Java socket API: How to tell if a connection has been closed?

Question

I am running into some issues with the Java socket API. I am trying to display the number of players currently connected to my game. It is easy to determine when a player h

Answer 1

Thats how I handle it

 while(true) {
        if((receiveMessage = receiveRead.readLine()) != null ) {  

        System.out.println("first message same :"+receiveMessage);
        System.out.println(receiveMessage);      

        }
        else if(receiveRead.readLine()==null)
        {

        System.out.println("Client has disconected: "+sock.isClosed()); 
        System.exit(1);
         }    } 

if the result.code == null