Java Utililty Methods Size

List of utility methods to do Size

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Description

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

Method

NumberFormatcreateSizeFormat(Locale locale)
create Size Format 
NumberFormat sizeFormat = DecimalFormat.getNumberInstance(locale);
sizeFormat.setGroupingUsed(true);
sizeFormat.setMaximumFractionDigits(0);
sizeFormat.setMinimumFractionDigits(0);
return sizeFormat;
StringgetBytesSpecificationDescription(double sizeInBytes, String formatSpec)
Returns a short string description of the size, in bytes, specified. 
DecimalFormat df = new DecimalFormat(formatSpec);
df.setDecimalSeparatorAlwaysShown(false);
double teraBytes = sizeInBytes / TERA_BYTES;
if (teraBytes >= 1.0d) {
    return df.format(teraBytes) + " TB";
double gigaBytes = sizeInBytes / GIGA_BYTES;
if (gigaBytes >= 1.0d) {
...
StringgetByteStr(long size)
Return nice byte size, ex. 
if (size < 1024)
    return "" + size + " byte" + (size == 1 ? "" : "s");
else if (size < 1024 * 1024)
    return "" + new DecimalFormat("##0.00").format(size / 1024.) + " kB";
else
    return "" + new DecimalFormat("##0.00").format(size / (1024. * 1024.)) + " MB";
StringgetDataSize(long size)
get Data Size 
if (size < 1024) {
    return size + "bytes";
} else if (size < 1024L * 1024) {
    double kbsize = size / 1024D;
    return formater.format(kbsize) + "KB";
} else if (size < 1024L * 1024L * 1024) {
    double mbsize = size / 1024D / 1024D;
    return formater.format(mbsize) + "MB";
...
IntegergetFontSizeInPoints(String fontSizeWithUnit)
get Font Size In Points 
fontSizeWithUnit = fontSizeWithUnit.trim();
DecimalFormat formatter = new DecimalFormat();
DecimalFormatSymbols formatterSymbol = new DecimalFormatSymbols();
formatterSymbol.setDecimalSeparator('.');
formatter.setDecimalFormatSymbols(formatterSymbol);
ParsePosition position = new ParsePosition(0);
Number size = formatter.parse(fontSizeWithUnit, position);
if (size == null)
...
StringgetFormatSize(double size)
get Format Size 
NumberFormat nf = NumberFormat.getInstance();
nf.setMaximumFractionDigits(2);
int i = 0;
String[] unit = FILE_SIZE_UNIT;
for (i = 0; i < unit.length; i++) {
    if ((long) (size / 1024) > 0) {
        size /= 1024;
    } else {
...
StringgetFormatSize(long size)
get Format Size 
double d = size;
if (size < KB_SCALE) {
    return size + " B";
if (size < MB_SCALE) {
    return df.format(d / KB_SCALE) + " KB";
if (size < GB_SCALE) {
...
StringgetFormattedSize(long size)
get Formatted Size 
StringBuilder sb = new StringBuilder();
float megabytes = size / MEGABYTE;
if (megabytes > 1) {
    sb.append(formatter.format(megabytes));
    sb.append(" MB");
} else {
    float kilobytes = size / KILOBYTE;
    sb.append(formatter.format(kilobytes));
...
StringgetReadableByteSize(long size)
get Readable Byte Size 
if (size <= 0) {
    return "0";
final String[] units = new String[] { "B", "KB", "MB", "GB", "TB", "PB", "EB" };
int digitGroups = (int) (Math.log10(size) / Math.log10(1024));
return new DecimalFormat("#,##0.#").format(size / Math.pow(1024, digitGroups)) + " " + units[digitGroups];
StringgetReadableSize(long size)
get Readable Size 
final String[] units = new String[] { "B", "KB", "MB", "GB", "TB" };
final int unitIndex = (int) (Math.log10(size) / 3);
final double unitValue = 1 << (unitIndex * 10);
final String readableSize = new DecimalFormat("#,##0.#").format(size / unitValue) + " " + units[unitIndex];
return readableSize;