Java How to Program, Early Objects, 11th Edition

... otherwise, it appears as a value from 1 to 11. The conditional operator in line 33 determines whether AM or PM will be returned as part of the String.

Recall that all objects in Java have a toString method that returns a String representation of the object. We chose to return a String containing the time in standard-time format. Method toString is called implicitly whenever a Time1 object appears in the code where a String is needed, such as the value to output with a %s format specifier in a call to System.out.printf. You may also call toString explicitly to obtain a String representation of a Time object.

Using Class Time1

Class Time1Test (Fig. 8.2) uses class Time1. Line 7 declares the Time1 variable time and initializes it with a new Time1 object. ...