Error in running servlet

Question

hi,
i have written a servlet code and compiled it successfully. But when i give the url:http://localhost:8080/j2eecode/ons or http://localhost:8080/j2eecode/servlet/ons it gives me error:
type Status report
message /j2eecode/ons
description The requested resource (/j2eecode/ons) is not available.
where am i wrong.
my configurations are as follows:
windows vista home basic
apache tomcat 6.0.16 in c:\
CLASSPATH :C:\apache-tomcat-6.0.16\lib
PATH: C:\jdk1.6.0_06\bin
CATALINA_HOME:C:\apache-tomcat-6.0.16
JRE_HOME:C:\Program Files\Java\jre1.6.0_06
my directory structure is:C:\apache-tomcat-6.0.16\webapps\j2eecode
in this i have WEB INF folder containing web.xml and classes folder where my ons.class file is placed.
one more thing when do we have to use the web.xml file and how is it used.
thanks in advance
Edited by: varun_chadha on Jul 17, 2008 12:00 PM

Answer 1

Have you mapped the servlet class in Web.xml ?
eg.
<servlet>
          <servlet-name>SName</servlet-name>
          <servlet-class>com.package1.ServletClass</servlet-class>
     </servlet>
     <servlet-mapping>
          <servlet-name>SName</servlet-name>
          <url-pattern>/SName</url-pattern>
     </servlet-mapping>