Create an HTML page called button.html and add the following content to it:
<html> <head> </head> <body> <center> <form method="post" action="hidden_comet"> <input type="submit" value="Click"> </form> </center> </body> </html>
This page displays a form with a button that allows a user to update the count on the server. The servlet will then broadcast the updated count to all clients.