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

class Connection extends Thread {

    DataInputStream in;
    DataOutputStream out;
    Socket clientSocket;

    public Connection (Socket aClientSocket) {
        try {
           clientSocket = aClientSocket;
           in = new DataInputStream(clientSocket.getInputStream());
           out = new DataOutputStream( clientSocket.getOutputStream());
           this.start();
        } catch(IOException e) {
           System.out.println("Connection: " + e.getMessage());
        }
    }

    public void run() {
        try { // an echo server
            String data = in.readUTF();
            out.writeUTF(data);
            System.out.println(data.toString());
        } catch(EOFException e) {
            System.out.println("EOF: " + e.getMessage());
        } catch(IOException e) {
            System.out.println("IO: " + e.getMessage());
        } finally {
            try {
                clientSocket.close();
            } catch (IOException e) {
                System.out.println("IO: " + e.getMessage());
            }
        }
    }
}