JapaneseCalendar.IsLeapMonth(Int32, Int32, Int32)JapaneseCalendar.IsLeapMonth(Int32, Int32, Int32)JapaneseCalendar.IsLeapMonth(Int32, Int32, Int32)JapaneseCalendar.IsLeapMonth(Int32, Int32, Int32) Method

Definition

Determines whether the specified month in the specified year in the specified era is a leap month.

``````public:
override bool IsLeapMonth(int year, int month, int era);``````
``public override bool IsLeapMonth (int year, int month, int era);``
``override this.IsLeapMonth : int * int * int -> bool``
``Public Overrides Function IsLeapMonth (year As Integer, month As Integer, era As Integer) As Boolean``

Parameters

year
Int32 Int32 Int32 Int32

An integer that represents the year.

month
Int32 Int32 Int32 Int32

An integer from 1 to 12 that represents the month.

era
Int32 Int32 Int32 Int32

An integer that represents the era.

Returns

This method always returns `false`, unless overridden by a derived class.

Exceptions

`year` is outside the range supported by the calendar.

-or-

`month` is outside the range supported by the calendar.

-or-

`era` is outside the range supported by the calendar.

Examples

The following example calls IsLeapMonth for all the months in the first five years in the current era.

``````using namespace System;
using namespace System::Globalization;
int main()
{

// Creates and initializes a JapaneseCalendar.
JapaneseCalendar^ myCal = gcnew JapaneseCalendar;

// Checks all the months in five years in the current era.
int iMonthsInYear;
for ( int y = 1; y <= 5; y++ )
{
Console::Write( " {0}:\t", y );
iMonthsInYear = myCal->GetMonthsInYear( y, JapaneseCalendar::CurrentEra );
for ( int m = 1; m <= iMonthsInYear; m++ )
Console::Write( "\t {0}", myCal->IsLeapMonth( y, m, JapaneseCalendar::CurrentEra ) );
Console::WriteLine();

}
}

/*
This code produces the following output.

1:              False   False   False   False   False   False   False   False   False   False   False   False
2:              False   False   False   False   False   False   False   False   False   False   False   False
3:              False   False   False   False   False   False   False   False   False   False   False   False
4:              False   False   False   False   False   False   False   False   False   False   False   False
5:              False   False   False   False   False   False   False   False   False   False   False   False

*/
``````
``````using System;
using System.Globalization;

public class SamplesJapaneseCalendar  {

public static void Main()  {

// Creates and initializes a JapaneseCalendar.
JapaneseCalendar myCal = new JapaneseCalendar();

// Checks all the months in five years in the current era.
int iMonthsInYear;
for ( int y = 1; y <= 5; y++ )  {
Console.Write( "{0}:\t", y );
iMonthsInYear = myCal.GetMonthsInYear( y, JapaneseCalendar.CurrentEra );
for ( int m = 1; m <= iMonthsInYear; m++ )
Console.Write( "\t{0}", myCal.IsLeapMonth( y, m, JapaneseCalendar.CurrentEra ) );
Console.WriteLine();
}

}

}

/*
This code produces the following output.

1:              False   False   False   False   False   False   False   False   False   False   False   False
2:              False   False   False   False   False   False   False   False   False   False   False   False
3:              False   False   False   False   False   False   False   False   False   False   False   False
4:              False   False   False   False   False   False   False   False   False   False   False   False
5:              False   False   False   False   False   False   False   False   False   False   False   False

*/
``````
``````Imports System.Globalization

Public Class SamplesJapaneseCalendar

Public Shared Sub Main()

' Creates and initializes a JapaneseCalendar.
Dim myCal As New JapaneseCalendar()

' Checks all the months in five years in the current era.
Dim iMonthsInYear As Integer
Dim y As Integer
For y = 1 To 5
Console.Write("{0}:" + ControlChars.Tab, y)
iMonthsInYear = myCal.GetMonthsInYear(y, JapaneseCalendar.CurrentEra)
Dim m As Integer
For m = 1 To iMonthsInYear
Console.Write(ControlChars.Tab + "{0}", myCal.IsLeapMonth(y, m, JapaneseCalendar.CurrentEra))
Next m
Console.WriteLine()
Next y

End Sub

End Class 'SamplesJapaneseCalendar

'This code produces the following output.

'

'1:              False   False   False   False   False   False   False   False   False   False   False   False

'2:              False   False   False   False   False   False   False   False   False   False   False   False

'3:              False   False   False   False   False   False   False   False   False   False   False   False

'4:              False   False   False   False   False   False   False   False   False   False   False   False

'5:              False   False   False   False   False   False   False   False   False   False   False   False

``````

Remarks

Leap years in the Japanese calendar correspond to the same leap years in the Gregorian calendar. A leap year in the Gregorian calendar is defined as a Gregorian year that is evenly divisible by four, except if it is divisible by 100. However, Gregorian years that are divisible by 400 are leap years. A common year has 365 days and a leap year has 366 days.

A leap month is an entire month that occurs only in a leap year. The Japanese calendar does not have any leap months.