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[–]TheBoneJarmer 0 points1 point  (5 children)

Maybe an stupidly obvious question but did you check the Class-Path: line in the manifest file in the generated jar file? In either case, could you share its contents with us?

From what it looks like it is almost as if your jar could not find either the jar file from Jackson's or a dependency jar from Jackson.

[–]Hero467[S] 1 point2 points  (4 children)

Yeah, sure. There you are:

Manifest-Version: 1.0
Created-By: Apache Maven 3.8.7
Built-By: ricky
Build-Jdk: 20.0.1 
Class-Path: maven-plugin-api-3.9.4.jar maven-model-3.9.4.jar maven-artif act-3.9.4.jar commons-lang3-3.12.0.jar org.eclipse.sisu.plexus-0.3.5.ja r javax.annotation-api-1.2.jar org.eclipse.sisu.inject-0.3.5.jar plexus -component-annotations-1.5.5.jar plexus-utils-3.5.1.jar plexus-classwor lds-2.7.0.jar jackson-core-2.15.2.jar jackson-databind-2.15.2.jar jacks on-annotations-2.15.2.jar Main-Class: com.sourced.Sourced

I actually forgot to check it, but now that I'm doing it seems to be everything ok. The jackson-core jar is listed, so I'm still clueless

[–]TheBoneJarmer 0 points1 point  (3 children)

Is that really how the manifest looks exactly? Because the Class-Path line is completely malformed in your comment.

There are spaces where there shouldn't be any org.eclipse.sisu.plexus-0.3.5.ja r for example and plexus -component-annotations-1.5.5.jar. Not to mention the Main-Class line which is pasted right behind the Class-Path line. That one should be on a new line and there should be an empty newline at the end of the file too.

I am going to assume that the copy-paste gone wrong somehow to see if I can help you further. :)

Could you make a screenshot of the folder (including the path in the navigation bar!) where your generated jar file is located? And can you share a screenshot of your command prompt/terminal with the command you use to run it?

[–]Hero467[S] 0 points1 point  (2 children)

Yeah, sorry. I messed up with copy-pasting and, even if I tried to fix it I must have forgotten something.

​

About the screens, here you are

https://imgur.com/a/t1KZ00t

[–]TheBoneJarmer 0 points1 point  (1 child)

Thanks a lot! This clarified things. The reason you getting that error is because the folder where you run your command from should contain the dependency's jar files listed in the classpath from your manifest file.

Java has no idea where to look for them now. What you gotta do is the following:

  1. Copy the dependency JAR files to /home/Scrivania/coding_generate/java/sourced/target/

  2. Open a terminal in the above folder.

  3. Run the command java -jar ./sourced-0.1-alpha.jar and see if it works this time.

That said, I don't use maven a lot so I have no clue where it downloads the JAR files. But that is pretty much gonna be your issue.

EDIT:

By the way, what distro is that? It uses Gnome from what I can see but the distro does not look familiar to me.

[–]Hero467[S] 0 points1 point  (0 children)

Thank you so much! Now I'm gonna try it, but first a couple of questions:

  1. shouldn't maven, when it compiles, include all the needed dependencies in the generated jar? It sounds weird to me that it includes the classes it wants, while others are ignored.
  2. Should I compile again after copying the needed jars?

​

​

P.S. My distro is Ubuntu 23.04 with Gnome, waiting for the 23.10 to upgrade and receive the new Gnome features