Enlist types of JSP tags?

Tags are an important part of JSP. There are 4 main types of JSP tags,

Directive tag: This type of tag is used to import packages into the current JSP application. The other use for this directive is to define error handling pages and for session information.

Syntax

 
<%@ directive attribute="value" %> 

The three types of directive tags are,

• <%@page...%> - it defines page-dependent attributes.
• <%@include...%> - it includes a file.
• <%@taglib...%> - it declares a tag library to be used on the page.

Example

<%@page language="java" session="true" %> 
<%@ include file="/title.jsp"%> 

Declaration tag: This tag is used to declare variables or methods to be used in the Java code of the JSP.

Syntax

<%! declaration; %> 

Example

<%! int k = 0; %> 

Scriptlet tag: This tag contains the actual java code like java declaration, methods, expressions, etc.

Syntax

<% java code %> 

Example

<% out.print(“an example of scriptlet tag”); %> 

Expression tag: The expression tag contains an expression that needs to be evaluated. It can contain any expression that is valid in Java code.

Syntax

<%= expression %> 

Example

<%= (new java.util.Date()).toLocaleString()%>