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Question

Create abstract class named Book. Include a String field for the book’s title and a double field for the book’s price. Within the class, include a constructor that requires the book title and add two get methods – one that returns the title and one that returns the price( ). Create two child classes of Book: Fiction and NonFiction Books. Each must include a setPrice( ) method that sets the price for all Fiction Books to $24.99 and for all NonFiction Books to $37.99. Write a constructor for each subclass, and include a call to setPrice( ) within each. Display the type, title, and price for the two classes of book you have coded.Write an application demonstrating that you can create both a Fiction and a NonFiction Book, and display their fields. Save the Book.java, Fiction.java, NonFiction.java and UseBook.java files in particular folder.

Fiction:

Scarlet Letter, Mill on the Floss, The Road Not Taken, A Tale of Two Cities, War and Peace, A Simple Plan, Disclosure, Nancy Drew

NonFiction:

Europe on $5 a Day, Introduction to Java

Answer 1

public abstract class Book {

    private String title;

    double price;

    public Book(String title) {

        this.title = title;

        this.price = 0.0;

    }

    public String getTitle() {

        return title;

    }

    public double getPrice() {

        return price;

    }

    public abstract void setPrice();

}

/////////////////////////////////////

public class Fiction extends Book {

    public Fiction(String title) {

        super(title);

        setPrice();

    }

    

    public void setPrice() {

         price = 24.99;

    }

    void showInfo() {

        System.out.println("Fiction - Title: " + getTitle() + " $"+getPrice());

    }

}

/////////////////////////////////////

public class NonFiction extends Book {

    public NonFiction(String title) {

        super(title);

        setPrice();

    }

    

    public void setPrice() {

         price = 37.99;

    }

    void showInfo() {

        System.out.println("NonFiction - Title: " + getTitle() + " $"+getPrice());

    }

}

/////////////////////////////////////

public class UseBook {

    public static void main(String[] args) {

        Fiction aSimplePlan = new Fiction("A Simple Plan");

        NonFiction javaIntro = new NonFiction("Introduction to Java");

        aSimplePlan.showInfo();

        javaIntro.showInfo();

    }

}

/////////////////////////////////////