Java Utililty Methods Day From

List of utility methods to do Day From

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Description

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

Method

longdayStartTime(int day)
day Start Time 
return ((long) day) * DAY_SECS;
floatdistanceToNowInDaysIgnoreTime(Date date)
distance To Now In Days Ignore Time 
return dateDiffInDaysIgnoreTime(date, new Date());
booleanequalsDay(final Date date1, final Date date2)
equals Day 
final Calendar c1 = Calendar.getInstance();
c1.setTime(date1);
final Calendar c2 = Calendar.getInstance();
c2.setTime(date2);
return c1.get(Calendar.YEAR) == c2.get(Calendar.YEAR) && c1.get(Calendar.MONTH) == c2.get(Calendar.MONTH)
        && c1.get(Calendar.DAY_OF_MONTH) == c2.get(Calendar.DAY_OF_MONTH);
DateexplDay(Date date)
expl Day 
explCalendar.setTime(date);
explCalendar.set(Calendar.HOUR_OF_DAY, 0);
explCalendar.set(Calendar.MINUTE, 0);
explCalendar.set(Calendar.SECOND, 0);
explCalendar.set(Calendar.MILLISECOND, 0);
return explCalendar.getTime();
DatefirstDayOfCentury(final int century)
first Day Of Century 
return firstDayOfYear(firstYearOfCentury(century));
Dateget23HourOfDay(Date date)
get Hour Of Day 
Calendar c = Calendar.getInstance();
c.setTime(date);
c.set(Calendar.HOUR, 23);
Date date23 = c.getTime();
return date23;
intgetAge(Date birthDay)
get Age 
Calendar cal = Calendar.getInstance();
if (cal.before(birthDay)) {
    throw new IllegalArgumentException("The birthDay is before Now.It's unbelievable!");
int yearNow = cal.get(Calendar.YEAR);
int monthNow = cal.get(Calendar.MONTH);
int dayOfMonthNow = cal.get(Calendar.DAY_OF_MONTH);
cal.setTime(birthDay);
...
DategetBeforeDate_(Date date, int day)
get Before Dat_ 
Calendar cad = Calendar.getInstance();
cad.setTime(date);
cad.add(Calendar.DATE, -day);
return cad.getTime();
ListgetDateByDay(Date date)
get Date By Day 
List<Date> dates = new ArrayList<>();
Calendar c = GregorianCalendar.getInstance();
c.setTime(date);
setTimeToBeginningOfDay(c);
dates.add(c.getTime());
setTimeToEndofDay(c);
dates.add(c.getTime());
return dates;
...
DategetDateByNum(int day)
get Date By Num 
GregorianCalendar gd = new GregorianCalendar(1900, 1, 1);
Date date = gd.getTime();
date = nextDay(date, day);
return date;