Delivering a single jar with a Maven project

Question

I want to deliver a single .jar file to my clients, but my project is currently built with Maven, and I have several modules that generate a single .jar each.

I know nesting different .jar files is not a great idea, so I am not sure how can I achieve this.

Any ideas?

Answer 1

If you really want to go this direction, there are several ways to do that:

• with the Maven Assembly Plugin and maybe the jar-with-dependencies predefined assembly descriptor (that will unpack dependencies)
• with the Maven Shade Plugin (similar to the above one but gives more flexibility)
• with the Maven One-Jar Plugin (that uses One-JAR and its custom classloader to allow nesting of JARs)

Depending on your exact requirements and constraints, you might prefer one or the other.