Added in API level 26

MinguoChronology

class MinguoChronology : AbstractChronology, Serializable
kotlin.Any
   ↳ java.time.chrono.AbstractChronology
   ↳ java.time.chrono.MinguoChronology

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.

Summary

Public methods
MinguoDate!
date(prolepticYear: Int, month: Int, dayOfMonth: Int)

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

MinguoDate!
date(era: Era!, yearOfEra: Int, month: Int, dayOfMonth: Int)

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

MinguoDate!
date(temporal: TemporalAccessor!)

Obtains a local date in this chronology from another temporal object.

MinguoDate!
dateEpochDay(epochDay: Long)

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

MinguoDate!

Obtains the current local date in this chronology from the system clock in the default time-zone.

MinguoDate!
dateNow(clock: Clock!)

Obtains the current local date in this chronology from the specified clock.

MinguoDate!
dateNow(zone: ZoneId!)

Obtains the current local date in this chronology from the system clock in the specified time-zone.

MinguoDate!
dateYearDay(prolepticYear: Int, dayOfYear: Int)

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

MinguoDate!
dateYearDay(era: Era!, yearOfEra: Int, dayOfYear: Int)

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

MinguoEra!
eraOf(eraValue: Int)

Creates the chronology era object from the numeric value.

MutableList<Era!>!

Gets the list of eras for the chronology.

String!

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

String!

Gets the ID of the chronology - 'Minguo'.

Boolean
isLeapYear(prolepticYear: Long)

Checks if the specified year is a leap year.

ChronoLocalDateTime<MinguoDate!>!

Obtains a local date-time in this chronology from another temporal object.

Int
prolepticYear(era: Era!, yearOfEra: Int)

Calculates the proleptic-year given the era and year-of-era.

ValueRange!
range(field: ChronoField!)

Gets the range of valid values for the specified field.

MinguoDate!
resolveDate(fieldValues: MutableMap<TemporalField!, Long!>!, resolverStyle: ResolverStyle!)

Resolves parsed ChronoField values into a date during parsing.

ChronoZonedDateTime<MinguoDate!>!
zonedDateTime(instant: Instant!, zone: ZoneId!)

Obtains a ChronoZonedDateTime in this chronology from an Instant.

ChronoZonedDateTime<MinguoDate!>!

Obtains a ChronoZonedDateTime in this chronology from another temporal object.

Inherited functions
Properties
static MinguoChronology!

Singleton instance for the Minguo chronology.

Public methods

date

Added in API level 26
fun date(
    prolepticYear: Int,
    month: Int,
    dayOfMonth: Int
): MinguoDate!

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

Parameters
prolepticYear Int: the proleptic-year
month Int: the month-of-year
dayOfMonth Int: the day-of-month
Return
MinguoDate! the Minguo local date, not null
Exceptions
java.time.DateTimeException if unable to create the date

date

Added in API level 26
fun date(
    era: Era!,
    yearOfEra: Int,
    month: Int,
    dayOfMonth: Int
): MinguoDate!

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

Parameters
era Era!: the Minguo era, not null
yearOfEra Int: the year-of-era
month Int: the month-of-year
dayOfMonth Int: the day-of-month
Return
MinguoDate! the Minguo local date, not null
Exceptions
java.lang.ClassCastException if the era is not a MinguoEra
java.time.DateTimeException if unable to create the date

date

Added in API level 26
fun date(temporal: TemporalAccessor!): MinguoDate!

Obtains a local date in this chronology from another temporal object.

This obtains a date in this chronology based on the specified temporal. A TemporalAccessor represents an arbitrary set of date and time information, which this factory converts to an instance of ChronoLocalDate.

The conversion typically uses the EPOCH_DAY field, which is standardized across calendar systems.

This method matches the signature of the functional interface TemporalQuery allowing it to be used as a query via method reference, aChronology::date.

Parameters
temporal TemporalAccessor!: the temporal object to convert, not null
Return
MinguoDate! the local date in this chronology, not null
Exceptions
java.time.DateTimeException if unable to create the date

dateEpochDay

Added in API level 26
fun dateEpochDay(epochDay: Long): MinguoDate!

