sorry - wrong link!
Sorry - I misspelled the link. Here is the right one
Here's a tip for those who seek an alternative to JBuilder
Checkout NetBeans. It's an IDE that has a lot of good features and it is developed under an open source license (SPL). It works under both Windows and Linux. I have used for about a month and the only thing that I personally think is missing is good support for projects. It includes Tomcat so you can run your JSP/servlets directly from the IDE.