Java Utililty Methods Long Number Format

List of utility methods to do Long Number Format

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Description

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

Method

Stringcomma(long n)
Copied from com.shopwiki.text.Pretty 
return numberFormat.get().format(n);
Stringformat(final long number, final int length)
Trim an integer with leading zeros to a given maximum length. 
if (length > FORMATED_ZERO.length()) {
    throw new IllegalArgumentException("maximum length " + FORMATED_ZERO + " exceeded: " + length);
if (length < 1) {
    throw new IllegalArgumentException("length must be bigger than 0: " + length);
final String temp = FORMATED_ZERO + number;
return temp.substring(Math.min(temp.length() - length, FORMATED_ZERO.length()));
...
Stringformat(final long value, final long divider, final String unit)
format 
final double result = divider > 1 ? (double) value / (double) divider : (double) value;
return String.format("%.1f %s", result, unit);
Stringformat(final long value, final long divider, final String unit)
Helper method for convertToStringRepresentation(long) 
final double result = divider > 1 ? (double) value / (double) divider : (double) value;
return String.format("%.1f %s", Double.valueOf(result), unit);
Stringformat(long bytes)
Depending on the size, return a size formatted in bytes, K, M, G or T bytes. 
if (bytes < 0) {
    return "invalid input(" + bytes + ")";
if (bytes < 1.0) {
    return String.format("%d byte", bytes);
} else if (bytes < KILO) {
    return String.format("%d bytes", bytes);
} else if (bytes < MEGA) {
...
Stringformat(long mem)
format 
double dMem = mem;
String[] units = new String[] { "", "KB", "MB", "GB" };
for (String unit : units) {
    if (dMem < 1024)
        return String.format("%.1f %s", dMem, unit);
    dMem /= 1024;
return String.format("%.1f %s", dMem * 1024, units[units.length - 1]);
...
Stringformat(long milliseconds)
Only display the hours / minutes / seconds / milliseconds 
StringBuilder buff = new StringBuilder();
long elapsedTime = milliseconds / 1000;
if (elapsedTime / 3600 > 0) {
    add(buff, String.format(format, elapsedTime / 3600), "h");
if ((elapsedTime % 3600) / 60 > 0) {
    add(buff, String.format(format, (elapsedTime % 3600) / 60), "m");
if ((elapsedTime % 60) > 0) {
    add(buff, String.format(format, elapsedTime % 60), "s");
if (milliseconds % 1000 > 0) {
    add(buff, String.format(format, milliseconds % 1000), "ms");
return buff.toString();
Stringformat(long ms)
Transform the time in milliseconds to the time in "dd hh:mm:ss.SSS" format. 
int ss = 1000;
int mi = ss * 60;
int hh = mi * 60;
int dd = hh * 24;
long day = ms / dd;
long hour = (ms - day * dd) / hh;
long minute = (ms - day * dd - hour * hh) / mi;
long second = (ms - day * dd - hour * hh - minute * mi) / ss;
...
Stringformat(long numero, int numeroZeri)
format 
return rSet(numero + "", numeroZeri, "0");
Stringformat(long offsetMillis)
quick & dirty format 
offsetMillis /= 60 * 1000;
String sign = "+";
if (offsetMillis < 0) {
    offsetMillis = -offsetMillis;
    sign = "-";
return sign + String.valueOf(offsetMillis / 60) + ":"
        + String.valueOf(100 + (offsetMillis % 60)).substring(1, 3);
...