1  /**

  2     This class demonstrates the tree class.

  3  */

  4  public class TreeDemo

  5  {

  6     public static void main(String[] args)

  7     {

  8        Tree t1 = new Tree("Anne");

  9        Tree t2 = new Tree("Peter");

 10        t1.addSubtree(t2);

 11        Tree t3 = new Tree("Zara");

 12        t1.addSubtree(t3);

 13        Tree t4 = new Tree("Savannah");

 14        t2.addSubtree(t4);

 15        System.out.println("Size: " + t1.size());

 16     }

 17  }