public class TryParameterizedMethods {
  public static void main(String[] args) {

    BinaryTree<Person> people = new BinaryTree<>();

    // Create and add some Manager objects
    Manager[] managers = { new Manager("Jane",1), new Manager("Joe",3),
                                                  new Manager("Freda",3)};
    for(Manager manager : managers){
      people.add(manager);
    }

    // Create and add some Person objects
    Person[] persons = {new Person("Will"), new Person("Ann"), new Person("Mary"),
                        new Person("Tina"), new Person("Stan")};
    for(Person person : persons) {
      people.add(person);
    }

    listAll(people.sort());  // List the sorted contents of the tree
  }

  // Parameterized method to list the elements in any linked list
  public static <T> void listAll(LinkedList<T> list) {
    for(T obj : list) {
      System.out.println(obj);
    }
  }
}