Java EE. Expression language in example

By default in JSP, Expression Language is turned off:

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Welcome to the World Manager</title>
</head>
<body>
    <%@ include file="header.jsp" %>
    <table style="width:100%;">
        <tr>
            <td style="width:25%;height:80%;" valign="top">
                <%@ include file="navbar.jsp" %>
            </td>
            <td style="width:75%;height:80%;">
                <h1>We don't know EL yet!</h1>
                <p>But if we did, this page would render it
                   here<br>
                   <br>
                   Hello <strong>${initParam.dbuserid}</strong>
                </p>
            </td>
        </tr>
    </table>
    <jsp:include page="footer.jsp" />
</body>
</html>

You can turn it on by isELIgnored=”true”

<%@ page language="java"
    contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"
    isELIgnored="true" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Welcome to the World Manager</title>
</head>
<body>
    <%@ include file="header.jsp" %>
    <table style="width:100%;">
        <tr>
            <td style="width:25%;height:80%;" valign="top">
                <%@ include file="navbar.jsp" %>
            </td>
            <td style="width:75%;height:80%;">
                <h1>We don't know EL yet!</h1>
                <p>But if we did, this page would render it
                   here<br>
                   <br>
                   Hello <strong>${initParam.dbuserid}</strong>
                </p>
            </td>
        </tr>
    </table>
    <jsp:include page="footer.jsp" />
</body>
</html>