JapaneseCalendar


public class JapaneseCalendar
extends GregorianCalendar

java.lang.Object
   ↳ android.icu.util.Calendar
     ↳ android.icu.util.GregorianCalendar
       ↳ android.icu.util.JapaneseCalendar


JapaneseCalendar is a subclass of GregorianCalendar that numbers years and eras based on the reigns of the Japanese emperors. The Japanese calendar is identical to the Gregorian calendar in all respects except for the year and era. The ascension of each emperor to the throne begins a new era, and the years of that era are numbered starting with the year of ascension as year 1.

Note that in the year of an imperial ascension, there are two possible sets of year and era values: that for the old era and for the new. For example, a new era began on January 7, 1989 AD. Strictly speaking, the first six days of that year were in the Showa era, e.g. "January 6, 64 Showa", while the rest of the year was in the Heisei era, e.g. "January 7, 1 Heisei". This class handles this distinction correctly when computing dates. However, in lenient mode either form of date is acceptable as input.

In modern times, eras have started on January 8, 1868 AD, Gregorian (Meiji), July 30, 1912 (Taisho), December 25, 1926 (Showa), and January 7, 1989 (Heisei). Constants for these eras, suitable for use in the ERA field, are provided in this class. Note that the number used for each era is more or less arbitrary. Currently, the era starting in 645 AD is era #0; however this may change in the future. Use the predefined constants rather than using actual, absolute numbers.

Since ICU4J 63, start date of each era is imported from CLDR. CLDR era data may contain tentative era in near future with placeholder names. By default, such era data is not enabled. ICU4J users who want to test the behavior of the future era can enable this by one of following settings (in the priority order):

  1. Java system property ICU_ENABLE_TENTATIVE_ERA=true.
  2. Environment variable ICU_ENABLE_TENTATIVE_ERA=true.
  3. Java system property jdk.calendar.japanese.supplemental.era=xxx. (Note: This configuration is used for specifying a new era's start date and names in OpenJDK. ICU4J implementation enables the CLDR tentative era when this property is defined, but it does not use the start date and names specified by the property value.)

This class should not be subclassed.

JapaneseCalendar usually should be instantiated using Calendar.getInstance(ULocale) passing in a ULocale with the tag "@calendar=japanese".

Summary

Inherited constants

int AD

Value of the ERA field indicating the common era (Anno Domini), also known as CE.

int BC

Value of the ERA field indicating the period before the common era (before Christ), also known as BCE.

int AM

Value of the AM_PM field indicating the period of the day from midnight to just before noon.

int AM_PM

Field number for get and set indicating whether the HOUR is before or after noon.

int APRIL

Value of the MONTH field indicating the fourth month of the year.

int AUGUST

Value of the MONTH field indicating the eighth month of the year.

int DATE

Field number for get and set indicating the day of the month.

int DAY_OF_MONTH

Field number for get and set indicating the day of the month.

int DAY_OF_WEEK

Field number for get and set indicating the day of the week.

int DAY_OF_WEEK_IN_MONTH

Field number for get and set indicating the ordinal number of the day of the week within the current month.

int DAY_OF_YEAR

Field number for get and set indicating the day number within the current year.

int DECEMBER

Value of the MONTH field indicating the twelfth month of the year.

int DOW_LOCAL

[icu] Field number for get() and set() indicating the localized day of week.

int DST_OFFSET

Field number for get and set indicating the daylight savings offset in milliseconds.

int EPOCH_JULIAN_DAY

The Julian day of the epoch, that is, January 1, 1970 on the Gregorian calendar.

int ERA

Field number for get and set indicating the era, e.g., AD or BC in the Julian calendar.

int EXTENDED_YEAR

[icu] Field number for get() and set() indicating the extended year.

int FEBRUARY

Value of the MONTH field indicating the second month of the year.

int FRIDAY

Value of the DAY_OF_WEEK field indicating Friday.

int GREATEST_MINIMUM

Limit type for getLimit() and handleGetLimit() indicating the greatest minimum value that a field can take.

int HOUR

Field number for get and set indicating the hour of the morning or afternoon.

int HOUR_OF_DAY

Field number for get and set indicating the hour of the day.

int INTERNALLY_SET

Value of the time stamp stamp[] indicating that a field has been set via computations from the time or from other fields.

int IS_LEAP_MONTH

[icu] Field indicating whether or not the current month is a leap month.

