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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 −
| Attribute | Description | Required | Default |
|---|---|---|---|
| var | Name of the variable to remove | Yes | None |
| scope | Scope of the variable to remove | No | All 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:
Updated on: 30-Jul-2019
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