Java Utililty Methods Calendar Different

List of utility methods to do Calendar Different

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Description

The list of methods to do Calendar Different are organized into topic(s).

Method

intgetYearDifference(GregorianCalendar fromCalendar, GregorianCalendar toCalendar)
get Year Difference 
int count = 0;
for (fromCalendar.add(Calendar.YEAR, 1); fromCalendar.compareTo(toCalendar) <= 0; fromCalendar
        .add(Calendar.YEAR, 1)) {
    count++;
return count;
longmillisDiff(Calendar c1, Calendar c2)
millis Diff 
long time1 = c1.getTimeInMillis();
long time2 = c2.getTimeInMillis();
return Math.abs(time1 - time2);
doubleminutesDiff(Calendar c1, Calendar c2)
minutes Diff 
return secondsDiff(c1, c2) / 60.0;
intreduceAndCorrect(Calendar start, Calendar end, int field, int difference)
Reduces by difference, then if it overshot, calculates the overshot amount and fixes and returns the amount to change by. 
end.add(field, -1 * difference);
int endValue = end.get(field);
int startValue = start.get(field);
if (endValue < startValue) {
    int newdiff = startValue - endValue;
    end.add(field, newdiff);
    return newdiff;
} else {
...
longtimeDiff(Calendar c1, Calendar c2)
Diffs two Calendar instances (C2 - C1) 
return (c2.getTimeInMillis() - c1.getTimeInMillis()) / 1000;