Module java.base

Package java.time.chrono

Class MinguoChronology

java.lang.Object

java.time.chrono.AbstractChronology

java.time.chrono.MinguoChronology

All Implemented Interfaces:

Serializable, Comparable<Chronology>, Chronology

public final class MinguoChronology
extends AbstractChronology
implements Serializable

The Minguo calendar system.

This chronology defines the rules of the Minguo calendar system. This calendar system is primarily used in the Republic of China, often known as Taiwan. Dates are aligned such that 0001-01-01 (Minguo) is 1912-01-01 (ISO).

The fields are defined as follows:

• era - There are two eras, the current 'Republic' (ERA_ROC) and the previous era (ERA_BEFORE_ROC).
• year-of-era - The year-of-era for the current era increases uniformly from the epoch at year one. For the previous era the year increases from one as time goes backwards. The value for the current era is equal to the ISO proleptic-year minus 1911.
• proleptic-year - The proleptic year is the same as the year-of-era for the current era. For the previous era, years have zero, then negative values. The value is equal to the ISO proleptic-year minus 1911.
• month-of-year - The Minguo month-of-year exactly matches ISO.
• day-of-month - The Minguo day-of-month exactly matches ISO.
• day-of-year - The Minguo day-of-year exactly matches ISO.
• leap-year - The Minguo leap-year pattern exactly matches ISO, such that the two calendars are never out of step.

Implementation Requirements:

This class is immutable and thread-safe.

Since:

1.8

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static MinguoChronology	INSTANCE	Singleton instance for the Minguo chronology.

Method Summary

Modifier and Type	Method	Description
MinguoDate	date(int prolepticYear, int month, int dayOfMonth)	Obtains a local date in Minguo calendar system from the proleptic-year, month-of-year and day-of-month fields.
MinguoDate	date(Era era, int yearOfEra, int month, int dayOfMonth)	Obtains a local date in Minguo calendar system from the era, year-of-era, month-of-year and day-of-month fields.
MinguoDate	dateEpochDay(long epochDay)	Obtains a local date in the Minguo calendar system from the epoch-day.
MinguoDate	dateYearDay(int prolepticYear, int dayOfYear)	Obtains a local date in Minguo calendar system from the proleptic-year and day-of-year fields.
MinguoDate	dateYearDay(Era era, int yearOfEra, int dayOfYear)	Obtains a local date in Minguo calendar system from the era, year-of-era and day-of-year fields.
String	getCalendarType()	Gets the calendar type of the underlying calendar system - 'roc'.
String	getId()	Gets the ID of the chronology - 'Minguo'.
boolean	isLeapYear(long prolepticYear)	Checks if the specified year is a leap year.

Methods declared in class java.time.chrono.AbstractChronology

compareTo, equals, hashCode, resolveDate, toString

Methods declared in interface java.time.chrono.Chronology

date, dateNow, dateNow, dateNow, epochSecond, epochSecond, eraOf, eras, getDisplayName, localDateTime, period, prolepticYear, range, zonedDateTime, zonedDateTime

Methods declared in class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

INSTANCE

public static final MinguoChronology INSTANCE

Singleton instance for the Minguo chronology.

Method Detail

getId

public String getId()

Gets the ID of the chronology - 'Minguo'.

The ID uniquely identifies the Chronology. It can be used to lookup the Chronology using Chronology.of(String).

Specified by:

getId in interface Chronology

Returns:

the chronology ID - 'Minguo'

See Also:

getCalendarType()

getCalendarType

public String getCalendarType()

Gets the calendar type of the underlying calendar system - 'roc'.

The calendar type is an identifier defined by the Unicode Locale Data Markup Language (LDML) specification. It can be used to lookup the Chronology using Chronology.of(String). It can also be used as part of a locale, accessible via Locale.getUnicodeLocaleType(String) with the key 'ca'.

Specified by:

getCalendarType in interface Chronology

Returns:

the calendar system type - 'roc'

See Also:

getId()

date

public MinguoDate date(Era era,
                       int yearOfEra,
                       int month,
                       int dayOfMonth)

Obtains a local date in Minguo calendar system from the era, year-of-era, month-of-year and day-of-month fields.

Specified by:

date in interface Chronology

Parameters:

era - the Minguo era, not null

yearOfEra - the year-of-era

month - the month-of-year

dayOfMonth - the day-of-month

Returns:

the Minguo local date, not null

Throws:

DateTimeException - if unable to create the date

ClassCastException - if the era is not a MinguoEra

date

public MinguoDate date(int prolepticYear,
                       int month,
                       int dayOfMonth)

Obtains a local date in Minguo calendar system from the proleptic-year, month-of-year and day-of-month fields.

Specified by:

date in interface Chronology

Parameters:

prolepticYear - the proleptic-year

month - the month-of-year

dayOfMonth - the day-of-month

Returns:

the Minguo local date, not null

Throws:

DateTimeException - if unable to create the date

dateYearDay

public MinguoDate dateYearDay(Era era,
                              int yearOfEra,
                              int dayOfYear)

Obtains a local date in Minguo calendar system from the era, year-of-era and day-of-year fields.

Specified by:

dateYearDay in interface Chronology

Parameters:

era - the Minguo era, not null

yearOfEra - the year-of-era

dayOfYear - the day-of-year

Returns:

the Minguo local date, not null

Throws:

DateTimeException - if unable to create the date

ClassCastException - if the era is not a MinguoEra

dateYearDay

public MinguoDate dateYearDay(int prolepticYear,
                              int dayOfYear)

Obtains a local date in Minguo calendar system from the proleptic-year and day-of-year fields.

Specified by:

dateYearDay in interface Chronology

Parameters:

prolepticYear - the proleptic-year

dayOfYear - the day-of-year

Returns:

the Minguo local date, not null

Throws:

DateTimeException - if unable to create the date

dateEpochDay

public MinguoDate dateEpochDay(long epochDay)

Obtains a local date in the Minguo calendar system from the epoch-day.

Specified by:

dateEpochDay in interface Chronology

Parameters:

epochDay - the epoch day

Returns:

the Minguo local date, not null

Throws:

DateTimeException - if unable to create the date

isLeapYear

public boolean isLeapYear(long prolepticYear)

Checks if the specified year is a leap year.

Minguo 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.

Specified by:

isLeapYear in interface Chronology

Parameters:

prolepticYear - the proleptic-year to check, not validated for range

Returns:

true if the year is a leap year