making single client and server
<p>I have written a client server program:</p>

<pre><code> {
  import java.net.*;
  class verify {
  public static int serverPort=998;
  public static int clientPort=999;
  public static int buffer_size=1024;
  public static DatagramSocket ds;
  public static byte buffer[]=new byte[buffer_size];

  public static void TheServer() throws Exception { 
   int pos=0;
   while (true) {
     int c=System.in.read();
     switch(c) {
        case -1:
          System.out.println("server quits");
           return;
        case '\r':
           break;
        case '\n':
           ds.send(new DatagramPacket(buffer,pos,InetAddress.getLocalHost(),clientPort)) ;
           pos=0;
           break;
        default:
           buffer[pos++] = (byte) c;
     }
   }
  }

 public static void TheClient()throws Exception {
   while(true) {
     DatagramPacket p=new DatagramPacket(buffer,buffer.length);
     ds.receive(p);
     System.out.println(new String(p.getData(),0,p.getLength()));
   }
 }

 public static void main(String args[]) throws Exception{
  if(args.length==1) {
    ds=new DatagramSocket(serverPort);
    TheServer();
  } else {
     ds=new DatagramSocket(clientPort);
     TheClient();
    }
  }
 }
}
</code></pre>

<p>Can I make my pc both server and client.If yes please suggest a way out.</p>
