It's mature delivered technology, in wide use. Any accurate comparison of the platforms should take all this into account. I spent the entire month of April deep in software development. If things go as I think they will, I'll spend May doing more development. The battles of January between Sun, Microsoft and Netscape seem like distant memories.
Delivery is less than the promise.
Java still is not a fixture in the web world. It could be that Java demands too much of the system, and may be too buggy to deliver excellent content. Of all the news sources on the net, they do it the best, I think. A summary of top stories. No password, no fee.