创建简单的ServerSocket服务器

import  java.io.IOException;
import  java.net.InetAddress;
import  java.net.ServerSocket;
import  java.net.Socket;

public class  SocketDemo  {
   public static  void  main ( String []  args ) {
     try  {
       ServerSocket server =  new  ServerSocket ( 6123 ) ;
       while  ( true ) {
         System.out.println ( "Listening" ) ;
         Socket sock = server.accept () ;
         InetAddress addr = sock.getInetAddress () ;
         System.out.println ( "Connection made to "  + addr.getHostName ()
             +  " ("  + addr.getHostAddress ()  +  ")" ) ;
         pause ( 5000 ) ;
         sock.close () ;
       }
     }  catch  ( IOException e ) {
       System.out.println ( "Exception detected: "  + e ) ;
     }
   }

   private static  void  pause ( int  ms ) {
     try  {
       Thread.sleep ( ms ) ;
     }  catch  ( InterruptedException e ) {
     }
   }
}