If you told us what you do understand about how listeners work, then we could fill in the gaps. Right now we have to guess what you do or do not understand, which is a hit-or-miss proposition, and thus not very appealing. This is of course true for all questions, not just this one.
Ping & DNS - updated with new look and Ping home screen widget
Joined: Apr 02, 2008
There they are saying that concept of listener and how to configure the listener
But I like to know the low level implementation
1) Port is a memory area
2) JVM keep on checking that memory area whether any signals appears there or not?
3) If any signals appear then it has to activate the listener?
I am not sure about the correctness of my points??