public void run()
{

try 
{
      while ((line = reader.readLine( )) != null)
      {
		   if (line.indexOf("004") >= 0) 
		   {
		        break;
	      }

         else if (line.indexOf("433") >= 0) 
         {
              pane.setText(pane.getText() + new String("Nickname already in use.\n"));
              return;
         }
      }

} catch (IOException e) {

System.out.println(e.getMessage());

}


}