判斷當前日期是否在[startDate, endDate]區間

    /**
     * 判斷當前日期是否在[startDate, endDate]區間
     * 
     * @param startDate 開始日期
     * @param endDate 結束日期
     * @author jqlin
     * @return
     */
    public static boolean isEffectiveDate(Date startDate, Date endDate){
        if(startDate == null || endDate == null){
            return false;
        }
        
        long currentTime = new Date().getTime();
        if(currentTime >= startDate.getTime() 
                && currentTime <= endDate.getTime()){
            return true;
        }
        
        return false;
    }