Useful Resource #1 - Jar Finder
If you are a java developer working on web application using lot of open technologies, the first time you setup your application, I am sure when you try running it the first time, you would get into ClassNotFoundException one way or the other. Sometime it could be straightforward and you would be able to add the necessary jar files that would fix the problem, but most of the time you would have never heard about the class that the exception says it is missing. Even if you fix one, that would trigger another one and by the time you fix all of it, this whole thing would have eaten up a lot of time. Here is a really cool site called Jar Finder, that can help you solve this, and identify the jar that has the class that’s missing and a link that can take you to where you can get it.
