Java Utililty Methods BigDecimal

List of utility methods to do BigDecimal

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Description

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

Method

BigDecimalstdBigDecimal(List vector, BigDecimal avg)
std Big Decimal 
BigDecimal accum = BigDecimal.ZERO;
BigDecimal accum2 = BigDecimal.ZERO;
BigDecimal len = BigDecimal.valueOf(vector.size());
for (Double float1 : vector) {
    BigDecimal val = BigDecimal.valueOf(float1);
    BigDecimal dev = val.subtract(avg);
    accum = accum.add(dev.pow(2));
    accum2 = accum2.add(dev);
...
BigDecimalstddev(List numbers, boolean biasCorrected, MathContext context)
Returns the standard deviation of the numbers. 
BigDecimal stddev;
int n = numbers.size();
if (n > 0) {
    if (n > 1) {
        stddev = sqrt(var(numbers, biasCorrected, context));
    } else {
        stddev = BigDecimal.ZERO;
} else {
    stddev = BigDecimal.valueOf(Double.NaN);
return stddev;
MapstdDevMaxFromMapField(List> dataList, String fieldName, BigDecimal stdDevMultiplier)
Returns Map with total, squaredTotal, count, average, stdDev, maximum; fieldName field in Maps must have type BigDecimal; if count of non-null fields is less than 2 returns null as cannot calculate a standard deviation 
BigDecimal total = BigDecimal.ZERO;
BigDecimal squaredTotal = BigDecimal.ZERO;
int count = 0;
for (Map<String, Object> dataMap : dataList) {
    if (dataMap == null)
        continue;
    BigDecimal value = (BigDecimal) dataMap.get(fieldName);
    if (value == null)
...
BigDecimalStr2BigDecimal(String a)
Str Big Decimal 
try {
    return (new BigDecimal(a));
} catch (Exception e) {
    return BigDecimal.valueOf(0);
BigDecimalstr2BigDicimal(String strbigdecimal)
str Big Dicimal 
if (strbigdecimal == null || strbigdecimal.trim().length() == 0)
    return null;
BigDecimal bd = null;
try {
    bd = new BigDecimal(strbigdecimal);
} catch (Exception e) {
    return null;
return bd;
BigDecimalstripAndOrRescale(BigDecimal value)
strip And Or Rescale 
value = value.stripTrailingZeros();
try {
    value.toBigIntegerExact();
    value = value.setScale(1, RoundingMode.UNNECESSARY);
} catch (ArithmeticException ignored) {
return value;
BigDecimalstripTrailingZeros(BigDecimal bigDecimal)
strip Trailing Zeros 
if (bigDecimal.compareTo(BigDecimal.ZERO) == 0) {
    return BigDecimal.ZERO;
} else {
    return bigDecimal.stripTrailingZeros();
BigDecimalstripTrailingZeros(BigDecimal value)
Workaround for bug #6480539: BigDecimal.stripTrailingZeros() has no effect on zero itself ("0.0"). 
return (value.compareTo(BigDecimal.ZERO) == 0 ? BigDecimal.ZERO : value.stripTrailingZeros());
BigDecimalstripTrailingZeros(final BigDecimal decimal)
Strips trailing zeros from a BigDecimal. 
if (decimal.compareTo(ZERO) == 0) {
    return ZERO;
} else {
    return decimal.stripTrailingZeros();
BigDecimalstrToBigDecimal(final String arg)
Converte para java.math.BigDecimal um String de inteiros sem ponto ou virgula. 
String value = null;
if (arg != null) {
    char chars[] = arg.toCharArray();
    for (int i = 0; i < chars.length; i++) {
        if ('0' != chars[i]) {
            value = arg.substring(i);
            break;
    if (value != null) {
        value = value.substring(0, value.length() - 2) + "." + value.substring(value.length() - 2);
return new BigDecimal(value);