public static void main(String[] args) {        System.out.println(getPercent(1, 2));    }    public static String getPercent(double x, double total) {        DecimalFormat df = new DecimalFormat("0.00%");// ##.00% 百分比格式，后面不足2位的用0补齐        double result = x / total;        return df.format(result);    }    public static String getPercent(int x, int total) {        String result = "";// 接受百分比的值        double x_double = x * 1.0;        double tempresult = x_double / total;        System.out.println(tempresult);        NumberFormat nf = NumberFormat.getPercentInstance();        nf.setMinimumFractionDigits(3); // 保留到小数点后几位        return nf.format(tempresult);    }