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Java > Open Source Codes > com > caucho > util > EnumIterator


1 /*
2  * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
3  *
4  * This file is part of Resin(R) Open Source
5  *
6  * Each copy or derived work must preserve the copyright notice and this
7  * notice unmodified.
8  *
9  * Resin Open Source is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * Resin Open Source is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17  * of NON-INFRINGEMENT. See the GNU General Public License for more
18  * details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with Resin Open Source; if not, write to the
22  * Free SoftwareFoundation, Inc.
23  * 59 Temple Place, Suite 330
24  * Boston, MA 02111-1307 USA
25  *
26  * @author Scott Ferguson
27  */

28
29 package com.caucho.util;
30
31 import java.util.Enumeration JavaDoc;
32 import java.util.Iterator JavaDoc;
33
34 /**
35  * Makes an Enumeration appear as an Iterator.
36  */

37 public class EnumIterator<T> implements Iterator JavaDoc<T> {
38   Enumeration JavaDoc<T> e;
39
40   public EnumIterator(Enumeration JavaDoc<T> e)
41   {
42     this.e = e;
43   }
44
45   public boolean hasNext()
46   {
47     return e != null && e.hasMoreElements();
48   }
49
50   public T next()
51   {
52     return e != null ? e.nextElement() : null;
53   }
54
55   public void remove()
56   {
57     throw new UnsupportedOperationException JavaDoc();
58   }
59 }
60
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