For example, the (float) cast in float circumference = (float) 3.14159 * 10 * 10; is necessary to convert from double precision floating-point to floating-point.

Java does automatic type-casting when a math operator has operands of 2 different data-types, it will convert a smaller data-type to a larger data-type, for example int -> float, so the operator can ...

Java double precision. The precision of a double in Java is 10-324 decimal places, although true mathematical precision can suffer due to issues with binary arithmetic. To simplify display, you can ...