Called when the form is filled in by the user.
resp.setContentType("text/html");
PrintWriter out = resp.getWriter();
// The usual HTML setup stuff.
out.println("<HTML>");
out.println("<HEAD>");
out.println("<BODY BGCOLOR=\"white\">");
// HTML for this page
out.println("<TITLE>Your Personal Random Numbers</TITLE>");
out.println("<H1>Your Personal Random Numbers</H1>");
out.println("<P>Here are your personal random numbers,");
out.println("carefully selected by a");
out.println("<A HREF=\"http://java.sun.com\">Java</A> program.");
out.println("<OL>");
// Figure out how many numbers to print.
int n = DEFAULT_NUMBER;
String num=req.getParameter("howmany");
if (num != null && num.length() != 0) {
try {
n = Integer.parseInt(num);
} catch (NumberFormatException e) {
out.println("<P>I didn't think much of ");
out.println(num);
out.println(" as a number.</P>");
}
}
// Now actually generate some random numbers.
Random r = new Random();
for (int i=0; i<n; i++) {
out.print("<LI>");
out.println(r.nextInt(49)); // for Lotto 6/49
}
out.println("</OL>");
// Print a break and a back link.
out.println("<HR></HR>");
out.println("<A HREF=\"index.html\">Back to main Page</A>");
out.println("</HTML>");
