edu.coeia.util.DateUtil.java Source code

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Here is the source code for edu.coeia.util.DateUtil.java

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/* 
 * Copyright (C) 2014 Center of Excellence in Information Assurance
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package edu.coeia.util;

/**
 *
 * @author wajdyessam
 */

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

import java.text.SimpleDateFormat;
import java.text.DateFormat;
import org.joda.time.DateTime;
import org.joda.time.Days;

public class DateUtil {

    /*
     * Suppress default constructor for noninstantiability
     */
    private DateUtil() {
        throw new AssertionError();
    }

    public static String getTimeFromMilliseconds(long ms) {
        int time = (int) ms / 1000;
        int seconds = time % 60;
        int mintues = (time % 3600) / 60;
        int hours = time / 3600;

        String format = String.format("%%0%dd", 2);
        String secondsString = String.format(format, seconds);
        String mintuesString = String.format(format, mintues);
        String hoursString = String.format(format, hours);

        return hoursString + ":" + mintuesString + ":" + secondsString;
    }

    public static String getCurrentDate() {
        Date d = new Date();
        return formatDate(d);
    }

    public static String getFirstDate() {
        Date d = new Date(0);
        return formatDate(d);
    }

    public static String formatDate(final String date) throws ParseException {
        if (date.isEmpty())
            return date;

        DateFormat df = new SimpleDateFormat("EEE MMM dd HH:mm:ss zzz yyyy");
        Date formattedDate = df.parse(date);
        return formatedDateWithTime(formattedDate);
    }

    public static String formatedDateWithTime(final Date date) {
        DateFormat df = new SimpleDateFormat("dd/MM/yyyy hh:mm:ss");
        Calendar c = Calendar.getInstance();
        c.setTime(date);
        return df.format(c.getTime());
    }

    public static String formatDate(Date d) {
        DateFormat df = new SimpleDateFormat("dd/MM/yyyy");
        Calendar c = Calendar.getInstance();
        c.setTime(d);
        return df.format(c.getTime());
    }

    public static String formatDateForLogFileName(Date date) {
        DateFormat dateFormat = new SimpleDateFormat("dd-MM-yyyy");
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);

        return dateFormat.format(calendar.getTime());
    }

    public static String formatDateTime(Date d) {
        DateFormat df = new SimpleDateFormat("hh:mm:ss - dd/MM/yyyy");
        Calendar c = Calendar.getInstance();
        c.setTime(d);

        return df.format(c.getTime());
    }

    public static Date addDays(Date date, int days) {
        GregorianCalendar now = new GregorianCalendar();
        now.setTime(date);
        now.add(Calendar.DATE, days);

        return (now.getTime());
    }

    // Joda Implementation
    public static int subtractDays(Date date1, Date date2) {
        DateTime install = new DateTime(date1);
        DateTime current = new DateTime(date2);

        return Days.daysBetween(current, install).getDays();
    }
}