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https://issues.apache.org/jira/browse/MCOMPILER-545?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Slawomir Jaranowski updated MCOMPILER-545:
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Fix Version/s: waiting-for-feedback
> maven.compiler.target seem to be ignored
> ----------------------------------------
>
> Key: MCOMPILER-545
> URL: https://issues.apache.org/jira/browse/MCOMPILER-545
> Project: Maven Compiler Plugin
> Issue Type: Bug
> Affects Versions: 3.11.0
> Reporter: Mihai Nita
> Priority: Major
> Fix For: waiting-for-feedback
>
>
> Create a very simple maven project:
> {code:java}
> mvn archetype:generate \
> -DgroupId=com.mycompany.app \
> -DartifactId=my-app \
> -DarchetypeArtifactId=maven-archetype-quickstart \
> -DarchetypeVersion=1.4 \
> -DinteractiveMode=false{code}
> See the guide at "Maven in 5 Minutes"
> [https://maven.apache.org/guides/getting-started/maven-in-five-minutes.html]
>
> Change folder:
> {code:java}
> cd my-app {code}
> Edit the `pom.xml` and change the JDK version to 8 (the newly created project
> uses 7):
> {code:java}
> <maven.compiler.source>1.8</maven.compiler.source>
> <maven.compiler.target>1.8</maven.compiler.target> {code}
> Compile:
> {code:java}
> mvn clean compile {code}
> Check the version of the class file generated:
> {code:java}
> javap -v target/classes/com/mycompany/app/App.class | grep "major
> version"{code}
> If you compile with various jdk versions you will get different results: *
> JDK 8 => major version: 52
> * JDK 11 => major version: 55
> * JDK 17 => major version: 61
> So this is not work as one would expect (and as documented).
> It looks like a bug in the {{{}maven-compiler-plugin{}}}.
>
> The behavior is the same even if we update the plugin to latest version
> (3.11.0).
> (the app generated by the archetype uses 3.8.0, so the bug is not new)
> Or if we use `8` for the version (instead of `1.8`).
> [https://maven.apache.org/plugins/maven-compiler-plugin/examples/set-compiler-release.html]
>
> Changing the version *works* if specified in the plugin using
> {{<configuration>}} in {{{}<plugin>{}}}.
> [https://maven.apache.org/plugins/maven-compiler-plugin/examples/set-compiler-source-and-target.html]
>
> This show that {{maven.compiler.target}} does not work.
> I suspect (but didn't test) that is also true for {{maven.compiler.source}}
>
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