Java Utililty Methods Calendar Day

List of utility methods to do Calendar Day

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Description

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

Method

booleanisSameDay(final Calendar date1, final Calendar date2)
is Same Day 
return getDaysBetween(date1, date2) < miliPerDay;
booleanisSunday(GregorianCalendar date)
is Sunday 
return date.get(Calendar.DAY_OF_WEEK) == Calendar.SUNDAY;
booleanisTheSameDay(Calendar dayOne, Calendar dayTwo)
Check if the calendars are referring to the same day 
boolean result = false;
if (dayOne == null || dayTwo == null) {
    result = false;
} else {
    result = (dayTwo.get(Calendar.DAY_OF_YEAR) == dayOne.get(Calendar.DAY_OF_YEAR))
            && (dayTwo.get(Calendar.YEAR) == dayOne.get(Calendar.YEAR));
return result;
...
booleanisToday(Calendar creationDate)
is Today 
Calendar today = Calendar.getInstance();
if (today.DAY_OF_MONTH == creationDate.DAY_OF_MONTH) {
    if (today.MONTH == creationDate.MONTH) {
        if (today.YEAR == creationDate.YEAR) {
            return true;
return false;
booleanisToday(Calendar date)
is Today 
Calendar now = Calendar.getInstance();
if (date.get(Calendar.DAY_OF_YEAR) != now.get(Calendar.DAY_OF_YEAR))
    return false;
return date.get(Calendar.YEAR) == now.get(Calendar.YEAR);
booleanisToday(Calendar now, Calendar then)
Returns true if the given time is today 
return now.get(Calendar.DAY_OF_MONTH) == then.get(Calendar.DAY_OF_MONTH)
        && now.get(Calendar.MONTH) == then.get(Calendar.MONTH)
        && now.get(Calendar.YEAR) == then.get(Calendar.YEAR);
BooleanisTodayOff(String days, Calendar calendar)
This method is used to check whether the day passed as parameter is an off day. 
Boolean isOff = false;
Integer today = 0;
today = calendar.get(Calendar.DAY_OF_WEEK); 
switch (today) {
case Calendar.SUNDAY:
    if (days.contains("SU")) {
        isOff = true;
    break;
case Calendar.MONDAY:
    if (days.contains("MO")) {
        isOff = true;
    break;
case Calendar.TUESDAY:
    if (days.contains("TU")) {
        isOff = true;
    break;
case Calendar.WEDNESDAY:
    if (days.contains("WE")) {
        isOff = true;
    break;
case Calendar.THURSDAY:
    if (days.contains("TH")) {
        isOff = true;
    break;
case Calendar.FRIDAY:
    if (days.contains("FR")) {
        isOff = true;
    break;
case Calendar.SATURDAY:
    if (days.contains("SA")) {
        isOff = true;
    break;
default:
return isOff;
booleanisWithinDaysFuture(Calendar cal, int days)

Checks if a calendar date is after today and within a number of days in the future. 

if (cal == null) {
    throw new IllegalArgumentException("The date must not be null");
Calendar today = Calendar.getInstance();
Calendar future = Calendar.getInstance();
future.add(Calendar.DAY_OF_YEAR, days);
return (isAfterDay(cal, today) && !isAfterDay(cal, future));
intjulianDay(Calendar calendar)
Calculates the julian day of a Calendar . 
int year = calendar.get(Calendar.YEAR);
int month = calendar.get(Calendar.MONTH);
int day = calendar.get(Calendar.DAY_OF_MONTH);
return julianDay(year, month + 1, day);
IntegerminOfDay(Calendar calendar)
Return the calendars minute count since midnight 
return calendar.get(Calendar.HOUR_OF_DAY * 60 + Calendar.MINUTE);