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 or later
5    * as published by the Free Software Foundation. This program is distributed
6    * in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
7    * the 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   * © CrossWire Bible Society, 2008 - 2016
18   *
19   */
20  package org.crosswire.common.util;
21  
22  import java.util.Iterator;
23  import java.util.NoSuchElementException;
24  
25  /**
26   * An <code>ItemIterator</code> is an <code>Iterator</code> that iterates a
27   * single item.
28   * 
29   * @param <T> The type of the single element that this iterator will return.
30   * @see gnu.lgpl.License The GNU Lesser General Public License for details.
31   * @author DM Smith
32   */
33  public class ItemIterator<T> implements Iterator<T> {
34      public ItemIterator(T item) {
35          this.item = item;
36      }
37  
38      /* (non-Javadoc)
39       * @see java.util.Iterator#hasNext()
40       */
41      public boolean hasNext() {
42          return !done;
43      }
44  
45      /* (non-Javadoc)
46       * @see java.util.Iterator#next()
47       */
48      public T next() {
49          if (done) {
50              throw new NoSuchElementException();
51          }
52  
53          done = true;
54          return item;
55      }
56  
57      /* (non-Javadoc)
58       * @see java.util.Iterator#remove()
59       */
60      public void remove() throws UnsupportedOperationException {
61          throw new UnsupportedOperationException();
62      }
63  
64      private T item;
65      private boolean done;
66  }
67