Package prob in Tomcat

I am currently using tomcat-4.1.24 and have edited the Root Context to <Context path="/sms" docBase="c:\SMS_App" debug="0" reloadable="true" crossContext="true"> in server.xml file.
One folder named �SMS_App� was created in the C:\, within that folder I created a �sms� folder. I placed ComputeSmsData.java and SerialToGsm.java into the �sms� folder. Both java files has � package sms; � in them. I written a inbox.jsp and saved it in the �SMS_App� folder. The codes are as follows:
<%@ page language="java" contentType="text/html" import="java.sql.*,java.io.*, java.util.*, javax.comm.*, sms.*" session="true" %>
<?xml version="1.0"?>
<!DOCTYPE html PUBLIC "-//WAPFORUM//DTD XHTML Mobile 1.0//EN"
"http://www.wapforum.org/DTD/xhtml-mobile10.dtd">
<% // Declare varibles
ComputeSmsData sms = new ComputeSmsData(); // Line 11
SerialToGsm stg = new SerialToGsm("COM4"); // Line 12
%>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title> Sending SMS </title>
</head>
<body>
<p>Hello World</p>
</body>
</html>
When I run these codes with the Tomcat I got error msg like:
� package sms does not exist
� cannot resolve symbol
ComputeSmsData sms = new ComputeSmsData();
� cannot resolve symbol
SerialToGsm stg = new SerialToGsm("COM4");
If I comment out line 11 & 12 it doesn�t give an error msg. I try followings but still to no avail.
<%@ page language="java" contentType="text/html" import="java.sql.*,java.io.*, java.util.*, javax.comm.*, sms.ComputeSmsData, sms.SerialToGsm " session="true" %>
Can anyone tell me what is the prob to it? I did create a "WEB-INF" folder in "SMS_App" folder, within the "WEB-INF" I created another folder called "classes" and put the ComputeSmsData.class and SerialToGsm.class in them. But again still cannot work....

To have classes and servlets in a webapp, you would have to create a WEB-INF folder under your context path, add a classes folder under that, and then your package structure:
C:\SMS_APP\ /*<---- Your Context path */
C:\SMS_APP\WEB-INF\  /*<---Webapp Info folder, holds libraries, classes, tags, and the all important web.xml */
C:\SMS_APP\WEB-INF\classes\  /* <----- The top of your 'classpath' for the webapp.  Packages under here */Take a search for packaging webapps and WARs (Web-app ARchive) to learn more. Also, maybe take a look at the J2EE tutorial or a J2EE book to learn more about it...

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