JavaServer Pages, Second Edition

Name

<c:if>

Synopsis

The <c:if> action evaluates its body only if the specified expression evaluates to true. Alternatively, the evaluation result can be saved as a scoped Boolean variable.

Syntax 1: Without a body

<c:if test="booleanExpression" 
  var="var" [scope="page|request|session|application"]/>

Syntax 1: With a body

<c:if test="booleanExpression">
  JSP elements
</c:if>

Attributes

Attribute name	Java type	Dynamic value accepted	Description
test	boolean	Yes	The test expression
var	String	No	The variable name
scope	String	No	The variable scope

Example

<c:if test=${empty param.empDate}">
  <jsp:forward page="input.jsp">
    <jsp:param name="msg" value="Missing the Employment Date" />
  </jsp:forward>
</c:if>