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Form Calculator

index.jsp <HTML>     <HEAD>     </HEAD>     <BODY>         <FORM ACTION="basic.jsp" METHOD="POST">             <CENTER>                 <H1>The JSP Calculator</H1>                 <INPUT TYPE="TEXT" NAME="op1" VALUE="">                 <BR>                 +                 <BR>                 <INPUT TYPE="TEXT" NAME="op2" VALUE="">                 <BR>                 <INPUT TYPE="SUBMIT" VALUE="&nbsp;&nbsp;=&nbsp;&nbsp;">             </CENTER>         </FORM>     </BODY> </HTML> basic.jsp <HTML>     <HEAD>     </HEAD>     <BODY>         <H2>             <CENTER>                 The sum is:                 <%                  out.println(Integer.parseInt(request.getParameter("op1")) +                      Integer.parseInt(request.getParameter("op2")));                 %>             </CENTER>         </H2>     </BODY> </HTML>