jsp
<html>
<head>
<title>My JSP Page</title>
</head>
<body>
<%
String message = "Hello, World!";
out.println(message);
%>
</body>
</html>
jsp
<jsp:useBean id="user" class="com.example.User" scope="session"/>
<p>Welcome, ${user.name}!</p>
<custom:myTag/>
