javax.servlet.ServletException: Cannot create bean of class...

hi Guys
I m working on Tomcat server 3.2.3
I have my jsp files stored at following path:-
C:\jakarta-tomcat-3.2.3\webapps\examples\jsp\anand
and my beans are stored at following path
C:\jakarta-tomcat-3.2.3\webapps\examples\WEB-INF\classes\projsp
when i run the file i get the error
ServletException: Cannot create bean of class...
why does this happen
my jsp file is as follows
<html>
<title>Browse the Catalog</title>
<body>
<%@ page language="java" import="projsp.*" %>
<jsp:useBean id="Item" class="projsp.Item" />
<table>
<tr>
<td>Item Description<td>Price<td>Quantity in Hand
</tr>
<%

Vector items=Item.getItems();
out.print(items);

%>
<tr>
<td><input type=submit value="Add Selected items">
</tr>
</form>
</table>
</body>
</html>

why is this happening
please help
its so confusing

Problably some error in your bean. Remember that a bean must have an empty constructor(i.e- you can�t create a constructor that receives parameters for your bean).

Hey Pls help me out with this proble,..
Ther is nothing wrong with my bean or class.
pls anyone out ther...why do we get this error
all you jave gurus where are u...i m stuck.

Could you include more of the error message? There may be a hint there.

this is the error i am getting please help...........
javax.servlet.ServletException: Cannot create bean of class Item
at jsp.anand._0002fjsp_0002fanand_0002fdispord_0002ejspdispord_jsp_15._jspService(_0002fjsp_0002fanand_0002fdispord_0002ejspdispord_jsp_15.java:77)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.jasper.servlet.JspServlet$JspCountedServlet.service(JspServlet.java:130)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.java:282)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:429)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:500)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:405)
at org.apache.tomcat.core.Handler.service(Handler.java:287)
at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
at org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:812)
at org.apache.tomcat.core.ContextManager.service(ContextManager.java:758)
at org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpConnectionHandler.java:213)
at org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
at org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:501)
at java.lang.Thread.run(Thread.java:484)