What is socket bind and how to bind an address?

In Java, I need to know what is the bind operation:

ServerSocket.bind()

From Javadoc:

Binds the ServerSocket to a specific address (IP address and port number).

I know what is bind and EJB (from example) to a name. Is this similar?

How to bind a local address to a server socket?

I am using:

providerSocket.bind(new InetSocketAddress("192.168.0.1", 0));

And I got Already Bound error!