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How to remove a java variable from current scope in JSP?

The <c:remove> tag removes a variable from either a specified scope or the first scope where the variable is found (if no scope is specified). This action is not particularly helpful, but it can aid in ensuring that a JSP cleans up any scoped resources it is responsible for.

Attribute

The <c:remove> tag has the following attributes −

AttributeDescriptionRequiredDefault
varName of the variable to removeYesNone
scopeScope of the variable to removeNoAll scopes

Example

<%@ taglib uri = "http://java.sun.com/jsp/jstl/core" prefix = "c" %>
<html>
   <head>
      <title><c:remove> Tag Example</title>
   </head>
   <body>
      <c:set var = "salary" scope = "session" value = "${2000*2}"/>
     <p>Before Remove Value: <c:out value = "${salary}"/></p>
     <c:remove var = "salary"/>
     <p>After Remove Value: <c:out value = "${salary}"/></p>
   </body>
</html>

The above code will generate the following result −

Before Remove Value: 4000
After Remove Value:
Samual Sam
Samual Sam

Learning faster. Every day.

Updated on 30-Jul-2019 22:30:25

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