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import java.util.Date;
import java.util.GregorianCalendar;
/**
* DateDiff -- compute the difference between two dates.
*/
public class DateDiff {
public static void main(String[] av) {
/** The date at the end of the last century */
Date d1 = new GregorianCalendar(2000, 11, 31, 23, 59).getTime();
/** Today's date */
Date today = new Date();
// Get msec from each, and subtract.
long diff = today.getTime() - d1.getTime();
System.out.println("The 21st century (up to " + today + ") is "
+ (diff / (1000 * 60 * 60 * 24)) + " days old.");
}
}
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