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

Parameters
epochDay Long: the epoch day
Return
MinguoDate! the Minguo local date, not null
Exceptions
java.time.DateTimeException if unable to create the date

dateNow

Added in API level 26
fun dateNow(): MinguoDate!

Obtains the current local date in this chronology from the system clock in the default time-zone.

This will query the system clock in the default time-zone to obtain the current date.

Using this method will prevent the ability to use an alternate clock for testing because the clock is hard-coded.

Return
MinguoDate! the current local date using the system clock and default time-zone, not null
Exceptions
java.time.DateTimeException if unable to create the date

dateNow

Added in API level 26
fun dateNow(clock: Clock!): MinguoDate!

Obtains the current local date in this chronology from the specified clock.

This will query the specified clock to obtain the current date - today. Using this method allows the use of an alternate clock for testing. The alternate clock may be introduced using dependency injection.

Parameters
clock Clock!: the clock to use, not null
Return
MinguoDate! the current local date, not null
Exceptions
java.time.DateTimeException if unable to create the date

dateNow

Added in API level 26
fun dateNow(zone: ZoneId!): MinguoDate!

Obtains the current local date in this chronology from the system clock in the specified time-zone.

This will query the system clock to obtain the current date. Specifying the time-zone avoids dependence on the default time-zone.

Using this method will prevent the ability to use an alternate clock for testing because the clock is hard-coded.

Parameters
zone ZoneId!: the zone ID to use, not null
Return
MinguoDate! the current local date using the system clock, not null
Exceptions
java.time.DateTimeException if unable to create the date

dateYearDay

Added in API level 26
fun dateYearDay(
    prolepticYear: Int,
    dayOfYear: Int
): MinguoDate!

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

Parameters
prolepticYear Int: the proleptic-year
dayOfYear Int: the day-of-year
Return
MinguoDate! the Minguo local date, not null
Exceptions
java.time.DateTimeException if unable to create the date

dateYearDay

Added in API level 26
fun dateYearDay(
    era: Era!,
    yearOfEra: Int,
    dayOfYear: Int
): MinguoDate!

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

Parameters
era Era!: the Minguo era, not null
yearOfEra Int: the year-of-era
dayOfYear Int: the day-of-year
Return
MinguoDate! the Minguo local date, not null
Exceptions
java.lang.ClassCastException if the era is not a MinguoEra
java.time.DateTimeException if unable to create the date

eraOf

Added in API level 26
fun eraOf(eraValue: Int): MinguoEra!

Creates the chronology era object from the numeric value.

The era is, conceptually, the largest division of the time-line. Most calendar systems have a single epoch dividing the time-line into two eras. However, some have multiple eras, such as one for the reign of each leader. The exact meaning is determined by the chronology according to the following constraints.

The era in use at 1970-01-01 must have the value 1. Later eras must have sequentially higher values. Earlier eras must have sequentially lower values. Each chronology must refer to an enum or similar singleton to provide the era values.

This method returns the singleton era of the correct type for the specified era value.

Parameters
eraValue Int: the era value
Return
MinguoEra! the calendar system era, not null
Exceptions
java.time.DateTimeException if unable to create the era

eras

Added in API level 26
fun eras(): MutableList<Era!>!

Gets the list of eras for the chronology.

Most calendar systems have an era, within which the year has meaning. If the calendar system does not support the concept of eras, an empty list must be returned.

Return
MutableList<Era!>! the list of eras for the chronology, may be immutable, not null

getCalendarType

Added in API level 26
fun getCalendarType(): String!

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'.

Return
String! the calendar system type - 'roc'

See Also

getId

Added in API level 26
fun getId(): String!

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).

Return
String! the chronology ID - 'Minguo'

isLeapYear

Added in API level 26
fun isLeapYear(prolepticYear: Long): Boolean

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.

Parameters
prolepticYear Long: the proleptic-year to check, not validated for range
Return
Boolean true if the year is a leap year

localDateTime

Added in API level 26
fun localDateTime(temporal: TemporalAccessor!): ChronoLocalDateTime<MinguoDate!>!

Obtains a local date-time in this chronology from another temporal object.

This obtains a date-time in this chronology based on the specified temporal. A TemporalAccessor represents an arbitrary set of date and time information, which this factory converts to an instance of ChronoLocalDateTime.

