This tag is used inside an <error-page> tag, to specify the page to send users to if the specified error occurs.
The page must be specified relative to the application root, and must always start with a leading '/'.
Example:
<!-- Define an error handler for 404 pages, which directs users to the page /error404.jsp -->
<error-page>
<error-code>404</error-code>
<location>/error404.jsp</location>
</error-page>