other than framework and java syntax, what else is a must to master?

Question

Other than learning java, spring, hibernate, servlets, jsp's, how to use eclipse/netbeans, databases like mysql/oracle/postgresql, JMS, JUnit, etc.

What other skills are essential?

Coming from a MS background, and I am just a little overwhelmed by all the things going on in the java world! (btw, you guys have TONS of dlls also, a big eye-opener for me in my java pursuits)

Other things I can come up with so far are solid linux skills, maybe how to use a mac.

Other than that, there are so many of these tools that I see referenced, which so far I am pretty much clueless how to use:

• ant
• maven

what else is there that are common or important to know?

Answer 1

• Debugging techniques
• XML technologies (SAX, DOM, XPath)
• How to find libraries that do what you're attempting to accomplish, rather than writing them yourself.