Hi,

As I said already, I'm mostly concerned with possible real issues with "this-escape", even with JDK 17 that needs backporting, and maybe a lot of work before.

When looking at 
https://en.wikipedia.org/wiki/Java_version_history#toc-Java_17_updates there is 
indeed some free time for JDK 17.
But there is a problem using it as target, ie in main build.gradle, like

   java {
        sourceCompatibility(JavaVersion.VERSION_21)
        targetCompatibility(JavaVersion.VERSION_17)
   }

because of 
https://docs.oracle.com/en/java/javase/21/docs/specs/man/javac.html#option-target

<<Note: The target release must be equal to or higher than the source release>>

Sincerely I still see no problem using 21 for trunk we could even release using 
17 for source and target.

Jacques


Le 10/11/2025 à 14:54, Nicolas Malin a écrit :
From my side, I think it's a good to clean OFBiz java code to support Java 21 
with all new alert raise and let it on java 17 for the target src.

We know that it's minimal on java 17 and completely compliant on java 21. Each 
administrator can select the correct jre for is infrastructure.

In my mind when I started this subject it's more "are we java21 compliant" to 
prepare the future :)

Nicolas

On 10/11/2025 10:34, Jacques Le Roux wrote:
Hi,

There is something I did not speak about, the new "this-escape" warning.

Here is a good and simple explanation about it:
https://stackoverflow.com/questions/77191858/what-is-a-this-escape-warning-and-how-do-i-deal-with-it#77191859

OFBiz contains 97 such possible issues. To hide them, for the moment in build. gradle I put in “options.compilerArgs << '-Xlint:-this-escape'” into _« tasks_._withType_(_JavaCompile »_

As this can allow the compiler to do anything it wants: <<In the C programming community, undefined behavior may be humorously referred to as "nasal demons", after a comp.std.c post that explained undefined behavior as allowing the compiler to do anything it chooses, even "to make demons fly out of your nose">> https://en.wikipedia.org/wiki/Undefined_behavior

We need to verify when it's really an issue and then fix it.

Most of the work remains and even the fix should be backported to the release 
branch. That's also why we should not wait.

HTH

Jacques

Le 09/11/2025 à 12:10, Jacques Le Roux a écrit :
Hi,

About CI, it's possible to build trunk on GH actions by changing gradle.yaml 
from JDK 17 to 21.
Then also BB should be changed the same.

After a 1st glane I'm still unsure about demos that now use Docker.
I see no Java version reference in docker-image.yaml. IIRR it uses the jar 
build by gradle.yaml.
 The VM still uses JDK 11 by default. Only JDK 17 is also installed

Looking for "17" in source we get 22 774 occurrences.
A lot are unrelated, but still 1110 for " 17" (" 17 " only 1 unrelated).
Apart changes in https://github.com/apache/ofbiz-framework/pull/917/files for " 
17" in source we have also:

devcontainer.json related to https://issues.apache.org/jira/browse/OFBIZ-13151
INSTALL
README.adoc
dependencies.gradle

I did not look into the 1110 others that are into applications, framework, 
themes and plugins (with also patches I have locally) code.

Conclusion, it seems easy to decide to go with JDK 21 for trunk.

Jacques

Le 07/11/2025 à 15:58, gaetan.chaboussie a écrit :
Hello all. As pointed out by Eugen [1], a question rises from the subjet of 
Java21 update:

Of 'source' and 'target' java versions, wich one(s) should be updated ?

I for myself don't have a strong opinion on the matter.

Regards

Gaetan.

[1] https://github.com/apache/ofbiz-framework/pull/917#issuecomment-3493565728

On 10/27/25 11:21, gaetan.chaboussie wrote:
Done nicolas :
https://issues.apache.org/jira/browse/OFBIZ-13306

Gaetan

On 10/3/25 15:31, Jacques Le Roux wrote:
Hi Nicolas,

That's a good idea. Another would be to upgrade Gradle, because for instance of 
bottom of https://issues.apache.org/jira/browse/OFBIZ-13296

Jacques

Le 03/10/2025 à 14:31, Nicolas Malin a écrit :
I will open an issue and try to move forward on it ? :)

At this time only OFBiz test doesn't on 21 works.

Nicolas

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