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All implemented methods in calendars:

Method Signature	Return Type
• add (int field, int amount)	void
Adds or subtracts the specified amount of time to the given calendar field, based on the calendar's rules .
• after (Object whenCalendar)	boolean
Returns whether this Calendar represents a time after the time represented by the specified Object.
• before (Object whenCalendar)	boolean
Returns whether this Calendar represents a time before the time represented by the specified Object.
• clear ()	void
Sets all the calendar field values and the time value (millisecond offset from the Epoch) of this Calendar undefined.
• clear (int field)	void
Sets the given calendar field value and the time value (millisecond offset from the Epoch) of this Calendar undefined.
• clone ()	void
Creates and returns a copy of this object.
• compareTo (PrimeCalendar anotherCalendar)	int
Compares the time values (millisecond offsets from the Epoch) represented by two PrimeCalendar objects.
• equals (Object object)	boolean
Compares this Calendar to the specified Object.
• get (int field)	int
Returns the value of the given calendar field.
• getActualMaximum (int field)	int
Returns the maximum value that the specified calendar field could have, given the time value of this Calendar.
• getActualMinimum (int field)	int
Returns the minimum value that the specified calendar field could have, given the time value of this Calendar.
• getDisplayName (int field, int style, Locale locale)	String
Returns the string representation of the calendar field value in the given style and locale.
• getDisplayNames (int field, int style, Locale locale)	Map
Returns a Map containing all names of the calendar field in the given style and locale and their corresponding field values.
• getFirstDayOfWeek ()	int
Gets what the first day of the week is; e.g., SUNDAY in the U.S., MONDAY in France.
• getGreatestMinimum (int field)	int
Returns the highest minimum value for the given calendar field of this Calendar instance.
• getLeastMaximum (int field)	int
Returns the lowest maximum value for the given calendar field of this Calendar instance.
• getMaximum (int field)	int
Returns the maximum value for the given calendar field of this Calendar instance.
• getMinimum (int field)	int
Returns the minimum value for the given calendar field of this Calendar instance.
• getTime ()	Date
Returns a Date object representing this Calendar's time value (millisecond offset from the Epoch").
• getTimeInMillis ()	long
Returns this Calendar's time value in milliseconds.
• getTimeZone ()	TimeZone
Gets the time zone.
• hashCode ()	int
Returns a hash code for this calendar.
• isSet (int field)	boolean
Determines if the given calendar field has a value set, including cases that the value has been set by internal fields calculations triggered by a get method call.
• roll (int field, boolean up)	void
Adds or subtracts (up/down) a single unit of time on the given time field without changing larger fields.
• roll (int field, int amount)	void
Adds the specified (signed) amount to the specified calendar field without changing larger fields.
• set (int field, int value)	void
Sets the given calendar field to the given value.
• set (int year, int month, int dayOfMonth)	void
Sets the values for the calendar fields YEAR, MONTH, and DAY_OF_MONTH.
• set (int year, int month, int dayOfMonth, int hourOfDay, int minute)	void
Sets the values for the calendar fields YEAR, MONTH, DAY_OF_MONTH, HOUR_OF_DAY, and MINUTE.
• set (int year, int month, int dayOfMonth, int hourOfDay, int minute, int second)	void
Sets the values for the fields YEAR, MONTH, DAY_OF_MONTH, HOUR, MINUTE, and SECOND.
• setFirstDayOfWeek (int value)	void
Sets what the first day of the week is; e.g., SUNDAY in the U.S., MONDAY in France.
• setTime (Date date)	void
Sets this Calendar's time with the given Date.
• setTimeInMillis (long millis)	void
Sets this Calendar's current time from the given long value.
• setTimeZone (TimeZone value)	void
Sets the time zone with the given time zone value.
• toString ()	String
Return a string representation of this calendar.

Fields:

Field	Type
• Calendar.ERA	int
Field number for get and set indicating the era, e.g., AD or BC in the Julian calendar.
• Calendar.YEAR	int
Field number for get and set indicating the year.
• Calendar.MONTH	int
Field number for get and set indicating the month.
• Calendar.WEEK_OF_YEAR	int
Field number for get and set indicating the week number within the current year.
• Calendar.WEEK_OF_MONTH	int
Field number for get and set indicating the week number within the current month.
• Calendar.DATE	int
Field number for get and set indicating the day of the month.
• Calendar.DAY_OF_MONTH	int
Field number for get and set indicating the day of the month.
• Calendar.DAY_OF_YEAR	int
Field number for get and set indicating the day number within the current year.
• Calendar.DAY_OF_WEEK	int
Field number for get and set indicating the day of the week.
• Calendar.DAY_OF_WEEK_IN_MONTH	int
Field number for get and set indicating the ordinal number of the day of the week within the current month.
• Calendar.AM_PM	int
Field number for get and set indicating whether the HOUR is before or after noon.
• Calendar.HOUR	int
Field number for get and set indicating the hour of the morning or afternoon.
• Calendar.HOUR_OF_DAY	int
Field number for get and set indicating the hour of the day.
• Calendar.MINUTE	int
Field number for get and set indicating the minute within the hour.
• Calendar.SECOND	int
Field number for get and set indicating the second within the minute.
• Calendar.MILLISECOND	int
Field number for get and set indicating the millisecond within the second.
• Calendar.ZONE_OFFSET	int
Field number for get and set indicating the raw offset from GMT in milliseconds.
• Calendar.DST_OFFSET	int
Field number for get and set indicating the daylight saving offset in milliseconds.