将科学记数法字符串转换为BigDecimal

import java.math.BigDecimal;

public class ScientificNotationConverter {
    public static BigDecimal convertToBigDecimal(String scientificNotation) {
        String[] parts = scientificNotation.toLowerCase().split("e");
        BigDecimal mantissa = new BigDecimal(parts[0]);
        int exponent = Integer.parseInt(parts[1]);

        BigDecimal result = mantissa.multiply(BigDecimal.TEN.pow(exponent));
        return result;
    }

    public static void main(String[] args) {
        String scientificNotation = "1.23e+5";
        BigDecimal convertedValue = convertToBigDecimal(scientificNotation);
        System.out.println("Converted value: " + convertedValue);
    }
}