j2ee

1. 读取Properties文件

    ResourceBundle rb = ResourceBundle.getBundle("conf.config");

    String imgHostUrl =rb.getString("imgHostUrl").trim();

2. 判断当前日期是星期几

    /**
     * 判断当前日期是星期几
     *
     * @param pTime
     *            需要判断的时间
     * @return dayForWeek 判断结果
     * @Exception 发生异常
     */
    public static int dayForWeek(String pTime) throws Exception
    {
        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
        Calendar c = Calendar.getInstance();
        c.setTime(format.parse(pTime));
        int dayForWeek = 0;
        if (c.get(Calendar.DAY_OF_WEEK) == 1)
        {
            dayForWeek = 7;
        } else
        {
            dayForWeek = c.get(Calendar.DAY_OF_WEEK) - 1;
        }
        return dayForWeek;
     }

3. 自动生动0-10的随机数

    (new Random()).nextInt(11)