比较前台传来时间与当前系统时间,谁早谁迟问题

比较前台传来时间与当前系统时间,谁早谁迟问题

         String da  =   " 2008-04-23 " ;
         
         Calendar befor  =  Calendar.getInstance();
         Calendar rightNow  =  Calendar.getInstance();
         
         SimpleDateFormat formats  =   new  SimpleDateFormat( " yyyy-MM-dd " );
         String now  =  formats.format(rightNow.getTime());
         String s  =   null ;
          try   {
           befor.setTime(formats.parse(da));
           s = formats.format(befor.getTime());
         }   catch  (ParseException e)  {
         e.printStackTrace();
         }
         
         System.out.println(rightNow.getTime().before(befor.getTime()));
         System.out.println(now);
         System.out.println(s);

这段代码就模拟实现了将前台传来的日期和当前日期经行比较,看其是否比当前日期还超前,要是超前则返回为ture,反之返回false!