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Posted to issues@maven.apache.org by "gunter zeilinger (Jira)" <ji...@apache.org> on 2019/09/08 18:40:00 UTC
[jira] [Comment Edited] (MJAR-238) Allow setting of module main
class
[ https://issues.apache.org/jira/browse/MJAR-238?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16925227#comment-16925227 ]
gunter zeilinger edited comment on MJAR-238 at 9/8/19 6:39 PM:
---------------------------------------------------------------
Seems it works (only) with
{{maven.compiler.fork = true}}
was (Author: gunterze):
Seems is works (only) with
{{maven.compiler.fork = true}}
> 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: Enrico Olivelli
> Priority: Minor
> Fix For: 3.1.2
>
> 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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