Java File Size Readable Format getFileSizeInMB(String fileName)

Description

get File Size In MB

License

Open Source License

Declaration

public static float getFileSizeInMB(String fileName) 

Method Source Code

//package com.java2s;
/**//from   www  .  ja va 2s .  co  m
 * BeehiveZ is a business process model and instance management system.
 * Copyright (C) 2011  
 * Institute of Information System and Engineering, School of Software, Tsinghua University,
 * Beijing, China
 *
 * Contact: jintao05@gmail.com 
 *
 * This program is a 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 with the version of 2.
 *
 * 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.
 */

import java.io.File;

public class Main {
    public static float getFileSizeInMB(String fileName) {
        float ret = getFileSizeInBytes(fileName);
        ret = ret / (float) (1024 * 1024);
        return ret;
    }

    public static long getFileSizeInBytes(String fileName) {
        long ret = 0;
        File f = new File(fileName);
        if (f.isFile()) {
            return f.length();
        } else if (f.isDirectory()) {
            File[] contents = f.listFiles();
            for (int i = 0; i < contents.length; i++) {
                if (contents[i].isFile()) {
                    ret += contents[i].length();
                } else if (contents[i].isDirectory())
                    ret += getFileSizeInBytes(contents[i].getPath());
            }
        }
        return ret;
    }
}

Related

1. formatSizeInBytes(int size)
2. formatSpaceUsage(long size)
3. formatToolBarDisplay(String text, int size)
4. getFileSizeInByte(File file)
5. getFileSizeInBytes(File f)
6. getHumanSize(File dir)
7. getReadableFileSize(int size)
8. getReadableFileSize(long fileSizeInBytes)
9. getReadableFileSize(long size)