java判断日期是今天 java判断日期是否是今天

SimpleDateFormat format=new SimpleDateFormat("yyyy-MM-dd");
 Date d1=format.parse(FHavetime);
 Date nowdate=new Date();
 Date d2=format.parse(format.format(nowdate));
 DcSiteMessagemodel dcyuyue=dcSiteMessageMng.getByid(3);
 DcSiteMessagemodel dcwaimai=dcSiteMessageMng.getByid(4);
 long day=(d2.getTime()-d1.getTime())/(24*60*60*1000);
 if(day==0){
 timeString="今天"+hour+"点"+minute1+"就餐";
 }else{
 timeString=days+"日"+hour+"点"+minute1+"就餐";
 }