questin: urn and uri in TLD

[Alex Yiu <ay...@us.oracle.com>]

Hi, all,

One quick question: 

Regarding to the TLD file in tomcat, the example-taglib.tld contains an
XML element called "<urn>" under "<taglib>". But, "<urn>" does not exist
in the DTD in the JSP spec. Instead, it got "<uri>" under "<taglib>".
What's up with that?

And, in javax.servlet.jsp.tagext.TagLibraryInfo, it got both fields both
"uri" and "urn". uri is optional? and urn is required? (Please see the
java code comment.)

What's exactly "urn"? What's the difference between "uri" and "urn"? It
does not look like a typo to me. I cannot find any definition of "urn"
in JSP 1.1 spec. I hope someone can give a clarification.

And, I hope I did not miss any amendment / errata with JSP 1.1 spec.

Thanks.


Regards,
Alex Yiu