import java.net.*;
import java.io.*;

public class GreetingServer extends Thread {
    ServerSocket serverSocket;

   public GreetingServer(int port) throws IOException {
      serverSocket = new ServerSocket(port);
      //serverSocket.setSoTimeout(10000);
   }

   public void run() {
      while(true) {
         try {
            System.out.println("Waiting for client on port"  +
               serverSocket.getLocalPort() + "...");
            Socket server = serverSocket.accept();

            System.out.println("Just connected to"  + server.getRemoteSocketAddress());
            DataInputStream in = new DataInputStream(server.getInputStream());

            System.out.println(in.readUTF());
            DataOutputStream out = new DataOutputStream(server.getOutputStream());
            out.writeUTF("Thank you for connecting to"  + server.getLocalSocketAddress()
               + "nGoodbye!");
            server.close();

         } catch (SocketTimeoutException s) {
            System.out.println("Socket timed out!");
            break;
         } catch (IOException e) {
            e.printStackTrace();
            break;
         }
      }
   }

   public static void main(String [] args) {
      int port = 9090;//Integer.parseInt("9090");
      try {
         Thread t = new GreetingServer(port);
         t.start();
      } catch (Exception e) {
         e.printStackTrace();
      }
   }
}