int JANUARY

Value of the MONTH field indicating the first month of the year.

int JAN_1_1_JULIAN_DAY

The Julian day of the Gregorian epoch, that is, January 1, 1 on the Gregorian calendar.

int JULIAN_DAY

[icu] Field number for get() and set() indicating the modified Julian day number.

int JULY

Value of the MONTH field indicating the seventh month of the year.

int JUNE

Value of the MONTH field indicating the sixth month of the year.

int LEAST_MAXIMUM

Limit type for getLimit() and handleGetLimit() indicating the least maximum value that a field can take.

int MARCH

Value of the MONTH field indicating the third month of the year.

int MAXIMUM

Limit type for getLimit() and handleGetLimit() indicating the maximum value that a field can take (greatest maximum).

int MAX_FIELD_COUNT

This constant was deprecated in API level 26. ICU 58 The numeric value may change over time, see ICU ticket #12420.

int MAX_JULIAN

The maximum supported Julian day.

long MAX_MILLIS

The maximum supported epoch milliseconds.

int MAY

Value of the MONTH field indicating the fifth month of the year.

int MILLISECOND

Field number for get and set indicating the millisecond within the second.

int MILLISECONDS_IN_DAY

[icu] Field number for get() and set() indicating the milliseconds in the day.

int MINIMUM

Limit type for getLimit() and handleGetLimit() indicating the minimum value that a field can take (least minimum).

int MINIMUM_USER_STAMP

If the time stamp stamp[] has a value greater than or equal to MINIMUM_USER_SET then it has been set by the user via a call to set().

int MINUTE

Field number for get and set indicating the minute within the hour.

int MIN_JULIAN

The minimum supported Julian day.

long MIN_MILLIS

The minimum supported epoch milliseconds.

int MONDAY

Value of the DAY_OF_WEEK field indicating Monday.

int MONTH

Field number for get and set indicating the month.

int NOVEMBER

Value of the MONTH field indicating the eleventh month of the year.

int OCTOBER

Value of the MONTH field indicating the tenth month of the year.

long ONE_DAY

The number of milliseconds in one day.

int ONE_HOUR

The number of milliseconds in one hour.

int ONE_MINUTE

The number of milliseconds in one minute.

int ONE_SECOND

The number of milliseconds in one second.

long ONE_WEEK

The number of milliseconds in one week.

int ORDINAL_MONTH

[icu] Field indicating the month.

int PM

Value of the AM_PM field indicating the period of the day from noon to just before midnight.

int RESOLVE_REMAP

Value to OR against resolve table field values for remapping.

int SATURDAY

Value of the DAY_OF_WEEK field indicating Saturday.

int SECOND

Field number for get and set indicating the second within the minute.

int SEPTEMBER

Value of the MONTH field indicating the ninth month of the year.

int SUNDAY

Value of the DAY_OF_WEEK field indicating Sunday.

int THURSDAY

Value of the DAY_OF_WEEK field indicating Thursday.

int TUESDAY

Value of the DAY_OF_WEEK field indicating Tuesday.

int UNDECIMBER

Value of the MONTH field indicating the thirteenth month of the year.

int UNSET

Value of the time stamp stamp[] indicating that a field has not been set since the last call to clear().

int WALLTIME_FIRST

[icu]Option used by setRepeatedWallTimeOption(int) and setSkippedWallTimeOption(int) specifying an ambiguous wall time to be interpreted as the earliest.

int WALLTIME_LAST

[icu]Option used by setRepeatedWallTimeOption(int) and setSkippedWallTimeOption(int) specifying an ambiguous wall time to be interpreted as the latest.

int WALLTIME_NEXT_VALID

[icu]Option used by setSkippedWallTimeOption(int) specifying an ambiguous wall time to be interpreted as the next valid wall time.

int WEDNESDAY

Value of the DAY_OF_WEEK field indicating Wednesday.

int WEEK_OF_MONTH

Field number for get and set indicating the week number within the current month.

int WEEK_OF_YEAR

Field number for get and set indicating the week number within the current year.

int YEAR

Field number for get and set indicating the year.

int YEAR_WOY

[icu] Field number for get() and set() indicating the extended year corresponding to the WEEK_OF_YEAR field.

int ZONE_OFFSET

Field number for get and set indicating the raw offset from GMT in milliseconds.

