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

intgetDifference(Date a, Date b)
get Difference 
int tempDifference = 0;
int difference = 0;
Calendar earlier = Calendar.getInstance();
Calendar later = Calendar.getInstance();
if (a.compareTo(b) < 0) {
    earlier.setTime(a);
    later.setTime(b);
} else {
...
longgetDifference(String dateStr1, String dateStr2, char choice)
Gets the difference between 2 dates in Seconds or Minutes or Hours or Days based on the choice given. 
if (dateStr1 == null || dateStr2 == null)
    throw new RuntimeException("Invalid Input");
DateFormat df = new SimpleDateFormat(STANDARD_DATE_FORMAT_STRING);
Date date1 = null, date2 = null;
try {
    date1 = df.parse(dateStr1);
} catch (ParseException e) {
    e.printStackTrace();
...
longgetDifferenceInDays(Calendar calendar0, Calendar calendar1)
get Difference In Days 
return getDifferenceInDays(calendar0.getTimeInMillis(), calendar1.getTimeInMillis());
StringgetDiffMon(Date dt, int idiff)
get Diff Mon 
Calendar c = Calendar.getInstance();
c.setTime(dt);
c.add(Calendar.MONTH, idiff);
return dtSimpleFormat(c.getTime());
StringgetDiffMon(Date dt, int idiff)
get Diff Mon 
Calendar c = Calendar.getInstance();
c.setTime(dt);
c.add(Calendar.MONTH, idiff);
return dateFormat(c.getTime());
StringgetDiffToString(Date date, int n, String pattern)
get Diff To String 
Date returnDay = new Date(date.getTime() + n * 24 * 3600 * 1000L);
SimpleDateFormat df = new SimpleDateFormat(pattern);
return df.format(returnDay);
StringgetScoreDifferenceString(int newNumber, int oldNumber)
get Score Difference String 
DecimalFormat format = new DecimalFormat("+#;-#");
return format.format(newNumber - oldNumber);
longgetSecondDiff(Date d1, Date d2)
get Second Diff 
long d1t = d1.getTime();
long d2t = d2.getTime();
return (d2t - d1t) / 1000;
doublegetTimeDifferenceInSeconds(Date d, Date d2)
get Time Difference In Seconds 
return Math.abs(d.getTime() - d2.getTime()) / 1000.0;
DatenextSeconds(Date date, int diff)
next Seconds 
return add(date, Calendar.SECOND, diff);