Notes on the Time1 Class Declaration
Consider several issues of class design with respect to class Time1. The instance variables hour, minute and second are each declared private. The actual data representation used within the class is of no concern to the class’s clients. For example, it would be perfectly reasonable for Time1 to represent the time internally as the number of seconds since midnight or the number of minutes and seconds since midnight. Clients could use the same public methods and get the same results without being aware of this.
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