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1   package org.apache.commons.ognl;
2   
3   /*
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *   http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  
22  import java.util.Enumeration;
23  import java.util.Iterator;
24  
25  /**
26   * Object that implements Iterator from an Enumeration
27   * 
28   * @author Luke Blanshard (blanshlu@netscape.net)
29   * @author Drew Davidson (drew@ognl.org)
30   */
31  public class EnumerationIterator<E>
32      implements Iterator<E>
33  {
34  
35      public static <T> Iterator<T> newIterator( Enumeration<T> e )
36      {
37          return new EnumerationIterator<T>( e );
38      }
39  
40      private final Enumeration<E> e;
41  
42      public EnumerationIterator( Enumeration<E> e )
43      {
44          this.e = e;
45      }
46  
47      public boolean hasNext()
48      {
49          return e.hasMoreElements();
50      }
51  
52      public E next()
53      {
54          return e.nextElement();
55      }
56  
57      public void remove()
58      {
59          throw new UnsupportedOperationException( "remove() not supported by Enumeration" );
60      }
61  
62  }