when I start the application from tomcat manager it does not start...
and gives context error
If I remove the servlet entry from web.xml my application runs
properly..
my web.xml is;
<?xml version="1.0" encoding="ISO-8859-1"?>

<!DOCTYPE web-app
   PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
   "http://java.sun.com/dtd/web-app_2_3.dtd">

<web-app>
<servlet>
<servlet-name>HelloServlet</servlet-name>
<servlet-class>HelloServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>HelloServlet</servlet-name>
<url-pattern>Hello</url-pattern>
</servlet-mapping> -->
</web-app>

Why is this happening?