* This chronology defines the rules of the Thai Buddhist calendar system. * This calendar system is primarily used in Thailand. * Dates are aligned such that {@code 2484-01-01 (Buddhist)} is {@code 1941-01-01 (ISO)}. *
* The fields are defined as follows: *
* The ID uniquely identifies the {@code Chronology}. * It can be used to lookup the {@code Chronology} using {@link Chronology#of(String)}. * * @return the chronology ID - 'ThaiBuddhist' * @see #getCalendarType() */ @Override public String getId() { return "ThaiBuddhist"; } /** * Gets the calendar type of the underlying calendar system - 'buddhist'. *
* The calendar type is an identifier defined by the
* Unicode Locale Data Markup Language (LDML) specification.
* It can be used to lookup the {@code Chronology} using {@link Chronology#of(String)}.
* It can also be used as part of a locale, accessible via
* {@link Locale#getUnicodeLocaleType(String)} with the key 'ca'.
*
* @return the calendar system type - 'buddhist'
* @see #getId()
*/
@Override
public String getCalendarType() {
return "buddhist";
}
//-----------------------------------------------------------------------
/**
* Obtains a local date in Thai Buddhist calendar system from the
* era, year-of-era, month-of-year and day-of-month fields.
*
* @param era the Thai Buddhist era, not null
* @param yearOfEra the year-of-era
* @param month the month-of-year
* @param dayOfMonth the day-of-month
* @return the Thai Buddhist local date, not null
* @throws DateTimeException if unable to create the date
* @throws ClassCastException if the {@code era} is not a {@code ThaiBuddhistEra}
*/
@Override
public ThaiBuddhistDate date(Era era, int yearOfEra, int month, int dayOfMonth) {
return date(prolepticYear(era, yearOfEra), month, dayOfMonth);
}
/**
* Obtains a local date in Thai Buddhist calendar system from the
* proleptic-year, month-of-year and day-of-month fields.
*
* @param prolepticYear the proleptic-year
* @param month the month-of-year
* @param dayOfMonth the day-of-month
* @return the Thai Buddhist local date, not null
* @throws DateTimeException if unable to create the date
*/
@Override
public ThaiBuddhistDate date(int prolepticYear, int month, int dayOfMonth) {
return new ThaiBuddhistDate(LocalDate.of(prolepticYear - YEARS_DIFFERENCE, month, dayOfMonth));
}
/**
* Obtains a local date in Thai Buddhist calendar system from the
* era, year-of-era and day-of-year fields.
*
* @param era the Thai Buddhist era, not null
* @param yearOfEra the year-of-era
* @param dayOfYear the day-of-year
* @return the Thai Buddhist local date, not null
* @throws DateTimeException if unable to create the date
* @throws ClassCastException if the {@code era} is not a {@code ThaiBuddhistEra}
*/
@Override
public ThaiBuddhistDate dateYearDay(Era era, int yearOfEra, int dayOfYear) {
return dateYearDay(prolepticYear(era, yearOfEra), dayOfYear);
}
/**
* Obtains a local date in Thai Buddhist calendar system from the
* proleptic-year and day-of-year fields.
*
* @param prolepticYear the proleptic-year
* @param dayOfYear the day-of-year
* @return the Thai Buddhist local date, not null
* @throws DateTimeException if unable to create the date
*/
@Override
public ThaiBuddhistDate dateYearDay(int prolepticYear, int dayOfYear) {
return new ThaiBuddhistDate(LocalDate.ofYearDay(prolepticYear - YEARS_DIFFERENCE, dayOfYear));
}
/**
* Obtains a local date in the Thai Buddhist calendar system from the epoch-day.
*
* @param epochDay the epoch day
* @return the Thai Buddhist local date, not null
* @throws DateTimeException if unable to create the date
*/
@Override // override with covariant return type
public ThaiBuddhistDate dateEpochDay(long epochDay) {
return new ThaiBuddhistDate(LocalDate.ofEpochDay(epochDay));
}
@Override
public ThaiBuddhistDate dateNow() {
return dateNow(Clock.systemDefaultZone());
}
@Override
public ThaiBuddhistDate dateNow(ZoneId zone) {
return dateNow(Clock.system(zone));
}
@Override
public ThaiBuddhistDate dateNow(Clock clock) {
return date(LocalDate.now(clock));
}
@Override
public ThaiBuddhistDate date(TemporalAccessor temporal) {
if (temporal instanceof ThaiBuddhistDate) {
return (ThaiBuddhistDate) temporal;
}
return new ThaiBuddhistDate(LocalDate.from(temporal));
}
@Override
@SuppressWarnings("unchecked")
public ChronoLocalDateTime
* Thai Buddhist leap years occur exactly in line with ISO leap years.
* This method does not validate the year passed in, and only has a
* well-defined result for years in the supported range.
*
* @param prolepticYear the proleptic-year to check, not validated for range
* @return true if the year is a leap year
*/
@Override
public boolean isLeapYear(long prolepticYear) {
return IsoChronology.INSTANCE.isLeapYear(prolepticYear - YEARS_DIFFERENCE);
}
@Override
public int prolepticYear(Era era, int yearOfEra) {
if (era instanceof ThaiBuddhistEra == false) {
throw new ClassCastException("Era must be BuddhistEra");
}
return (era == ThaiBuddhistEra.BE ? yearOfEra : 1 - yearOfEra);
}
@Override
public ThaiBuddhistEra eraOf(int eraValue) {
return ThaiBuddhistEra.of(eraValue);
}
@Override
public List
* out.writeByte(1); // identifies a Chronology
* out.writeUTF(getId());
*
*
* @return the instance of {@code Ser}, not null
*/
@Override
@java.io.Serial
Object writeReplace() {
return super.writeReplace();
}
/**
* Defend against malicious streams.
*
* @param s the stream to read
* @throws InvalidObjectException always
*/
@java.io.Serial
private void readObject(ObjectInputStream s) throws InvalidObjectException {
throw new InvalidObjectException("Deserialization via serialization delegate");
}
}