// Exercise 3.1.3

class Author {
  String name;
  int dob;
  
  Author(String name, int dob) {
    this.name = name;
    this.dob = dob;
  }  
}


class Book { 
  String title;
  Author author;
  double price;
  int year;
  
  Book(String title, Author author, double price, int year) {
    this.title = title;
    this.author = author;
    this.price = price;
    this.year = year;
  }
}

/*
class Test{

  Author StEx = new Author("StEx", 1918);
  Author FFFK = new Author("FFFK", 1958);
  
  Book b1 = new Book("LPP", StEx, 15.50, 1943);
  Book b2 = new Book("LTdH", StEx, 10.20, 1940);
  Book b3 = new Book("HtDP", FFFK, 50.00, 2001);
  
  Book b4 = new Book("Robinson Crusoe", 
  				  new Author("Daniel Defoe", 1750), 15.50, 1790);
  Book b5 = new Book("Heart of Darkness", 
                  new Author("Joseph Conrad", 1878), 12.80, 1902);
  Book b6 = new Book("Beach Music", 
                  new Author("Pat Conroy", 1955), 9.50, 1996);  
}
*/