Creating and adding a JAR to TomCat

I am new to the world of Java and 400 and we have been doing well with JSP's, 
however we wanted to add a JAR file of our package edu.pct... to house all of 
our standard classes. Currently, all that has been developed is a DB Connection 
Class.  I used the jar.exe from the Java SDK to package it. The directory 
structure in the JAR file is edu/pct/db plus the manifest directory and file 
are in the root. Inside the db folder is the DBConn.class.  I added the JAR 
file, master.jar, to the HTTPServers Class Path.  I am using import edu.pct but 
on execution of the JSP I get a Class edu.pct not found in import. import 
edu.pct; 1 error. 
This has got me.
 
Thanks,
Dan