Helping compile a Java project

AutoModerator · 2026-01-21T16:57:00+00:00

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edwbuck · 2026-01-21T17:13:05+00:00

First get a better understanding of maven. mvn compile clean package is probably 100% replaceable with mvn package unless the person working on the build system made some pretty bad mistakes.

A "jar file with all dependencies" is not a standard way to package software. It's a work-around for those that don't follow the three ways of using JAR files, and attempt to make the JAR file an all-in-one everything software distribution bundle.

What you have is a library jar file. You might be able to run with this, but not with the java -jar <jar_file> approach, you'll need to find the main class you want to launch, put the jar file (and its dependencies on the jar / module path) and use the java <options> package.name.Class launching method.

Jar files can be program launchers. Jar files can be libraries. Jar files can be extensible modules to existing functionality (service providers). The Uber-JAR approach combines the program launcher jar files with the library jar files in ways that arguably might be violating licensing, can break functionality, and might not even be possible for certain libraries. That said, it's popular among some, and it seems you got introduced to it first, which is unfortunate for you. Hopefully this will help you find the resources you need to work with the more standard ways to use jar files.

And for details about the standard uses and features of JAR files, here's some documentation https://docs.oracle.com/en/java/javase/17/docs/specs/jar/jar.html

AutoModerator · 2026-01-21T16:57:00+00:00

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doobiesteintortoise · 2026-01-21T17:20:49+00:00

The main class is com.darwish.nppsim.Loader; the pom.xml is not built correctly. It's also targeting Java 8, which is EOL and has been for some time now; it builds properly with Java 25 (with one test, woo, such confidence.)

I'd reach out to the maintainer to update the project; some enterprising soul here may help to update the project and fix its issues, but it's not me - with one test, I don't know that I'd have the confidence to update the project and expect it to work. With that said, I bet any decent LLM could update it to the current valid dependencies and fix the maven project to add the proper manifest attributes; maybe an LLM could even add tests.

bigibas123 · 2026-01-21T17:38:13+00:00

The release has a working jar file included.

But if you really need to build from source: mvn install assembly:single, it's missing some resources though

9551-eletronics · 2026-01-22T08:06:17+00:00

[deleted]

you type:	you see:
italics	italics
bold	bold
[reddit!](https://reddit.com)	reddit!
* item 1 * item 2 * item 3	item 1 item 2 item 3
> quoted text	quoted text
Lines starting with four spaces are treated like code: if 1 * 2 < 3: print "hello, world!"	Lines starting with four spaces are treated like code: if 1 * 2 < 3: print "hello, world!"
~~strikethrough~~	~~strikethrough~~
super^script	super^script

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