How do JSP custom tag libs from external libraries work?

2018-06-03 21:23:33

If you have programmed a custom JSP tag library you should know that you may reference either a URI declared in the web.xml tab-lib element, or reference directly the tld file inside your webapp.

However, when I use an existing taglib such as DisplayTag that is packaged in a jar file included in my web app, you just use the URI. So my question is, how does the container know where to locate the custom tag classes?

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