Java Utililty Methods Size Format

List of utility methods to do Size Format

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Description

The list of methods to do Size Format are organized into topic(s).

Method

StringformatSize(long bytes)
Caller should append 'B' or 'b' as appropriate NOTE: formatDuration2() recommended in most cases for readability 
double val = bytes;
int scale = 0;
while (val >= 1024) {
    scale++;
    val /= 1024;
DecimalFormat fmt = new DecimalFormat("##0.00");
String str = fmt.format(val);
...
StringformatSize(long bytes)
format Size 
if (bytes < 1024)
    return bytes + " B";
else if (bytes < 1024 * 1024)
    return singleDecimalDigit(bytes / 1024.0) + " KB";
else if (bytes < 1024 * 1024 * 1024)
    return singleDecimalDigit(bytes / 1024.0 / 1024.0) + " MB";
else
    return singleDecimalDigit(bytes / 1024.0 / 1024.0 / 1024.0) + " GB";
...
StringformatSize(long bytes)
format Size 
DecimalFormat df = new DecimalFormat(".0");
if (bytes > TB)
    return df.format(bytes * 1.0d / TB) + "TB";
if (bytes > GB)
    return df.format(bytes * 1.0d / GB) + "GB";
if (bytes > MB)
    return df.format(bytes * 1.0d / MB) + "MB";
if (bytes > KB)
...
StringformatSize(long fileSize)
format Size 
if (fileSize < 1024) {
    return String.valueOf(fileSize) + "bytes";
} else if (fileSize >= 1024 && fileSize < 1048576) {
    float temp = (float) fileSize / 1024;
    return df.format(temp) + "Kb";
} else if (fileSize >= 1048576 && fileSize < 1073741824) {
    float temp = (float) fileSize / 1048576;
    return df.format(temp) + "Mb";
...
StringformatSize(long longSize)
format Size 
return formatSize(longSize, -1);
StringformatSize(long longSize, int decimalPos)
Formats a file size 
NumberFormat fmt = NumberFormat.getNumberInstance();
if (decimalPos >= 0) {
    fmt.setMaximumFractionDigits(decimalPos);
final double size = longSize;
double val = size / (1024 * 1024 * 1024);
if (val > 1) {
    return fmt.format(val).concat(" GB");
...
StringformatSize(long size)
Format the document size for human readers 
DecimalFormat df = new DecimalFormat("#0.0");
String str;
if (size / 1024 < 1) {
    str = size + " B";
} else if (size / 1048576 < 1) {
    str = df.format(size / 1024.0) + " KB";
} else if (size / 1073741824 < 1) {
    str = df.format(size / 1048576.0) + " MB";
...
StringformatSize(long size)
Formats a file size as a human-readable string. 
if (size < 1024) {
    return size + " bytes";
double sz = size;
String units;
double nsz;
String format = "0";
if (size >= GIGABYTE) {
...
StringformatSize(long size)
format Size 
if (size > 1000000000)
    return DecimalFormat.getNumberInstance().format(size / 1000000000) + " GB";
if (size > 1000000)
    return DecimalFormat.getNumberInstance().format(size / 1000000) + " MB";
if (size > 1000)
    return DecimalFormat.getNumberInstance().format(size / 1000) + " KB";
return DecimalFormat.getNumberInstance().format(size) + " B";
StringformatSize(long size)
format Size 
DecimalFormat df = new DecimalFormat("###,###.#");
long div = 1;
long testval = size;
for (int i = 0; i < 6; i++) {
    if ((testval >>>= 10) == 0) {
        return df.format((double) size / div) + units[i];
    div <<= 10;
...