jdv_article_2

gistfile1.java

public class Person
{
  private  String firstName;
  private  String lastName;
  
  String getFirstName() { return firstName; }
  void setFirstName(String firstName) { this.firstName = firstName; }
  
  String getLastName() { return  lastName; }
  void setLastName(String lastName) { this.lastName = lastName; }
  
  int hashCode() ....
  
  boolean equals(Object o) { ....  }
  
  
}