Fields

public static final int HEISEI

Constant for the era starting on Jan.

public static final int MEIJI

Constant for the era starting on Sept.

public static final int REIWA

Constant for the era starting on May 1, 2019 AD.

public static final int SHOWA

Constant for the era starting on Dec.

public static final int TAISHO

Constant for the era starting on July 30, 1912 AD.

Inherited fields

protected boolean invertGregorian

Used by handleComputeJulianDay() and handleComputeMonthStart().

protected boolean isGregorian

Used by handleComputeJulianDay() and handleComputeMonthStart().

protected static final Date MAX_DATE

The maximum supported Date.

protected static final Date MIN_DATE

The minimum supported Date.

Public constructors

JapaneseCalendar()

Constructs a default JapaneseCalendar using the current time in the default time zone with the default locale.

JapaneseCalendar(TimeZone zone)

Constructs a JapaneseCalendar based on the current time in the given time zone with the default locale.

JapaneseCalendar(TimeZone zone, ULocale locale)

Constructs a JapaneseCalendar based on the current time in the given time zone with the given locale.

JapaneseCalendar(TimeZone zone, Locale aLocale)

Constructs a JapaneseCalendar based on the current time in the given time zone with the given locale.

JapaneseCalendar(ULocale locale)

Constructs a JapaneseCalendar based on the current time in the default time zone with the given locale.

JapaneseCalendar(int year, int month, int date)

Constructs a JapaneseCalendar with the given date set in the default time zone with the default locale.

JapaneseCalendar(int era, int year, int month, int date)

Constructs a JapaneseCalendar with the given date set in the default time zone with the default locale.

JapaneseCalendar(int year, int month, int date, int hour, int minute, int second)

Constructs a JapaneseCalendar with the given date and time set for the default time zone with the default locale.

JapaneseCalendar(Date date)

Constructs a JapaneseCalendar with the given date set in the default time zone with the default locale.

JapaneseCalendar(Locale aLocale)

Constructs a JapaneseCalendar based on the current time in the default time zone with the given locale.

Public methods

int getActualMaximum(int field)

Return the maximum value that this field could have, given the current date.

String getType()

[icu] Returns the calendar type name string for this Calendar object.

Protected methods

void handleComputeFields(int julianDay)

Override Calendar to compute several fields specific to the hybrid Gregorian-Julian calendar system.

int handleGetExtendedYear()

Returns the extended year defined by the current fields.

int handleGetLimit(int field, int limitType)

Override GregorianCalendar.

Inherited methods

int getActualMaximum(int field)

Return the maximum value that this field could have, given the current date.

int getActualMinimum(int field)

Return the minimum value that this field could have, given the current date.

final Date getGregorianChange()

Gets the Gregorian Calendar change date.

String getType()

[icu] Returns the calendar type name string for this Calendar object.

void handleComputeFields(int julianDay)

Override Calendar to compute several fields specific to the hybrid Gregorian-Julian calendar system.

int handleComputeJulianDay(int bestField)

Subclasses may override this.

int handleComputeMonthStart(int eyear, int month, boolean useMonth)

Return JD of start of given month/year

int handleGetExtendedYear()

Returns the extended year defined by the current fields.

int handleGetLimit(int field, int limitType)

Subclass API for defining limits of different types.

int handleGetMonthLength(int extendedYear, int month)

Returns the number of days in the given month of the given extended year of this calendar system.

int handleGetYearLength(int eyear)

Returns the number of days in the given extended year of this calendar system.

int hashCode()

Override hashCode.

boolean isEquivalentTo(Calendar other)

Returns true if the given Calendar object is equivalent to this one.

boolean isLeapYear(int year)

Determines if the given year is a leap year.

void roll(int field, int amount)

Roll a field by a signed amount.

void setGregorianChange(Date date)

Sets the GregorianCalendar change date.

void add(int field, int amount)

Add a signed amount to a specified field, using this calendar's rules.

boolean after(Object when)

Compares the time field records.

boolean before(Object when)

Compares the time field records.

final void clear()

Clears the values of all the time fields.

final void clear(int field)

Clears the value in the given time field.

