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org.joda.time.chrono

Class JulianChronology

Implemented Interfaces:
Serializable
public final class JulianChronology
extends org.joda.time.chrono.BasicGJChronology
Implements a pure proleptic Julian calendar system, which defines every fourth year as leap. This implementation follows the leap year rule strictly, even for dates before 8 CE, where leap years were actually irregular. In the Julian calendar, year zero does not exist: 1 BCE is followed by 1 CE.

Although the Julian calendar did not exist before 45 BCE, this chronology assumes it did, thus it is proleptic. This implementation also fixes the start of the year at January 1.

JulianChronology is thread-safe and immutable.

Authors:
Guy Allard
Brian S O'Neill
Stephen Colebourne
Since:
1.0
See Also:
Wikipedia, GregorianChronology, GJChronology

Nested Class Summary

Nested classes/interfaces inherited from class org.joda.time.chrono.AssembledChronology

AssembledChronology.Fields

Method Summary

protected void
assemble(AssembledChronology.Fields fields)
static JulianChronology
getInstance()
Gets an instance of the JulianChronology in the default time zone.
static JulianChronology
getInstance(DateTimeZone zone)
Gets an instance of the JulianChronology in the given time zone.
static JulianChronology
getInstance(DateTimeZone zone, int minDaysInFirstWeek)
Gets an instance of the JulianChronology in the given time zone.
static JulianChronology
getInstanceUTC()
Gets an instance of the JulianChronology.
Chronology
withUTC()
Gets the Chronology in the UTC time zone.
Chronology
withZone(DateTimeZone zone)
Gets the Chronology in a specific time zone.

Methods inherited from class org.joda.time.chrono.BasicChronology

assemble, equals, getDateTimeMillis, getDateTimeMillis, getMinimumDaysInFirstWeek, getZone, hashCode, toString

Methods inherited from class org.joda.time.chrono.AssembledChronology

assemble, centuries, centuryOfEra, clockhourOfDay, clockhourOfHalfday, dayOfMonth, dayOfWeek, dayOfYear, days, era, eras, getBase, getDateTimeMillis, getDateTimeMillis, getDateTimeMillis, getParam, getZone, halfdayOfDay, halfdays, hourOfDay, hourOfHalfday, hours, millis, millisOfDay, millisOfSecond, minuteOfDay, minuteOfHour, minutes, monthOfYear, months, secondOfDay, secondOfMinute, seconds, weekOfWeekyear, weeks, weekyear, weekyearOfCentury, weekyears, year, yearOfCentury, yearOfEra, years

Methods inherited from class org.joda.time.chrono.BaseChronology

add, add, centuries, centuryOfEra, clockhourOfDay, clockhourOfHalfday, dayOfMonth, dayOfWeek, dayOfYear, days, era, eras, get, get, get, getDateTimeMillis, getDateTimeMillis, getDateTimeMillis, getZone, halfdayOfDay, halfdays, hourOfDay, hourOfHalfday, hours, millis, millisOfDay, millisOfSecond, minuteOfDay, minuteOfHour, minutes, monthOfYear, months, secondOfDay, secondOfMinute, seconds, set, toString, validate, weekOfWeekyear, weeks, weekyear, weekyearOfCentury, weekyears, withUTC, withZone, year, yearOfCentury, yearOfEra, years

Methods inherited from class org.joda.time.Chronology

add, add, centuries, centuryOfEra, clockhourOfDay, clockhourOfHalfday, dayOfMonth, dayOfWeek, dayOfYear, days, era, eras, get, get, get, getBuddhist, getBuddhist, getBuddhistUTC, getCoptic, getCoptic, getCopticUTC, getDateTimeMillis, getDateTimeMillis, getDateTimeMillis, getGJ, getGJ, getGJUTC, getGregorian, getGregorian, getGregorianUTC, getISO, getISO, getISOUTC, getJulian, getJulian, getJulianUTC, getZone, halfdayOfDay, halfdays, hourOfDay, hourOfHalfday, hours, millis, millisOfDay, millisOfSecond, minuteOfDay, minuteOfHour, minutes, monthOfYear, months, secondOfDay, secondOfMinute, seconds, set, toString, validate, weekOfWeekyear, weeks, weekyear, weekyearOfCentury, weekyears, withUTC, withZone, year, yearOfCentury, yearOfEra, years

Method Details

assemble

protected void assemble(AssembledChronology.Fields fields)
Overrides:
assemble in interface org.joda.time.chrono.BasicChronology

getInstance

public static JulianChronology getInstance()
Gets an instance of the JulianChronology in the default time zone.
Returns:
a chronology in the default time zone

getInstance

public static JulianChronology getInstance(DateTimeZone zone)
Gets an instance of the JulianChronology in the given time zone.
Parameters:
zone - the time zone to get the chronology in, null is default
Returns:
a chronology in the specified time zone

getInstance

public static JulianChronology getInstance(DateTimeZone zone,
                                           int minDaysInFirstWeek)
Gets an instance of the JulianChronology in the given time zone.
Parameters:
zone - the time zone to get the chronology in, null is default
minDaysInFirstWeek - minimum number of days in first week of the year; default is 4
Returns:
a chronology in the specified time zone

getInstanceUTC

public static JulianChronology getInstanceUTC()
Gets an instance of the JulianChronology. The time zone of the returned instance is UTC.
Returns:
a singleton UTC instance of the chronology

withUTC

public Chronology withUTC()
Gets the Chronology in the UTC time zone.
Overrides:
withUTC in interface BaseChronology
Returns:
the chronology in UTC

withZone

public Chronology withZone(DateTimeZone zone)
Gets the Chronology in a specific time zone.
Overrides:
withZone in interface BaseChronology
Parameters:
zone - the zone to get the chronology in, null is default
Returns:
the chronology

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