Windows users reporting an old JDK version is being picked up during Maven build

[JavaJoeS]

When a windows user builds with java using the installed eclipse JDK-21 and does a maven build a default older system JDK is picked up and causes failures. Previous Eclipse version 2024-12 did not have this behavior. I am going to try and get more detailed information from all the users complaining. I do not know exact version of the Windows OS that are in use, only that its not just one single version. No Unix, mac or other os users have reported problem. From my understanding, the adoptium JDK bundled with 2025-03 should be used when you first start up eclipse. Users report that after they had created a maven project and attempted to run their pom.xml/build their project that they were seeing an older system JDK being used during the maven launch in the build process. Curiously, when they fall back to previous 2024-12 they report it works as it had in all previous releases, which is to run the adoptium that is bundled with eclipse during the maven launch/build.

[mickaelistria]

Please open an issue with detailed steps to reproduce.

[merks]

As I assumed you are using m2e and should go here for issues you notice with that what m2e is doing.

https://github.com/eclipse-m2e/m2e-core

[JavaJoeS]

@merks Thanks much. I will take it over to M2E folks. However, Im thinking that this may be more of a result of some changes overarching. I dont have enough info from users yet to get the complete picture. I only know they are describing it works in 2024-12 and picks up the adptium JDK without them altering any options. SHould be same in 2025-03 but its not.

[iloveeclipse]

I assume it is related to eclipse-jdt/eclipse.jdt.debug#654 change. You could either check if your users have one from listed JVM's or ask them to disable automatic JVM detection:

[JavaJoeS]

@iloveeclipse Wow, thank you much. SOunds like this may be it. Is there a way within the eclipse.ini to disable the auto JVM detection?
I have hundreds of users that I try and support. No other OS is affected. I would guess 40% user base are some flavor of unix and some mac, perhaps other os too. Its ONLY windows users so far.

[iloveeclipse]

@JavaJoeS : you can disable it in various ways: via environment variable, system property or platform preference.
See
https://github.com/basilevs/eclipse.jdt.debug/blob/b2612fe7538c5a154a989edc14dcf9677c0235a0/org.eclipse.jdt.launching/launching/org/eclipse/jdt/internal/launching/DetectVMInstallationsJob.java#L244-L256