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

longgetDateDiff(String startTime, String endTime)
get Date Diff 
long diff = 0;
DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
try {
    Date d1 = df.parse(startTime);
    Date d2 = df.parse(endTime);
    diff = d2.getTime() - d1.getTime();
} catch (Exception e) {
return diff;
longgetDateDiffDay(String begindate, String enddate)
get Date Diff Day 
long hourDiff = getDateDiffHour(begindate, enddate);
Float dayDiff = (float) (hourDiff / 24);
return dayDiff.intValue();
doublegetDateDifference(String start, String end)
get Date Difference 
double result;
DateFormat format = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS");
String start_fixed = start.substring(0, 23); 
String end_fixed = end.substring(0, 23); 
try {
    Date startDate = format.parse(start_fixed);
    Date endDate = format.parse(end_fixed);
    result = endDate.getTime() - startDate.getTime();
...
intgetDateDifference(String startDateString, String endDateString)
get Date Difference 
int returnVal = 0;
if ((startDateString != null) && (endDateString != null)) {
    java.util.Date startDate = getDate(startDateString);
    java.util.Date endDate = getDate(endDateString);
    returnVal = getDateDifference(startDate, endDate);
return returnVal;
longgetDateDiffHour(String begindate, String enddate)
get Date Diff Hour 
long minuteDiff = getDateDiffMinute(begindate, enddate);
Float hourDiff = (float) (minuteDiff / 60);
return hourDiff.intValue();
intgetDayDiff(Date firstDate, Date secondDate)
Returns the difference of two dates in days (fristDay - secondDay). 
long fristDay = (int) (firstDate.getTime() / (86400. * 1000.));
long secondDay = (int) (secondDate.getTime() / (86400. * 1000.));
return (int) (fristDay - secondDay);
longgetDiff(Date from, Date to)
get Diff 
return from.getTime() - to.getTime();
StringgetDiffDate(String srcDate, String format, int diff)
get Diff Date 
DateFormat f = new SimpleDateFormat(format);
try {
    Date source = f.parse(srcDate);
    Calendar c = Calendar.getInstance();
    c.setTime(source);
    c.add(Calendar.DATE, diff);
    return f.format(c.getTime());
} catch (Exception e) {
...
longgetDiffDays(Date from, Date to)
get Diff Days 
return (to.getTime() - from.getTime()) / 86400000;
intgetDiffDays2(Date one, Date two)
get Diff Days 
Calendar sysDate = new GregorianCalendar();
sysDate.setTime(one);
Calendar failDate = new GregorianCalendar();
failDate.setTime(two);
return (int) ((sysDate.getTimeInMillis() - failDate.getTimeInMillis()) / (24 * 60 * 60 * 1000));