public static int getObjectSize
(
Serializable obj
)
  {
  byte[] ba = null;

  try
    {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    ObjectOutputStream    oos  = new ObjectOutputStream( baos );
    oos.writeObject( obj );
    oos.close();
    ba = baos.toByteArray();
    baos.close();
    }
  catch ( IOException ioe )
    {
    ioe.printStackTrace();
    return 0;
    }
  return ba.length;
  }