[jdom-interest] please help

[Sridhar Gopu]

Hi,
I'm a beginner to JDOM and I came across a tutorial on JDOM,JSP where they have given an example application. Here is the link 
http://cswww.essex.ac.uk/TechnicalGroup/TechnicalHelp/jdom1.htm

I have unzipped the files and placed them in 
tomcat/webapps/cards directory, and I also recompiled the .java files, but when i open the page
http://localhost:8080/cards/welcomecard.html
and enter some data, it gives an error while running the http://localhost:8080/cards/cardCreate.jsp page 
it says

Error: 500
Location: /cards/cardCreate.jsp
Internal Servlet Error:

java.lang.NoClassDefFoundError: org/jdom/input/SAXBuilder
	at BC.(BC.java:29)
	at BC.(BC.java:21)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:274)
	at java.lang.Class.newInstance0(Class.java:306)
	at java.lang.Class.newInstance(Class.java:259)
	at java.beans.Beans.instantiate(Beans.java:204)
	at java.beans.Beans.instantiate(Beans.java:48)
	at cardCreate_1._jspService(cardCreate_1.java:71)
	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java)
	at org.apache.tomcat.facade.ServletHandler.doService(ServletHandler.java:574)
	at org.apache.tomcat.core.Handler.invoke(Handler.java:322)
	at org.apache.tomcat.core.Handler.service(Handler.java:235)
	at org.apache.tomcat.facade.ServletHandler.service(ServletHandler.java:485)
	at org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:917)
	at org.apache.tomcat.core.ContextManager.service(ContextManager.java:833)
	at org.apache.tomcat.modules.server.Http10Interceptor.processConnection(Http10Interceptor.java:176)
	at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:494)
	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:516)
	at java.lang.Thread.run(Thread.java:536)

any ideas please?? I kindly request you to please help me out. I'll look forward for your replies.

Thanks,
sridhar.