas não é a única solução de geração de código. Há soluções bem mais rápidas hoje. Mas eu estava numa reunião hoje de manhã descendo o cacete em reflection e dizendo pra usar outras coisas. 😂😂😂
Na real na real, acho que o estado-da-arte em reflection em Java é o Bytebuddy, teria outra alternativa melhor? @rafaelcodes.bsky.social não só tem a abstração default em cima de ASM, como também um bridge em cima do novo Classfile API (JDK24+). E o Classfile está só melhorando com o tempo.
August 27, 2025 at 5:57 PM
Na real na real, acho que o estado-da-arte em reflection em Java é o Bytebuddy, teria outra alternativa melhor? @rafaelcodes.bsky.social não só tem a abstração default em cima de ASM, como também um bridge em cima do novo Classfile API (JDK24+). E o Classfile está só melhorando com o tempo.
Almost everyone working with the JVM has used his code directly or indirectly. Don't miss Marco Behler's fascinating interview with @rafaelcodes.bsky.social, the author of Byte Buddy, the JVM's best bytecode manipulation library:
www.youtube.com/watch?v=Azfh...
www.youtube.com/watch?v=Azfh...
Modern Bytecode Instrumentation with ByteBuddy – Rafael Winterhalter | The Marco Show
YouTube video by IntelliJ IDEA, a JetBrains IDE
www.youtube.com
December 10, 2025 at 9:24 PM
Almost everyone working with the JVM has used his code directly or indirectly. Don't miss Marco Behler's fascinating interview with @rafaelcodes.bsky.social, the author of Byte Buddy, the JVM's best bytecode manipulation library:
www.youtube.com/watch?v=Azfh...
www.youtube.com/watch?v=Azfh...
I would open the traces and look at the outliers. I've built rather detailed traces for our SaaS using standard java and bytebuddy for all BL and DAO methods; *some traces* would match and be sent to datadog for this period in our case. If still in doubt, I would look at the JFR runtime profiles
July 25, 2025 at 7:32 PM
I would open the traces and look at the outliers. I've built rather detailed traces for our SaaS using standard java and bytebuddy for all BL and DAO methods; *some traces* would match and be sent to datadog for this period in our case. If still in doubt, I would look at the JFR runtime profiles
dddとeventの参考に見るつもりがJQAssistant？Axon？ByteBuddy？(mockitoで見かけたことはある)と知らないものが増殖してる
December 5, 2024 at 11:44 AM
dddとeventの参考に見るつもりがJQAssistant？Axon？ByteBuddy？(mockitoで見かけたことはある)と知らないものが増殖してる
ByteBuddy is JVM-specific, so Mockk and Mockito do not work outside JVM, but there are new libraries like Mokkery or Mockative, that use compiler plugins or KSP for mock instances generation.
May 22, 2025 at 9:02 AM
ByteBuddy is JVM-specific, so Mockk and Mockito do not work outside JVM, but there are new libraries like Mokkery or Mockative, that use compiler plugins or KSP for mock instances generation.
The biggest challenge is creating the mock object
It should be of a certain type, but its method should behave as configured. Both Mockk and Mockito use under the hood ByteBuddy, a library that allows objects to be made at runtime. Here is how it can be used to create a fake instance of UserService.
It should be of a certain type, but its method should behave as configured. Both Mockk and Mockito use under the hood ByteBuddy, a library that allows objects to be made at runtime. Here is how it can be used to create a fake instance of UserService.
May 22, 2025 at 9:02 AM
The biggest challenge is creating the mock object
It should be of a certain type, but its method should behave as configured. Both Mockk and Mockito use under the hood ByteBuddy, a library that allows objects to be made at runtime. Here is how it can be used to create a fake instance of UserService.
It should be of a certain type, but its method should behave as configured. Both Mockk and Mockito use under the hood ByteBuddy, a library that allows objects to be made at runtime. Here is how it can be used to create a fake instance of UserService.
Spannendes interview für Menschen die irgendwas mit Java machen werden mit der Library schon etwas direkt oder indirekt zutun haben.
www.youtube.com/watch?v=Azfh...
www.youtube.com/watch?v=Azfh...
Modern Bytecode Instrumentation with ByteBuddy – Rafael Winterhalter | The Marco Show
YouTube video by IntelliJ IDEA, a JetBrains IDE
www.youtube.com
December 11, 2025 at 8:32 AM
Spannendes interview für Menschen die irgendwas mit Java machen werden mit der Library schon etwas direkt oder indirekt zutun haben.
www.youtube.com/watch?v=Azfh...
www.youtube.com/watch?v=Azfh...