Object clone()

Overrides Cloneable

int compareTo(Calendar that)

Compares the times (in millis) represented by two Calendar objects.

void complete()

Fills in any unset fields in the time field list.

void computeFields()

Converts the current millisecond time value time to field values in fields[].

final void computeGregorianFields(int julianDay)

Compute the Gregorian calendar year, month, and day of month from the Julian day.

int computeGregorianMonthStart(int year, int month)

Compute the Julian day of a month of the Gregorian calendar.

int computeJulianDay()

Compute the Julian day number as specified by this calendar's fields.

int computeMillisInDay()

This method was deprecated in API level 26. ICU 60

void computeTime()

Converts the current field values in fields[] to the millisecond time value time.

int computeZoneOffset(long millis, int millisInDay)

This method was deprecated in API level 26. ICU 60

boolean equals(Object obj)

Compares this calendar to the specified object.

int fieldDifference(Date when, int field)

[icu] Returns the difference between the given time and the time this calendar object is set to.

String fieldName(int field)

Returns a string name for a field, for debugging and exceptions.

static final int floorDivide(int numerator, int denominator, int[] remainder)

Divide two integers, returning the floor of the quotient, and the modulus remainder.

static final int floorDivide(int numerator, int denominator)

Divide two integers, returning the floor of the quotient.

static final long floorDivide(long numerator, long denominator)

Divide two long integers, returning the floor of the quotient.

static final int floorDivide(long numerator, int denominator, int[] remainder)

Divide two integers, returning the floor of the quotient, and the modulus remainder.

final int get(int field)

Returns the value for a given time field.

int getActualMaximum(int field)

Returns the maximum value that this field could have, given the current date.

int getActualMinimum(int field)

Returns the minimum value that this field could have, given the current date.

static Locale[] getAvailableLocales()

Returns the list of locales for which Calendars are installed.

DateFormat getDateTimeFormat(int dateStyle, int timeStyle, ULocale loc)

[icu] Returns a DateFormat appropriate to this calendar.

DateFormat getDateTimeFormat(int dateStyle, int timeStyle, Locale loc)

[icu] Returns a DateFormat appropriate to this calendar.

String getDisplayName(ULocale loc)

Returns the name of this calendar in the language of the given locale.

String getDisplayName(Locale loc)

Returns the name of this calendar in the language of the given locale.

final int getFieldCount()

[icu] Returns the number of fields defined by this calendar.

int[][][] getFieldResolutionTable()

Returns the field resolution array for this calendar.

int getFirstDayOfWeek()

Returns what the first day of the week is, where 1 = SUNDAY and 7 = SATURDAY.

final int getGreatestMinimum(int field)

Returns the highest minimum value for the given field if varies.

final int getGregorianDayOfMonth()

Returns the day of month (1-based) on the Gregorian calendar as computed by computeGregorianFields().

final int getGregorianDayOfYear()

Returns the day of year (1-based) on the Gregorian calendar as computed by computeGregorianFields().

final int getGregorianMonth()

Returns the month (0-based) on the Gregorian calendar as computed by computeGregorianFields().

final int getGregorianYear()

Returns the extended year on the Gregorian calendar as computed by computeGregorianFields().

static Calendar getInstance()

Returns a calendar using the default time zone and locale.

static Calendar getInstance(Locale aLocale)

Returns a calendar using the default time zone and specified locale.

static Calendar getInstance(TimeZone zone, Locale aLocale)

Returns a calendar with the specified time zone and locale.

static Calendar getInstance(TimeZone zone, ULocale locale)

Returns a calendar with the specified time zone and locale.

static Calendar getInstance(TimeZone zone)

Returns a calendar using the specified time zone and default locale.

static Calendar getInstance(ULocale locale)

Returns a calendar using the default time zone and specified locale.

static final String[] getKeywordValuesForLocale(String key, ULocale locale, boolean commonlyUsed)

[icu] Given a key and a locale, returns an array of string values in a preferred order that would make a difference.

final int getLeastMaximum(int field)

Returns the lowest maximum value for the given field if varies.

int getLimit(int field, int limitType)

Returns a limit for a field.

final int getMaximum(int field)

Returns the maximum value for the given time field.

int getMinimalDaysInFirstWeek()

Returns what the minimal days required in the first week of the year are.

final int getMinimum(int field)

Returns the minimum value for the given time field.

int getRepeatedWallTimeOption()

[icu]Gets the behavior for handling wall time repeating multiple times at negative time zone offset transitions.

int getSkippedWallTimeOption()

[icu]Gets the behavior for handling skipped wall time at positive time zone offset transitions.

final int getStamp(int field)

Returns the timestamp of a field.

String getTemporalMonthCode()

Gets The Temporal monthCode value corresponding to the month for the date.

final Date getTime()

Returns this Calendar's current time.

long getTimeInMillis()

Returns this Calendar's current time as a long.

