//Exercise 7.2
public class Book {
	//variables
	private String name;
	private Author author;
	
	//constructor
	public Book (String name , Author author){
		this.name = name;
		this.author = author;
	}
	//getter and setter
	public String getName(){
		return name;
	}
	public Author getAuthor(){
		return author;
	}
	public String getAuthorName(){
		return getAuthor().getName();
	}
	//toString
	public String toString(){
		return "The book is "+ name + " of "+ author;
	}
	
}