Additional Capabilities of JSP Pages

A JSP page allows you to maintain state using cookies or session object. Session object is more used for maintaining state because it is reliable than cookies. A JSP page can forward requests to other JSP pages and Sites. It allows us to use Beans in a JSP Page.

A Simple JSP Page looks like the following:

<% @ page language=”java “%>

Arithmetic Operations

<% String s, oper; int s1, s2;

s=request.getParameter(“fno”);

s1=Integer.parseInt(s);

s=request.getParameter (“sno”);

s2=Integer.parseInt (s);

oper=request.getParameter (“submit”); %>

< % if (oper.equals (“add”) { % >

Result is :< % =s1+s2 %> <% } %>

< % if (oper.equals (“sub”) { % >

Result is :< % =s1-s2 %> <% } %>

< % if (oper.equals (“mul”) { % >

Result is :< % =s1*s2 %> <% } %>

< % if (oper.equals (“div”) { % >

Result is :< % =s1/s2 %> <% } %>

Save this Jsp page as oper.jsp.The html code for the above JSP page is as follows:

http://localhost:8080/oper.jsp”>

&nbsp

First First no:

Second no:

That's it!

The objects mentioned in the Architecture of the Java Server Pages section are shown in the example in bold:

• The request object represents the user’s request.

The response object represents the response to the user.