TimeZone getTimeZone()

Returns the time zone.

String getType()

[icu] Returns the calendar type name string for this Calendar object.

Calendar.WeekData getWeekData()

[icu] Return simple, immutable struct-like class for access to the week data in this calendar.

static Calendar.WeekData getWeekDataForRegion(String region)

[icu] Return simple, immutable struct-like class for access to the CLDR week data.

static final int gregorianMonthLength(int y, int m)

Returns the length of a month of the Gregorian calendar.

static final int gregorianPreviousMonthLength(int y, int m)

Returns the length of a previous month of the Gregorian calendar.

void handleComputeFields(int julianDay)

Subclasses may override this method to compute several fields specific to each calendar system.

int handleComputeJulianDay(int bestField)

Subclasses may override this.

abstract int handleComputeMonthStart(int eyear, int month, boolean useMonth)

Returns the Julian day number of day before the first day of the given month in the given extended year.

int[] handleCreateFields()

Subclasses that use additional fields beyond those defined in Calendar should override this method to return an int[] array of the appropriate length.

DateFormat handleGetDateFormat(String pattern, String override, Locale locale)

Creates a DateFormat appropriate to this calendar.

DateFormat handleGetDateFormat(String pattern, ULocale locale)

Creates a DateFormat appropriate to this calendar.

DateFormat handleGetDateFormat(String pattern, Locale locale)

Creates a DateFormat appropriate to this calendar.

abstract int handleGetExtendedYear()

Returns the extended year defined by the current fields.

abstract int handleGetLimit(int field, int limitType)

Subclass API for defining limits of different types.

int handleGetMonthLength(int extendedYear, int month)

Returns the number of days in the given month of the given extended year of this calendar system.

int handleGetYearLength(int eyear)

Returns the number of days in the given extended year of this calendar system.

int hashCode()

Returns a hash code for this calendar.

boolean inTemporalLeapYear()

[icu] Returns true if the date is in a leap year.

final int internalGet(int field)

Returns the value for a given time field.

final int internalGet(int field, int defaultValue)

Returns the value for a given time field, or return the given default value if the field is not set.

final long internalGetTimeInMillis()

Returns the current milliseconds without recomputing.

final void internalSet(int field, int value)

Set a field to a value.

boolean isEquivalentTo(Calendar other)

[icu] Returns true if the given Calendar object is equivalent to this one.

static final boolean isGregorianLeapYear(int year)

Determines if the given year is a leap year.

boolean isLenient()

Tell whether date/time interpretation is to be lenient.

final boolean isSet(int field)

Determines if the given time field has a value set.

boolean isWeekend(Date date)

[icu] Returns true if the given date and time is in the weekend in this calendar system.

boolean isWeekend()

[icu] Returns true if this Calendar's current date and time is in the weekend in this calendar system.

static final int julianDayToDayOfWeek(int julian)

Returns the day of week, from SUNDAY to SATURDAY, given a Julian day.

static final long julianDayToMillis(int julian)

Converts Julian day to time as milliseconds.

static final int millisToJulianDay(long millis)

Converts time as milliseconds to Julian day.

int newerField(int defaultField, int alternateField)

Returns the field that is newer, either defaultField, or alternateField.

int newestStamp(int first, int last, int bestStampSoFar)

Returns the newest stamp of a given range of fields.

void pinField(int field)

Adjust the specified field so that it is within the allowable range for the date to which this calendar is set.

void prepareGetActual(int field, boolean isMinimum)

Prepare this calendar for computing the actual minimum or maximum.

int resolveFields(int[][][] precedenceTable)

Given a precedence table, return the newest field combination in the table, or -1 if none is found.

final void roll(int field, boolean up)

Rolls (up/down) a single unit of time on the given field.

void roll(int field, int amount)

Rolls (up/down) a specified amount time on the given field.

final void set(int year, int month, int date, int hour, int minute, int second)

Sets the values for the fields year, month, date, hour, minute, and second.

final void set(int year, int month, int date, int hour, int minute)

Sets the values for the fields year, month, date, hour, and minute.

final void set(int field, int value)

Sets the time field with the given value.

final void set(int year, int month, int date)

Sets the values for the fields year, month, and date.

void setFirstDayOfWeek(int value)

Sets what the first day of the week is, where 1 = SUNDAY and 7 = SATURDAY.

void setLenient(boolean lenient)

