1// GenericsNote: Converted.
2/*
3 *  Copyright 2004 The Apache Software Foundation
4 *
5 *  Licensed under the Apache License, Version 2.0 (the "License");
6 *  you may not use this file except in compliance with the License.
7 *  You may obtain a copy of the License at
8 *
9 *      http://www.apache.org/licenses/LICENSE-2.0
10 *
11 *  Unless required by applicable law or agreed to in writing, software
12 *  distributed under the License is distributed on an "AS IS" BASIS,
13 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 *  See the License for the specific language governing permissions and
15 *  limitations under the License.
16 */
17package org.jivesoftware.smack.util.collections;
18
19import java.util.Iterator;
20
21/**
22 * Provides an implementation of an empty iterator.
23 * <p/>
24 * This class provides an implementation of an empty iterator.
25 * This class provides for binary compatability between Commons Collections
26 * 2.1.1 and 3.1 due to issues with <code>IteratorUtils</code>.
27 *
28 * @author Matt Hall, John Watkinson, Stephen Colebourne
29 * @version $Revision: 1.1 $ $Date: 2005/10/11 17:05:24 $
30 * @since Commons Collections 2.1.1 and 3.1
31 */
32public class EmptyIterator <E> extends AbstractEmptyIterator<E> implements ResettableIterator<E> {
33
34    /**
35     * Singleton instance of the iterator.
36     *
37     * @since Commons Collections 3.1
38     */
39    public static final ResettableIterator RESETTABLE_INSTANCE = new EmptyIterator();
40    /**
41     * Singleton instance of the iterator.
42     *
43     * @since Commons Collections 2.1.1 and 3.1
44     */
45    public static final Iterator INSTANCE = RESETTABLE_INSTANCE;
46
47	public static <T> Iterator<T> getInstance() {
48		return INSTANCE;
49	}
50
51    /**
52     * Constructor.
53     */
54    protected EmptyIterator() {
55        super();
56    }
57
58}
59