元轉分和分轉元的java實現

 

  /**
     * 元轉分，確保price保留兩位有效數字
     * @return
     */
    public static int changeY2F(double price) {
        DecimalFormat df = new DecimalFormat("#.00");
        price = Double.valueOf(df.format(price));
        int money = (int)(price * 100);
        return money;
    }
    
    /**
     * 分轉元，轉換為bigDecimal在toString
     * @return
     */
    public static String changeF2Y(int price) {
        return BigDecimal.valueOf(Long.valueOf(price)).divide(new BigDecimal(100)).toString();
    }