My grid is asking about my school start date

It is very convenient to use the new data api in Java 8

 //开学日期
  LocalDate start = LocalDate.of(2015,9,7);
  WeekFields week = WeekFields.of(Locale.getDefault());
  int startWeek = start.get(week.weekOfWeekBasedYear());

  LocalDate today = LocalDate.now();
  WeekFields weekFields = WeekFields.of(Locale.getDefault());
  int todayWeek = today.get(weekFields.weekOfWeekBasedYear());

  int weeks = todayWeek-startWeek+1;
   System.out.println("当前是第"+weeks+"周");
        

Just finished writing this function. Users need to give an initial week when using this software for the first time, and then add weeks through logic

Just get the current date each time and compare it with the initial date