[keefe]

discriminating libraries like that is one of those skills, imho...

I think having a deep understanding of the most useful libraries is powerful : maven, OSGi, Jetty, ActiveMQ, HttpClient, Hadoop, Velocity, other popular projects on apache, GSON, JUNG, JUnit (in depth)...

[JQuinn]

Thank you for these suggestions. The only one that even looks remotely similar (yes I am still a novice when it comes to other libraries) is GSON, due to my work with JSON at work.

[manishsharan]

Dude, you are gonna scare away the rookies . We need fresh blood !