Specify whether or not date/time interpretation is to be lenient.

void setMinimalDaysInFirstWeek(int value)

Sets what the minimal days required in the first week of the year are.

void setRepeatedWallTimeOption(int option)

[icu]Sets the behavior for handling wall time repeating multiple times at negative time zone offset transitions.

void setSkippedWallTimeOption(int option)

[icu]Sets the behavior for handling skipped wall time at positive time zone offset transitions.

void setTemporalMonthCode(String temporalMonth)

Sets The Temporal monthCode which is a string identifier that starts with the literal grapheme "M" followed by two graphemes representing the zero-padded month number of the current month in a normal (non-leap) year and suffixed by an optional literal grapheme "L" if this is a leap month in a lunisolar calendar.

final void setTime(Date date)

Sets this Calendar's current time with the given Date.

void setTimeInMillis(long millis)

Sets this Calendar's current time from the given long value.

void setTimeZone(TimeZone value)

Sets the time zone with the given time zone value.

Calendar setWeekData(Calendar.WeekData wdata)

[icu] Set data in this calendar based on the WeekData input.

String toString()

Returns a string representation of this calendar.

void validateField(int field)

Validate a single field of this calendar.

final void validateField(int field, int min, int max)

Validate a single field of this calendar given its minimum and maximum allowed value.

void validateFields()

Ensure that each field is within its valid range by calling validateField(int) on each field that has been set.

int weekNumber(int desiredDay, int dayOfPeriod, int dayOfWeek)

Returns the week number of a day, within a period.

final int weekNumber(int dayOfPeriod, int dayOfWeek)

Returns the week number of a day, within a period.

Object clone()

Creates and returns a copy of this object.

boolean equals(Object obj)

Indicates whether some other object is "equal to" this one.

void finalize()

Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.

final Class<?> getClass()

Returns the runtime class of this Object.

int hashCode()

Returns a hash code value for the object.

final void notify()

Wakes up a single thread that is waiting on this object's monitor.

final void notifyAll()

Wakes up all threads that are waiting on this object's monitor.

String toString()

Returns a string representation of the object.

final void wait(long timeoutMillis, int nanos)

Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.

final void wait(long timeoutMillis)

Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.

final void wait()

Causes the current thread to wait until it is awakened, typically by being notified or interrupted.

abstract int compareTo(Calendar o)

Compares this object with the specified object for order.

Fields

HEISEI

Added in API level 24
public static final int HEISEI

Constant for the era starting on Jan. 7, 1989 AD.

MEIJI

Added in API level 24
public static final int MEIJI

Constant for the era starting on Sept. 8, 1868 AD.

REIWA

Added in API level 30
public static final int REIWA

Constant for the era starting on May 1, 2019 AD.

SHOWA

Added in API level 24
public static final int SHOWA

Constant for the era starting on Dec. 25, 1926 AD.

TAISHO

Added in API level 24
public static final int TAISHO

Constant for the era starting on July 30, 1912 AD.

Public constructors

JapaneseCalendar

Added in API level 24
public JapaneseCalendar ()

Constructs a default JapaneseCalendar using the current time in the default time zone with the default locale.

JapaneseCalendar

Added in API level 24
public JapaneseCalendar (TimeZone zone)

Constructs a JapaneseCalendar based on the current time in the given time zone with the default locale.

Parameters
zone TimeZone: the given time zone.

JapaneseCalendar

Added in API level 24
public JapaneseCalendar (TimeZone zone, 
                ULocale locale)

Constructs a JapaneseCalendar based on the current time in the given time zone with the given locale.

Parameters
zone TimeZone: the given time zone.

locale ULocale: the given ulocale.

JapaneseCalendar

Added in API level 24
public JapaneseCalendar (TimeZone zone, 
                Locale aLocale)

Constructs a JapaneseCalendar based on the current time in the given time zone with the given locale.

Parameters
zone TimeZone: the given time zone.

aLocale Locale: the given locale.

JapaneseCalendar

Added in API level 24
public JapaneseCalendar (ULocale locale)

Constructs a JapaneseCalendar based on the current time in the default time zone with the given locale.

Parameters
locale ULocale: the given ulocale.

JapaneseCalendar

Added in API level 24
public JapaneseCalendar (int year, 
                int month, 
                int date)

Constructs a JapaneseCalendar with the given date set in the default time zone with the default locale.

