LinkedListNode


1   package org.shiftone.cache.util;
2   
3   
4   
5   /**
6    * Class LinkedListNode
7    *
8    *
9    * @author <a HREF="mailto:jeff@shiftone.org">Jeff Drost</a>
10   * @version $Revision: 1.6 $
11   */
12  public class LinkedListNode
13  {
14  
15      LinkedListNode next;
16      LinkedListNode prev;
17      Object           value;
18  
19      public LinkedListNode(Object   value)
20      {
21          this.value = value;
22      }
23  
24  
25      /**
26       * Method getValue
27       */
28      public Object   getValue()
29      {
30          return value;
31      }
32  
33  
34      /**
35       * Method getNext
36       */
37      public LinkedListNode getNext()
38      {
39  
40          return (next.isHeaderNode()
41                  ? null
42                  : next);
43      }
44  
45  
46      /**
47       * Method getPrevious
48       */
49      public LinkedListNode getPrevious()
50      {
51  
52          return (prev.isHeaderNode()
53                  ? null
54                  : prev);
55      }
56  
57  
58      /**
59       * is this node the header node in a linked list?
60       */
61      boolean isHeaderNode()
62      {
63          return (value == this);
64      }
65  }
66

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