Symmetry454Chronology (ThreeTen-Extra 1.3 API)

java.lang.Object
- java.time.chrono.AbstractChronology
- - org.threeten.extra.chrono.Symmetry454Chronology

All Implemented Interfaces:

java.io.Serializable
```
public final class Symmetry454Chronology
extends java.time.chrono.AbstractChronology
implements java.io.Serializable
```
The Symmetry454 calendar system.
This chronology defines the rules of the Symmetry454 calendar system. Dates are aligned such that 0001/01/01 (Sym454) is 0001-01-01 (ISO).
The calendar implemented by this class is proleptic, with January 1st as the start of the year. Each month either has 28 days or 35 days, in an alternating pattern; January has 28 days, February has 35 days and March again has 28 days. Due to this, each quarter consists of 13 weeks.
Normal years thus have 364 days, whereas leap years have an extra week, aptly called leap week, added to the end, extending the year to 371 days.
The fields are defined as follows:
- era - Same eras as used in the Gregorian calendar: 'Before Common Era' (BCE) and 'Common Era' (CE).
- year-of-era - The year-of-era for the current era increases uniformly from the epoch at year 1.
- proleptic-year - The proleptic year is the same as the year-of-era for the current era.
- month-of-year - There are 12 months in an Symmetry454 year, numbered from 1 to 12.
- day-of-month - There are 28 days in a standard Symmetry454 month, numbered from 1 to 28, except for the middle-month in each quarter, which spans 35 days: February, May, August, November; and December in leap years.
- day-of-year - There are 364 days in a standard Symmetry454 year and 371 days in a leap year. The days are numbered accordingly.
- leap-year - Leap years occur every 5 or 6 years, evenly spread over 293 years according the formula: (52 > ((52 * year + 146) % 293)).
- Week day - every month starts on a Monday. There are no days outside of the week or month.
Implementation Requirements
This class is immutable and thread-safe.
See Also:

Serialized Form

Field Summary

Fields
Modifier and Type	Field	Description
`static long`	`DAYS_0001_TO_1970`	The number of days from year zero to CE 1970, still the era only allows CE 1 and higher.
`static Symmetry454Chronology`	`INSTANCE`	Singleton instance for the Symmetry454 chronology.

Constructor Summary

Constructors
Constructor Description

Symmetry454Chronology()
Deprecated.
Use the singleton INSTANCE instead.

Constructors
Constructor	Description
`Symmetry454Chronology()`	Deprecated. Use the singleton `INSTANCE` instead.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Symmetry454Date`	`date(int prolepticYear, int month, int dayOfMonth)`	Obtains a local date in Symmetry454 calendar system from the proleptic-year, month-of-year and day-of-month fields.
`Symmetry454Date`	`date(java.time.chrono.Era era, int yearOfEra, int month, int dayOfMonth)`	Obtains a local date in Symmetry454 calendar system from the era, year-of-era, month-of-year and day-of-month fields.
`Symmetry454Date`	`date(java.time.temporal.TemporalAccessor temporal)`	Obtains a Symmetry454 local date from another date-time object.
`Symmetry454Date`	`dateEpochDay(long epochDay)`	Obtains a local date in the Symmetry454 calendar system from the epoch-day.
`Symmetry454Date`	`dateNow()`	Obtains the current Symmetry454 local date from the system clock in the default time-zone.
`Symmetry454Date`	`dateNow(java.time.Clock clock)`	Obtains the current Symmetry454 local date from the specified clock.
`Symmetry454Date`	`dateNow(java.time.ZoneId zone)`	Obtains the current Symmetry454 local date from the system clock in the specified time-zone.
`Symmetry454Date`	`dateYearDay(int prolepticYear, int dayOfYear)`	Obtains a local date in Symmetry454 calendar system from the proleptic-year and day-of-year fields.
`Symmetry454Date`	`dateYearDay(java.time.chrono.Era era, int yearOfEra, int dayOfYear)`	Obtains a local date in Symmetry454 calendar system from the era, year-of-era and day-of-year fields.
`java.time.chrono.IsoEra`	`eraOf(int eraValue)`	Creates the chronology era object from the numeric value.
`java.util.List<java.time.chrono.Era>`	`eras()`	Gets the list of eras for the chronology.
`java.lang.String`	`getCalendarType()`	Gets the calendar type of the underlying calendar system, which returns null.
`java.lang.String`	`getId()`	Gets the ID of the chronology - 'Sym454'.
`static long`	`getLeapYearsBefore(long prolepticYear)`	Get the count of leap years since CE 1.
`boolean`	`isLeapYear(long year)`	Checks if the specified year is a leap year.
`java.time.chrono.ChronoLocalDateTime<Symmetry454Date>`	`localDateTime(java.time.temporal.TemporalAccessor temporal)`	Obtains a Symmetry454 local date-time from another date-time object.
`int`	`prolepticYear(java.time.chrono.Era era, int yearOfEra)`
`java.time.temporal.ValueRange`	`range(java.time.temporal.ChronoField field)`
`java.time.chrono.ChronoZonedDateTime<Symmetry454Date>`	`zonedDateTime(java.time.Instant instant, java.time.ZoneId zone)`	Obtains a Symmetry454 zoned date-time in this chronology from an `Instant`.
`java.time.chrono.ChronoZonedDateTime<Symmetry454Date>`	`zonedDateTime(java.time.temporal.TemporalAccessor temporal)`	Obtains a Symmetry454 zoned date-time from another date-time object.

