jstl General Purpose Tags: c:set

<c: set>                                           

2. <c: set>

The <c:set> tag is JSTL-friendly version of the setProperty action. The tag is helpful because it evaluates an expression and uses the results to set a value of a JavaBeans or a java.util.Map object.

Attributes :

The attributes of <c: set> are

1.     Value      :    Information to save

2.    Target     :    Name of the variable whose property should be modified

3.     Property :    Property to modify

4.    var           :    Name of the variable to store information.

5.     scope       :    Scope of variable to store information

Form1: To set an attribute in any scope.

Syntax:

<c:set  var = “name of attribute” value = “value of attribute” scope = “session”/>

Note : var and value attributes are mandatory but scope attribute is optional.

default scope is page.

test.jsp

<%@ page isELIgnored="false" %> <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <c:set var="x" value="10" scope="session"></c:set> <c:set var="y" value="20" scope="session"></c:set> <c:set var='z' value="50" scope="session"></c:set> <h3>Addition :<c:out value="${x+y+z}"></c:out></h3> <h3>subtraction  :<c:out value="${z-y-x}"></c:out></h3> <h3>multiplication  :<c:out value="${x*y*z}"></c:out></h3>

Output:  http://localhost:8080/Scwcd_jsp/test.jsp

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