Java Utililty Methods BigDecimal

if (validator == null)
    validator = value -> true;
String answer;
BigDecimal value;
do {
    answer = readLine(console);
    try {
        value = stripAndOrRescale(new BigDecimal(answer));
...

if (value.compareTo(DISPLAY_MAX) > 0) {
    return "very high";
int unitIndex = 0;
for (; unitIndex < UNIT.length && value.compareTo(THOUSAND) > 0; unitIndex++) {
    value = value.divide(THOUSAND);
if (unitIndex == 0) {
...

return b.abs().subtract(b.abs().setScale(0, BigDecimal.ROUND_FLOOR).abs()).abs();

if (value == null) {
    return value;
BigDecimal fractionalPart = value.subtract(value.setScale(0, RoundingMode.FLOOR));
return (fractionalPart.compareTo(BigDecimal.ZERO) != 0) ? fractionalPart : null;

return step.multiply(new BigDecimal(RANDOM.nextInt(total.intValue())));

BigInteger intVal = val.unscaledValue();
intVal = intVal.abs();
String bak = intVal.toString();
return bak.length();

if (b == null) {
    return 0;
return b.intValue();

int signum = v.signum();
if (signum == 0) { 
    return 1;
return (signum < 0 ? 2 : 1) + (v.precision() + 1 + (v.scale() % 2 == 0 ? 0 : 1)) / 2;

BigDecimal lat_jp = getLetJp(nl);
BigDecimal lon_jp = getLonJp(el);
return lat_jp.subtract(lat_jp.multiply(new BigDecimal(0.00010695)))
        .add(lon_jp.multiply(new BigDecimal(0.000017464))).add(new BigDecimal(0.0046017))
        .setScale(7, BigDecimal.ROUND_HALF_UP);

return nl.divide(new BigDecimal(3600000), 7, BigDecimal.ROUND_HALF_UP);