Methods inherited from class java.time.chrono.AbstractChronology
compareTo, equals, hashCode, resolveDate, toString

Methods inherited from interface java.time.chrono.Chronology
epochSecond, epochSecond, from, getDisplayName, period

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Field Detail
  - INSTANCE
```
public static final Symmetry454Chronology INSTANCE
```
    Singleton instance for the Symmetry454 chronology.
  - DAYS_0001_TO_1970
```
public static final long DAYS_0001_TO_1970
```
    The number of days from year zero to CE 1970, still the era only allows CE 1 and higher. There are 6 full 293-year cycles from CE 1 to 1758, with 6 * 52 leap years, i.e. 312. There are 37 leap years from CE 1758 to 1970.
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - Symmetry454Chronology
```
@Deprecated
public Symmetry454Chronology()
```
    Deprecated. Use the singleton INSTANCE instead.
    
    Private constructor, that is public to satisfy the ServiceLoader.
- Method Detail
  - getId
```
public java.lang.String getId()
```
    Gets the ID of the chronology - 'Sym454'.
    The ID uniquely identifies the Chronology. It can be used to lookup the Chronology using Chronology.of(String).
    
    Returns:
    
    the chronology ID - 'Sym454'
    
    See Also:
    
    getCalendarType()
  - getCalendarType
```
public java.lang.String getCalendarType()
```
    Gets the calendar type of the underlying calendar system, which returns null.
    The Unicode Locale Data Markup Language (LDML) specification does not define an identifier for this calendar system, thus null is returned.
    
    Returns:
    
    the calendar system type, null
    
    See Also:
    
    getId()
  - date
```
public Symmetry454Date date(java.time.chrono.Era era,
                            int yearOfEra,
                            int month,
                            int dayOfMonth)
```
    Obtains a local date in Symmetry454 calendar system from the era, year-of-era, month-of-year and day-of-month fields.
    
    Parameters:
    
    era - the Symmetry454 era, not null
    
    yearOfEra - the year-of-era
    
    month - the month-of-year
    
    dayOfMonth - the day-of-month
    
    Returns:
    
    the Symmetry454 local date, not null
    
    Throws:
    
    java.time.DateTimeException - if unable to create the date
    
    java.lang.ClassCastException - if the era is not a IsoEra
  - date
```
public Symmetry454Date date(int prolepticYear,
                            int month,
                            int dayOfMonth)
```
    Obtains a local date in Symmetry454 calendar system from the proleptic-year, month-of-year and day-of-month fields.
    
    Parameters:
    
    prolepticYear - the proleptic-year
    
    month - the month-of-year
    
    dayOfMonth - the day-of-month
    
    Returns:
    
    the Symmetry454 local date, not null
    
    Throws:
    
    java.time.DateTimeException - if unable to create the date
  - dateYearDay
```
public Symmetry454Date dateYearDay(java.time.chrono.Era era,
                                   int yearOfEra,
                                   int dayOfYear)
```
    Obtains a local date in Symmetry454 calendar system from the era, year-of-era and day-of-year fields.
    
    Parameters:
    
    era - the Symmetry454 era, not null
    
    yearOfEra - the year-of-era
    
    dayOfYear - the day-of-year
    
    Returns:
    
    the Symmetry454 local date, not null
    
    Throws:
    
    java.time.DateTimeException - if unable to create the date
    
    java.lang.ClassCastException - if the era is not a IsoEra
  - dateYearDay
```
public Symmetry454Date dateYearDay(int prolepticYear,
                                   int dayOfYear)
```
    Obtains a local date in Symmetry454 calendar system from the proleptic-year and day-of-year fields.
    
    Parameters:
    
    prolepticYear - the proleptic-year
    
    dayOfYear - the day-of-year
    
    Returns:
    
    the Symmetry454 local date, not null
    
    Throws:
    
    java.time.DateTimeException - if unable to create the date
  - dateEpochDay
```
public Symmetry454Date dateEpochDay(long epochDay)
```
    Obtains a local date in the Symmetry454 calendar system from the epoch-day.
    
