Use BigDecimal (fixed-point) for decimal operations in Java to avoid floating-point numbers such as float

In Java to use BigDecimal (fixed-point number) for the related operation of decimals, avoid using float, such as float, float, double, such as floating-point storage and operation (such as: Add, subtract ...) ) There is an error (7.22f-7.0f = 0.21999979 instead of 0.22).

The following is an example of BigDecimal subtraction:

/** * Exact subtraction */public static double subtract (double v1, double v2) {BigDecimal D1 = new BigDecimal (double.tostring (v1)); BigDecimal D2 = new BigDecimal (double.tostring (v2)); return D1.subtract (D2). Doublevalue (); Subtract (7.22d, 7.0d) = = 0.22

BigDecimal provide add, divide, subtract and other related to add, subtract, multiply, divide, modulo and other operations.

Use BigDecimal (fixed-point) for decimal operations in Java to avoid floating-point numbers such as float