I'd start off with just a text editor until you feel confident with java. The problem with IDEs for me is that you already have a steep learning curve with learning a new language, and having to figure out an entirely new editing environment doesn't make that curve any less steep. I still do most of my java with just a text editor (vim)! But I've heard good things about eclipse - its free and open source, so I'd give it a shot. There's a comparison of five popular IDEs over at:
http://www.builderau.com.au/program/...9174040,00.htm
HTH
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Charlie Harvey's website - linux, perl, java, anarchism and punk rock:
http://charlieharvey.org.uk