    Parameters:
    
    epochDay - the epoch day
    
    Returns:
    
    the Symmetry454 local date, not null
    
    Throws:
    
    java.time.DateTimeException - if unable to create the date
  - dateNow
```
public Symmetry454Date dateNow()
```
    Obtains the current Symmetry454 local date 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.
    
    Returns:
    
    the current Symmetry454 local date using the system clock and default time-zone, not null
    
    Throws:
    
    java.time.DateTimeException - if unable to create the date
  - dateNow
```
public Symmetry454Date dateNow(java.time.ZoneId zone)
```
    Obtains the current Symmetry454 local date 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 - the zone ID to use, not null
    
    Returns:
    
    the current Symmetry454 local date using the system clock, not null
    
    Throws:
    
    java.time.DateTimeException - if unable to create the date
  - dateNow
```
public Symmetry454Date dateNow(java.time.Clock clock)
```
    Obtains the current Symmetry454 local date 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 - the clock to use, not null
    
    Returns:
    
    the current Symmetry454 local date, not null
    
    Throws:
    
    java.time.DateTimeException - if unable to create the date
  - date
```
public Symmetry454Date date(java.time.temporal.TemporalAccessor temporal)
```
    Obtains a Symmetry454 local date from another date-time object.
    
    Parameters:
    
    temporal - the date-time object to convert, not null
    
    Returns:
    
    the Symmetry454 local date, not null
    
    Throws:
    
    java.time.DateTimeException - if unable to create the date
  - localDateTime
```
public java.time.chrono.ChronoLocalDateTime<Symmetry454Date> localDateTime(java.time.temporal.TemporalAccessor temporal)
```
    Obtains a Symmetry454 local date-time from another date-time object.
    
    Parameters:
    
    temporal - the date-time object to convert, not null
    
    Returns:
    
    the Symmetry454 local date-time, not null
    
    Throws:
    
    java.time.DateTimeException - if unable to create the date-time
  - zonedDateTime
```
public java.time.chrono.ChronoZonedDateTime<Symmetry454Date> zonedDateTime(java.time.temporal.TemporalAccessor temporal)
```
    Obtains a Symmetry454 zoned date-time from another date-time object.
    
    Parameters:
    
    temporal - the date-time object to convert, not null
    
    Returns:
    
    the Symmetry454 zoned date-time, not null
    
    Throws:
    
    java.time.DateTimeException - if unable to create the date-time
  - zonedDateTime
```
public java.time.chrono.ChronoZonedDateTime<Symmetry454Date> zonedDateTime(java.time.Instant instant,
                                                                           java.time.ZoneId zone)
```
    Obtains a Symmetry454 zoned date-time in this chronology from an Instant.
    
    Parameters:
    
    instant - the instant to create the date-time from, not null
    
    zone - the time-zone, not null
    
    Returns:
    
    the Symmetry454 zoned date-time, not null
    
    Throws:
    
    java.time.DateTimeException - if the result exceeds the supported range
  - isLeapYear
```
public boolean isLeapYear(long year)
```
    Checks if the specified year is a leap year.
    A leap-year is a year of a longer length than normal. Leap years in the calendar system match those of the ISO calendar system.
    
    Parameters:
    
    year - the proleptic-year to check, not validated for range
    
    Returns:
    
    true if the year is a leap year
  - eraOf
```
public java.time.chrono.IsoEra eraOf(int eraValue)
```
    Creates the chronology era object from the numeric value.
    The list of eras is shared with IsoEra.
    
    Parameters:
    
    eraValue - the era value
    
    Returns:
    
    the calendar system era, not null
    
    Throws:
    
    java.time.DateTimeException - if unable to create the era
  - eras
```
public java.util.List<java.time.chrono.Era> eras()
```
    Gets the list of eras for the chronology.
    The list of eras is shared with IsoEra.
    
    Returns:
    
    the list of eras for the chronology, may be immutable, not null
  - range
```
public java.time.temporal.ValueRange range(java.time.temporal.ChronoField field)
```
  - prolepticYear
```
public int prolepticYear(java.time.chrono.Era era,
                         int yearOfEra)
```
  - getLeapYearsBefore
```
public static long getLeapYearsBefore(long prolepticYear)
```
    Get the count of leap years since CE 1.
    
    Parameters:
    
    prolepticYear - the year
    
    Returns:
    
    the number of leap years since CE 1

Class Symmetry454Chronology

Implementation Requirements

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.time.chrono.AbstractChronology

Methods inherited from interface java.time.chrono.Chronology

Methods inherited from class java.lang.Object

Field Detail

INSTANCE

DAYS_0001_TO_1970

Constructor Detail

Symmetry454Chronology

Method Detail

getId

getCalendarType

date

date

dateYearDay

dateYearDay

dateEpochDay

dateNow

dateNow

dateNow

date

localDateTime

zonedDateTime

zonedDateTime

isLeapYear

eraOf

eras

range

prolepticYear

getLeapYearsBefore