Fix main class name

[tobiasdiez]

Reverts ba60cbe. According to https://github.com/java9-modularity/gradle-modules-plugin#using-the-application-plugin this is the correct way to specify the main class name.

@davidemdot what was the reason for your change?

---

• Change in CHANGELOG.md described
• Tests created for changes
• Manually tested changed features in running JabRef
• Screenshots added in PR description (for bigger UI changes)
• Ensured that the git commit message is a good one
• Check documentation status (Issue created for outdated help page at help.jabref.org?)

[davidemdot]

@tobiasdiez, I did it after a Java 11 test under Linux, due to a related error. Not really sure about, but if I am not wrong, @koppor got the same error under Windows.

Java and OS versions

deiv ~/new_jabref $ java -version
java version "11.0.4" 2019-07-16 LTS
Java(TM) SE Runtime Environment 18.9 (build 11.0.4+10-LTS)
Java HotSpot(TM) 64-Bit Server VM 18.9 (build 11.0.4+10-LTS, mixed mode)

deiv ~/new_jabref $ uname -mrs
Linux 5.2.9-arch1-1-ARCH x86_64

You can check the logs hereunder:

Gradle's run with [mainClassName = "$moduleName/JabRefLauncher"]

deiv ~/new_jabref $ ./gradlew run
> Task :buildSrc:compileJava NO-SOURCE

[...]

> Configure project :
Found module name 'org.jabref'

[...]

> Task :run FAILED
WARNING: Unknown module: test2 specified to --patch-module
WARNING: Unknown module: test3 specified to --patch-module
WARNING: Unknown module: test specified to --patch-module
Error: Could not find or load main class JabRefLauncher in module org.jabref

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':run'.
> Process 'command '/usr/lib/jvm/java-11-jdk/bin/java'' finished with non-zero exit value 1

[...]

BUILD FAILED in 2s
10 actionable tasks: 2 executed, 8 up-to-date

Gradle's run with [mainClassName = "org.jabref.JabRefLauncher"]

deiv ~/new_jabref $ ./gradlew run
> Task :buildSrc:compileJava NO-SOURCE

[...]

> Configure project :
Found module name 'org.jabref'

> Task :generateBibtexmlSource UP-TO-DATE

[...]

> Task :run
No module was provided for main class, assuming the current module. Prefer providing 'mainClassName' in the following format: '$moduleName/a.b.Main'

[...]

BUILD SUCCESSFUL in 18s
10 actionable tasks: 2 executed, 8 up-to-date

[davidemdot]

I have read your link, and then tried with mainClassName = "$moduleName/org.jabref.JabRefLauncher".

It works fine, and did not get this message:

No module was provided for main class, assuming the current module. Prefer providing 'mainClassName' in the following format: '$moduleName/a.b.Main'

Hope this helps you!

[tobiasdiez]

Thanks @davidemdot, that worked indeed!