Package org.joda.time.chrono

Class BasicFixedMonthChronology

java.lang.Object

org.joda.time.Chronology

org.joda.time.chrono.BaseChronology

org.joda.time.chrono.AssembledChronology

org.joda.time.chrono.BasicChronology

org.joda.time.chrono.BasicFixedMonthChronology

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

CopticChronology, EthiopicChronology

abstract class BasicFixedMonthChronology
extends BasicChronology

Abstract implementation of a calendar system based around fixed length months.

As the month length is fixed various calculations can be optimised. This implementation assumes any additional days after twelve months fall into a thirteenth month.

BasicFixedMonthChronology is thread-safe and immutable, and all subclasses must be as well.

Since:

1.2, refactored from CopticChronology

Nested Class Summary

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

AssembledChronology.Fields

Field Summary

Fields

Modifier and Type	Field	Description
(package private) static final long	MILLIS_PER_MONTH	The length of the month in millis.
(package private) static final long	MILLIS_PER_YEAR	The typical millis per year.
(package private) static final int	MONTH_LENGTH	The length of the month.
private static final long	serialVersionUID	Serialization lock

Constructor Summary

Constructors

Constructor	Description
BasicFixedMonthChronology(Chronology base, Object param, int minDaysInFirstWeek)	Restricted constructor.

Method Summary

Modifier and Type	Method	Description
(package private) long	getAverageMillisPerMonth()	Gets an average value for the milliseconds per month.
(package private) long	getAverageMillisPerYear()	Gets an average value for the milliseconds per year.
(package private) long	getAverageMillisPerYearDividedByTwo()	Gets an average value for the milliseconds per year, divided by two.
(package private) int	getDayOfMonth(long millis)
(package private) int	getDaysInMonthMax()	Gets the maximum number of days in any month.
(package private) int	getDaysInMonthMax(int month)	Gets the maximum days in the specified month.
(package private) int	getDaysInYearMonth(int year, int month)	Gets the number of days in the specified month and year.
(package private) int	getMaxMonth()	Gets the maximum number of months.
(package private) int	getMonthOfYear(long millis)
(package private) int	getMonthOfYear(long millis, int year)
(package private) long	getTotalMillisByYearMonth(int year, int month)	Gets the total number of millis elapsed in this year at the start of the specified month, such as zero for month 1.
(package private) long	getYearDifference(long minuendInstant, long subtrahendInstant)	Gets the difference between the two instants in years.
(package private) boolean	isLeapYear(int year)	Is the specified year a leap year?
(package private) long	setYear(long instant, int year)	Sets the year from an instant and year.

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

assemble, calculateFirstDayOfYearMillis, equals, getApproxMillisAtEpochDividedByTwo, getDateMidnightMillis, getDateTimeMillis, getDateTimeMillis, getDayOfMonth, getDayOfMonth, getDayOfWeek, getDayOfYear, getDayOfYear, getDaysInMonthMax, getDaysInMonthMaxForSet, getDaysInYear, getDaysInYearMax, getFirstWeekOfYearMillis, getMaxMonth, getMaxYear, getMillisOfDay, getMinimumDaysInFirstWeek, getMinYear, getWeekOfWeekyear, getWeekOfWeekyear, getWeeksInYear, getWeekyear, getYear, getYearMillis, getYearMonthDayMillis, getYearMonthMillis, getZone, hashCode, isLeapDay, toString

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

centuries, centuryOfEra, clockhourOfDay, clockhourOfHalfday, dayOfMonth, dayOfWeek, dayOfYear, days, era, eras, getBase, getDateTimeMillis, getParam, 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, get, get, get, set, validate, withUTC, withZone

Methods inherited from class java.lang.Object

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

Field Details

serialVersionUID

private static final long serialVersionUID

Serialization lock

See Also:

• Constant Field Values

MONTH_LENGTH

static final int MONTH_LENGTH

The length of the month.

See Also:

• Constant Field Values

MILLIS_PER_YEAR

static final long MILLIS_PER_YEAR

The typical millis per year.

