Servlet Complile Error (DataException)

I have set class paths to servlet-api.jar but am recieving an error when trying to compile my servlet

catch (DataException unexpected) -- cannot find symbol

It is taking exception to the DataException class.My research on this class has proved fruitless. I am NOT recieving "package.http servlet does not exist" message so this is not case of jar files not available.Can anyone help? Feedback appreciated :)

[426 byte] By [Styx218a] at [2007-11-26 16:00:43]
# 1
What package do you expect that class to be in? (It isn't part of the servlets specification.) When you answer that, make sure you import the class or package and make sure the package is in the classpath when you compile.
DrClapa at 2007-7-8 22:22:13 > top of Java-index,Enterprise & Remote Computing,Web Tier APIs...
# 2

these are my declarations

package com.football;

import java.io.IOException;

import java.sql.SQLException;

import java.util.List;

import javax.naming.NamingException;

import javax.servlet.RequestDispatcher;

import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

I know this is a case of me not importing something but i dont know what.Please help!!

Styx218a at 2007-7-8 22:22:13 > top of Java-index,Enterprise & Remote Computing,Web Tier APIs...