title: toString method
body: <p>I want to add a <code>toString</code> method in the <code>Item</code> class that returns the title of the item in there. </p>
  
  <p>I have need make sure that the toString method in the <code>DVD</code> class calls the <code>toString</code> method in <code>Item</code> so that it can return a string that contains both the title and the director. </p>
  
  <p><code>Item</code> is the superclass and <code>DVD</code> is the subclass.</p>
  
  <pre><code>  public class Item
     {
    private String title;
    private int playingTime;
    private boolean gotIt;
    private String comment;
  
  public Item(String theTitle, int time)
  {
      title = theTitle;
      playingTime = time;
      gotIt = false;
      comment = "&lt;no comment&gt;";
  }
  
  // Getters and setters omitted
  
  public void print()
  {
      System.out.print(title + " (" + playingTime + " mins)");
      if(gotIt) {
          System.out.println("*");
      } else {
          System.out.println();
      }
      System.out.println("    " + comment);
  }
  </code></pre>
  
  <p>}</p>
  
  <pre><code> public class DVD extends Item 
   {
   private String director;
  
  public DVD(String theTitle, String theDirector, int time)
  {
      super(theTitle, time);
      director = theDirector;
  }
  
  // Getters and setters omitted
  
  public void print()
  {
      System.out.println("    director: " + director);
  }
  </code></pre>
  
  <p>}</p>