// Jim Herrero
public class Person implements Comparable<Person>
{
  private String firstname;
  private String lastname;
  public Person(String f, String l)
  {
    firstname = f;
    lastname = l;
  }
  public int compareTo(Person other)
  {
    int a = lastname.compareTo(other.lastname);
    if(a != 0)
      return a;
    else
      return firstname.compareTo(other.firstname);
  }
  public String toString()
  {
    return firstname + " " + lastname;
  }
}