JDK 21 support

[johanjanssen]

Hi, I know I'm quite early :), but is support for JDK 21 already planned?

I ran the following example https://github.com/johanjanssen/JavaHiddenGems/tree/main/Examples/equalsverifier on an ea version of Java 21. It uses EqualsVerifier https://jqno.nl/equalsverifier/ which in turn uses Byte Buddy and produces the following error:

-> Java 21 (65) is not supported by the current version of Byte Buddy which officially supports Java 20 (64) - update Byte Buddy or set net.bytebuddy.experimental as a VM property

[raphw]

For now, please set -Dnet.bytebuddy.experimental=true

Then it will work. Proper support is coning soon.

[johanjanssen]

Yes, I'm using that now indeed. Thanks a lot for working on supporting Java 21 and the great work on Byte Buddy in general!

[kennymacleod]

With the release of JDK 20 yesterday, 21 LTS is next up. Do you have an updated target release of byte-buddy?

[raphw]

I'm waiting a bit on ASM here, unfortunately. The day they release support, I'll follow.

[kennymacleod]

ASM 9.5 is out in the wild. Aww yeah.

[raphw]

Releasing as we speak.

[ascopes]

@raphw random question, hope you don't mind me asking here.

Would specifying this flag enable JDK 21 build support for Mockito, given it uses ByteBuddy internally?

[raphw]

It is supported in the latest Byte Buddy version. Mockito should have picked that up?

[bergerdenes]

Java 21 was out a few weeks ago, please give an update on when it will be officially supported. Thanks!

[raphw]

It's been supported for a while, are you experiencing issues?

[OLibutzki]

@raphw The milestone assigned to this issue is misleading. As far as I can see it's not included in 1.12.22?

ASM has been updated with 1.14.3, so this is the version containg Java 21 support, right?

[alphaho]

@OLibutzki Cross checking the release timeline and the discussion in this issue, I think the JDK 21 support is from version 1.14.3

[JavedAkramGit]

Hi, I have been facing an issue related to the upgraded version of Byte-Buddy(1.14.3) while hosting keycloak on my mac -> this was the issue when i tried to start it -> ERROR: java.util.concurrent.ExecutionException: org.hibernate.bytecode.enhance.spi.EnhancementException: Failed to enhance class org.keycloak.models.jpa.entities.ClientScopeAttributeEntity
ERROR: org.hibernate.bytecode.enhance.spi.EnhancementException: Failed to enhance class org.keycloak.models.jpa.entities.ClientScopeAttributeEntity
ERROR: Failed to enhance class org.keycloak.models.jpa.entities.ClientScopeAttributeEntity
ERROR: Java 21 (65) is not supported by the current version of Byte Buddy which officially supports Java 20 (64) - update Byte Buddy or set net.bytebuddy.experimental as a VM property
So i tried to upgrade the version of Byte buddy by downloading the latest version and moving it to the lib folder under keycloak but still facing the same issue.Please assist

[raphw]

I assume you are still using an outdated version.

[JavedAkramGit]

I updated it to 1.14.3 but faced a similar issue. Please assist in updating it in another way compatible with KeyCloak

[ascopes]

The latest version of Mockito is 5.x, so if you are on 1.x then that is very outdated

[JavedAkramGit]

Not sure how am I gonna incorporate mockito while hosting keycloak on my local. The issue is that apparently keycloak requires an updated version of Byte-Buddy and the latest version from maven is 1.14 har file. Please assist with regards to that

[raphw]

You should be able to just update Byte Buddy which is published to Maven Central.

[antemo]

We are using Mockito 5.8.0 which brings in bytebuddy version 1.14.10
When trying to run tests on JDK 21 we get same error as mentioned before:

Caused by: java.lang.IllegalArgumentException: Java 21 (65) is not supported by the current version of Byte Buddy which officially supports Java 20 (64) - update Byte Buddy or set net.bytebuddy.experimental as a VM property

How can we fix or avoid this issue?

[ascopes]

@antemo in my builds, I specify that flag on the Maven argline as a JVM property for the test runner.

<properties>
  <argLine>-Dnet.bytebuddy.experimental=true</argLine>
</properties>

I have stuff building on JDK 21 and JDK 22 EA, and haven't come across this issue.

I was meaning to remove that flag as it was a workaround from a while back but might leave it in if it is keeping builds stable.

[raphw]

Have you checked with your dependency manager if the version of Byte Buddy that is used is the right one? If another library then Mockito uses Byte Buddy, a different version might be resolved.

[listeningALF]

What do I have to do exactly?
I am using an Macbook Pro and am working in IntelliJ.

For now, please set -Dnet.bytebuddy.experimental=true

Then it will work. Proper support is coning soon.

[ascopes]

@listeningALF the JVM arguments for your test runner.

No idea about Gradle. In Maven you can just set a property called argLine.