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JavaServer Pages Standard Tag Library

Stephanie Bodoff

The JavaServer Pages Standard Tag Library (JSTL) encapsulates core functionality common to many JSP applications. For example, instead of iterating over lists using a scriptlet or different iteration tags from numerous vendors, JSTL defines a standard tag that works the same everywhere. This standardization lets you learn a single tag and use it on multiple JSP containers. Also, when tags are standard, containers can optimize their implementation.

JSTL has support for common, structural tasks such as iteration and conditionals, tags for manipulating XML documents, internationalization tags, and tags for accessing databases using SQL. It also introduces the concept of an expression language to simplify page development. JSTL also provides a framework for integrating existing tag libraries with JSTL.

This chapter demonstrates the JSTL through excerpts from the JSP version of the Duke's Bookstore application discussed in previous chapters. It assumes that you are familiar with the material in the Using Tags section of Chapter 5.

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All of the material in The J2EE Tutorial for the Sun ONE Platform is copyright-protected and may not be published in other works without express written permission from Sun Microsystems.