Java Utililty Methods BigDecimal

Calendar c = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
c.clear();
int hour = gmtHour.intValue();
c.set(Calendar.HOUR_OF_DAY, hour);
Date t = c.getTime();
c = Calendar.getInstance();
c.setTime(t);
int localHour = c.get(Calendar.HOUR_OF_DAY);
...

BigDecimal ret = aValue;
for (final BigDecimal a : aValues)
    if (a.compareTo(ret) > 0)
        ret = a;
return ret;

BigDecimal fraction = BigDecimal.ONE.subtract(BigDecimal.ONE.divide(BigDecimal.TEN.pow(scale)));
BigDecimal whole = BigDecimal.TEN.pow(precision - scale).subtract(BigDecimal.ONE);
return whole.add(fraction);

int precision = DEFAULT_DECIMAL_PRECISION;
if (decimals != null) {
    for (BigDecimal decimal : decimals) {
        if (decimal != null && decimal.scale() > precision)
            precision = decimal.scale();
return precision;
...

int count = 0;
BigDecimal sum = new BigDecimal(0);
for (final BigDecimal d : vals) {
    if (d == null) {
        continue;
    sum = sum.add(d);
    count++;
...

BigDecimal bd;
bd = hours.multiply(new BigDecimal(3600 * 1000));
return bd.longValue();

if (value == null)
    return null;
return new BigDecimal(String.valueOf(value));

String string = bigDecimal.stripTrailingZeros().toPlainString();
int index = string.indexOf(".");
return index < 0 ? 0 : string.length() - index - 1;

String[] paramArr = paramMap.get(paramName);
if (paramArr == null || paramArr.length == 0)
    return null;
try {
    return new BigDecimal(paramArr[0]);
} catch (Exception e) {
    return null;

if (denominator == null || numerator == null || denominator.compareTo(BigDecimal.ZERO) == 0) {
    return BigDecimal.ZERO;
return numerator.divide(denominator, 4, BigDecimal.ROUND_HALF_EVEN).multiply(HUNDRED).setScale(2,
        BigDecimal.ROUND_HALF_EVEN);