Designing and Creating Objects

Now we can begin to see the power of objects. I could extend the program:

public class BookTracker {

   public static void main(String[] args) {

     Book firstBook = new Book("Horton Hears A Who!","Dr. Seuss","Random House");
     Book secondBook = new Book("The Cat In The Hat","Dr. Seuss","Random House");
     Book anotherBook = new Book("The Maltese Falcon","Dashiell Hammett","Orion");
     firstBook.displayBookData();
     anotherBook.displayBookData();
     secondBook.displayBookData();
   }
}

From writing one class definition we now have the ability to create as many Book objects as we please!

• Introduction
• The Class Declaration
• Fields
• The Constructor Method
• Adding Methods
• Creating an Instance of an Object
• Multiple Objects