Java Easter getSundayOfEaster(final int year)

Description

get Sunday Of Easter

License

Open Source License

Declaration

protected static Calendar getSundayOfEaster(final int year) 

Method Source Code

//package com.java2s;
/*/*from w w  w  . j a  v a  2  s  .  c  o m*/
 * Copyright (C) 2013 Marcius da Silva da Fonseca.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301 USA
 */

import java.util.Calendar;

import java.util.GregorianCalendar;

public class Main {
    protected static Calendar getSundayOfEaster(final int year) {
        // step 2
        int a = year % 19;
        // step 3
        int b = year / 100;
        int c = year % 100;
        // step 4
        int d = b / 4;
        int e = b % 4;
        // step 5
        int g = (8 * b + 13) / 25;
        // step 6
        int h = (19 * a + b - d - g + 15) % 30;
        // step 7
        int j = c / 4;
        int k = c % 4;
        // step 8
        int m = (a + 11 * h) / 319;
        // step 9
        int r = (2 * e + 2 * j - k - h + m + 32) % 7;
        // step 10
        int n = (h - m + r + 90) / 25;
        // step 11 (finally)
        int p = (h - m + r + n + 19) % 32;
        return new GregorianCalendar(year, n - 1, p);
    }
}

Related

1. calculateEasterDay(int year)
2. getEasterDay(int year)