Java File Size Readable Format formatFileSize(long bytes, boolean si)

Description

format File Size

License

Open Source License

Declaration

public static String formatFileSize(long bytes, boolean si) 

Method Source Code

//package com.java2s;
/*/*from  ww  w .j a  va2s .  com*/
 * Copyright (c) 2016. Sten Martinez
 *
 * 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 2 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, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

public class Main {
    public static String formatFileSize(long bytes, boolean si) {
        // thanks stackoverflow
        int unit = si ? 1000 : 1024;
        if (bytes < unit)
            return bytes + " B";
        int exp = (int) (Math.log(bytes) / Math.log(unit));
        String pre = (si ? "kMGTPE" : "KMGTPE").charAt(exp - 1) + (si ? "" : "i");
        return String.format("%.1f %sB", bytes / Math.pow(unit, exp), pre);
    }
}

Related

1. formatByteSizeToString(long bytes)
2. formatDataSize(long size)
3. FormatDataSize(long uBytes)
4. FormatDataSizeKB(long uBytes)
5. formatFileSize(long bytes)
6. formatFileSize(long fileSize)
7. formatFileSize(long fileSize)
8. formatFileSize(long fileSize)
9. formatFileSize(long fileSizeLong)