person.java

非常好的java事例以及带源码事例的java2教程

public class Person implements Comparable
{
  // Constructor
  public Person(String firstName, String surname)
  {
    this.firstName = firstName;
    this.surname = surname;
  }

  public String toString()
  {
    return firstName + " " + surname;
  }

  // Compare Person objects
  public int compareTo(Object person)
  {
    int result = surname.compareTo(((Person)person).surname);
    return result == 0 ? firstName.compareTo(((Person)person).firstName):result;
  }

  private String firstName;    // First name of person
  private String surname;      // Second name of person
}