Rounding necessary with BigDecimal numbers

Question

I want to set scale of two BigDecimal numbers a and b . as in this example :

BigDecimal a = new BigDecimal(\"2.6E-1095\");
        BigD         


        

Answer 1

Try to use roudingMode of setScale method.

Some thing like:

BigDecimal aa = a.setScale(i+j, BigDecimal.ROUND_HALF_DOWN);