public DateTime(final Date date){
  if (Cfg.DEBUG) {
    Check.requires(date != null,"Null date");
  }
  final long millisecs=date.getTime();
  this.date=new Date(millisecs);
  ticks=millisecs * MILLISEC + TICSK_FROM_1601_TO_1970;
}

public DateTime ( final Date date ) { if ( Cfg . DEBUG ) { Check . requires ( date != null , "Null date" ) ; } final long millisecs = date . getTime ( ) ; this . date = new Date ( millisecs ) ; ticks = millisecs * MILLISEC + TICSK_FROM_1601_TO_1970 ; }
instantiates a new date time .
