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

BigDecimalsafeToBigDecimal(Object obj1)
safe To Big Decimal 
BigDecimal result = BigDecimal.ZERO;
if (obj1 == null) {
    return result;
try {
    result = new BigDecimal(obj1.toString());
} catch (Exception ex) {
return result;
VectorscalarMult(BigDecimal scalar, Vector a)
scalar Mult 
Vector<BigDecimal> c = (Vector<BigDecimal>) a.clone();
for (int i = 0; i < a.size(); i++)
    c.set(i, scalar.multiply(((BigDecimal) a.get(i))));
return c;
BigDecimalscale(BigDecimal b1, BigDecimal b2)
scale 
return b1.divide(b2, 5).multiply(BigDecimal.valueOf(100));
BigDecimalscale2(BigDecimal valor)
Retorna valor com scale = 2 e RoundingMode.FLOOR 
if (null != valor)
    return valor.setScale(2, RoundingMode.FLOOR);
else
    return valor;
BigDecimalscaleCurrency(BigDecimal amount)
scale Currency 
return amount.setScale(2, BigDecimal.ROUND_HALF_UP);
BigDecimalsecondsBigDecimalFromDuration(long s, int n)
seconds Big Decimal From Duration 
if (n == 0)
    return BigDecimal.valueOf(s);
int scale = 9;
boolean huge = (int) s != s;
long ns = huge ? n : s * 1000000000L + n;
while (ns % 10 == 0) {
    ns = ns / 10;
    scale--;
...
intsignum(final BigDecimal value)
If value is null return 0 otherwise the signum(). 
return value == null ? 0 : value.signum();
BigDecimalsine(BigDecimal x)
sine 
BigDecimal lastVal = x.add(BigDecimal.ONE);
BigDecimal currentValue = x;
BigDecimal xSquared = x.multiply(x);
BigDecimal numerator = x;
BigDecimal denominator = BigDecimal.ONE;
int i = 0;
while (lastVal.compareTo(currentValue) != 0) {
    lastVal = currentValue;
...
MapsortByValues(Map map)
sort By Values 
List sortedByValueList = new LinkedList(map.entrySet());
Collections.sort(sortedByValueList, new Comparator<Map.Entry<String, BigDecimal>>() {
    public int compare(Entry<String, BigDecimal> o1, Entry<String, BigDecimal> o2) {
        return ((Comparable) (o2).getValue()).compareTo((o1).getValue());
});
Map<String, BigDecimal> sortedHashMap = new LinkedHashMap<String, BigDecimal>();
for (Iterator it = sortedByValueList.iterator(); it.hasNext();) {
...
MapsortMapByBDValue(Map oriMap)
sort Map By BD Value 
Map<T, BigDecimal> sortedMap = new LinkedHashMap<T, BigDecimal>();
if (oriMap != null && !oriMap.isEmpty()) {
    List<Map.Entry<T, BigDecimal>> entryList = new ArrayList<Map.Entry<T, BigDecimal>>(oriMap.entrySet());
    Collections.sort(entryList, new Comparator<Map.Entry<T, BigDecimal>>() {
        public int compare(Entry<T, BigDecimal> entry1, Entry<T, BigDecimal> entry2) {
            BigDecimal value1 = entry1.getValue();
            BigDecimal value2 = entry2.getValue();
            return value2.compareTo(value1);
...