Using Custom Tags

Custom tags are user-defined JSP language elements that encapsulate recurring tasks. Custom tags are distributed in a tag library, which defines a set of related custom tags and contains the objects that implement the tags.

Custom tags have the syntax

<prefix:tag attr1="value" ... attrN="value" />

or

<prefix:tag attr1="value" ... attrN="value" >
  body
</prefix:tag>

where prefix distinguishes tags for a library, tag is the tag identifier, and attr1 ... attrN are attributes that modify the behavior of the tag.

To use a custom tag in a JSP page, you must

  • Declare the tag library containing the tag

  • Make the tag library implementation available to the Web application

See Chapter 15 for detailed information on the different types ...

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