import java.util.*;

/**
 * Person - A Person within the family tree
 * @author David Smith
 **/
public class Person {
  
  //////////////////////Instance variables/fields/attributes///////////////////////////
  
  /**the unique ID**/
  private String ID;
  /**the name**/
  private String name;
  /**the date of birth**/
  private int dob;
  /**the date of death**/
  private int dod;
  /**the unique ID of the spouse**/
  private String spouse;
  /**the title**/
  private String title;
  /**the LinkedList of children**/
  private LinkedList<String> children;
  
  //////////////////////////////////Constructors///////////////////////////////////////
  
  /**
   * Constructor
   * @param ID the unique ID
   * @param name the name
   * @param dob the date of birth
   * @param dod the date of death
   * @param spouse the ID of the spouse
   * @param title the royal title of the person
   **/
  public Person(String ID, String name, int dob, int dod, String spouse, String title) {
    this.ID = ID;
    this.name = name;
    this.dob = dob;
    this.dod = dod;
    this.spouse = spouse;
    this.title = title;
    children = new LinkedList<String>();
  }
  
  ////////////////////////////////Accessors/Getters/////////////////////////////////////
  
  /**
   * Retrieves the ID
   * @return the ID
   **/
  public String getID() { return ID; }
  
  /**
   * Retrieves the name
   * @return the name
   **/
  public String getName() { return name; }
  
  /**
   * Retrieves the date of birth
   * @return the date of birth
   **/
  public int getDoB() { return dob; }
  
  /**
   * Retrieves the date of death
   * @return the date of death
   **/
  public int getDoD() { return dod; }
  
  /**
   * Retrieves the ID of the spouse
   * @return the ID of the spouse
   **/
  public String getSpouse() { return spouse; }
  
  /**
   * Retrieves the title 
   * @return the title
   **/
  public String getTitle() { return title; }
  
  /**
   * Retrieves the list of children
   * @return the list of children
   **/
  public LinkedList<String> getChildren() { return children; }
  
  ///////////////////////////////Modifiers/Setters/////////////////////////////////////
  //None are included because the information does not need to be modified after a constructor is called
  
  
  ///////////////////////////////Other Methods/////////////////////////////////////
  /**
   * Add a new child to the children list
   * @param tn a new TreeNode child
   **/
  public void addChild(String str) {
    children.add(str);
  }
  
  /**
   * Return the age of the Person. If the person is still alive use 2008 as the death year.
   * @return the age of the Person
   **/
  public int age() {  
    int deathYear = dod;
    //if the person is still alive use 2008 as the date of death
    if(deathYear < 0) 
      deathYear = 2008;
    //return the age
    return deathYear - dob;
  }
  
  /**
   * Return a String representation of the TreeNode
   * @return a String representation of the TreeNode
   **/
  public String toString() {
    return title + " " + name;
  }
  
  public static void main(String a[]) {
    Person fred = new Person("fred1", "Fred Jones", 1982, -1, "Flossie", "Mr.");
    System.out.println(fred);
  }
}