Java Utililty Methods Day of Week

List of utility methods to do Day of Week

  1. HOME
  2. Java
  3. D
  4. Day of Week

Description

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

Method

DatenextWeek(final Date date)

nextWeek

Calendar cal = Calendar.getInstance();
cal.setTime(date);
cal.add(Calendar.DAY_OF_YEAR, 7);
return cal.getTime();
longpreviousWeek(long date)
Returns the week before date. 
return addDays(date, -7);
longpreviousWeek(long date)
Returns the week before date. 
return addDays(date, -7);
DatestartOfWeek(Date date)
start Of Week 
if (date == null) {
    return date;
Calendar c = Calendar.getInstance();
c.setTime(date);
System.out.println("Today:  " + c.getTime());
c.setTime(date);
c.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
...
DatetoStartWeek(Date date)
set the date at the first day of the week.o 
Calendar cal = Calendar.getInstance();
cal.setTime(date);
cal.set(Calendar.DAY_OF_WEEK, 3);
return cal.getTime();
DatetoWeekDayUS(Date date, int expect)
to Week Day US 
int day = getWeekDay(date);
return adjustDate(date, 0, 0, expect - day);
DatetruncDateToIsoWeek(Date d)
truncate the date to week (does not depend on locale, monday is always the first day in a week) 
if (d == null) {
    return null;
Calendar c = Calendar.getInstance();
c.setTime(d);
truncCalendarToIsoWeek(c, -1);
return c.getTime();
intweekCount(Date start, Date end)
week Count 
final Calendar startCalendar = Calendar.getInstance();
startCalendar.setTime(start);
final Calendar endCalendar = Calendar.getInstance();
endCalendar.setTime(end);
final int startWeekofYear = startCalendar.get(Calendar.WEEK_OF_YEAR);
final int endWeekofYear = endCalendar.get(Calendar.WEEK_OF_YEAR);
int count = endWeekofYear - startWeekofYear + 1;
if (Calendar.SUNDAY != startCalendar.get(Calendar.DAY_OF_WEEK)) {
...
intweekDay(final Date date)
week Day 
return fromDateToCalendar(date).get(DAY_OF_WEEK);
intweekDaysBetween(final Date a, final Date b)
Get week days between two dates inclusive. 
int ans = 0;
final Calendar start = Calendar.getInstance();
final Calendar end = Calendar.getInstance();
if (compareDates(a, b) < 0) {
    start.setTime(a);
    end.setTime(b);
} else {
    start.setTime(b);
...