What is `dependency-reduced-pom.xml` file which created when calling maven package command?

Question

I\'m following maven tutorial from springsource here, and after 1) adding joda-time dependency , and 2) calling mvn package commmand, we get the b

Answer 1

copied from What is the purpose of dependency-reduced-pom.xml generated by the shade plugin?:

Well, if you have a module A with X dependencies, and shade some of them in a specific JAR (A-shaded.jar), then you won't need those shaded dependencies if you want to depend on A-shaded.jar instead of A.jar. So the plugin creates a pom.xml containing only the Y non-shaded dependencies.