Question

Consider the following incomplete declaration of a Book class for 1a-1c.

public class Book

{

   private String title, author, edition;

   private int numPages;

   public Book { //part (a) } //default

   public Book(String t, String a, String e, int np) { //part (b) }

   public String getTitle() {…} //returns the title of this Book

   public String getAuthor() {…} //returns the author of this Book

   public String getEdition() {…} //returns the edition of this Book

   public int getNumPages() {…} //returns numPages of this Book

   public void printBookInfo() {

System.out.print(title + “ written by “ + author);

   }

}

1a) Write the default constructor for the Book class. Our default book will have the following values:

title: Surviving CSC330 in Times of Crisis

author: Richard Weir

edition: 1

numPages = 100

1b) Write the parameterized constructor for the Book class. All instance variables need to be assigned values.

1c) Declare an instance of the Book class called myBook. myBook can have any values you would like (that are appropriate!).

Answer 1

Program Code Screenshot

Sample Output

Program Code to Copy

class Book {
    private String title, author, edition;
    private int numPages;
    public Book()
    {
        title = "Surviving CSC330 in Times of Crisis";
        author = "Richard Weir";
        edition = "1";
        numPages = 100;
    } //default

    public Book(String t, String a, String e, int np) {
        this.title = t;
        this.author = a;
        this.edition = e;
        this.numPages = np;
    }

    public String getTitle() {
        return title;
    } //returns the title of this Book

    public String getAuthor() {
        return author;
    } //returns the author of this Book

    public String getEdition() {
        return edition;
    } //returns the edition of this Book

    public int getNumPages() {
        return numPages;
    } //returns numPages of this Book

    public void printBookInfo() {
        System.out.print(title + " written by " + author);
    }
}

class Main{
    public static void main(String[] args) {
        Book book = new Book("Harry Potter","J K Rowling","5",1298);
        book.printBookInfo();
    }
}