Java Long Number to Date formatDate(final long ticks, final SimpleDateFormat format)

Description

format Date

License

Open Source License

Declaration

public static String formatDate(final long ticks, final SimpleDateFormat format) 

Method Source Code

//package com.java2s;
/*// w  w w  . j  a v a2  s. c om
 * This file is part of Commodus.
 *
 * Commodus 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.
 *
 * Commodus 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 Commodus.  If not, see <http://www.gnu.org/licenses/>.
 */

import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.Locale;
import java.util.TimeZone;

public class Main {
    public static final int ticksAtMidnight = 18000;
    public static final int ticksPerDay = 24000;
    public static final int ticksPerHour = 1000;
    public static final double ticksPerMinute = 1000d / 60d;
    public static final double ticksPerSecond = 1000d / 60d / 60d;

    public static String formatDate(final long ticks, final SimpleDateFormat format) {
        return format.format(ticksToDate(ticks));
    }

    public static Date ticksToDate(long ticks) {
        // Assume the server time starts at 0. It would start on a day.
        // But we will simulate that the server started with 0 at midnight.
        ticks = ticks - ticksAtMidnight + ticksPerDay;

        // How many ingame days have passed since the server start?
        final long days = ticks / ticksPerDay;
        ticks -= days * ticksPerDay;

        // How many hours on the last day?
        final long hours = ticks / ticksPerHour;
        ticks -= hours * ticksPerHour;

        // How many minutes on the last day?
        final long minutes = (long) Math.floor(ticks / ticksPerMinute);
        final double dticks = ticks - minutes * ticksPerMinute;

        // How many seconds on the last day?
        final long seconds = (long) Math.floor(dticks / ticksPerSecond);

        // Now we create an english GMT calendar (We want no daylight savings)
        final Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("GMT"), Locale.ENGLISH);
        cal.setLenient(true);

        // And we set the time to 0! And append the time that passed!
        cal.set(0, Calendar.JANUARY, 1, 0, 0, 0);
        cal.add(Calendar.DAY_OF_YEAR, (int) days);
        cal.add(Calendar.HOUR_OF_DAY, (int) hours);
        cal.add(Calendar.MINUTE, (int) minutes);
        cal.add(Calendar.SECOND, (int) seconds + 1); // To solve rounding errors.

        return cal.getTime();
    }
}

Related

1. format(long dateInMillis, String pattern)
2. format(Long dateMs, String type)
3. format(Long dateTmie, String formate)
4. format(long time, SimpleDateFormat format)
5. formatDate(final long date)
6. formatDate(final long time)
7. formatDate(final long timestamp)
8. formatDate(long absTime)
9. formatDate(long d)