Servlets and HTML - Developing Java Servlets - page 32

F IGURE 4.1
Form HTML Page.
You should now complete the form and click the Submit button. The response you receive,
which will of course depend on your entries, should look something like that shown in
Figure 4.2.
How the FormServlet Works
Now that you have seen what the FormServlet does, let's take a look at how it does it. The
area we want to focus on is listed here:
// Get all the parameter names
Enumeration parameters = request.getParameterNames();
String param = null;
// Iterate over the names, getting the parameters
while ( parameters.hasMoreElements() ) {
param = (String)parameters.nextElement();
out.println(“<BOLD>” + param +
“ : “ + request.getParameter(param) +
“</BOLD><BR>”);
}