/* Tuesday am lecture - Part 2:

+---------------+
| Book2         |
+---------------+
| String title  |
| Author author |---------+
| int no        |         |
+---------------+         v
                   +-------------+
                   | Author      |
                   +-------------+
                   | String name |
                   | int year    |
                   +-------------+
*/
// to represent a book in a library
class Book2{
  String title;
  Author author;
  int cnum;

  Book2(String title, Author author, int cnum){
    this.title = title;
    this.author = author; 
    this.cnum = cnum;
  }
}

// to represent an author of a book
class Author{
  String name;
  int age;

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

// client class for Book and Author classes
class Examples{
  Examples(){}

  Author lc = new Author("Lewis Carroll", 1832);
  Author drs = new Author("Dr Seuss", 1915);

  Book2 alice = new Book2("Alice", this.lc, 234);
  Book2 glass = new Book2("TTLG", this.lc, 345);
  Book2 cathat = new Book2("Cat in a Hat",this.drs, 777);

}