Java EE (Java Enterprise Edition) General Discussion

Hello experts,
I have done a web application which is running successfully. I used Netbeans 6 and struts.
My interesting question is for running my application i need to type like

http://servername:port/application/index.jsp

How to avoid typing port number in the URL like

http://servername/application/index.jsp
because i have never seen the port in any real application developed in java on the web so if any one out there
shed some light on it, it will be greatly useful

Thanks in advance.

Regards,
SRI.