Server Sockets in Java

import java.io.*;
import java.net.*;
class SillyServer {
    public static void main(String argv[])
    throws Exception
    {
        String incoming;
        String outgoing;
        ServerSocket servSock =
        new ServerSocket(7277);
        
        while(true) {
            Socket connectedSocket =
        servSock.accept();
            DataInputStream fromClient =
                new DataInputStream(
                    connectedSocket.getInputStream());
            DataOutputStream toClient =
                new DataOutputStream(
                    connectedSocket.getOutputStream());
            incoming = fromClient.readLine();
            outgoing = incoming.toUpperCase() + "\n";
            toClient.writeBytes(outgoing);
            connectedSocket.close();
        }
    }
}