Java Utililty Methods Double Number Format

List of utility methods to do Double Number Format

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Description

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

Method

StringformatDouble(double val)
format Double 
String num = String.format("%.2f", val);
if (!num.startsWith("-")) {
    return pad(" " + num, 6);
} else {
    return pad(num, 6);
StringformatDouble(double val)
format Double 
String out = String.valueOf(val);
if (out.length() > 5) {
    boolean round = false;
    if (round && out.charAt(5) != '.')
        if (Integer.parseInt(String.valueOf(out.charAt(5))) > 4)
            round = true;
    out = out.substring(0, 5);
    if (round && out.charAt(4) != '.')
...
StringformatDouble(double val, int prec)
format Double 
String formatter = "%." + prec + "f";
return String.format(formatter, val);
StringformatDouble(double val, int precision)
format Double 
String format_string = "%1$." + precision + "f";
return String.format(format_string, val);
StringformatDouble(double value)
This method takes double value as a parameter and formats it to two decimal points and returns the formatted value. 
double valueHundred = roundDouble(value) * 100;
Double temp = new Double(roundDouble(valueHundred));
String cost = String.valueOf(temp.longValue());
if (cost.equals("0")) {
    cost = "0.00";
} else {
    cost = cost.substring(0, cost.length() - 2) + "." + cost.substring(cost.length() - 2);
return cost;
StringformatDouble(double value)
Format the given double with four digits precision, but leave it without a decimal point. 
if (equalsEps(Math.round(value), value)) {
    return Long.toString(Math.round(value));
return Double.toString(Math.round(value * 10000.0) / 10000.0);
StringformatDouble(double value)
Formats a value with two decimals, using spaces to separate thousands as: ddd ddd ddd.dd. 
boolean isNegative = value < 0.0 || (value == 0.0 && 1 / value < 0.0);
if (isNegative) {
    value = -value;
char[] buffer = new char[1 + 19 + 6 + 3];
long intValue = (long) value;
int decValue = (int) ((value - intValue) * 100 + 0.5);
int index = buffer.length - 1;
...
StringformatDouble(double value)
format Double 
return truncate("" + value, 4);
StringformatDouble(double value, int decimals)
format Double 
String doubleStr = "" + value;
int index = doubleStr.indexOf(".") != -1 ? doubleStr.indexOf(".") : doubleStr.indexOf(",");
if (index == -1)
    return doubleStr;
if (decimals == 0) {
    return doubleStr.substring(0, index);
int len = index + decimals + 1;
...
StringformatDouble(final double value)
format Double 
return String.format(DOUBLE_FORMAT, value);