Comment: A comment marks text or lines that the JSP container should ignore. A comment is useful when you want to comment out part of your JSP page. The JSP container does not process anything within the <%– and –%> characters or within the <!– and –> characters. A comment is not inserted into the response.
JSP Syntax-
<%– comment –%>
XML Syntax-
<!– comment –>
Example-comment.jsp
<%@ page language=”java” %>
<html>
<head><title>A Comment Test</title></head>
<body>
<h2>A Test of Comments</h2>
<%– This comment will not be included in the response –%>
</body>
</html>