Introduction to Objects - Advanced Topics in Java: Core Concepts in Data Structures - page 35

will be executed as follows:

1. Storage is found for a Book object, and the address of the storage is stored in b.

2. The fields are set as follows:

author is set to "No Author"; // specified in the declaration
title is set to null; // default for (String) object type
price is set to 0.0; // default for numeric type
pages is set to 0; // default for numeric type
binding is set to 'P'; // specified in the declaration
inStock is set to true. // specified in the declaration

3. The constructor is called with arguments "Noel Kalicharan" and "DigitalMath" ; this

sets author to "Noel Kalicharan" and title to "DigitalMath" , leaving the other fields
untouched. When the constructor is finished, the fields will have the following values:

author "Noel Kalicharan"
title "DigitalMath"
price 0.0
pages 0
binding 'P'
inStock true

2.3.1 Overloading a Constructor
Java allows us to have more than one constructor, provided each has a different signature . When several
constructors can have the same name, this is referred to as overloading the constructor. Suppose we want to be able
to use the no-arg constructor as well as the one with author and title arguments. We can include both in the class
declaration like this:

public class Book {
private static double Discount = 0.25;
private static int MinBooks = 5;

private String author = "No Author";
private String title;
private double price;
private int pages;
private char binding = 'P'; // for paperback
private boolean inStock = true;

public Book() { }

public Book(String a, String t) {
author = a;
title = t;
}
} //end class Book