Example usage for java.time.temporal TemporalAdjusters nextOrSame

Introduction

In this page you can find the example usage for java.time.temporal TemporalAdjusters nextOrSame.

Prototype

public static TemporalAdjuster nextOrSame(DayOfWeek dayOfWeek) 

Source Link

Document

Returns the next-or-same day-of-week adjuster, which adjusts the date to the first occurrence of the specified day-of-week after the date being adjusted unless it is already on that day in which case the same object is returned.

Usage

From source file:Main.java

/**
 * Gets the next or same closest date from the specified days in
 * {@code daysOfWeek List} at specified {@code hour} and {@code min}.
 * /*from www .  ja v  a2s  .co  m*/
 * @param daysOfWeek
 *          the days of week
 * @param hour
 *          the hour
 * @param min
 *          the min
 * @return the next or same date from the days of week at specified time
 * @throws IllegalArgumentException
 *           if the {@code daysOfWeek List} is empty.
 */
public static LocalDateTime getNextClosestDateTime(List<DayOfWeek> daysOfWeek, int hour, int min)
        throws IllegalArgumentException {
    if (daysOfWeek.isEmpty()) {
        throw new IllegalArgumentException("daysOfWeek should not be empty.");
    }

    final LocalDateTime dateNow = LocalDateTime.now();
    final LocalDateTime dateNowWithDifferentTime = dateNow.withHour(hour).withMinute(min).withSecond(0);

    // @formatter:off
    return daysOfWeek.stream().map(d -> dateNowWithDifferentTime.with(TemporalAdjusters.nextOrSame(d)))
            .filter(d -> d.isAfter(dateNow)).min(Comparator.naturalOrder())
            .orElse(dateNowWithDifferentTime.with(TemporalAdjusters.next(daysOfWeek.get(0))));
    // @formatter:on
}

---