Calendar的使用

根据传入的date，取得上一周的周一、周五日期
java 代码

SimpleDateFormat _formatYMD = new SimpleDateFormat("yyyyMMdd");            Calendar _calendar = Calendar.getInstance();            try{                _calendar.setTime(_formatYMD.parse(date));                                int x = _calendar.get(Calendar.DAY_OF_WEEK) + 5;                                _calendar.add(Calendar.DAY_OF_YEAR,-x);                startDate = _formatYMD.format(_calendar.getTime());                                _calendar.add(Calendar.DAY_OF_YEAR,4);                endDate = _formatYMD.format(_calendar.getTime());            }catch(ParseException e){                e.printStackTrace();            }