Returning to the calendar example, the last bit of the implementation is the AppointmentCalendar class, which appears in Listing 5.

返回到日历示例中，最后实现的是appointmentcalendar类，如清单5所示。

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This class supports changing the date by different settings via constants in the Calendar class; for example, Calendar.WEEK_OF_MONTH to change the date one week at a time.

该类支持通过将 Calendar 类中的常数设置为不同的值来更改日期；例如， Calendar.WEEK_OF_MONTH 每次将日期更改一周。

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Listing 7 demonstrates code to get a new instance of the Calendar class, obtain the hour of the day (which is returned in a 24-hour format), and then put together a simple greeting based on that hour.

清单7给出了获得calendar类新实例的代码，从而得到一天中的具体时间(以24小时的格式返回)，然后根据这个时间组合出一条简单的欢迎词。

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At the end of each calendar year, the investor shifted funds from the better-performing asset class to the worst-performing asset class.

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Committing to someone or a class gives you a fixed time to exercise and you put it on your calendar.

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