Both Eclipse and NetBeans are very good IDEs and they are used by a lot of (professional) developers. One is not clearly superior to the other. So you will not get a really useful answer if you ask "which one is superior", because the answers will be based on the subjective personal experiences and preferences of the people who will answer you.
Nobody can tell you which one works best for you. You'll have to discover that yourself by trying both out. [ January 04, 2008: Message edited by: Jesper Young ]