How to use

atMonth

method

in

java.time.Year

/**
 * Returns a {@link java.time.YearMonth} of this year and the provided {@link java.time.Month}.
 *
 * @param self  a Year
 * @param month a Month
 * @return a YearMonth
 * @since 2.5.0
 */
public static YearMonth leftShift(final Year self, Month month) {
  return self.atMonth(month);
}

/**
 * Converts the Calendar to a corresponding {@link java.time.YearMonth}. If the Calendar has a different
 * time zone than the system default, the YearMonth will be adjusted into the default time zone.
 *
 * @param self a Calendar
 * @return a YearMonth
 * @since 2.5.0
 */
public static YearMonth toYearMonth(final Calendar self) {
  return toYear(self).atMonth(toMonth(self));
}

return year.atMonth(month)
    .atDay(1)
    .atStartOfDay()
return year.atMonth(month)
    .atEndOfMonth()
    .atTime(LocalTime.MAX)

/**
 * Gets a window of time on this calendar defined by the specified period. The window of time
 * will include only the events in this calendar that occur in the specified period.
 * @param year the year during which the events in this calendar occur.
 * @return the window of time including the events in this calendar occurring in the given period.
 */
public CalendarTimeWindow in(final Year year) {
 return between(year.atDay(1), year.atMonth(DECEMBER).atEndOfMonth());
}

@Test
public void testObjectToYear() throws Exception {
  ZoneId zoneId = ZoneId.systemDefault();
  Date now = new Date();
  Year year = Year.from(now.toInstant().atZone(zoneId));
  testObjectToYear(null, null);
  testObjectToYear(year, year);
  testObjectToYear(year.atMonth(6).atEndOfMonth().atTime(1, 0).atZone(zoneId), year);
  testObjectToYear(now, year);
  testObjectToYear(year.getValue(), year);
  try {
    testObjectToYear("a string", year);
    fail();
  } catch (IllegalArgumentException e) {
    // expected
  }
}