public byte[] toByteArray(){
  byte b[]=new byte[12];
  ByteBuffer bb=ByteBuffer.wrap(b);
  bb.putInt(_time);
  bb.putInt(_machine);
  bb.putInt(_inc);
  return b;
}

public byte [ ] toByteArray ( ) { byte b [ ] = new byte [ 12 ] ; ByteBuffer bb = ByteBuffer . wrap ( b ) ; bb . putInt ( _time ) ; bb . putInt ( _machine ) ; bb . putInt ( _inc ) ; return b ; }
convert to a byte array . note that the numbers are stored in big - endian order .
