Person.java

public abstract class Person {
 private String firstName;
 private String lastName;
 private int yearOfBirth;

 public Person (String firstName, String lastName, int yearOfBirth) {
 this.firstName = firstName;
 this.lastName = lastName;
 this.yearOfBirth = yearOfBirth;
 }

 public String getFirstName() {
 return firstName;
 }

 public String getLastName() {
 return lastName;
 }

 public int getYearOfBirth() {
 return yearOfBirth;
 }

 @Override
 public String toString() {
 return "Name: " + firstName + " " + lastName + " Birth Year: " + yearOfBirth; 
 }

}