Java File Size Get getFileSizeLabel(long sizeInBytes)

Description

get File Size Label

License

Apache License

Declaration

public static String getFileSizeLabel(long sizeInBytes) 

Method Source Code

//package com.java2s;
/*/*ww  w .ja v a 2 s .  c  om*/
 *    Copyright 2016 Roche NimbleGen Inc.
 *
 *  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 {
    private static final DecimalFormat DF = new DecimalFormat("###,###.##");
    private static final String GB = "GB";
    private static final String MB = "MB";
    private static final String KB = "KB";
    private static final String BYTES = "B";

    public static String getFileSizeLabel(long sizeInBytes) {
        double divisor;
        String units = "";
        if (sizeInBytes > Math.pow(10, 9)) {
            divisor = Math.pow(10, 9);
            units = GB;
        } else if (sizeInBytes > Math.pow(10, 6)) {
            divisor = Math.pow(10, 6);
            units = MB;
        } else if (sizeInBytes > Math.pow(10, 3)) {
            divisor = Math.pow(10, 3);
            units = KB;
        } else {
            divisor = 1.0;
            units = BYTES;
        }

        double relativeSize = (double) sizeInBytes / divisor;
        String fileSizeLabel = "";

        synchronized (DF) {
            fileSizeLabel = DF.format(relativeSize) + units;
        }

        return fileSizeLabel;
    }
}

Related

1. getFilesize(String path)
2. getFileSize2(String filename)
3. getFileSizeAggregate(String[] files)
4. getFileSizeFormat(double inputvalue)
5. getFileSizeFormat(String total_size)
6. getFileSizeRecursive(File file, boolean subFolders)
7. getFileSizes(File f)
8. getFileSizeString(File file, boolean si)
9. getFilesizeString(long size)