Java File Size Get readableFileSize(final long size)

Description

readable File Size

License

Apache License

Declaration

public static String readableFileSize(final long size) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright 2013 Christian Schneider/*w  ww.j a  v  a  2  s .co m*/
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/

import java.text.DecimalFormat;

public class Main {
    public static final String[] UNITS = new String[] { "B", "KB", "MB", "GB", "TB", "PB", "EB" };
    public static final DecimalFormat DECIMAL_FORMAT = new DecimalFormat("#,##0.0");

    public static String readableFileSize(final long size) {
        if (size < 0)
            return "";

        if (size == 0)
            return "0.0";

        final int digitGroup = (int) (Math.log10(size) / Math.log10(1024));

        return DECIMAL_FORMAT.format(size / Math.pow(1024, digitGroup)) + " " + UNITS[digitGroup];
    }
}

Related

1. getSizeErrorMessage(String pattern, Long maxFileSize, Long fileSize, String fileName)
2. getStringSizeLengthFile(long size)
3. humanFileSize(Long longFileSize)
4. humanReadableFileSize(long size)
5. prettyFileSize(long size)
6. readableFileSize(long size)
7. readableFileSize(long size)
8. stringifyFileSize(double value)
9. toFileSize(final long longSize, final int decimalPos)