Java File Size Get getSizeErrorMessage(String pattern, Long maxFileSize, Long fileSize, String fileName)

Description

get Size Error Message

License

Apache License

Declaration

public static String getSizeErrorMessage(String pattern,
            Long maxFileSize, Long fileSize, String fileName) 

Method Source Code

//package com.java2s;
/*//  ww  w.  j  av a  2 s .  co m
 * Copyright 2013 gergo.
 *
 * 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.MessageFormat;

public class Main {
    public static String getSizeErrorMessage(String pattern,
            Long maxFileSize, Long fileSize, String fileName) {
        return MessageFormat.format(pattern,
                getHumanReadableByteCount(maxFileSize, false),
                getHumanReadableByteCount(fileSize, false), fileName);
    }

    public static String getHumanReadableByteCount(long bytes, boolean si) {
        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. getFileSizeString(File file, boolean si)
2. getFilesizeString(long size)
3. getFileSizeStringFor(File file)
4. getFolderSize(File folder)
5. getSize(long fileSize)
6. getStringSizeLengthFile(long size)
7. humanFileSize(Long longFileSize)
8. humanReadableFileSize(long size)
9. prettyFileSize(long size)