yoyo.framework.standard.shared.CalendarUtils.java Source code

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Here is the source code for yoyo.framework.standard.shared.CalendarUtils.java

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// ========================================================================
// Copyright (C) YOYO Project Team. All rights reserved.
// GNU AFFERO GENERAL PUBLIC LICENSE Version 3, 19 November 2007
// http://www.gnu.org/licenses/agpl-3.0.txt
// ========================================================================
package yoyo.framework.standard.shared;

import java.util.Date;
import org.apache.commons.lang3.time.DateUtils;

/**
 * ?
 * @author nilcy
 */
public final class CalendarUtils {
    /** ???? */
    private static final int PREV_AMOUNT = -1;
    /** ??? */
    private static final int NEXT_AMOUNT = 1;

    /** ? */
    private CalendarUtils() {
    }

    /**
     * ??
     * @param aDate ?
     * @return 
     */
    public static Date prevWeek(final Date aDate) {
        return DateUtils.addWeeks(aDate, PREV_AMOUNT);
    }

    /**
     * ??
     * @param aDate ?
     * @return 
     */
    public static Date nextWeek(final Date aDate) {
        return DateUtils.addWeeks(aDate, NEXT_AMOUNT);
    }

    /**
     * ??
     * @param aDate ?
     * @return 
     */
    public static Date prevMonth(final Date aDate) {
        return DateUtils.addMonths(aDate, PREV_AMOUNT);
    }

    /**
     * ??
     * @param aDate ?
     * @return 
     */
    public static Date nextMonth(final Date aDate) {
        return DateUtils.addMonths(aDate, NEXT_AMOUNT);
    }

    /**
     * ???
     * @param aDate ?
     * @return 
     */
    public static Date prevYear(final Date aDate) {
        return DateUtils.addYears(aDate, PREV_AMOUNT);
    }

    /**
     * ??
     * @param aDate ?
     * @return 
     */
    public static Date nextYear(final Date aDate) {
        return DateUtils.addYears(aDate, NEXT_AMOUNT);
    }
}