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https://issues.apache.org/jira/browse/MCOMPILER-427?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17193612#comment-17193612
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Michael Boyles commented on MCOMPILER-427:
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You are looking at the wrong page. That page describes how to use a JDK other
than the one Maven itself is running on, not how to target a lower version
while running on the same JDK.
There is already a page describing in detail what you need:
[https://maven.apache.org/plugins/maven-compiler-plugin/examples/set-compiler-source-and-target.html]
It is just one below the page you linked on the sidebar.
> Lack of guide for cross-compilation for JDK 9+
> ----------------------------------------------
>
> Key: MCOMPILER-427
> URL: https://issues.apache.org/jira/browse/MCOMPILER-427
> Project: Maven Compiler Plugin
> Issue Type: Improvement
> Reporter: Peter Lee
> Priority: Minor
>
> For JDK9+, we need the _release_ or _maven.compiler.target_ to specify the
> target jdk bytecode version. But this is not stated out in the website guide
> page :
> [https://maven.apache.org/plugins/maven-compiler-plugin/examples/compile-using-different-jdk.html]
> I think this should be stated here.
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