Package org.jfree.date
Class EasterSundayRule
- java.lang.Object
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- org.jfree.date.AnnualDateRule
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- org.jfree.date.EasterSundayRule
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- All Implemented Interfaces:
java.lang.Cloneable
public class EasterSundayRule extends AnnualDateRule
An annual date rule for Easter (Sunday). The algorithm used here was obtained from a Calendar FAQ which can be found at:http://www.tondering.dk/claus/calendar.html.
It is based on an algorithm by Oudin (1940) and quoted in "Explanatory Supplement to the Astronomical Almanac", P. Kenneth Seidelmann, editor.
- Author:
- David Gilbert
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Constructor Summary
Constructors Constructor Description EasterSundayRule()
Default constructor.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description SerialDate
getDate(int year)
Returns the date of Easter Sunday for the given year.-
Methods inherited from class org.jfree.date.AnnualDateRule
clone
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Constructor Detail
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EasterSundayRule
public EasterSundayRule()
Default constructor.
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Method Detail
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getDate
public SerialDate getDate(int year)
Returns the date of Easter Sunday for the given year. See the class description for the source of the algorithm.This method supports the AnnualDateRule interface.
- Specified by:
getDate
in classAnnualDateRule
- Parameters:
year
- the year to check.- Returns:
- the date of Easter Sunday for the given year.
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