Java Utililty Methods Decimal Round

List of utility methods to do Decimal Round

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Description

The list of methods to do Decimal Round are organized into topic(s).

Method

doubleroundNumDecimals(double d, int num)
round Num Decimals 
StringBuilder format = new StringBuilder("#.");
for (int i = 0; i < num; i++) {
    format.append("#");
DecimalFormat f = new DecimalFormat(format.toString());
return Double.valueOf(f.format(d));
doubleroundOffToTwoDecimal(double value)
round Off To Two Decimal 
DecimalFormat df = new DecimalFormat("0.00");
return new Double(df.format(value));
doubleroundThreeDecimals(double d)
round Three Decimals 
if (Double.isInfinite(d) || Double.isNaN(d)) {
    return d;
DecimalFormat threeDForm = new DecimalFormat("#.###");
return Double.valueOf(threeDForm.format(d));
DoubleroundTwoDecimals(double d)
This method rounds up a decimal number up to N decimals. 
DecimalFormat twoDForm = new DecimalFormat("#.##");
return Double.valueOf(twoDForm.format(d));
doubleroundTwoDecimals(double d)
round Two Decimals 
try {
    DecimalFormat twoDForm = new DecimalFormat("#.##");
    return Double.valueOf(twoDForm.format(d));
} catch (NumberFormatException e) {
    return d;
DoubleroundTwoDecimals(Double d)
Round up to two decimals 
DecimalFormat twoDForm = new DecimalFormat("###.##");
DecimalFormatSymbols dfs = new DecimalFormatSymbols();
dfs.setDecimalSeparator('.');
twoDForm.setDecimalFormatSymbols(dfs);
return Double.valueOf(twoDForm.format(d));
StringroundTwoDecimals(double d)
round Two Decimals 
DecimalFormat twoDForm = new DecimalFormat("#.##");
return twoDForm.format(d);
Stringto_decimal(double v)
Returns a decimal representation of a double (no scientific notation used). 
final NumberFormat nf = NumberFormat.getInstance(Locale.ENGLISH);
nf.setMinimumFractionDigits(2);
nf.setMaximumFractionDigits(4);
return nf.format(v);
StringtoLimitDecimalFloatStr(double number, int newScale)
to Limit Decimal Float Str 
NumberFormat nf = NumberFormat.getNumberInstance();
nf.setMaximumFractionDigits(newScale);
return nf.format(number);
StringtoNumber(Double value, Double defaultValue)
Remove decimals 
String number = "";
if (value == null) {
    value = defaultValue;
if (value != null) {
    NumberFormat nf = NumberFormat.getInstance();
    nf.setGroupingUsed(false);
    nf.setMaximumFractionDigits(0);
...