java 获取指定范围随机数

java  获取指定范围随机数

public  Double nextDouble(double min,  double max) throws Exception {
        if (max < min) {
            throw new BusinessException(CodeMsg.create(40001,"min > max"));
        }
        if (min == max) {
            return min;
        }
        Double v = min + ((max - min) * new Random().nextDouble());
        String format = String.format("%.5f", v);
        return Double.parseDouble(format);
    }