1 /*
2 * $Source$
3 * $Revision$
4 *
5 * Copyright (C) 2000 William Chesters
6 *
7 * Part of Melati (http://melati.org), a framework for the rapid
8 * development of clean, maintainable web applications.
9 *
10 * Melati is free software; Permission is granted to copy, distribute
11 * and/or modify this software under the terms either:
12 *
13 * a) the GNU General Public License as published by the Free Software
14 * Foundation; either version 2 of the License, or (at your option)
15 * any later version,
16 *
17 * or
18 *
19 * b) any version of the Melati Software License, as published
20 * at http://melati.org
21 *
22 * You should have received a copy of the GNU General Public License and
23 * the Melati Software License along with this program;
24 * if not, write to the Free Software Foundation, Inc.,
25 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA to obtain the
26 * GNU General Public License and visit http://melati.org to obtain the
27 * Melati Software License.
28 *
29 * Feel free to contact the Developers of Melati (http://melati.org),
30 * if you would like to work out a different arrangement than the options
31 * outlined here. It is our intention to allow Melati to be used by as
32 * wide an audience as possible.
33 *
34 * This program is distributed in the hope that it will be useful,
35 * but WITHOUT ANY WARRANTY; without even the implied warranty of
36 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
37 * GNU General Public License for more details.
38 *
39 * Contact details for copyright holder:
40 *
41 * William Chesters <williamc At paneris.org>
42 * http://paneris.org/~williamc
43 * Obrechtstraat 114, 2517VX Den Haag, The Netherlands
44 */
45
46 package org.melati.poem.util;
47
48 import java.util.Enumeration;
49 import java.util.NoSuchElementException;
50
51 /**
52 * An <code>Enumeration</code> created from an <code>Array</code>.
53 */
54 public class ArrayEnumeration<T> implements Enumeration<T> {
55 private T[] a;
56 private int i;
57
58 /**
59 * Constructor.
60 * @param a the Array to enumerate
61 */
62 public ArrayEnumeration(T[] a) {
63 this.a = a;
64 i = 0;
65 }
66
67 /**
68 * {@inheritDoc}
69 * @see java.util.Enumeration#hasMoreElements()
70 */
71 public boolean hasMoreElements() {
72 return i < a.length;
73 }
74
75 /**
76 * {@inheritDoc}
77 * @see java.util.Enumeration#nextElement()
78 */
79 public T nextElement() {
80 if (i < a.length)
81 return (T)a[i++];
82 else
83 throw new NoSuchElementException();
84 }
85 }