Wow, I finally bought JRebel for my Java development. It’s realy a boost for development if you need to restart your app server often. In my case I save 20 minutes every day, because of the hot deployment features of JRebel. I heard that some people use JRebel in production environments. I’d like to see this in real life, but I can’t imagine that it wouldn’t lead into troubles.
If you want to try JRebel, a 30 day trial is available on their website.