Java Utililty Methods LocalDate Calculate

List of utility methods to do LocalDate Calculate

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Description

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

Method

LocalDategetDate(Console console, Function validator)
get Date 
if (validator == null)
    validator = value -> true;
String dateStr;
LocalDate localDate;
do {
    dateStr = getString(console, value -> datePattern.matcher(value).matches());
    try {
        localDate = LocalDate.parse(dateStr, dateFormatter);
...
DategetDate(final LocalDate localDate)
get Date 
Instant instant = localDate.atStartOfDay().atZone(ZoneId.systemDefault()).toInstant();
return Date.from(instant);
DategetDate(LocalDate d, String tzId)
get Date 
return getDate(d.atStartOfDay(), tzId);
StringgetDateCriteria(LocalDate startDate, LocalDate endDate)
get Date Criteria 
return "startDate = " + startDate.format(formatter) + " and endDate = " + endDate.format(formatter);
DategetDateStart(LocalDate localDate)
get Date Start 
LocalDateTime localDateTime = localDate.atStartOfDay();
ZonedDateTime zonedDateTime = localDateTime.atZone(ZoneId.of("Asia/Shanghai"));
return Date.from(zonedDateTime.toInstant());
LocalDategetEndDateOfMonth(LocalDate date)
get End Date Of Month 
int[] ends = { 31, 30, 29, 28 };
for (int e : ends) {
    try {
        LocalDate eom = date.withDayOfMonth(e);
        return eom;
    } catch (Exception ex) {
return null;
LocalDategetFirstDayOfTheMonth(final LocalDate date)
Returns a leveled date representing the first day of the month based on a specified date. 
return date.with(TemporalAdjusters.firstDayOfMonth());
intgetLastDayInMonth(LocalDate localDate)
get Last Day In Month 
LocalDate result = localDate.with(TemporalAdjusters.lastDayOfMonth());
return result.getDayOfMonth();
LocalDategetLastDayOfTheQuarter(final LocalDate date)
Returns a LocalDate date representing the last day of the quarter based on a specified date. 
Objects.requireNonNull(date);
LocalDate result;
LocalDate[] bounds = getQuarterBounds(date);
if (date.compareTo(bounds[2]) < 0) {
    result = bounds[1];
} else if (date.compareTo(bounds[4]) < 0) {
    result = bounds[3];
} else if (date.compareTo(bounds[6]) < 0) {
...
LocalDategetLocalDateBydayAndWeek(LocalDate localDate, int weekNumber, int dayNumber)
get Local Date Byday And Week 
return localDate.with(TemporalAdjusters.dayOfWeekInMonth(weekNumber, DayOfWeek.of(dayNumber)));