DateAdapter.java

/* 
 * The MIT License
 *
 * Copyright 2015 Apothesource, Inc.
 *
 * 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.apothesource.pillfill.utilites;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

/**
 * Created by Michael Ramirez on 5/29/15. Copyright 2015, Apothesource, Inc. All Rights Reserved.
 */
public class DateAdapter {
    public static Date parseDate(String s) {
        try {
            SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
            return sdf.parse(s);
        } catch (ParseException e) {
            e.printStackTrace();
            return null;
        }
    }

    public static String printDate(Date dt) {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        return sdf.format(dt);
    }

    public static Date addYearsToDate(Date baseDate, int years) {
        Calendar c = Calendar.getInstance();
        c.setTime(baseDate);
        c.add(Calendar.YEAR, years);
        return c.getTime();
    }

    public static Date addMonthsToDate(Date baseDate, int months) {
        Calendar c = Calendar.getInstance();
        c.setTime(baseDate);
        c.add(Calendar.MONTH, months);
        return c.getTime();
    }

    public static int getDaysBetween(Date beginDate, Date endDate) {
        long day1 = beginDate.getTime(); // in milliseconds.
        long day2 = endDate.getTime(); // in milliseconds.
        long days = (day2 - day1) / 86400000;
        return (int) Math.floor(days);
    }

    public static Date addDaysToDate(Date date, int days) {
        Calendar c = Calendar.getInstance();
        c.setTime(date);
        c.add(Calendar.DAY_OF_MONTH, days);
        return c.getTime();
    }
}