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Simple Tag
Tag file

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Overview
 Tag life cycle
 Tag Library Descriptor
 Execution of JSP with Custom Tags
 Deploying & Using Custom Tags

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Simple Custom Tag

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Simple Tag
– This JSP 2.0 technology in introduced simple
tag handler, which is an improvement over the
classic custom tag. It contains very less
number of methods to implement
• SimpleTag
• SimpleTagSupport
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Simple Tag Interface
 doTag()
 setParent()
 getParent()
 setJspContext()
 setJspBody()

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SimpleTagSupport
 getJspContext()
 getJspBody()

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Processing Body Content within Simple Tag

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Tag File

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Tag File
 A tag file is a source file that contains a
fragment of JSP code that is reusable as a
custom tag. Tag files allow you to create
custom tags using JSP syntax. Just as a
JSP page gets translated into a servlet
class and then compiled, a tag file gets
translated into a tag handler and then
compiled.

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Tag File Directives
 Tag
 Include
 Taglib
 Attribute
 Variable

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 <jsp:invoke />
 <jsp:doBody/>

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Differences Tag File & TLD

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Summary
 Custom Tags
 Various type of Custom Tags
 Components of Tag Library
 javax.servlet.jsp.tagext package
 Common methods of Custom Tags
 Tag life cycle
 Tag Library Descriptor
 Execution of JSP with Custom Tags
 Deploying and Using Custom Tags