jsp
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>
<%@ taglib prefix="x" uri="http://java.sun.com/jsp/jstl/xml" %>
<%@ taglib prefix="sql" uri="http://java.sun.com/jsp/jstl/sql" %>
jsp
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<head>
<title>JSTL Core Example</title>
</head>
<body>
<c:set var="name" value="John Doe" />
<c:if test="${name != null}">
<p>Welcome, ${name}!</p>
</c:if>
</body>
</html>
