This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
Well, they're interfaces, so the only differences are the names and signatures of the methods. Iterator has shorter method names, which don't clutter your code as much, and it has the "remove()" method, which Enumeration lacks. That's it.