Class MonthDayYear

java.lang.Object

org.episteme.social.history.calendars.AlternateCalendar

org.episteme.social.history.calendars.SevenDaysWeek

org.episteme.social.history.calendars.MonthDayYear

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

ChineseCalendar, GregorianCalendar, HebrewCalendar, IslamicCalendar, ModifiedFrenchCalendar, OldHinduSolarCalendar, PersianCalendar

public abstract class MonthDayYear
extends SevenDaysWeek

Abstract base class for calendar systems that use a month-day-year date representation. Extends SevenDaysWeek to include weekday calculations.

Subclasses must implement:

• monthName() - Returns the name of the current month
• getSuffix() - Returns an era suffix (e.g., "CE", "BCE")
• getMonths() - Returns an enumeration of all month names
• AlternateCalendar.recomputeRD() - Computes Rata Die from date fields
• AlternateCalendar.recomputeFromRD() - Computes date fields from Rata Die

Since:

1.0

Version:

2.0

Author:

Mark E. Shoulson (original implementation), Silvere Martin-Michiellot, Gemini AI (Google DeepMind)

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected int	day	The day of the month (1-31 for most calendars).
protected int	month	The month (1-12 for most calendars).
protected int	year	The year (negative values typically represent BCE years).

Fields inherited from class SevenDaysWeek

DAY_NAMES, FRIDAY, MONDAY, SATURDAY, SUNDAY, THURSDAY, TUESDAY, WEDNESDAY

Fields inherited from class AlternateCalendar

EPOCH, JD_EPOCH, rd, unicode

Constructor Summary

Constructors

Constructor	Description
MonthDayYear()	Default constructor.

Method Summary

Modifier and Type	Method	Description
int	getDay()	Returns the day of the month.
int	getMonth()	Returns the month.
abstract Enumeration<String>	getMonths()	Returns an enumeration of all month names for this calendar.
protected abstract String	getSuffix()	Returns the era suffix for display (e.g., "CE", "BCE", "AH").
int	getYear()	Returns the year.
protected abstract String	monthName()	Returns the name of the current month.
void	set(int year, int month, int day)	Sets the calendar to the specified date and recomputes the Rata Die.
String	toString()	Returns a string representation of this date.

Methods inherited from class SevenDaysWeek

kDayAfter, kDayBefore, kDayNearest, kDayOnOrAfter, kDayOnOrBefore, nthKDay, weekDay, weekDayName

Methods inherited from class AlternateCalendar

add, amod, difference, difference, floorDiv, fromJD, isAfter, isBefore, mod, mod, recomputeFromRD, recomputeRD, set, subtract, toJD, toJD, toRD

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details

month

protected int month

The month (1-12 for most calendars).

day

protected int day

The day of the month (1-31 for most calendars).

year

protected int year

The year (negative values typically represent BCE years).

Constructor Details

MonthDayYear

public MonthDayYear()

Default constructor.

Method Details

getDay

public int getDay()

Returns the day of the month.

Returns:

the day (typically 1-31)

getMonth

public int getMonth()

Returns the month.

Returns:

the month (typically 1-12)

getYear

public int getYear()

Returns the year.

Returns:

the year (negative for BCE)

set

public void set(int year,
 int month,
 int day)

Sets the calendar to the specified date and recomputes the Rata Die.

Parameters:

year - the year

month - the month

day - the day of month

toString

public String toString()

Returns a string representation of this date.

Specified by:

toString in class AlternateCalendar

Returns:

formatted date string

monthName

protected abstract String monthName()

Returns the name of the current month.

Returns:

the month name

getSuffix

protected abstract String getSuffix()

Returns the era suffix for display (e.g., "CE", "BCE", "AH").

Returns:

the suffix string

getMonths

public abstract Enumeration<String> getMonths()

Returns an enumeration of all month names for this calendar.

Returns:

month names enumeration