Java 中判断今年是一年中的第几天，第几个月，今天是星期几？
LocalDate now = LocalDate.now();
System.out.println("year:"+now.getDayOfYear());
System.out.println("month:"+now.getDayOfMonth());
System.out.println("week:"+now.getDayOfWeek());
LocalDate now = LocalDate.now();
System.out.println("year:"+now.getDayOfYear());
System.out.println("month:"+now.getDayOfMonth());
System.out.println("week:"+now.getDayOfWeek());