package  test.dates;

 import  java.util.GregorianCalendar;

/**
 * http://www.sql.ru/forum/actualthread.aspx?tid=226209
 */
 public   class  DiffLongDate {

    // Current time: 1129494062812

     public   static   void  main(String[] args) {
         long  today = 1129492801000l;
         long  yesterday = 1129492799000l;

        System.out.println(isToday(today));
        System.out.println(isToday(yesterday));
    }


     static   boolean  isToday( long  timeInMillisec) {
        GregorianCalendar calendar =  new  GregorianCalendar();
        calendar.clear(GregorianCalendar.MILLISECOND);
        calendar.clear(GregorianCalendar.SECOND);
        calendar.clear(GregorianCalendar.MINUTE);
        calendar.clear(GregorianCalendar.HOUR_OF_DAY);

         return  (timeInMillisec >= calendar.getTimeInMillis()) &&
                (timeInMillisec < calendar.getTimeInMillis() +  24  *  60  *  60  *  1000 );
    }
}