Java the difference of Socket and ServerSocket in using port

Question

At the server side, we use

Socket server = serverSocket.accept();

to create a socket. After the socket is created, we can create a new thr

Answer 1

You should imagine a socket as a two-pair array of information:

• {Self Port, Self Addr}
• {Dest Port, Dest Addr}

therefore a single Server may have many connections connected to it that differ by their {Dest Port, Dest Addr}

example: Server port 10000 addr 10.0.0.1

Socket 1:

 - {10000,10.0.0.1}
 - {10001,10.0.0.2}

Socket 2:

 - {10000,10.0.0.1}
 - {10002,10.0.0.1} - address may seem the same but as a whole its a
   different destination

hope this helps.