The conversion extracts and combines the ChronoLocalDate and the LocalTime from the temporal object. Implementations are permitted to perform optimizations such as accessing those fields that are equivalent to the relevant objects. The result uses this chronology.

This method matches the signature of the functional interface TemporalQuery allowing it to be used as a query via method reference, aChronology::localDateTime.

Parameters
temporal TemporalAccessor!: the temporal object to convert, not null
Return
ChronoLocalDateTime<MinguoDate!>! the local date-time in this chronology, not null
Exceptions
java.time.DateTimeException if unable to create the date-time

prolepticYear

Added in API level 26
fun prolepticYear(
    era: Era!,
    yearOfEra: Int
): Int

Calculates the proleptic-year given the era and year-of-era.

This combines the era and year-of-era into the single proleptic-year field.

If the chronology makes active use of eras, such as JapaneseChronology then the year-of-era will be validated against the era. For other chronologies, validation is optional.

Parameters
era Era!: the era of the correct type for the chronology, not null
yearOfEra Int: the chronology year-of-era
Return
Int the proleptic-year
Exceptions
java.lang.ClassCastException if the era is not of the correct type for the chronology
java.time.DateTimeException if unable to convert to a proleptic-year, such as if the year is invalid for the era

range

Added in API level 26
fun range(field: ChronoField!): ValueRange!

Gets the range of valid values for the specified field.

All fields can be expressed as a long integer. This method returns an object that describes the valid range for that value.

Note that the result only describes the minimum and maximum valid values and it is important not to read too much into them. For example, there could be values within the range that are invalid for the field.

This method will return a result whether or not the chronology supports the field.

Parameters
field ChronoField!: the field to get the range for, not null
Return
ValueRange! the range of valid values for the field, not null
Exceptions
java.time.DateTimeException if the range for the field cannot be obtained

resolveDate

Added in API level 26
fun resolveDate(
    fieldValues: MutableMap<TemporalField!, Long!>!,
    resolverStyle: ResolverStyle!
): MinguoDate!

Resolves parsed ChronoField values into a date during parsing.

Most TemporalField implementations are resolved using the resolve method on the field. By contrast, the ChronoField class defines fields that only have meaning relative to the chronology. As such, ChronoField date fields are resolved here in the context of a specific chronology.

ChronoField instances are resolved by this method, which may be overridden in subclasses.

  • EPOCH_DAY - If present, this is converted to a date and all other date fields are then cross-checked against the date.
  • PROLEPTIC_MONTH - If present, then it is split into the YEAR and MONTH_OF_YEAR. If the mode is strict or smart then the field is validated.
  • YEAR_OF_ERA and ERA - If both are present, then they are combined to form a YEAR. In lenient mode, the YEAR_OF_ERA range is not validated, in smart and strict mode it is. The ERA is validated for range in all three modes. If only the YEAR_OF_ERA is present, and the mode is smart or lenient, then the last available era is assumed. In strict mode, no era is assumed and the YEAR_OF_ERA is left untouched. If only the ERA is present, then it is left untouched.
  • YEAR, MONTH_OF_YEAR and DAY_OF_MONTH - If all three are present, then they are combined to form a date. In all three modes, the YEAR is validated. If the mode is smart or strict, then the month and day are validated. If the mode is lenient, then the date is combined in a manner equivalent to creating a date on the first day of the first month in the requested year, then adding the difference in months, then the difference in days. If the mode is smart, and the day-of-month is greater than the maximum for the year-month, then the day-of-month is adjusted to the last day-of-month. If the mode is strict, then the three fields must form a valid date.
  • YEAR and DAY_OF_YEAR - If both are present, then they are combined to form a date. In all three modes, the YEAR is validated. If the mode is lenient, then the date is combined in a manner equivalent to creating a date on the first day of the requested year, then adding the difference in days. If the mode is smart or strict, then the two fields must form a valid date.
  • YEAR, MONTH_OF_YEAR, ALIGNED_WEEK_OF_MONTH and ALIGNED_DAY_OF_WEEK_IN_MONTH - If all four are present, then they are combined to form a date. In all three modes, the YEAR is validated. If the mode is lenient, then the date is combined in a manner equivalent to creating a date on the first day of the first month in the requested year, then adding the difference in months, then the difference in weeks, then in days. If the mode is smart or strict, then the all four fields are validated to their outer ranges. The date is then combined in a manner equivalent to creating a date on the first day of the requested year and month, then adding the amount in weeks and days to reach their values. If the mode is strict, the date is additionally validated to check that the day and week adjustment did not change the month.
  • YEAR, MONTH_OF_YEAR, ALIGNED_WEEK_OF_MONTH and DAY_OF_WEEK - If all four are present, then they are combined to form a date. The approach is the same as described above for years, months and weeks in ALIGNED_DAY_OF_WEEK_IN_MONTH. The day-of-week is adjusted as the next or same matching day-of-week once the years, months and weeks have been handled.
  • YEAR, ALIGNED_WEEK_OF_YEAR and ALIGNED_DAY_OF_WEEK_IN_YEAR - If all three are present, then they are combined to form a date. In all three modes, the YEAR is validated. If the mode is lenient, then the date is combined in a manner equivalent to creating a date on the first day of the requested year, then adding the difference in weeks, then in days. If the mode is smart or strict, then the all three fields are validated to their outer ranges. The date is then combined in a manner equivalent to creating a date on the first day of the requested year, then adding the amount in weeks and days to reach their values. If the mode is strict, the date is additionally validated to check that the day and week adjustment did not change the year.
  • YEAR, ALIGNED_WEEK_OF_YEAR and DAY_OF_WEEK - If all three are present, then they are combined to form a date. The approach is the same as described above for years and weeks in ALIGNED_DAY_OF_WEEK_IN_YEAR. The day-of-week is adjusted as the next or same matching day-of-week once the years and weeks have been handled.

