From the course: Introducing Maven
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Uber JARs
- [Instructor] An Uber Jar is a special build and packaging routine that has more to do with dependencies than packaging or build. So, what is an Uber, or a shaded JAR? In my mind's eye, an Uber JAR is a WAR file to run outside of a web container. Now, while that isn't exactly what it is, it's a great analogy, because just like a WAR file, a shaded JAR contains all of the source code that you write for your application. In addition, also like a WAR file, it contains all the dependencies that you need to run your application. Unlike a WAR file, however, it can be executable. Now, what this means is that you can actually package your application in a shaded JAR and hand it to somebody to run, and they don't have to do anything to bring the dependencies onto the class path, and you can even package in a shaded JAR something like embedded Tomcat to run a web application as a JAR file. Before we build our shaded JAR, I want to run a command to show you what's included in the standard JAR…
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