Java Utililty Methods Decimal Round

List of utility methods to do Decimal Round

  1. HOME
  2. Java
  3. D
  4. Decimal Round

Description

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

Method

doubleroundDecimal(double d, int radix)
Zaokragla wartosc, do wyznaczonego miejsca po przecinku 
NumberFormat format = NumberFormat.getInstance();
format.setGroupingUsed(false);
format.setMaximumFractionDigits(radix);
double res;
try {
    res = format.parse(format.format(d)).doubleValue();
} catch (ParseException e) {
    res = Double.NaN;
...
StringroundDecimalPlaces(final double input, final int decimalPlaces)
round Decimal Places 
if (decimalPlaces <= 0) {
    return NORMAL.format(Math.round(input));
final StringBuilder format = new StringBuilder("###0" + DS);
final StringBuilder negativeZero = new StringBuilder("-0" + DS);
for (int i = 0; i < decimalPlaces; i++) {
    format.append('0');
    negativeZero.append('0');
...
floatroundDecimals(double d, int numOfDec)
round Decimals 
if (numOfDec <= 0)
    return Math.round(d);
String decFormatStr = "#.";
for (int i = 0; i < numOfDec; i++)
    decFormatStr += "#";
DecimalFormat decFormat = new DecimalFormat(decFormatStr);
return Float.valueOf(decFormat.format(d)).floatValue();
StringroundDistanceFromMeterToKm(final double distanceInMeter)
z.B. 
final double distanceInKilometer = distanceInMeter / KILOMETER_IN_METER;
final DecimalFormat format = new DecimalFormat("0.000"); 
final DecimalFormatSymbols dfs = new DecimalFormatSymbols();
dfs.setDecimalSeparator('.');
format.setDecimalFormatSymbols(dfs);
return format.format(distanceInKilometer);
doubleroundDouble(double iVal)
round Double 
DecimalFormat df = new DecimalFormat(".0");
String tmp = df.format(iVal);
return Double.parseDouble(tmp);
StringroundDouble(double num, int decimal)
round Double 
String s = "0.";
for (int i = 0; i < decimal; i++) {
    s += "0";
NumberFormat f = new DecimalFormat(s);
s = f.format(num);
return s;
StringroundDouble(double numero, int ceros_a_la_derecha)
round Double 
String mascara = "#.";
String formateado = "";
String num = "";
for (int i = 0; i < ceros_a_la_derecha; i++) {
    mascara += "0";
NumberFormat formatter = new DecimalFormat(mascara);
num = "" + formatter.format(numero);
...
doubleroundDouble(Double val, int precision)
round Double 
Double dVal = adjDecimalSep(val);
BigDecimal bigNumber1 = new BigDecimal(dVal, MathContext.UNLIMITED); 
return bigNumber1.setScale(precision, BigDecimal.ROUND_CEILING).doubleValue();
StringroundedNumber(double inVal)
Format a number to a sensible precision 
int numDigits = 0;
if (inVal < 1.0)
    numDigits = 3;
else if (inVal < 10.0)
    numDigits = 2;
else if (inVal < 100.0)
    numDigits = 1;
FORMAT_FLEX.setMaximumFractionDigits(numDigits);
...
doubleRoundFractionalTons(double d)
Round Fractional Tons 
return Double.valueOf(dft.format(d));