The default implementation is suitable for most calendar systems. If java.time.temporal.ChronoField#YEAR_OF_ERA is found without an java.time.temporal.ChronoField#ERA then the last era in eras() is used. The implementation assumes a 7 day week, that the first day-of-month has the value 1, that first day-of-year has the value 1, and that the first of the month and year always exists.

Parameters
fieldValues MutableMap<TemporalField!, Long!>!: the map of fields to values, which can be updated, not null
resolverStyle ResolverStyle!: the requested type of resolve, not null
Return
MinguoDate! the resolved date, null if insufficient information to create a date
Exceptions
java.time.DateTimeException if the date cannot be resolved, typically because of a conflict in the input data

zonedDateTime

Added in API level 26
fun zonedDateTime(
    instant: Instant!,
    zone: ZoneId!
): ChronoZonedDateTime<MinguoDate!>!

Obtains a ChronoZonedDateTime in this chronology from an Instant.

This obtains a zoned date-time with the same instant as that specified.

Parameters
instant Instant!: the instant to create the date-time from, not null
zone ZoneId!: the time-zone, not null
Return
ChronoZonedDateTime<MinguoDate!>! the zoned date-time, not null
Exceptions
java.time.DateTimeException if the result exceeds the supported range

zonedDateTime

Added in API level 26
fun zonedDateTime(temporal: TemporalAccessor!): ChronoZonedDateTime<MinguoDate!>!

Obtains a ChronoZonedDateTime in this chronology from another temporal object.

This obtains a zoned date-time in this chronology based on the specified temporal. A TemporalAccessor represents an arbitrary set of date and time information, which this factory converts to an instance of ChronoZonedDateTime.

The conversion will first obtain a ZoneId from the temporal object, falling back to a ZoneOffset if necessary. It will then try to obtain an Instant, falling back to a ChronoLocalDateTime if necessary. The result will be either the combination of ZoneId or ZoneOffset with Instant or ChronoLocalDateTime. Implementations are permitted to perform optimizations such as accessing those fields that are equivalent to the relevant objects. The result uses this chronology.

This method matches the signature of the functional interface TemporalQuery allowing it to be used as a query via method reference, aChronology::zonedDateTime.

Parameters
temporal TemporalAccessor!: the temporal object to convert, not null
Return
ChronoZonedDateTime<MinguoDate!>! the zoned date-time in this chronology, not null
Exceptions
java.time.DateTimeException if unable to create the date-time

Properties

INSTANCE

Added in API level 26
static val INSTANCE: MinguoChronology!

Singleton instance for the Minguo chronology.