If you replace j2ee
by javaee
, it will work fine.
EDIT :
<web-app version="2.5"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
Edit:
To know anything further related to this error. Please follow the Link. Here you will find schemas for Java EE deployment descriptors (web.xml).