es.tekniker.framework.ktek.util.Utils.java Source code

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Here is the source code for es.tekniker.framework.ktek.util.Utils.java

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/*
*
* Copyright 2015 IK4-Tekniker All Rights Reserved
*
* This file is part of Health Questionnaire SE at FISTAR https://www.fi-star.eu/  
*
* Health Questionnaire SE is free software: you can redistribute it and/or
* modify it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* Health Questionnaire SE 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 Affero
* General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with Health Questionnaire SE. If not, see http://www.gnu.org/licenses/.
*
* For those usages not covered by this license please contact with
* patricia.casla at tekniker dot es
*
* Author: Ignacio Lazaro Llorente
*/
package es.tekniker.framework.ktek.util;

import java.util.Calendar;
import java.util.Date;
import java.util.TimeZone;

import org.apache.commons.lang.RandomStringUtils;

public class Utils {

    public static String generateRandomLetter() {
        String sRandom = null;

        int count = 1;
        char[] chars = new char[16];

        chars[0] = 'a';
        chars[1] = 'b';
        chars[2] = 'd';
        chars[3] = 'e';

        chars[4] = 'f';
        chars[5] = 'g';
        chars[6] = 'h';
        chars[7] = 'i';

        chars[8] = 'j';
        chars[9] = 'k';
        chars[10] = 'l';
        chars[11] = 'm';

        chars[12] = 'n';
        chars[13] = 'o';
        chars[14] = 'p';
        chars[15] = 'r';

        sRandom = RandomStringUtils.random(count, chars);

        return sRandom;
    }

    public static Calendar getCalendarGMT() {
        Calendar c = Calendar.getInstance();
        c.setTimeZone(TimeZone.getTimeZone("GMT"));
        return c;
    }

    public static long getTimeinMillis4TimeGMT(int hours, int minutes, int seconds) {
        Calendar c = getCalendarGMT();
        System.out.println("current: " + c.getTime());

        c.set(Calendar.HOUR_OF_DAY, hours);
        c.set(Calendar.MINUTE, minutes);
        c.set(Calendar.SECOND, seconds);

        System.out.println("GMT Time: " + c.getTime());

        long timeinmillis = c.getTimeInMillis();
        System.out.println(" system time in millis " + timeinmillis);

        return timeinmillis;
    }

    public static long getTimeinMillis4FullDateTimeGMT(int year, int month, int day, int hours, int minutes,
            int seconds) {
        Calendar c = getCalendarGMT();

        c.set(Calendar.YEAR, year);
        c.set(Calendar.MONTH, month);
        c.set(Calendar.DAY_OF_MONTH, day);

        c.set(Calendar.HOUR_OF_DAY, hours);
        c.set(Calendar.MINUTE, minutes);
        c.set(Calendar.SECOND, seconds);

        System.out.println("New Time: " + c.getTime());

        long timeinmillis = c.getTimeInMillis();
        System.out.println(" system time in millis " + timeinmillis);

        return timeinmillis;
    }

    private static Calendar getCalendarUTC() {
        Calendar c = Calendar.getInstance();
        System.out.println("current: " + c.getTime());

        TimeZone z = c.getTimeZone();
        int offset = z.getRawOffset();
        if (z.inDaylightTime(new Date())) {
            offset = offset + z.getDSTSavings();
        }
        int offsetHrs = offset / 1000 / 60 / 60;
        int offsetMins = offset / 1000 / 60 % 60;

        System.out.println("offsetHrs: " + offsetHrs);
        System.out.println("offsetMins: " + offsetMins);
        c.add(Calendar.HOUR_OF_DAY, (-offsetHrs));
        c.add(Calendar.MINUTE, (-offsetMins));

        System.out.println("GMT Time: " + c.getTime());

        return c;
    }

    private static long getTimeinMillisUTC() {
        Calendar c = getCalendarUTC();
        System.out.println("current: " + c.getTime());

        long timeinmillis = c.getTimeInMillis();
        System.out.println(" System time in millis " + timeinmillis);

        return timeinmillis;
    }

    private static long getTimeinMillis4TimeUTC(int hours, int minutes, int seconds) {
        Calendar c = Calendar.getInstance();
        System.out.println("current: " + c.getTime());

        TimeZone z = c.getTimeZone();
        int offset = z.getRawOffset();
        if (z.inDaylightTime(new Date())) {
            offset = offset + z.getDSTSavings();
        }
        int offsetHrs = offset / 1000 / 60 / 60;
        int offsetMins = offset / 1000 / 60 % 60;

        System.out.println("offsetHrs: " + offsetHrs);
        System.out.println("offsetMins: " + offsetMins);

        c.set(Calendar.HOUR_OF_DAY, (hours - offsetHrs));
        c.set(Calendar.MINUTE, (minutes - offsetMins));
        c.set(Calendar.SECOND, seconds);

        System.out.println("GMT Time: " + c.getTime());

        long timeinmillis = c.getTimeInMillis();
        System.out.println(" system time in millis " + timeinmillis);

        return timeinmillis;
    }

    private static long getTimeinMillis4FullDateTimeUTC(int year, int month, int day, int hours, int minutes,
            int seconds) {
        Calendar c = Calendar.getInstance();
        System.out.println("current: " + c.getTime());

        TimeZone z = c.getTimeZone();
        int offset = z.getRawOffset();
        if (z.inDaylightTime(new Date())) {
            offset = offset + z.getDSTSavings();
        }
        int offsetHrs = offset / 1000 / 60 / 60;
        int offsetMins = offset / 1000 / 60 % 60;

        System.out.println("offsetHrs: " + offsetHrs);
        System.out.println("offsetMin: " + offsetMins);

        c.set(Calendar.YEAR, year);
        c.set(Calendar.MONTH, month);
        c.set(Calendar.DAY_OF_MONTH, day);

        c.set(Calendar.HOUR_OF_DAY, (hours - offsetHrs));
        c.set(Calendar.MINUTE, (minutes - offsetMins));
        c.set(Calendar.SECOND, seconds);

        System.out.println("GMT Time: " + c.getTime());

        long timeinmillis = c.getTimeInMillis();
        System.out.println(" system time in millis " + timeinmillis);

        return timeinmillis;
    }

}