i simply make following jsp file, but where this file copy in jboss-3.2.2 to get the result of expression in browser.
<%@ page language="java" errorPage="error" %>
<!DOCTYPE HTML PUBLIC "-//w3c//dtd html 4.0 transitional//en">
Lomboz JSP
<h1>Jsp is as...</h1>
1+2+3=<c:out value ="${1+2+3}" />