Question

Create classes to implement the following inheritance hierarchy:
Book
TextBook E-Book

All books have a title, an ISBN number, a cost and a size (i.e., number of pages). Textbooks
also have an area designation (such as ComputerScience or Anthropology) and a student
discount percentage. E-books contain a platform designation (such as Kindle or Nook). You
need only list the elds and a constructor for each class.

Answer 1

// Book class

public abstract class Book {

private String title;

private int ISBN;

private double cost;

private int size;

public String getTitle() {

return title;

}

public void setTitle(String title) {

this.title = title;

}

public int getISBN() {

return ISBN;

}

public void setISBN(int iSBN) {

ISBN = iSBN;

}

public double getCost() {

return cost;

}

public void setCost(double cost) {

this.cost = cost;

}

public int getSize() {

return size;

}

public void setSize(int size) {

this.size = size;

}

public Book(){

this.cost = 0;

this.ISBN = 0;

this.size = 0;

this.title = " ";

}

public Book(double cost, int size, int isbn, String title) {

this.title = title;

this.cost = cost;

this.ISBN = isbn;

this.size = size;

}

}

//TextBook Class

public class TextBook extends Book{

private String Designation;

private double dispercent;

public double getDispercent() {

return dispercent;

}

public void setDispercent(double dispercent) {

this.dispercent = dispercent;

}

public TextBook() {

super();

this.Designation = "";

this.dispercent = 0;

}

public TextBook(double dis, String desig, double cost, int isbn, int size, String title) {

super(cost, size, isbn, title);

this.Designation = desig;

this.dispercent = dis;

}

public String getDesignation() {

return Designation;

}

public void setDesignation(String designation) {

Designation = designation;

}

}

//Ebook Class

public class Ebook extends Book {

private String platformDesig;

public Ebook() {

super();

this.platformDesig = "";

}

public Ebook(String plat, double cost, int size, int isbn, String title) {

super(cost, size, isbn, title);

this.platformDesig = plat;

}

public String getPlatformDesig() {

return platformDesig;

}

public void setPlatformDesig(String platformDesig) {

this.platformDesig = platformDesig;

}

}