Examples of java.time.Period

java.time.Period
A date-based amount of time in the ISO-8601 calendar system, such as '2 years, 3 months and 4 days'.
This class models a quantity or amount of time in terms of years, months and days. See {@link Duration} for the time-based equivalent to this class.
Durations and periods differ in their treatment of daylight savings time when added to {@link ZonedDateTime}. A {@code Duration} will add an exactnumber of seconds, thus a duration of one day is always exactly 24 hours. By contrast, a {@code Period} will add a conceptual day, trying to maintainthe local time.
For example, consider adding a period of one day and a duration of one day to 18:00 on the evening before a daylight savings gap. The {@code Period} will addthe conceptual day and result in a {@code ZonedDateTime} at 18:00 the following day.By contrast, the {@code Duration} will add exactly 24 hours, resulting in a{@code ZonedDateTime} at 19:00 the following day (assuming a one hour DST gap).
The supported units of a period are {@link ChronoUnit#YEARS YEARS}, {@link ChronoUnit#MONTHS MONTHS} and {@link ChronoUnit#DAYS DAYS}. All three fields are always present, but may be set to zero.
The ISO-8601 calendar system is the modern civil calendar system used today in most of the world. It is equivalent to the proleptic Gregorian calendar system, in which today's rules for leap years are applied for all time.
The period is modeled as a directed amount of time, meaning that individual parts of the period may be negative.
This is a value-based class; use of identity-sensitive operations (including reference equality ( {@code ==}), identity hash code, or synchronization) on instances of {@code Period} may have unpredictable results and should be avoided.The {@code equals} method should be used for comparisons. @implSpec This class is immutable and thread-safe. @since 1.8

        return (ChronoLocalDateTime<MinguoDate>)super.atTime(localTime);
    }


    @Override
    public ChronoPeriod until(ChronoLocalDate endDate) {
        Period period = isoDate.until(endDate);
        return getChronology().period(period.getYears(), period.getMonths(), period.getDays());
    }

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        return (ChronoLocalDateTime<ThaiBuddhistDate>) super.atTime(localTime);
    }


    @Override
    public ChronoPeriod until(ChronoLocalDate endDate) {
        Period period = isoDate.until(endDate);
        return getChronology().period(period.getYears(), period.getMonths(), period.getDays());
    }

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            } else if (type == ZoneId.class) {
                ZoneId offsetTime = ZoneId.of(text);
                
                return (T) offsetTime;
            } else if (type == Period.class) {
                Period period = Period.parse(text);
                
                return (T) period;
            } else if (type == Duration.class) {
                Duration duration = Duration.parse(text);

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   * timeline, as opposed to other classes (above) being a point on a timeline.
   */
  @Test
  public void testPeriodToAlterDate() {
    // 3 years, 2 months, 1 day
    final Period period = Period.of(3, 2, 1);
    // Components of a Period are represented by ChronoUnit values
    assertThat(period.get(ChronoUnit.DAYS), is(1L));


    // You can modify the values of a Date using a Period
    final LocalDate localDate = LocalDate.of(2014, Month.SEPTEMBER, 1);
    final LocalDate futureDate = localDate.plus(period);
    assertThat(futureDate, is(LocalDate.of(2017, Month.NOVEMBER, 2)));

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