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https://issues.apache.org/jira/browse/GROOVY-11105?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17734148#comment-17734148
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Vladimir Sitnikov commented on GROOVY-11105:
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{quote} The release option is an alias for setting target and bootclasspath
options in javac{quote}
I am afraid it is not just an alias.
OpenJDK 17 can target Java 8 even in the case Java 8 is not present on the
build machine. One can't easily have "Java 8 bootclasspath for javac" when Java
8 is not installed.
I expect Groovy would need to recognize ct.sym file, and use it for
{{jdk-release}} option.
> Support jdk-release option for configuring the target JDK release when doing
> the compilation
> --------------------------------------------------------------------------------------------
>
> Key: GROOVY-11105
> URL: https://issues.apache.org/jira/browse/GROOVY-11105
> Project: Groovy
> Issue Type: New Feature
> Components: Compiler
> Affects Versions: 4.0.12
> Reporter: Vladimir Sitnikov
> Priority: Major
>
> See the motivation and description in Kotlin:
> [https://youtrack.jetbrains.com/issue/KT-29974/Add-a-compiler-option-Xjdk-release-similar-to-javacs-release-to-control-the-target-JDK-version]
>
> Sample code that requires {{jdk-release}} option for a proper compilation,
> and it could not be solved with "target bytecode version" alone.
> {code:java}
> import java.nio.ByteBuffer;
> ByteBuffer bb = new ByteBuffer();
> // it should compile to invokevirtual Buffer.flip()Ljava.nio.Buffer;
> // when compiling for Java 1.8 since Java 1.8 does not have ByteBuffer flip()
> override in ByteBuffer
> // However, if the build uses JDK17 for execution, then it contains
> ByteBuffer flip() override,
> // and Groovy would compile it to invokevirtual
> ByteBuffer.flip()Ljava.nio.ByteBuffer
> // which would fail to execute in Java 1.8
> bb.flip();
> {code}
> See https://www.morling.dev/blog/bytebuffer-and-the-dreaded-nosuchmethoderror/
> See https://stackoverflow.com/a/61267496/1261287
>
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