How do I find if a particular port is free on the local machine

I would like to find from a Java program if a particular port of the machine on which the program runs is free. I DO NOT want to bind to that port. I just want to identify if the port is free.
jacob_412Asked:
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MicheleMarconConnect With a Mentor Commented:
The only way of knowing it with Java is connecting... but you don't accept this solution.

http://www.cafeaulait.org/course/week12/16.html
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objectsCommented:
don't think it can be done from java . would need native code I'd think

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jacob_412Author Commented:
Thanks ! If it is not possible to check if a port is free without connecting, I guess I'll have to accept it an work on this solution.
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