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Java > Open Source Codes > org > apache > myfaces > util > ReverseListIterator


1 /*
2  * Copyright 2004 The Apache Software Foundation.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */

16 package org.apache.myfaces.util;
17
18 import java.util.Iterator JavaDoc;
19 import java.util.List JavaDoc;
20 import java.util.NoSuchElementException JavaDoc;
21
22 /**
23  * @author Manfred Geiler (latest modification by $Author: matze $)
24  * @version $Revision: 1.3 $ $Date: 2004/10/13 11:51:01 $
25  * $Log: ReverseListIterator.java,v $
26  * Revision 1.3 2004/10/13 11:51:01 matze
27  * renamed packages to org.apache
28  *
29  * Revision 1.2 2004/07/01 22:05:15 mwessendorf
30  * ASF switch
31  *
32  * Revision 1.1 2004/05/17 14:28:28 manolito
33  * new configuration concept
34  *
35  */

36 public class ReverseListIterator
37         implements Iterator JavaDoc
38 {
39     //private static final Log log = LogFactory.getLog(ReverseListIterator.class);
40

41     private int _cursor;
42     private List JavaDoc _list;
43
44     public ReverseListIterator(List JavaDoc list)
45     {
46         _list = list;
47         _cursor = list.size() - 1;
48     }
49
50     public boolean hasNext()
51     {
52         return _cursor >= 0;
53     }
54
55     public Object JavaDoc next()
56     {
57         if (_cursor < 0)
58         {
59             throw new NoSuchElementException JavaDoc();
60         }
61         return _list.get(_cursor--);
62     }
63
64     public void remove()
65     {
66         throw new UnsupportedOperationException JavaDoc();
67     }
68
69 }
70
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