jstl problem

i am using netbeans 5.5.1.. it came with tomcat 5 and jstl1.1.. i have added the jstl jars to the library. my jsp page contains

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

and my web.xml has

<?xml version="1.0" encoding="UTF-8"?>

<web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

but i am still getting the exception

org.apache.jasper.JasperException: The absolute uri: http://java.sun.com/jsp/jstl/core cannot be resolved in either web.xml or the jar files deployed with this application

according to this thread

http://forum.java.sun.com/thread.jspa?threadID=629437&tstart=0

there is nothing wrong with what i am doing.. why do i still get the exceptions?

[933 byte] By [hardcodera] at [2007-11-27 10:30:55]