You can't open a port with Java. It's a firewall operation. You can listen at a port, which your code sample exemplifies, or you can connect to it, by constructing a new Socket(...) with the appropriate hostname:port parameters.
Frage
I am beginner of socket programming. I want to open "closed port", i can listening port like
serverSocket = new ServerSocket(port);
What is the difference between listening / open port and how do i open port. Anyone can help?
Lösung
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