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Tag Files for JSP 2.0 compliant container

Aaron Raja
Ranch Hand

Joined: Jun 07, 2007
Posts: 206

Can any one explain me what this mean?
A JSP 2.0 compliant container will automatically genarate an implicit tag library for a set of tag files.


Thanks, AR
Christophe Verré

Joined: Nov 24, 2005
Posts: 14687

The container will look for Tag Files (.tag) under WEB-INF (or a subdirectory of it) (Jarred Tag Files is another story). It will then create a TLD for these files, so you don't need to make one. That's what they mean by "implicit tag library".

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Rovart Shrivastava

Joined: Feb 13, 2009
Posts: 4
I think when we use "tagdir" in jsp to give the info of tag file location , container create itself tld file for given tag.
but when we use "uri" in jsp then container look for tld file created for the tag.
Poonam Agarwal
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Joined: May 12, 2008
Posts: 323
Packaging tag files directly in a web application , The JSP container must generate an implicit tag library for each directory
under and including /WEB-INF/tags/. This tag library can be imported only via the
tagdir attribute of the taglib directive.

But If you placed your tag files as a JAR under META-INF/tags directory then have to declared a explicit tag library OR TLD file to mention the location of that tag files.
<tag-file> element should be used in that case.

Please refer JSP specification 2.0 (JSP.8.4.3 Packaging Directly in a Web Application)

I hope this will help


Thanks <br />Poonam Agarwal SCWCD 86%
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subject: Tag Files for JSP 2.0 compliant container
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