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https://issues.apache.org/jira/browse/NETBEANS-4595?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Bernard updated NETBEANS-4595:
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Attachment: testcase.zip
> exec-maven-plugin Java version different from maven-compiler-plugin Java
> version in NetBeans project
> ----------------------------------------------------------------------------------------------------
>
> Key: NETBEANS-4595
> URL: https://issues.apache.org/jira/browse/NETBEANS-4595
> Project: NetBeans
> Issue Type: Bug
> Components: projects - Maven
> Affects Versions: 12.0
> Environment: Windows 7
> Reporter: Bernard
> Priority: Critical
> Attachments: testcase.zip
>
>
> I start up the NetBeans IDE 12.0 with a system environment JAVA_HOME (1.8)
> lower than what the IDE uses (14).
> In the project properties, I have set the Build|Compile|Java Platform to JDK
> 14 (Default) as expected.
> The IDE output window of Maven execution seems to show that the project is
> run with JAVA_HOME for JDK 14, running project files this way.
> But the exec-maven-plugin fails with java.lang.UnsupportedClassVersionError:
> com/mycompany/Start has been compiled by a more recent version of the Java
> Runtime (class file version 55.0), this version of the Java Runtime only
> recognizes class file versions up to 52.0
> This seems to indicate that the the exec-maven plugin runs under 1.8 in the
> IDE, ignoring the IDE's own override setting of JAVA_HOME of 14. It appears
> to use the JDK as set in JAVA_HOME, because if I set JAVA_HOME to 14.0 before
> IDE startup then it works.
> I am looking for the correct way, the right places, to set the JDK for any
> project specifically, regardless of the JAVA_HOME setting that is active when
> the IDE starts.
> My case can be reproduced by running the IDE 12.0 with JDK 14.0 installed,
> but with JAVA_HOME set to 1.8. before IDE startup. I use the Maven project
> generated from the command at https://wicket.apache.org/start/quickstart.html
> - all set to defaults. The file to run is Start.java.
> This is important to me because I must open many different projects with
> different JDKs so it is not practical to re-start the IDE with different
> JAVA_HOME settings each time. As it is, it appears that my setting is poorly
> defined - I must be missing something.
> I know that there are potentially other solutions in maven like the
> Toolchains plugin. However, with all of that, I would lose IDE support which
> is letting the project properties dialog drive the JDK in use for everything.
> Plus I can already see that the IDE aims to do the right thing by overriding
> JAVA_HOME - for some reason this does not seem to be working and I think that
> this might be the bug.
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