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

StringpadString(String stringToPad, int size)
Method "padString". 
return String.format("%" + size + "s", stringToPad);
double[][]read(byte[] input, int size)
read 
try (ByteArrayInputStream inputStream = new ByteArrayInputStream(input)) {
    return read(inputStream, size);
StringreadableBytes(long byteSize)
Formats byte size in nice format 
if (byteSize < 0l) {
    return "invalid";
if (byteSize < 1l) {
    return "empty";
float byteSizeF = new java.lang.Float(byteSize).floatValue();
String unit = "bytes";
...
StringreadableSize(long num)
Convert the given size into a human readable string. 
float l = num;
NumberFormat formatter = (NumberFormat) FORMATTER.clone();
if (l < 1024) {
    return formatter.format(l) + " bytes"; 
} else if (l < 1048576) {
    return (formatter.format(l / 1024) + " KiB");
} else {
    return (formatter.format(l / 1048576) + " MiB");
...
StringreadableSize(long size)
readable Size 
NumberFormat formatter = NumberFormat.getNumberInstance(Locale.ROOT);
formatter.setMaximumFractionDigits(2);
if (size / (1024 * 1024 * 1024) > 0) {
    return formatter.format(size * 1.0d / (1024 * 1024 * 1024)) + " GB";
} else if (size / (1024 * 1024) > 0) {
    return formatter.format(size * 1.0d / (1024 * 1024)) + " MB";
} else if (size / 1024 > 0) {
    return formatter.format(size * 1.0d / 1024) + " KB";
...
StringreadableSize(long size)
Return human readable file size. 
if (size <= 1)
    return size + " byte";
final String[] units = new String[] { "bytes", "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];
StringreadableSize(long size, DecimalFormat format)
readable Size 
if (size <= 0)
    return "0";
final String[] units = new String[] { "B", "KB", "MB", "GB", "TB" };
int digitGroups = (int) (Math.log10(size) / Math.log10(1024));
return format.format(size / Math.pow(1024, digitGroups)) + " " + units[digitGroups];
StringrenderNumber(int n, int size)
render Number 
NumberFormat nf = NumberFormat.getInstance();
nf.setMinimumIntegerDigits(size);
nf.setGroupingUsed(false);
return nf.format(n);
Stringsize(long l)
size 
String dsize = "";
long k = l;
double m = l / 1024.0;
double g = l / 1048576.0;
double t = l / 1073741824.0;
DecimalFormat dec = new DecimalFormat("0.00");
if (k > 1) {
    dsize = dec.format(k).concat(" KB");
...
Stringsize2human(long size)
sizehuman 
if (size > SIZE_GIGABYTE) {
    DecimalFormat df = new DecimalFormat("#.00");
    return df.format(((size + SIZE_GIGABYTE / 2) / SIZE_GIGABYTE)) + " GB";
if (size > SIZE_MEGABYTE) {
    return ((size + SIZE_MEGABYTE / 2) / SIZE_MEGABYTE) + " MB";
return ((size + SIZE_KILOBYTE / 2) / SIZE_KILOBYTE) + " KB";
...