You got the error because after the tutorial was originally written, the JSP spec has been updated. You now *must* deploy the Servlet in the web.xml file in order for you to access it via a URL.
I have updated the tutorial to JSP's latest 2.1 spec and Tomcat 6.0.14. Please read the tutorial again and this time you will be able to successfully deploy and run the Servlet.
Error HTTP Status 404 the resources are not avaible Posted: 11 Feb 2009
I have done all things web.xml server.xml and ar per my thinking my system is configered as it have but i steel get the error and can not run servlet so plese help me i am using apache tomcat 6.0.18 & jdk1.6 & jre1.6 so plese help me