Java EE (Java Enterprise Edition) General Discussion

I have a servlet located at com.conversion.web called leftNavReader.java

I'm trying to access this servlet on my localhost with the following URL: http://localhost:8080/Conversion/start

but I keep getting this error:
HTTP Status 404 - /Conversion/start
--------------------------------------------------------------------------------
type Status report
message /Conversion/start
description The requested resource (/Conversion/start) is not available.


Here is what my web.xml looks like:

<?xml version="1.0" encoding="UTF-8"?>

<web-app>
<display-name>DataConversionWeb</display-name>

<servlet>
<servlet-name>start</servlet-name>
<display-name>Start</display-name>
<servlet-class>com.conversion.web.leftNavReader</servlet-class>
</servlet>

<servlet-mapping>
<servlet-name>start</servlet-name>
<url-pattern>/start</url-pattern>
</servlet-mapping>

</web-app>


Does anyone have any idea why I'm getting this error?