How can I lower the scale as much as possible?

Question

Using BigDecimal, how can I convert 2.00 to 2, 1.1230 to 1.123 etc?

How can I get 0 from 2.00, 1 from 1.10000 or 3 from 0.123? (lowest scale that don't change the value)

Answer 1

For the first part, BigDecimal.stripTrailingZeros()

I'm not at all sure what you mean about the second part, though. Do you want the last digit, or something?