Java 计算比分比

/**
     *
     * 功能描述: 两个数计算百分比
     *
     * @param: molecular 分子
     * @param: denominator 分母
     * @return:
     * @auther: Destiny
     * @date: 2021/8/27 上午9:37
     */
    public static String getPercentage(double molecular,double denominator, Integer scale){
        String result;
        if(molecular == 0 || denominator == 0){
            result = "0";
        }else {
            NumberFormat numberFormat = NumberFormat.getNumberInstance();
            numberFormat.setMaximumFractionDigits(scale);
            result = numberFormat.format((molecular/denominator * 100));
        }
        return result;
    }

    /**
     *
     * 功能描述: 两个数计算百分比
     *
     * @param: molecular 分子
     * @param: denominator 分母
     * @return:
     * @auther: Destiny
     * @date: 2021/8/27 上午9:37
     */
    public static String getPercentage1(double molecular, double denominator, Integer scale) {
        if(denominator == 0){
            return "0";
        }
        BigDecimal b1 = new BigDecimal(Double.toString(molecular * 100));
        BigDecimal b2 = new BigDecimal(Double.toString(denominator));
        double percentage = b1.divide(b2, scale, BigDecimal.ROUND_HALF_UP ).doubleValue();
        String result = Double.toString(percentage);

        return result;
    }