Calendar类

Calendar 类分析：

1 　　　　 Calendar calendar = Calendar.getInstance();
2         System.out.println(calendar.getTime());
3         SimpleDateFormat simpleDateFormat = new SimpleDateFormat("MM-dd-yyyy");
4         Date date = calendar.getTime();
5         System.out.println(simpleDateFormat.format(date));
6         System.out.println(calendar.get(Calendar.YEAR));