public class TreeTester
{
   public static void main(String[] args)
   {
      BinarySearchTree<String> names = new BinarySearchTree<>();
      names.add("Romeo");
      names.add("Juliet");
      names.add("Tom");
      names.add("Dick");
      names.add("Harry");

      class PrintVisitor implements Visitor<String>
      {
         public void visit(String data)
         {
            System.out.print(data + " ");
         }
      }
   
      names.inorder(new PrintVisitor());
      System.out.println();

      System.out.println("Expected: Dick Harry Juliet Romeo Tom");
   }
}