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Editorial Team
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Asked: 2026-05-23T15:18:32+00:00

I create a simple maven 109 project – maven-archetype-quickstart . Then, add to pom.xml

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I create a simple maven 109 project – maven-archetype-quickstart.
Then, add to pom.xml a dependency to derby.
When I run mvn dependency:tree, I see, that the dependency parsed correctly:
[INFO] \- org.apache.derby:derby:jar:10.8.1.2:compile.
But when I see the package generated by mvn package, it has only 3.2kB and the dependency is not there. Why? How it works?

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1 Answer

  1. Editorial Team

    Because most people don’t want all dependencies in their JAR by default. Imagine the people who want to use your artifact but a different version of derby.

    To create an “ueber JAR” (i.e. a JAR which contains everything necessary to run it), use the Maven assembly plugin (search for “Creating an Executable JAR”).

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