Objects of each Class

By using hierarchical organization and inheritance it is easy to add many more card classes and to create a well organized program. This was unthinkable not too many years ago. Here is a sample run of this program:

Your name:
Sue
Dear Sue,

Season's Greetings!

Dear Sue,

Happy 21th Birthday

Dear Sue,

Love and Kisses,

XXXXXXX

When the main() method has constructed its three objects, the situation is as in the picture. There are three classes that can be instantiated, and one object of each class has been instantiated. Of course, as many objects as you need of each type (except Card) can be instantiated.