public static void main(String[] args) {
        int i = new BigDecimal(100).multiply(new BigDecimal(0.01)).multiply(new BigDecimal(2)).setScale(0, BigDecimal.ROUND_UP).intValue();
        System.out.println(i);
    }

运行结果：3

        double v = 100 * 0.01 * 2;
        int ceil = (int) Math.ceil(v);
        System.out.println(ceil);

运行结果：2