Is there a custom tag which can be used to implement iteration within JSP pages?

JSP 1.1 does not have an iteration tag. Building one is, anyway something really easy and you can find a good tutorial on the Orion Server site (http://www.orionserver.com/).

In the new version of JSP 1.2, Sun has finally added the 'IterationTag' that will help the recurion, with or without a body content.