code: public static String getChinaDate(int day) {
          String a = "";
          if (day == 10)
              return "初十";
          if (day == 20)
              return "二十";
          if (day == 30)
              return "三十";
          int two = (day) / 10;
          if (two == 0)
              a = "初";
          if (two == 1)
              a = "十";
          if (two == 2)
              a = "廿";
          int one = day % 10;
          switch (one) {
              case 1:
                  a += "一";
                  break;
              case 2:
                  a += "二";
                  break;
              case 3:
                  a += "三";
                  break;
              case 4:
                  a += "四";
                  break;
              case 5:
                  a += "五";
                  break;
              case 6:
                  a += "六";
                  break;
              case 7:
                  a += "七";
                  break;
              case 8:
                  a += "八";
                  break;
              case 9:
                  a += "九";
                  break;
          }
          return a;
      }
docs: 获取指定农历日的中国常用叫法（例如入1，返回初一）
  
  @param day 农历的日
  @return 农历的日的常用叫法