Java Utililty Methods Number Format Pattern

List of utility methods to do Number Format Pattern

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Description

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

Method

Stringformat(String value)
Format only six decimal digits after decimal point. 
String subStr = null;
int dot = value.indexOf("."); 
subStr = value.substring(0, value.length() < dot + 7 ? value.length() : dot + 7);
return subStr;
StringformatAmtByComma(String amt, int len)
format Amt By Comma 
if (null == amt || amt.length() < 1) {
    return "0";
NumberFormat formater = null;
BigDecimal num = new BigDecimal(amt);
if (len == 0) {
    formater = new DecimalFormat("###,###");
} else {
...
StringformatBigNumber(long value)
Format like ###000000 
return bigCountFormat.format(value);
StringformatBitRate(long bytes)
Returns human readable bit rate, to be displayed as a label. 
String unit;
double value;
long bits = bytes * 8;
if (bits > GIGA) {
    value = bits / GIGA;
    unit = GBITS_UNIT;
    if (value > 10.0) {
        value = 10.0;
...
StringformatBytes(long bytes)
format Bytes 
if (bytes < 1024L) {
    return bytes + " bytes";
if (bytes < 1024L * 1024L) {
    return formatOneDecimal(bytes, 1024L) + " KB";
if (bytes < 1024L * 1024L * 1024L) {
    return formatOneDecimal(bytes, 1024L * 1024L) + " MB";
...
StringformatBytes(long bytes)
Format bytes to KB, MB or GB. 
double size = 0;
if (bytes < 1024) {
    return bytes + " Bytes";
} else if (bytes < 1048576) {
    size = bytes / 1024;
    return formatDecimal(size) + " KB";
} else if (bytes < 1073741824) {
    size = bytes / 1048576;
...
StringformatBytes(long bytes)
Format the bytes into readable text 
double value = bytes;
String unit = "B";
if (bytes >= 1024) {
    int exponent = (int) (Math.log(bytes) / Math.log(1024));
    exponent = Math.min(exponent, 4);
    switch (exponent) {
    case 1:
        unit = "KB";
...
StringformatBytes(long bytes)
Format a number of bytes into Megabytes/Kilobytes depending on the quantity. 
if (bytes > 1024 * 1024) {
    return MEGABYTE_FORMAT.format(((double) bytes) / (1024 * 1024));
} else if (bytes > 1024) {
    return KILOBYTE_FORMAT.format(((double) bytes) / (1024));
} else {
    return Long.toString(bytes) + "B";
StringformatBytes(long numBytes)
format Bytes 
StringBuffer buf = new StringBuffer();
boolean bDetails = true;
double num = numBytes;
if (numBytes < KB) {
    buf.append(numBytes + " B");
    bDetails = false;
} else if (numBytes < MB) {
    buf.append(dfmt(num / KB) + " KB");
...
StringformatDashboardNumber(Number amount)
format Dashboard Number 
return dashboardFormat.format(amount);