int
calculateDayDifference(final Date a, final Date b) This method calculates the difference between 2 dates.
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 {
...
long
calculateDays(Date beginDate, Date endDate) Calculates difference between two days, in days
GregorianCalendar beginCalendar = new GregorianCalendar();
beginCalendar.setTime(beginDate);
GregorianCalendar endCalendar = new GregorianCalendar();
endCalendar.setTime(endDate);
java.util.Date d1 = beginCalendar.getTime();
java.util.Date d2 = endCalendar.getTime();
long l1 = d1.getTime();
long l2 = d2.getTime();
...
String
calculateDifference(Date d1, Date d2) calculate Difference
Calendar startDate = Calendar.getInstance();
Calendar endDate = Calendar.getInstance();
startDate.clear();
endDate.clear();
startDate.setTime(d1);
endDate.setTime(d2);
if ((startDate == null) || (endDate == null) || startDate.after(endDate)) {
return "";
...
int
calculateDifferMonths(Date date1, Date date2, boolean isTruncate) calculate Differ Months
final int[] bgnDate, endDate;
if (date1.getTime() > date2.getTime()) {
bgnDate = getYearMonthDay(date2);
endDate = getYearMonthDay(date1);
} else {
bgnDate = getYearMonthDay(date1);
endDate = getYearMonthDay(date2);
final int endMonth;
if (!isTruncate || endDate[2] >= bgnDate[2]) {
endMonth = endDate[1];
} else {
endMonth = endDate[1] - 1;
if (endMonth >= bgnDate[1]) {
return (endDate[0] - bgnDate[0]) * 12 + (endMonth - bgnDate[1]);
} else {
return (endDate[0] - bgnDate[0] - 1) * 12 + (12 + endMonth - bgnDate[1]);
int
calculateNumberOfDays(String dateStr) calculate Number Of Days
SimpleDateFormat sdf = new SimpleDateFormat(DEFAULT_FORMAT);
try {
Date date = sdf.parse(dateStr);
Date now = new Date();
long n1 = now.getTime();
long n2 = date.getTime();
if (n1 > n2) {
long diffTime = n1 - n2;
...
int
countDiffDay(String beginDateBase, String endDateBase) count Diff Day
Calendar beginDate = Calendar.getInstance(Locale.US);
Calendar endDate = Calendar.getInstance(Locale.US);
int year, month, date;
year = Integer.valueOf(beginDateBase.substring(0, 4)).intValue();
if (year > 2400) {
year = year - 543;
month = Integer.valueOf(beginDateBase.substring(4, 6)).intValue() - 1;
...
int
dayDiff(Date d1, Date d2) Determines the number of days between two dates
long timeDiff = removeTime(d1).getTime() - removeTime(d2).getTime();
return (int) (timeDiff / 86400000);
long
dayDiff(Date start, Date end) day Diff
long day = compareDate(start, end);
if (day == 0) {
return 0;
if (day > 0) {
return (day - 1) / 1000 / 60 / 60 / 24 + 1;
} else {
return (day + 1) / 1000 / 60 / 60 / 24 - 1;
...
int
daysDiff(final Date data1, final Date data2) Get the difference in days of two given dates.
long ini = getCalendarInstance(data1).getTimeInMillis();
long fim = getCalendarInstance(data2).getTimeInMillis();
long nroHoras = (fim - ini) / 1000 / 3600;
int nroDias = (int) nroHoras / 24;
return nroDias;