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

longdiff(int type, Date date1, Date date2)
diff 
switch (type) {
case Calendar.YEAR:
    Calendar calendar = Calendar.getInstance();
    calendar.setTime(date1);
    long time = calendar.get(Calendar.YEAR);
    calendar.setTime(date2);
    return time - calendar.get(Calendar.YEAR);
case Calendar.DATE:
...
intdiff_in_date(Date d1, Date d2, String type)
difidate 
if (type.endsWith("day"))
    return (int) (d1.getTime() - d2.getTime()) / 86400000;
else if (type.endsWith("hour"))
    return (int) (d1.getTime() - d2.getTime()) / 3600000;
else if (type.endsWith("min"))
    return (int) (d1.getTime() - d2.getTime()) / 60000;
else
    return (int) (d1.getTime() - d2.getTime()) / 86400000;
...
LongdiffBetweenMonth(Date d1, Date d2)
diff Between Month 
Calendar cal1 = new GregorianCalendar();
cal1.setTime(d1);
Calendar cal2 = new GregorianCalendar();
cal2.setTime(d2);
long month = (cal2.get(Calendar.YEAR) - cal1.get(Calendar.YEAR)) * 12 + cal2.get(Calendar.MONTH)
        - cal1.get(Calendar.MONTH);
return month;
intdiffCommercial(Date dateUntil, Date dateFrom, boolean bAddDay)
returns the commercial day difference between two dates 
int result = 0;
if (dateFrom.after(dateUntil)) {
    result = -1;
} else if (dateFrom.equals(dateUntil)) {
    result = (bAddDay ? 1 : 0);
} else {
    final Calendar calFrom = new GregorianCalendar();
    calFrom.setTime(dateFrom);
...
longdiffDate(Date date, Date date1)
diff Date 
return (getMillis(date) - getMillis(date1)) / 86400000L;
intdiffDate(java.util.Date date, java.util.Date date1)
diff Date 
return (int) ((getMillis(date) - getMillis(date1)) / (24 * 3600 * 1000));
intdiffDateD(Date sd, Date ed)
diff Date D 
return Math.round((float) (ed.getTime() - sd.getTime()) / 86400000) + 1;
intdiffDateM(Date sd, Date ed)
Get the total month from two date. 
Calendar c_sd = Calendar.getInstance();
Calendar c_ed = Calendar.getInstance();
c_sd.setTime(sd);
c_ed.setTime(ed);
return (c_ed.get(Calendar.YEAR) - c_sd.get(Calendar.YEAR)) * 12 + c_ed.get(Calendar.MONTH)
        - c_sd.get(Calendar.MONTH) + 1;
longdiffDates(long starttime, long endtime, int type)
diff Dates 
long result = endtime - starttime;
switch (type) {
case 1:
    result = result / (1000 * 60 * 60 * 24 * 365);
    break;
case 2:
    result = result / (1000 * 60 * 60 * 24 * 30);
    break;
...
longdiffDateSec(java.util.Date date, java.util.Date date1)
diff Date Sec 
long t1 = date1.getTime();
long t2 = date.getTime();
long millis = t2 - t1;
long seconds = TimeUnit.MILLISECONDS.toSeconds(millis);
return seconds;