[jira] [Commented] (MJAR-238) Allow setting of module main class

["Hudson (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MJAR-238?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16744066#comment-16744066 ] 

Hudson commented on MJAR-238:
-----------------------------

Build succeeded in Jenkins: Maven TLP » maven-jar-plugin » master #55

See https://builds.apache.org/job/maven-box/job/maven-jar-plugin/job/master/55/

> Allow setting of module main class
> ----------------------------------
>
>                 Key: MJAR-238
>                 URL: https://issues.apache.org/jira/browse/MJAR-238
>             Project: Maven JAR Plugin
>          Issue Type: Improvement
>         Environment: Java9 build 9+176, MacOS
>            Reporter: Machiel Groeneveld
>            Assignee: Robert Scholte
>            Priority: Minor
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> When a Java9 module is created using the maven-jar plugin, setting the manifest/mainclass does not set the module main class. Therefore the module is not executable without specifying the main class. Executing the module using java -m domain.app gives the following error:
> _module jigsaw.app does not have a MainClass attribute_
> According to the module specification a module (jar) can have a main class set. If I understand correctly it's inside the module-info.class as a property called ModuleMainClass
> When using the JDK9 jar command it will update the jar and the module-info.class.
> {noformat}
>   -e, --main-class=CLASSNAME The application entry point for stand-alone
>                              applications bundled into a modular, or executable,
>                              jar archive
> {noformat}
> I guess it would make sense to have this as a separate configuration item since the mainclass entry in the manifest file is not needed in 'module mode' and vice versa.
> If this is a duplicate of another issue, please close this one, I couldn't find any existing issues related to this.



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