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JSP tutorial Part 5:JSP Tags


JSP Tags
Tags in Jsp:

Tags in JSP can be categorized as
-comments
-Scripting elements
-Directive elements
-Action Elements
·         Anything other than the above mentioned four categories fall under template data.
·         This will include all HTML tags and text.
JSP Comments:
JSP comment marks text or statements that the JSP container should ignore. Following is the syntax of JSP comments:
<%-- comment here --%>
“Note: in HTMl <!- -comment here   --%> “
JSP Scripting Elements
Scripting elements are elements in the JSP page that contains java code. JSP contains 3 types of scripting elements as shown below:
1. Declarations:
–Format: <%! code %>
–Inserted into the body of the servlet class, outside of any existing methods
2. Expressions:
–Format: <%= expression %>
–Evaluated and inserted into the servlet’s output i.e., results in something
like out.print(expression) i.e. expression placed in jspServiceinside
out.print()
3. Scriptlets:
–Format: <% code %>
inserted into the servlet jspService() method

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