package com.andela.library.model;


public class Book extends Item {

    private String title;
    private String isbnNumber;
    private String author;

    public Book(String title, String author, String isbnNumber, int totalCopies) {
        super(totalCopies);
        this.title = title;
        this. author = author;
        this.isbnNumber = isbnNumber;
    }

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public String getIsbnNumber() {
        return isbnNumber;
    }

    public void setIsbnNumber(String isbnNumber) {
        this.isbnNumber = isbnNumber;
    }

    public String getAuthor() {
        return author;
    }

    public void setAuthor(String author) {
        this.author = author;
    }
}

@@ -300,17 +300,16 @@
    this.
- 
 author =

Refactor Book class