Android How to Program, 3/e

F.2 Time Class Case Study

Our first example consists of two classes—Time1 (Fig. F.1) and Time1Test (Fig. F.2). Class Time1 represents the time of day. Class Time1Test is an application class in which the main method creates one object of class Time1 and invokes its methods. These classes must be declared in separate files because they’re both public classes. The output of this program appears in Fig. F.2.

Fig. F.1 Time1 class declaration maintains the time in 24-hour format

Figure F.1 Full Alternative Text

Fig. F.2 Time1 object used in an application

Figure F.2 Full Alternative Text

Time1 Class Declaration

Class Time1’s private int instance ...