Android™ How to Program, Second Edition

Using Class Time1

As you learned in Appendix B, each class you declare represents a new type in Java. Therefore, after declaring class Time1, we can use it as a type in declarations such as

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Time1 sunset; // sunset can hold a reference to a Time1 object

The Time1Test application class (Fig. F.2) uses class Time1. Line 9 declares and creates a Time1 object and assigns it to local variable time. Operator new implicitly invokes class Time1’s default constructor, since Time1 does not declare any constructors. Lines 12–16 output the time first in universal-time format (by invoking time’s toUniversalString method in line 13), then in standard-time format (by explicitly invoking time’s toString method in line 15) to confirm ...