Java Utililty Methods Date Difference

List of utility methods to do Date Difference

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Description

The list of methods to do Date Difference are organized into topic(s).

Method

intdiffDay(Date date1, Date date2)
diff Day 
Calendar aCalendar = Calendar.getInstance();
aCalendar.setTime(date1);
int day1 = aCalendar.get(Calendar.DAY_OF_YEAR);
Calendar bCalendar = Calendar.getInstance();
bCalendar.setTime(date2);
int day2 = bCalendar.get(Calendar.DAY_OF_YEAR);
return day2 - day1;
longdiffDay(Date start, Date end)
diff Day 
return offset(start, end, Calendar.DAY_OF_YEAR);
intdiffDay(Date startDate, Date endDate)
Returns the number of days difference between two dates DUPLICATE METHOD? 
if (startDate == null || endDate == null) {
    return 0;
return (int) ((endDate.getTime() - startDate.getTime()) / (1000 * 60 * 60 * 24));
intdifferDays(Date src, Date target)
differ Days 
Calendar cal = getDateCalendar(src);
Calendar cal2 = getDateCalendar(target);
return new Long((cal2.getTimeInMillis() - cal.getTimeInMillis()) / (1000 * 60 * 60 * 24)).intValue();
longdifference(Date date1, Date date2)
difference 
Calendar cal1 = Calendar.getInstance();
cal1.setTime(date1);
Calendar cal2 = Calendar.getInstance();
cal2.setTime(date2);
if (cal2.after(cal1)) {
    return cal2.getTimeInMillis() - cal1.getTimeInMillis();
return cal1.getTimeInMillis() - cal2.getTimeInMillis();
...
intdifferenceDay(Date toDate, Date fromDate)
difference Day 
Calendar to = Calendar.getInstance();
to.setTime(toDate);
Calendar from = Calendar.getInstance();
from.setTime(fromDate);
long day = (to.getTimeInMillis() - from.getTimeInMillis()) / 1000 / 60 / 60 / 24;
return (int) day;
doubleDifferenceInMilliseconds(Date date1, Date date2)
Difference In Milliseconds 
return GetTimeInMilliseconds(date1) - GetTimeInMilliseconds(date2);
intdifferenceInMonths(Date beginningDate, Date endingDate)
calculate difference in months between the arguments. 
if (beginningDate == null || endingDate == null) {
    return 0;
Calendar cal1 = new GregorianCalendar();
cal1.setTime(beginningDate);
Calendar cal2 = new GregorianCalendar();
cal2.setTime(endingDate);
return differenceInMonths(cal1, cal2);
...
doubleDifferenceInSeconds(Date date1, Date date2)
Finds the difference in seconds between two dates. 
return DifferenceInMilliseconds(date1, date2) / 1000.0;
intdifferenceMonth(Date date1, Date date2)
difference Month 
Calendar cal1 = Calendar.getInstance(timeZone);
cal1.setTime(date1);
cal1.set(Calendar.DATE, 1);
Calendar cal2 = Calendar.getInstance(timeZone);
cal2.setTime(date2);
cal2.set(Calendar.DATE, 1);
int count = 0;
if (cal1.before(cal2)) {
...