How to use

formatBigInteger

method

in

libcore.icu.NativeDecimalFormat

@Override
public final StringBuffer format(Object number, StringBuffer buffer, FieldPosition position) {
  checkBufferAndFieldPosition(buffer, position);
  if (number instanceof BigInteger) {
    BigInteger bigInteger = (BigInteger) number;
    char[] chars = (bigInteger.bitLength() < 64)
        ? ndf.formatLong(bigInteger.longValue(), position)
        : ndf.formatBigInteger(bigInteger, position);
    buffer.append(chars);
    return buffer;
  } else if (number instanceof BigDecimal) {
    buffer.append(ndf.formatBigDecimal((BigDecimal) number, position));
    return buffer;
  }
  return super.format(number, buffer, position);
}

@Override
public final StringBuffer format(Object number, StringBuffer buffer, FieldPosition position) {
  checkBufferAndFieldPosition(buffer, position);
  if (number instanceof BigInteger) {
    BigInteger bigInteger = (BigInteger) number;
    char[] chars = (bigInteger.bitLength() < 64)
        ? ndf.formatLong(bigInteger.longValue(), position)
        : ndf.formatBigInteger(bigInteger, position);
    buffer.append(chars);
    return buffer;
  } else if (number instanceof BigDecimal) {
    buffer.append(ndf.formatBigDecimal((BigDecimal) number, position));
    return buffer;
  }
  return super.format(number, buffer, position);
}

@Override
public final StringBuffer format(Object number, StringBuffer buffer, FieldPosition position) {
  checkBufferAndFieldPosition(buffer, position);
  if (number instanceof BigInteger) {
    BigInteger bigInteger = (BigInteger) number;
    char[] chars = (bigInteger.bitLength() < 64)
        ? ndf.formatLong(bigInteger.longValue(), position)
        : ndf.formatBigInteger(bigInteger, position);
    buffer.append(chars);
    return buffer;
  } else if (number instanceof BigDecimal) {
    buffer.append(ndf.formatBigDecimal((BigDecimal) number, position));
    return buffer;
  }
  return super.format(number, buffer, position);
}

@Override
public final StringBuffer format(Object number, StringBuffer buffer, FieldPosition position) {
  checkBufferAndFieldPosition(buffer, position);
  if (number instanceof BigInteger) {
    BigInteger bigInteger = (BigInteger) number;
    char[] chars = (bigInteger.bitLength() < 64)
        ? ndf.formatLong(bigInteger.longValue(), position)
        : ndf.formatBigInteger(bigInteger, position);
    buffer.append(chars);
    return buffer;
  } else if (number instanceof BigDecimal) {
    buffer.append(ndf.formatBigDecimal((BigDecimal) number, position));
    return buffer;
  }
  return super.format(number, buffer, position);
}

@Override
public final StringBuffer format(Object number, StringBuffer buffer, FieldPosition position) {
  checkBufferAndFieldPosition(buffer, position);
  if (number instanceof BigInteger) {
    BigInteger bigInteger = (BigInteger) number;
    char[] chars = (bigInteger.bitLength() < 64)
        ? ndf.formatLong(bigInteger.longValue(), position)
        : ndf.formatBigInteger(bigInteger, position);
    buffer.append(chars);
    return buffer;
  } else if (number instanceof BigDecimal) {
    buffer.append(ndf.formatBigDecimal((BigDecimal) number, position));
    return buffer;
  }
  return super.format(number, buffer, position);
}

@Override
public final StringBuffer format(Object number, StringBuffer buffer, FieldPosition position) {
  checkBufferAndFieldPosition(buffer, position);
  if (number instanceof BigInteger) {
    BigInteger bigInteger = (BigInteger) number;
    char[] chars = (bigInteger.bitLength() < 64)
        ? ndf.formatLong(bigInteger.longValue(), position)
        : ndf.formatBigInteger(bigInteger, position);
    buffer.append(chars);
    return buffer;
  } else if (number instanceof BigDecimal) {
    buffer.append(ndf.formatBigDecimal((BigDecimal) number, position));
    return buffer;
  }
  return super.format(number, buffer, position);
}

@Override
public final StringBuffer format(Object number, StringBuffer buffer, FieldPosition position) {
  checkBufferAndFieldPosition(buffer, position);
  if (number instanceof BigInteger) {
    BigInteger bigInteger = (BigInteger) number;
    char[] chars = (bigInteger.bitLength() < 64)
        ? ndf.formatLong(bigInteger.longValue(), position)
        : ndf.formatBigInteger(bigInteger, position);
    buffer.append(chars);
    return buffer;
  } else if (number instanceof BigDecimal) {
    buffer.append(ndf.formatBigDecimal((BigDecimal) number, position));
    return buffer;
  }
  return super.format(number, buffer, position);
}