//  Person.java
//
//


public class Person {
// Constant
private static final int MaxChildren = 20;
// Fields
    private String firstName, lastName;
    private Sexes sex;
    private Person father;
    private Person mother;
    private int numChildren = 0;
    private Person[] children;

// Constructor
    public Person(String f, String l, Sexes s) {
        firstName = f;
        lastName = l;
        sex = s; 
        numChildren = 0;
        children = new Person[MaxChildren];
      }

// Methods
     public String getFirstName() { return firstName; }
     public String getLastName() { return lastName; }
     public Person getFather() { return father;}
     public Person getMother() { return mother;}
     public Person[] getChildren() { return children;}
     public int getNumChildren() { return numChildren;}
     public Sexes getSex() { return sex;}

     public String toString() { 
          return "< Person " + firstName + " " + lastName + ">";
         }

// Setter. When you call setParent(P), P gets marked as the appropriate
// parent of this, and this gets added as a child of P.

     public void setParent(Person P) {
         if (P.numChildren < MaxChildren) {  
// Note that if P has already has MaxChildren, then nothing happens 
             P.children[P.numChildren] = this;
             P.numChildren = P.numChildren + 1;
             if (P.sex == Sexes.Male)
                father = P;
               else mother = P; 
           }
      } // end SetParent
} // end Person