Question on
compareTo(): As be.arci.math.BigDecimal is a floating point, with
rounding too, exact comparison might not be what you need in all cases. Tell
me what you think of a method like compareWithinMargin(BigDecimal bdComparand, double
percents),
which could return 0 ('equal
value') if this * (1-percents) < bdComparand
< this * (1+percents),
else +1 or -1
depending on this < or > bdComparand