SimpleDateFormat myFormatter = new SimpleDateFormat("yyyy-MM-dd");
		java.util.Date date1 = myFormatter.parse("1991-06-01");
		java.util.Date date2 = myFormatter.parse("2012-09-24");
		long day = (date2.getTime() - date1.getTime()) / (24 * 60 * 60 * 1000);

		System.out.println("眨眼间已经活了" + day + "天了！");