Ans :
As yet, you have learned the basic elements of JSP. In this section, you will learn about the
creation of custom tag libraries in Java Server Pages.
A custom tag is user defined tag. It is a reusable code in a JSP page and tag library is a
collection of custom tags.
Custom Tag Syntax –
To use the customs tags in a JSP page, JSP technology provide a taglib directive to make use
of the tag. The taglib directive has the following syntax:
To use the customs tags in a JSP page, JSP technology provide a taglib directive to make use
of the tag. The taglib directive has the following syntax:
<%@ taglib uri=”tagLibraryURI” prefix=”tagPrefix” %>
The uri attribute defines an absolute or relative uri of tag library descriptor (TLD) file and the
prefix attribute defines the string that will identify a custom tag instance.
To use customs tags in a JSP page, you need to know four components that make use of the
custom tags. These are:
1) Tag handler class
2) Tag library descriptor file
3) JSP file
4) Deployment descriptor file (web.xml)
