java——推断日期是否在今天之前

java.util.Date nowdate = new java.util.Date();
					String date = DateUtils.formatDate(nowdate, "yyyy-MM-dd");
					SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd",
							Locale.CHINA);
					Date d;
					try {
						d = sdf.parse(dateFormat);
						int flag = d.compareTo(DateUtils
								.formatDateFromeString(date));
						if (flag >= 0) {//当天及当天之后，<0就是在日期之前
							
						}
					} catch (ParseException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					}