BigDecimal, division method and Rounding

Question

I want guys to check out my observation of the BigDecimal and comment on which is really the best way of working around with the class instead of using double or float. The particular emphasis is on BigDecimal division method.
I posted a test class to drive my point
import java.math.BigDecimal;
import java.math.MathContext;
* @author m-enudi
public class BigDecimalDivideTest {
    public static void main(String[] args) {
        BigDecimal first = new BigDecimal(10f);
        BigDecimal second = new BigDecimal(1000f);
        BigDecimal result1 = first.divide(second, BigDecimal.ROUND_CEILING);
        BigDecimal result2 = first.divide(second, BigDecimal.ROUND_DOWN);
        BigDecimal result3 = first.divide(second, BigDecimal.ROUND_FLOOR);
        BigDecimal result4 = first.divide(second, BigDecimal.ROUND_HALF_DOWN);
        BigDecimal result5 = first.divide(second, BigDecimal.ROUND_HALF_EVEN);
        BigDecimal result6 = first.divide(second, BigDecimal.ROUND_HALF_UP);
        BigDecimal result7 = first.divide(second, BigDecimal.ROUND_UP);
        BigDecimal result8 = new BigDecimal(first.doubleValue() / second.doubleValue());
        BigDecimal result9 = first.divide(second, MathContext.DECIMAL128);
        System.out.println(" >>>>>>>>>>>>>>>>>>>>>>> " + result1);
        System.out.println(" >>>>>>>>>>>>>>>>>>>>>>> " + result2);
        System.out.println(" >>>>>>>>>>>>>>>>>>>>>>> " + result3);
        System.out.println(" >>>>>>>>>>>>>>>>>>>>>>> " + result4);
        System.out.println(" >>>>>>>>>>>>>>>>>>>>>>> " + result5);
        System.out.println(" >>>>>>>>>>>>>>>>>>>>>>> " + result6);
        System.out.println(" >>>>>>>>>>>>>>>>>>>>>>> " + result7);
        System.out.println(" >>>>>>>>>>>>>>>>>>>>>>> " + result8);
        System.out.println(" >>>>>>>>>>>>>>>>>>>>>>> " + result9);
        System.out.println(" >>>>>>>>>>>>>>>>>>>>>>> " + (first.doubleValue() / second.doubleValue()));
}Try working with test samples like
first = 129.0494
second = 39484.111
I did not try to use the BigDecimal.ROUND_UNNECCESSARY because it always caused the ArithmeticException.
can you guys comment on the best way of doing division with the BigDecimal class.
For now I seem comfortable with using the MathContext approach, though not in anyway an authority in the use of the class.
Regards

Answer 1

This result changed significantly with a change in code as listed below:
        BigDecimal result1 = first.divide(second, 2, BigDecimal.ROUND_CEILING);
        BigDecimal result2 = first.divide(second, 2,  BigDecimal.ROUND_DOWN);
        BigDecimal result3 = first.divide(second, BigDecimal.ROUND_FLOOR);
        BigDecimal result4 = first.divide(second, BigDecimal.ROUND_HALF_DOWN);
        BigDecimal result5 = first.divide(second, 2,  BigDecimal.ROUND_HALF_EVEN);
        BigDecimal result6 = first.divide(second, 2,  BigDecimal.ROUND_HALF_UP);
        BigDecimal result7 = first.divide(second, 2,  BigDecimal.ROUND_UP);
        BigDecimal result8 = new BigDecimal(first.doubleValue() / second.doubleValue());
        BigDecimal result9 = first.divide(second, MathContext.DECIMAL128);