1    package people;
2    
3    public interface PersonSpecification {
4        String getfirstName();
5    
6        String getlastName();
7    
8        public String firstName();
9        public String lastName();
10       public int month();
11       public int day();
12       public int year();
13       public String initials();
14       public boolean isBoomer();
15   }
16