Deprecated: The method setScale(int, RoundingMode) should be used in preference to this legacy method.

Returns a BigDecimal whose scale is the specified value, and whose unscaled value is determined by multiplying or dividing this BigDecimal's unscaled value by the appropriate power of ten to maintain its overall value. If the scale is reduced by the operation, the unscaled value must be divided (rather than multiplied), and the value may be changed; in this case, the specified rounding mode is applied to the division.

Parameters:

newScale		scale of the BigDecimal value to be returned.
roundingMode		The rounding mode to apply.

Returns:  a BigDecimal whose scale is the specified value, and whose unscaled value is determined by multiplying or dividing this BigDecimal's unscaled value by the appropriate power of ten to maintain its overall value.

Exceptions:

ArithmeticException		if roundingMode==ROUND_UNNECESSARY and the specified scaling operation would require rounding.
IllegalArgumentException		if roundingMode does not represent a valid rounding mode.

See also:
ROUND_UP, ROUND_DOWN, ROUND_CEILING, ROUND_FLOOR, ROUND_HALF_UP, ROUND_HALF_DOWN, ROUND_HALF_EVEN, ROUND_UNNECESSARY

@apiNote Since BigDecimal objects are immutable, calls of this method do not result in the original object being modified, contrary to the usual convention of having methods named setX mutate field X. Instead, setScale returns an object with the proper scale; the returned object may or may not be newly allocated.