What is random double?

The doubles() method of Random class returns a stream of pseudorandom double values, each conforming between zero and one . The second syntax effectively returns an unlimited stream of pseudorandom double values, each conforming to the given randomNumberOrigin and randomNumberBound.

Read more

How do you round precision?

The easiest way to control rounding, and achieve a desired decimal precision, is to multiply an expression by 1, followed by the number of decimal places of precision that you want in the result . For example, multiply by 1.0000 to ensure that a result is accurate to four decimal places.

Read more