Conversion to and from BigDecimal

import java.math.BigDecimal;

public class BigDecimalConversion {

    public static void main(String[] args) {
        
        // Convert String to BigDecimal
        String strValue = "12345.6789";
        BigDecimal bdFromString = new BigDecimal(strValue);
        System.out.println("BigDecimal from String: " + bdFromString);

        // Convert double to BigDecimal (use String constructor to avoid precision issues)
        double doubleValue = 12345.6789;
        BigDecimal bdFromDouble = new BigDecimal(Double.toString(doubleValue));
        System.out.println("BigDecimal from double: " + bdFromDouble);

        // Convert int to BigDecimal
        int intValue = 1000;
        BigDecimal bdFromInt = BigDecimal.valueOf(intValue);
        System.out.println("BigDecimal from int: " + bdFromInt);

        // Convert long to BigDecimal
        long longValue = 123456789L;
        BigDecimal bdFromLong = BigDecimal.valueOf(longValue);
        System.out.println("BigDecimal from long: " + bdFromLong);

        // Example: Basic arithmetic with BigDecimal
        BigDecimal sum = bdFromString.add(bdFromInt);
        System.out.println("Sum (String + int): " + sum);

        BigDecimal product = bdFromDouble.multiply(bdFromLong);
        System.out.println("Product (double * long): " + product);
    }
}