Yes, I find if frustrating that Sun wants you to download their JavaDoc and extract it locally, as opposed to being able to just browse through it on their site. Like, wouldn't that be a reasonable service to offer?
I can download the JavaDoc myself, and I'd love to put it up on my site, but I think that's violation somehow of the copyright.
Anyways, JBoss seems to have it posted. Check it out online here without having to do a download: