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1   /*
2   * The contents of this file are subject to the BT "ZEUS" Open Source 
3   * Licence (L77741), Version 1.0 (the "Licence"); you may not use this file 
4   * except in compliance with the Licence. You may obtain a copy of the Licence
5   * from $ZEUS_INSTALL/licence.html or alternatively from
6   * http://www.labs.bt.com/projects/agents/zeus/licence.htm
7   * 
8   * Except as stated in Clause 7 of the Licence, software distributed under the
9   * Licence is distributed WITHOUT WARRANTY OF ANY KIND, either express or 
10  * implied. See the Licence for the specific language governing rights and 
11  * limitations under the Licence.
12  * 
13  * The Original Code is within the package zeus.*.
14  * The Initial Developer of the Original Code is British Telecommunications
15  * public limited company, whose registered office is at 81 Newgate Street, 
16  * London, EC1A 7AJ, England. Portions created by British Telecommunications 
17  * public limited company are Copyright 1996-9. All Rights Reserved.
18  * 
19  * THIS NOTICE MUST BE INCLUDED ON ANY COPY OF THIS FILE
20  */
21  
22  
23  
24  package zeus.util;
25  
26  import java.util.*;
27  
28  public class Tree {
29     protected TreeNode root = null;  
30  
31     public Tree(Object data) {
32        root = new TreeNode(data);
33     }
34  
35     public TreeNode getRoot() { return root; }
36  
37     public Enumeration values() {
38        return root.values();
39     }
40     public Enumeration nodes() {
41        return root.nodes();
42     }
43  
44  
45     public static void main(String[] args) {
46        Tree tree = new Tree("ZeusFact");
47        TreeNode root, node;
48  
49        root = tree.getRoot();
50  
51        TreeNode ZeusFact = tree.getRoot();
52        TreeNode Animal = ZeusFact.addChild("Animal");
53        TreeNode Fish = Animal.addChild("Fish");
54        TreeNode Shark = Fish.addChild("Shark");
55        TreeNode Cod = Fish.addChild("Cod");
56        TreeNode Mammal = Animal.addChild("Mammal");
57        TreeNode Human = Mammal.addChild("Human");
58        TreeNode Cat = Mammal.addChild("Cat");
59        TreeNode Dog = Mammal.addChild("Dog");
60        TreeNode Amphibian = Animal.addChild("Amphibian");
61        TreeNode Frog = Amphibian.addChild("Frog");
62        TreeNode Toad = Amphibian.addChild("Toad");
63  
64        TreeNode TransportDevice = ZeusFact.addChild("TransportDevice");
65        TreeNode Car = TransportDevice.addChild("Car");
66        TreeNode Bus = TransportDevice.addChild("Bus");
67  
68  
69        Enumeration enum = tree.nodes();
70        while( enum.hasMoreElements() ) {
71           node = (TreeNode)enum.nextElement();
72           System.out.println(node);
73        }
74        
75     }
76  }