Question

I’m doing a java program that will take an action based on the date and time.
the problem is that when I used the java.util.Date object i found that it is affected by the windows wall clock, i don’t know what to do, I’m needing to the date to be never affected by anything, or if any one know how to take this action in another way
thank you very much

Answer 1

If you want a specific Date and Time you need to create an instance of Date with the date and time instance information you want instead of calling new Date() which will give you the current instance in time. Use the GregorianCalendar or some other Calendar sub-class.

If you want only the Date to be relevant you need to ZERO out the time ( hours, minutes, seconds, milliseconds ) off your Date object.

public static Date setTime(final Date date, final int hourOfDay, final int minute, final int second, final int ms)
    {
        final GregorianCalendar gc = new GregorianCalendar();
        gc.setTime(date);
        gc.set(Calendar.HOUR_OF_DAY, hourOfDay);
        gc.set(Calendar.MINUTE, minute);
        gc.set(Calendar.SECOND, second);
        gc.set(Calendar.MILLISECOND, ms);
        return gc.getTime();
    }

then on your Date instance of date do .setTime(date, 0, 0, 0, 0);