Here is a program to calculate your number that uses four submit buttons for four different purposes.
Just Paste it in index.jsp file and run the program.
<%@ page language="java"%>
<html>
<head>
<title>Using Multiple Forms</title>
</head>
<body>
<h1>Using Multiple Forms</h1>
<%
if(request.getParameter("button") != null) {
%>
<% String s = request.getParameter("button");
int no1,no2;
if(request.getParameter("no1").equals("")) { no1 = 0; } else no1 = Integer.valueOf(request.getParameter("no1"));
if(request.getParameter("no2").equals("")) { no2 = 0; } else no2 = Integer.valueOf(request.getParameter("no2"));
if (s.equals("ADD")) {
out.println("Result is " + (no1 + no2));
}
else if (s.equals("SUB")) {
out.println("Result is " + (no1-no2));
}
else if(s.equals("MUL")) {
out.println("Result is " + (no1*no2));
}
else if(s.equals("DIV")) {
out.println("Result is " + (no1/no2));
}
%>
<%
}
%>
<form name="form1" method="get">
<input name="no1">
<input name="no2">
<input type="hidden" name="button" value="ADD">
<input type="submit" value="ADD">
</form>
<form name="form2" method="get">
<input name="no1">
<input name="no2">
<input type="hidden" name="button" value="SUB">
<input type="submit" value="SUB">
</form>
<form name="form3" method="get">
<input name="no1">
<input name="no2">
<input type="hidden" name="button" value="MUL">
<input type="submit" value="MUL">
</form>
<form name="form4" method="get">
<input name="no1">
<input name="no2">
<input type="hidden" name="button" value="DIV">
<input type="submit" value="DIV">
</form>
</body>
</html>
<html>
<head>
<title>Using Multiple Forms</title>
</head>
<body>
<h1>Using Multiple Forms</h1>
<%
if(request.getParameter("button") != null) {
%>
<% String s = request.getParameter("button");
int no1,no2;
if(request.getParameter("no1").equals("")) { no1 = 0; } else no1 = Integer.valueOf(request.getParameter("no1"));
if(request.getParameter("no2").equals("")) { no2 = 0; } else no2 = Integer.valueOf(request.getParameter("no2"));
if (s.equals("ADD")) {
out.println("Result is " + (no1 + no2));
}
else if (s.equals("SUB")) {
out.println("Result is " + (no1-no2));
}
else if(s.equals("MUL")) {
out.println("Result is " + (no1*no2));
}
else if(s.equals("DIV")) {
out.println("Result is " + (no1/no2));
}
%>
<%
}
%>
<form name="form1" method="get">
<input name="no1">
<input name="no2">
<input type="hidden" name="button" value="ADD">
<input type="submit" value="ADD">
</form>
<form name="form2" method="get">
<input name="no1">
<input name="no2">
<input type="hidden" name="button" value="SUB">
<input type="submit" value="SUB">
</form>
<form name="form3" method="get">
<input name="no1">
<input name="no2">
<input type="hidden" name="button" value="MUL">
<input type="submit" value="MUL">
</form>
<form name="form4" method="get">
<input name="no1">
<input name="no2">
<input type="hidden" name="button" value="DIV">
<input type="submit" value="DIV">
</form>
</body>
</html>
