1   /**
2    * Distribution License:
3    * JSword is free software; you can redistribute it and/or modify it under
4    * the terms of the GNU Lesser General Public License, version 2.1 as published by
5    * the Free Software Foundation. This program is distributed in the hope
6    * that it will be useful, but WITHOUT ANY WARRANTY; without even the
7    * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
8    * See the GNU Lesser General Public License for more details.
9    *
10   * The License is available on the internet at:
11   *       http://www.gnu.org/copyleft/lgpl.html
12   * or by writing to:
13   *      Free Software Foundation, Inc.
14   *      59 Temple Place - Suite 330
15   *      Boston, MA 02111-1307, USA
16   *
17   * Copyright: 2005
18   *     The copyright to this program is held by it's authors.
19   *
20   * ID: $Id: EmptyIterator.java 2090 2011-03-07 04:13:05Z dmsmith $
21   */
22  package org.crosswire.common.util;
23  
24  import java.util.Iterator;
25  import java.util.NoSuchElementException;
26  
27  /**
28   * An <code>EmptyIterator</code> is an <code>Iterator</code> that iterates over
29   * nothing.
30   * 
31   * 
32   * @see gnu.lgpl.License for license details.<br>
33   *      The copyright to this program is held by it's authors.
34   * @author DM Smith [ dmsmith555 at yahoo dot com]
35   */
36  public class EmptyIterator<E> implements Iterator<E> {
37  
38      /**
39       * Construct an <code>EmptyIterator</code>.
40       */
41      public EmptyIterator() {
42      }
43  
44      /* (non-Javadoc)
45       * @see java.util.Iterator#remove()
46       */
47      public void remove() {
48          throw new UnsupportedOperationException();
49      }
50  
51      /* (non-Javadoc)
52       * @see java.util.Iterator#hasNext()
53       */
54      public boolean hasNext() {
55          return false;
56      }
57  
58      /* (non-Javadoc)
59       * @see java.util.Iterator#next()
60       */
61      public E next() {
62          throw new NoSuchElementException();
63      }
64  
65  }
66