java中时间的比较

String setStartDate = startYear + “-” + (startMonthOfYear) + “-” + startDayOfMonth;

String setEndDate = endYear + “-” + (endMonthOfYear) + “-” + endDayOfMonth;

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd", Locale.CHINA);
try {
Date startDate = sdf.parse(setStartDate);
Date endDate = sdf.parse(setEndDate);
if(startDate.after(endDate)){
ToastUtil.showMessage("设置时间错误");
return ;
}
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
ToastUtil.showMessage("时间转换异常");
return ;
}