1 /* 2 * Person functionality 3 */ 4 5 package people; 6 7 public interface PersonSpecification { 8 9 public String firstName(); 10 public String lastName(); 11 public int month(); 12 public int day(); 13 public int years(); 14 public String initials(); 15 public boolean isBoomer(); 16 } 17 18 19 20 21