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Implements the Umm Al-Qura calendar system in Java language.
There is a newer version: 2.0.2
/*
 * The MIT License
 *
 * Copyright 2015 Mouaffak A. Sarhan
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

package com.github.msarhan.ummalqura.calendar;

import java.util.Arrays;
import java.util.Locale;
import java.util.ResourceBundle;

/**
 * @author Mouaffak A. Sarhan.
 */
class UmmalquraDateFormatSymbols {

    /**
     * The locale which is used for initializing this DateFormatSymbols object.
     *
     * @serial
     */
    Locale locale = null;

    /**
     * Month strings. For example: "Muharram", "Safar", etc.  An array of 12 strings, indexed by
     * UmmalquraCalendar.MUHARRAM, UmmalquraCalendar.SAFAR, etc.
     *
     * @serial
     */
    String[] months = null;

    /**
     * Short month strings. For example: "Muh", "Saf", etc.  An array of 12 strings, indexed by
     * UmmalquraCalendar.MUHARRAM, UmmalquraCalendar.SAFAR, etc.
     *
     * @serial
     */
    String[] shortMonths = null;

    public UmmalquraDateFormatSymbols() {
        initializeData(Locale.getDefault(Locale.Category.FORMAT));
    }

    public UmmalquraDateFormatSymbols(Locale locale) {
        initializeData(locale);
    }

    /**
     * Gets month strings. For example: "Muharram", "Safar", etc.
     *
     * @return the month strings.
     */
    public String[] getMonths() {
        return Arrays.copyOf(months, months.length);
    }

    /**
     * Gets short month strings. For example: "Muh", "Saf", etc.
     *
     * @return the short month strings.
     */
    public String[] getShortMonths() {
        return Arrays.copyOf(shortMonths, shortMonths.length);
    }

    private void initializeData(Locale desiredLocale) {
        if (!("ar".equalsIgnoreCase(desiredLocale.getLanguage()) || "en"
                .equalsIgnoreCase(desiredLocale.getLanguage()))) {
            throw new IllegalArgumentException("Supported locales are 'English' and 'Arabic'");
        }
        locale = desiredLocale;

        // Initialize the fields from the ResourceBundle for locale.
        ResourceBundle resource = ResourceBundle
                .getBundle("com.github.msarhan.ummalqura.calendar.text.UmmalquraFormatData",
                        locale);

        months = resource.getStringArray("MonthNames");
        shortMonths = resource.getStringArray("MonthAbbreviations");
    }

}