Java File Time Get getFileTimestamp(long timeStampinMillis)

Description

Converts a Unix Timestamp into File Time

License

Open Source License

Parameter

Parameter	Description
timeStampinMillis	a parameter

Return

A 64-bit long giving a filetime timestamp

Declaration

public static long getFileTimestamp(long timeStampinMillis) 

Method Source Code

//package com.java2s;
/*// ww  w .j  a v a  2s .  c om
This file is part of the OdinMS Maple Story Server
Copyright (C) 2008 Patrick Huy <patrick.huy@frz.cc> 
Matthias Butz <matze@odinms.de>
Jan Christian Meyer <vimes@odinms.de>
    
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License version 3
as published by the Free Software Foundation. You may not use, modify
or distribute this program under any other version of the
GNU Affero General Public License.
    
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 Affero General Public License for more details.
    
You should have received a copy of the GNU Affero General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

import java.util.SimpleTimeZone;

public class Main {
    private final static long FT_UT_OFFSET = 116444520000000000L;

    /**
     * Converts a Unix Timestamp into File Time
     * 
     * @param timeStampinMillis
     * @return A 64-bit long giving a filetime timestamp
     */
    public static long getFileTimestamp(long timeStampinMillis) {
        return getFileTimestamp(timeStampinMillis, false);
    }

    public static long getFileTimestamp(long timeStampinMillis, boolean roundToMinutes) {
        if (isDST()) {
            timeStampinMillis -= 3600000L; // 60 * 60 * 1000
        }
        timeStampinMillis += 14 * 60 * 60 * 1000;
        long time;
        if (roundToMinutes) {
            time = (timeStampinMillis / 1000 / 60) * 600000000;
        } else {
            time = timeStampinMillis * 10000;
        }
        return time + FT_UT_OFFSET;
    }

    public static boolean isDST() {
        return SimpleTimeZone.getDefault().useDaylightTime();
    }
}

Related

1. getFileLastModified(File file)
2. getFileLastModified(File file)