Parameters
year int: The value used to set the calendar's YEAR field, in the era Heisei, the most current at the time this class was last updated.

month int: The value used to set the calendar's MONTH field. The value is 0-based. e.g., 0 for January.

date int: The value used to set the calendar's DATE field.

JapaneseCalendar

Added in API level 24
public JapaneseCalendar (int era, 
                int year, 
                int month, 
                int date)

Constructs a JapaneseCalendar with the given date set in the default time zone with the default locale.

Parameters
era int: The imperial era used to set the calendar's ERA field. Eras are numbered starting with the Tenki era, which began in 1053 AD Gregorian, as era zero. Recent eras can be specified using the constants MEIJI (which started in 1868 AD), TAISHO (1912 AD), SHOWA (1926 AD), and HEISEI (1989 AD).

year int: The value used to set the calendar's YEAR field, in terms of the era.

month int: The value used to set the calendar's MONTH field. The value is 0-based. e.g., 0 for January.

date int: The value used to set the calendar's DATE field.

JapaneseCalendar

Added in API level 24
public JapaneseCalendar (int year, 
                int month, 
                int date, 
                int hour, 
                int minute, 
                int second)

Constructs a JapaneseCalendar with the given date and time set for the default time zone with the default locale.

Parameters
year int: The value used to set the calendar's YEAR time field, in the era Heisei, the most current at the time of this writing.

month int: The value used to set the calendar's MONTH time field. The value is 0-based. e.g., 0 for January.

date int: The value used to set the calendar's DATE time field.

hour int: The value used to set the calendar's HOUR_OF_DAY time field.

minute int: The value used to set the calendar's MINUTE time field.

second int: The value used to set the calendar's SECOND time field.

JapaneseCalendar

Added in API level 24
public JapaneseCalendar (Date date)

Constructs a JapaneseCalendar with the given date set in the default time zone with the default locale.

Parameters
date Date: The date to which the new calendar is set.

JapaneseCalendar

Added in API level 24
public JapaneseCalendar (Locale aLocale)

Constructs a JapaneseCalendar based on the current time in the default time zone with the given locale.

Parameters
aLocale Locale: the given locale.

Public methods

getActualMaximum

Added in API level 24
public int getActualMaximum (int field)

Return the maximum value that this field could have, given the current date. For example, with the date "Feb 3, 1997" and the DAY_OF_MONTH field, the actual maximum would be 28; for "Feb 3, 1996" it s 29. Similarly for a Hebrew calendar, for some years the actual maximum for MONTH is 12, and for others 13.

Parameters
field int: the field whose maximum is desired

Returns
int the maximum of the given field for the current date of this calendar

getType

Added in API level 24
public String getType ()

[icu] Returns the calendar type name string for this Calendar object. The returned string is the legacy ICU calendar attribute value, for example, "gregorian" or "japanese".

See type="old type name" for the calendar attribute of locale IDs at http://www.unicode.org/reports/tr35/#Key_Type_Definitions

Returns
String legacy calendar type name string

Protected methods

handleComputeFields

Added in API level 24
protected void handleComputeFields (int julianDay)

Override Calendar to compute several fields specific to the hybrid Gregorian-Julian calendar system. These are:

  • ERA
  • YEAR
  • MONTH
  • DAY_OF_MONTH
  • DAY_OF_YEAR
  • EXTENDED_YEAR

Parameters
julianDay int

handleGetExtendedYear

Added in API level 24
protected int handleGetExtendedYear ()

Returns the extended year defined by the current fields. This will use the EXTENDED_YEAR field or the YEAR and supra-year fields (such as ERA) specific to the calendar system, depending on which set of fields is newer.

Returns
int the extended year

handleGetLimit

Added in API level 24
protected int handleGetLimit (int field, 
                int limitType)

Override GregorianCalendar. We should really handle YEAR_WOY and EXTENDED_YEAR here too to implement the 1..5000000 range, but it's not critical.

Parameters
field int: one of the above field numbers

limitType int: one of MINIMUM, GREATEST_MINIMUM, LEAST_MAXIMUM, or MAXIMUM

Returns
int

Discover the latest app development tools, platform updates, training, and documentation for developers across every Android device.

Updated Apr 4, 2024

Connectivity describes how Android apps connect to and use network connections, including WiFi and Bluetooth.

Updated May 23, 2024

A bug report contains device logs, stack traces, and other diagnostic information to help you find and fix bugs in your app.

Updated Apr 12, 2023