Java Utililty Methods Number Format Pattern

param += 0.001;
java.text.DecimalFormat df = new java.text.DecimalFormat("#0.00");
return df.format(param);

NumberFormat format = NumberFormat.getIntegerInstance();
format.setMinimumIntegerDigits(1);
format.setMaximumIntegerDigits(4);
format.setGroupingUsed(false);
format.setParseIntegerOnly(true);
return format;

DecimalFormatSymbols symbols = new DecimalFormatSymbols();
symbols.setDecimalSeparator('.');
DecimalFormat format = new DecimalFormat("###.##", symbols);
format.setGroupingUsed(false);
format.setMaximumFractionDigits(Integer.MAX_VALUE);
return format;

NumberFormat nf = NumberFormat.getInstance(Locale.US);
return setFloatDigits(nf);

String formattedValue;
value = value.replace(",", ".");
if (value.equals("-")) {
    return value;
if (value.equals("NaN")) {
    return "---";
if ((((Math.abs(Double.parseDouble(value) * 1000) < 1.0))
        && ((Math.abs(Double.parseDouble(value) * 1000) > 0.0)))
        || (Math.abs(Double.parseDouble(value) / 1000.0) > 10)) {
    NumberFormat formatter = new DecimalFormat("0.###E0");
    formattedValue = formatter.format(Double.parseDouble(value));
else if ((name.toLowerCase().equals("attributes")) || (name.toLowerCase().equals("bound"))
        || (name.toLowerCase().equals("distinct labelsets")) || (name.toLowerCase().equals("instances"))
        || (name.toLowerCase().equals("labels x instances x features"))
        || (name.toLowerCase().equals("labels"))
        || (name.toLowerCase().equals("number of binary attributes"))
        || (name.toLowerCase().equals("number of labelsets up to 2 examples"))
        || (name.toLowerCase().equals("number of labelsets up to 5 examples"))
        || (name.toLowerCase().equals("number of labelsets up to 10 examples"))
        || (name.toLowerCase().equals("number of labelsets up to 50 examples"))
        || (name.toLowerCase().equals("number of nominal attributes"))
        || (name.toLowerCase().equals("number of numeric attributes"))
        || (name.toLowerCase().equals("number of unique labelsets")) || (name.toLowerCase()
                .equals("number of unconditionally dependent label pairs by chi-square test"))) {
    NumberFormat formatter = new DecimalFormat("#0");
    formattedValue = formatter.format(Double.parseDouble(value));
else {
    NumberFormat formatter = new DecimalFormat("#0.000");
    formattedValue = formatter.format(Double.parseDouble(value));
formattedValue = formattedValue.replace(",", ".");
return formattedValue;

if (_formatter == null) {
    _formatter = NumberFormat.getInstance();
    _formatter.setGroupingUsed(false);
    _formatter.setMaximumFractionDigits(3);
return _formatter;

return new DecimalFormat("0.0000");

String pattern = decimalFormat.toPattern();
StringBuffer buf = new StringBuffer(pattern);
DecimalFormatSymbols dfs = decimalFormat.getDecimalFormatSymbols();
char[] charList = new char[4];
charList[0] = dfs.getZeroDigit();
charList[1] = dfs.getDigit();
charList[2] = dfs.getDecimalSeparator();
charList[3] = dfs.getGroupingSeparator();
...

boolean result = false;
try {
    new DecimalFormat(pattern);
    result = true; 
} catch (Throwable e) {
return result;

NumberFormat numberFormat = NumberFormat.getInstance(Locale.US);
if ((0 < formatting.length()) && Character.isDigit(formatting.charAt(0))) {
    numberFormat.setMinimumIntegerDigits(Integer.parseInt(formatting.charAt(0) + ""));
    if ((2 < formatting.length()) && (formatting.charAt(1) == '.')
            && Character.isDigit(formatting.charAt(2))) {
        numberFormat.setMaximumFractionDigits(Integer.parseInt(formatting.charAt(2) + ""));
        numberFormat.format(number, outputTo, new FieldPosition(0));
        return 3;
...