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The following example will demonstrate the various bean scopes for the JSP application. All the examples will use the Counter bean which has only one property counter of type int .
(1) Page Scope
Note:- This is the default scope for the bean object. So in the following JSP example "bean1" is accessed only in this page and not anywhere else.
<HTML>
<BODY>
<H1>Using Beans and Page Scope</H1>
<jsp:useBean id="bean1" class="com.visualbuilder.Counter" scope="page" />
<%bean1.setCounter(bean1.getCounter() + 1);%>
The counter value is: <jsp:getProperty name="bean1" property="counter" />
</BODY>
</HTML>
(1) Request Scope
index.jsp
<jsp:useBean id="counter" scope="request" class="com.visualbuilder.Counter" />
<html>
<head>
<title>Request Bean Example</title>
</head>
<body>
<%
counter.setCounter(10);
%>
<jsp:forward page="request.jsp" />
</body>
</html>
request.jsp
<jsp:useBean id="counter" scope="request" class="com.visualbuilder.Counter" />
<html>
<body>
<H3>Request Bean Example</H3>
<center><b>The current count for the counter bean is: </b>
<%=counter.getCounter() %></center>
</body>
</html>
(3) Session Scope
Example for Session Scope.
<HTML>
<BODY>
<jsp:useBean id="bean1" class="com.visualbuilder.Counter" scope="session" />
<%bean1.setCounter(bean1.getCounter() + 1);%>
The counter value is:
<jsp:getProperty name="bean1" property="counter" />
</BODY>
</HTML>
(3) Application Scope
<jsp:useBean id="counter" scope="application" class="com.visualbuilder.Counter" />
<html>
<body>
<center>
<b>The current count for the counter bean is: </b> <%=counter.getCounter() %>
</center>
</body>
</html>
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