How to change port for java webserver

Hi all . I am using javawebserver 2 .Some time when i run it i get the following error shown in pic.

Quote:

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Java Web Server Error:cannot start service adminservice : port 9090 is already
in use.Change the port or shut down the other network sercice that is using it.Java Web Server UNRECOVERABLE ERROR: Cannot start servics

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could any one tell me how to know what program is using port 9090 and how to change the port so my java web server doesn't give that error. Looking forward for some reply.Thanks

Can we do it as follows,

Code:

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java -jar WebServerLite.jar c:\inetpub\wwwroot [new port number]

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