Java Utililty Methods Long Number Readable Format

List of utility methods to do Long Number Readable Format

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Description

The list of methods to do Long Number Readable Format are organized into topic(s).

Method

StringtoHumanReadableSize(long bytes)
to Human Readable Size 
boolean si = false;
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) + ""; 
return String.format("%.2f %sB", bytes / Math.pow(unit, exp), pre);
StringtoHumanSize(long bytes)
to Human Size 
int unit = 0;
double value = bytes;
while (value > 4096) {
    value = value / 1024;
    unit++;
if (unit == 0) {
    return String.valueOf(bytes) + units[unit];
...
StringtoKilobytes(long bytes)
This static method converts the passed in number of bytes into a kilobyte string grouping digits with locale-dependant thousand separator and with "KB" locale-dependant unit at the end. 
if (bytes < 0)
    return "? " + GENERAL_UNIT_KILOBYTES;
long kbytes = bytes / 1024;
if ((bytes & 512) != 0 || (bytes > 0 && bytes < 1024))
    kbytes++;
return NUMBER_FORMAT0.format(kbytes) + GENERAL_UNIT_KILOBYTES;
StringtoLocalizedInteger(long value)
This static method converts the passed in number into a localizable representation of an integer, with digit grouping using locale dependant separators. 
return NUMBER_FORMAT0.format(value);
longtoMB(long b)
to MB 
return b / (1024 * 1024);
StringtoMB(long bytes)
to MB 
if (bytes < 0) {
    return "n/a";
if (bytes > 1024 * 1024 * 1024) {
    return "" + (bytes / 1024 / 1024 / 1024) + "G";
} else if (bytes > 1024 * 1024) {
    return "" + (bytes / 1024 / 1024) + "M";
} else if (bytes > 1024) {
...
StringtoReadableBytes(long bytes)
to Readable Bytes 
DecimalFormat df = new DecimalFormat("###,###.#");
if (bytes < 1024) {
    return df.format(bytes) + " bytes";
} else if (bytes < 1024 * 1024) {
    return df.format((float) bytes / 1024) + " KB";
} else if (bytes < 1024 * 1024 * 1024) {
    return df.format((float) bytes / 1024 / 1024) + " MB";
} else {
...
StringtoReadableNumber(long number)
to Readable Number 
DecimalFormat df = new DecimalFormat("###,###");
return df.format(number);
StringtoStringLong(long id)
to String Long 
long time = (System.currentTimeMillis() >> 42 << 42) + (id >> 22);
long inc = (id >> 8) & xFFFFFF;
long instanceId = id & xFF;
return id + " (DEC)"
        + "\n" + toString(id) + "  (HEX)" 
        + "\ntime=" + SDF_MED.format(new Date(time)) + ", instanceId=" + instanceId + ", inc=" + inc;