Java Long Number Readable Format formatBytes(long bytes)

Description

format Bytes

License

Open Source License

Declaration

public static String formatBytes(long bytes) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

public class Main {
    private static final int UNIT = 1024;
    private static final String B = "B";
    private static final String KB = "KB";
    private static final String MB = "MB";
    private static final String GB = "GB";
    private static final String TB = "TB";

    public static String formatBytes(long bytes) {
        double bytesDouble = bytes;
        int unitIndex = 0;
        String unit;//from w w w . java2  s  .co m
        while (bytesDouble >= UNIT) {
            unitIndex++;
            bytesDouble = Math.round(bytesDouble * 100 / UNIT) / 100.0;
        }
        switch (unitIndex) {
        case 0:
            unit = B;
            break;
        case 1:
            unit = KB;
            break;
        case 2:
            unit = MB;
            break;
        case 3:
            unit = GB;
            break;
        case 4:
            unit = TB;
            break;
        default:
            unit = "PB";
        }
        return bytesDouble + " " + unit;
    }
}

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