See Also:

• Constant Field Values

MILLIS_PER_MONTH

static final long MILLIS_PER_MONTH

The length of the month in millis.

See Also:

• Constant Field Values

Constructor Details

BasicFixedMonthChronology

BasicFixedMonthChronology(Chronology base,
 Object param,
 int minDaysInFirstWeek)

Restricted constructor.

Parameters:

base - the base chronology

param - the init parameter

minDaysInFirstWeek - the minimum days in the first week

Method Details

setYear

long setYear(long instant,
 int year)

Description copied from class: BasicChronology

Sets the year from an instant and year.

Specified by:

setYear in class BasicChronology

Parameters:

instant - millis from 1970-01-01T00:00:00Z

year - the year to set

Returns:

the updated millis

getYearDifference

long getYearDifference(long minuendInstant,
 long subtrahendInstant)

Description copied from class: BasicChronology

Gets the difference between the two instants in years.

Specified by:

getYearDifference in class BasicChronology

Parameters:

minuendInstant - the first instant

subtrahendInstant - the second instant

Returns:

the difference

getTotalMillisByYearMonth

long getTotalMillisByYearMonth(int year,
 int month)

Description copied from class: BasicChronology

Gets the total number of millis elapsed in this year at the start of the specified month, such as zero for month 1.

Specified by:

getTotalMillisByYearMonth in class BasicChronology

Parameters:

year - the year

month - the month

Returns:

the elapsed millis at the start of the month

getDayOfMonth

int getDayOfMonth(long millis)

Overrides:

getDayOfMonth in class BasicChronology

Parameters:

millis - from 1970-01-01T00:00:00Z

isLeapYear

boolean isLeapYear(int year)

Description copied from class: BasicChronology

Is the specified year a leap year?

Specified by:

isLeapYear in class BasicChronology

Parameters:

year - the year to test

Returns:

true if leap

getDaysInYearMonth

int getDaysInYearMonth(int year,
 int month)

Description copied from class: BasicChronology

Gets the number of days in the specified month and year.

Specified by:

getDaysInYearMonth in class BasicChronology

Parameters:

year - the year

month - the month

Returns:

the number of days

getDaysInMonthMax

int getDaysInMonthMax()

Description copied from class: BasicChronology

Gets the maximum number of days in any month.

Overrides:

getDaysInMonthMax in class BasicChronology

Returns:

31

getDaysInMonthMax

int getDaysInMonthMax(int month)

Description copied from class: BasicChronology

Gets the maximum days in the specified month.

Specified by:

getDaysInMonthMax in class BasicChronology

Parameters:

month - the month

Returns:

the max days

getMonthOfYear

int getMonthOfYear(long millis)

Overrides:

getMonthOfYear in class BasicChronology

Parameters:

millis - from 1970-01-01T00:00:00Z

getMonthOfYear

int getMonthOfYear(long millis,
 int year)

Specified by:

getMonthOfYear in class BasicChronology

Parameters:

millis - from 1970-01-01T00:00:00Z

year - precalculated year of millis

getMaxMonth

int getMaxMonth()

Description copied from class: BasicChronology

Gets the maximum number of months.

Overrides:

getMaxMonth in class BasicChronology

Returns:

12

getAverageMillisPerYear

long getAverageMillisPerYear()

Description copied from class: BasicChronology

Gets an average value for the milliseconds per year.

Specified by:

getAverageMillisPerYear in class BasicChronology

Returns:

the millis per year

getAverageMillisPerYearDividedByTwo

long getAverageMillisPerYearDividedByTwo()

Description copied from class: BasicChronology

Gets an average value for the milliseconds per year, divided by two.

Specified by:

getAverageMillisPerYearDividedByTwo in class BasicChronology

Returns:

the millis per year divided by two

getAverageMillisPerMonth

long getAverageMillisPerMonth()

Description copied from class: BasicChronology

Gets an average value for the milliseconds per month.

Specified by:

getAverageMillisPerMonth in class BasicChronology

Returns:

the millis per month