Java Utililty Methods Week Calculate

List of utility methods to do Week Calculate

  1. HOME
  2. Java
  3. W
  4. Week Calculate

Description

The list of methods to do Week Calculate are organized into topic(s).

Method

intgetWeekOfDate(Date date)
get Week Of Date 
Calendar c = Calendar.getInstance();
c.setTime(date);
return c.get(Calendar.DAY_OF_WEEK);
intgetWeekOfYear(Date date, Locale locale)
get Week Of Year 
Calendar c = new GregorianCalendar(locale);
c.setTime(date);
return c.get(Calendar.WEEK_OF_YEAR);
intgetWeeksAddCount(int repType, int repIndex)
Gets count of weeks to add, when repetition was chosen. 
int weekNum = new GregorianCalendar().get(Calendar.WEEK_OF_YEAR);
int add = 0;
if (repType == 0)
    add = 1;
if ((repType == 1 && weekNum % 2 == 1) || (repType == 2 && weekNum % 2 == 0)) {
    add = 2;
if ((repType == 1 && weekNum % 2 == 0) || (repType == 2 && weekNum % 2 == 1)) {
...
intgetWeeksInYear(int year)
get Weeks In Year 
Calendar c = new GregorianCalendar();
c.set(year, 11, 31);
return c.get(Calendar.WEEK_OF_YEAR) == 53 ? 53 : 52;
booleanisSameWeekDates(Date date1, Date date2)
is Same Week Dates 
Calendar cal1 = Calendar.getInstance();
Calendar cal2 = Calendar.getInstance();
cal1.setTime(date1);
cal2.setTime(date2);
int subYear = cal1.get(Calendar.YEAR) - cal2.get(Calendar.YEAR);
if (0 == subYear) {
    if (cal1.get(Calendar.WEEK_OF_YEAR) == cal2.get(Calendar.WEEK_OF_YEAR))
        return true;
...
DatenextWeek(Date date, int week)
next Week 
Calendar cal = Calendar.getInstance();
if (date != null) {
    cal.setTime(date);
cal.add(Calendar.WEEK_OF_MONTH, week);
return cal.getTime();
longnextWeek(long date)
Returns the week after date. 
return addDays(date, 7);
DateplusHour(Date date, int plusWeek)
plus Hour 
return plusInteger(date, Calendar.HOUR, plusWeek);
DatestartOfWeek(Date datum)
start Of Week 
if (datum == null) {
    return null;
Calendar c = new GregorianCalendar();
c.setTime(datum);
while (c.get(Calendar.DAY_OF_WEEK) != Calendar.MONDAY) {
    c.setTime(addDays(c.getTime(), -1));
return startOfDay(c.getTime());
GregorianCalendarweekCal(int weekNumber)
week Cal 
int yearNum = INITIAL_YEAR + (weekNumber / 52);
int weekNum = weekNumber % 52;
GregorianCalendar cal = new GregorianCalendar();
cal.set(Calendar.YEAR, yearNum);
cal.set(Calendar.WEEK_OF_YEAR, weekNum);
return weekStart(cal);