java 获取最近7天 最近今天的日期

private static  Date getDateAdd(int days){
    SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd");
    Calendar c = 域名nstance();
    域名(域名OF_MONTH, -days);
   return 域名ime();
}
private static  List<String> getDaysBetwwen(int days){ //最近几天日期
    List<String> dayss = new ArrayList<>();
    Calendar start = 域名nstance();
    域名ime(getDateAdd(days));
    Long startTIme = 域名imeInMillis();
    Calendar end = 域名nstance();
    域名ime(new Date());
    Long endTime = 域名imeInMillis();
    Long oneDay = 1000 * 60 * 60 * 24l;
    Long time = startTIme;
    while (time <= endTime) {
        Date d = new Date(time);
        DateFormat df = new SimpleDateFormat("yyyy-MM-dd");
        域名tln(域名at(d));
        域名(域名at(d));
        time += oneDay;
    }
    return dayss;
}