java - how to compare same days in date

I have a long data member that represents a date.

I cast it to a

 Date d = new Date(long);  

I want to now if a nother date has the same day. How do I do it? Thanks.

(For andrew)

Edit :

Found this solution

 SimpleDateFormat fmt = new SimpleDateFormat("yyyyMMdd");
 return fmt.format(date1).equals(fmt.format(date2));

in here Comparing two java.util.Dates to see if they are in the same day lo开发者_运维百科oks nice

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use the joda api.
http://joda-time.sourceforge.net/
Its a lot easier and better than the Calendar object route in java jdk

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Well you can convert them both to calendar Objects and get the calendar objects day and compare that way.

Calendar cal = Calendar.getInstance();
cal.setTimeInMillis(LONG VALUE HERE);
int day = cal.get(Calendar.DAY_OF_MONTH);

Do the same thing with the other date, and compare the values.

edit: By the way, you are not casting the long to a date, you are just creating a Date object using a long.

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Use apache commons.

 DateUtils.isSameDay(date1, date2);

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To see if the dates are equal:

date_one.equals(date_two);

To see if just the day is equal, I usually chop the time off the date (setHours(0), setMinutes(0), etc.) and then use the .equals() method.

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Use java.util.Calendar for all comparison operations.