I’ll explain what an uber JAR is first because this underpins the shading explanation. Uber JAR An uber JAR is a JAR which contains the contents of multiple JARs (or, less commonly, multiple other JARs themselves) Your application will almost certainly use other packages and these packages might be provided as JARs. When using Maven … Read more
The shade:shade Mojo is quite well documented, here especially about the createDependencyReducedPom parameter, which will create that dependency-reduced-pom.xml file: maven-shade-plugin/shade-mojo.html#createDependencyReducedPom In short, this is quite useful if you intend to use that shaded JAR (instead of the normal JAR) as a dependency for another module. That dependency-reduced-pom.xml will not contain the JARs already present in … Read more
Uber JAR, in short, is a JAR containing everything. Normally in Maven, we rely on dependency management. An artifact contains only the classes/resources of itself. Maven will be responsible to find out all artifacts (JARs etc) that the project depending on when the project is built. An uber-jar is something that takes all dependencies, and … Read more