Java Utililty Methods Day of Week

List of utility methods to do Day of Week

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Description

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

Method

ListgetAllDaysDateBetween(Date startDate, Date endDate, DayOfWeek dayOfWeek)
get All Days Date Between 
Calendar startCal = Calendar.getInstance();
startCal.setTime(startDate);
Calendar endCal = Calendar.getInstance();
endCal.setTime(endDate);
ArrayList<Date> daysDateList = new ArrayList<>();
while (!startCal.equals(endCal)) {
    startCal.add(Calendar.DATE, 1);
    if (startCal.get(Calendar.DAY_OF_WEEK) == dayOfWeek.getValue()) {
...
Date[]getBounceDateofWeek(Date date)
get Bounce Dateof Week 
Calendar calendar = new GregorianCalendar();
calendar.setFirstDayOfWeek(Calendar.MONDAY);
calendar.setTime(date);
calendar.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
Date begin = calendar.getTime();
calendar.set(Calendar.DAY_OF_WEEK, Calendar.SUNDAY);
Date end = calendar.getTime();
return new Date[] { begin, end };
...
DategetDateByWeek(int week)
get Date By Week 
Calendar cal = Calendar.getInstance();
int nowWeek = cal.get(Calendar.DAY_OF_WEEK);
if (nowWeek == Calendar.SUNDAY) {
    nowWeek = 6;
} else {
    nowWeek -= 2;
return getDateByDaysLate(week - nowWeek, cal.getTime());
...
DategetDateByYearAndWeekNum(int year, int weekNum)
get Date By Year And Week Num 
Calendar c = new GregorianCalendar();
c.set(Calendar.YEAR, year);
c.set(Calendar.WEEK_OF_YEAR, weekNum);
return c.getTime();
DategetDateForCurrentWeekDay(int day)
get Date For Current Week Day 
Calendar cal = Calendar.getInstance();
cal.set(Calendar.HOUR_OF_DAY, 0); 
cal.clear(Calendar.MINUTE);
cal.clear(Calendar.SECOND);
cal.clear(Calendar.MILLISECOND);
cal.set(Calendar.DAY_OF_WEEK, day);
return cal.getTime();
DategetDateOfWeek(int week)
get Date Of Week 
return getDateOfWeek(new Date(), week);
DategetDateOfWeek(int year, int weekOfYear, int i)
get Date Of Week 
Calendar day = getCalendar();
day.set(Calendar.YEAR, year);
day.set(Calendar.WEEK_OF_YEAR, weekOfYear + 1);
day.setFirstDayOfWeek(FIRST_DAY_OF_WEEK);
switch (i) {
case 0:
    day.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
    break;
...
DategetDateOfYearWeek(int yearNum, int weekNum, int dayOfWeek)
get Date Of Year Week 
Calendar cal = Calendar.getInstance();
cal.setFirstDayOfWeek(Calendar.MONDAY);
cal.set(Calendar.DAY_OF_WEEK, dayOfWeek);
cal.setMinimalDaysInFirstWeek(DAYS_OF_A_WEEK);
cal.set(Calendar.YEAR, yearNum);
cal.set(Calendar.WEEK_OF_YEAR, weekNum);
return cal.getTime();
intgetDateWeek(String date)
get Date Week 
Calendar calendar = toCalendar(date + " 00:00:01");
int week = calendar.get(Calendar.DAY_OF_WEEK);
week = week - 1;
if (week == 0)
    week = 7;
return week;
longgetDay(long date, int startOfWeek, int increment)
get Day 
Calendar calendar = CALENDAR;
synchronized (calendar) {
    calendar.setTimeInMillis(date);
    int day = calendar.get(Calendar.DAY_OF_WEEK);
    while (day != startOfWeek) {
        calendar.add(Calendar.DATE, increment);
        day = calendar.get(Calendar.DAY_OF_WEEK);
    return startOfDayInMillis(calendar.getTimeInMillis());