Note that design is wrongly spelled. What should a normal server return? A 404 right? In a normal world yes. But you know SUN and the way they do standards...
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"> <html><head> <title>500 Internal Server Error</title> </head><body> <h1>Internal Server Error</h1> The server encountered an internal error or misconfiguration and was unable to complete your request.<p> Please contact the server administrator, webmaster@oreillynet.com and inform them of the time the error occurred, and anything you might have done that may have caused the error.<p> More information about this error may be available in the server error log.<p> </body></html>
Notice that the server administrator is O-Reilly, SUN is not competent enough to manage a web server? That could explain many things about JSPs...