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Java > Open Source Codes > edu > umd > cs > findbugs > util > NullIterator


1 /*
2  * FindBugs - Find Bugs in Java programs
3  * Copyright (C) 2006, University of Maryland
4  *
5  * This library is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU Lesser General Public
7  * License as published by the Free Software Foundation; either
8  * version 2.1 of the License, or (at your option) any later version.
9  *
10  * This library is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13  * Lesser General Public License for more details.
14  *
15  * You should have received a copy of the GNU Lesser General Public
16  * License along with this library; if not, write to the Free Software
17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18  */

19
20 package edu.umd.cs.findbugs.util;
21
22 import java.util.Iterator JavaDoc;
23
24 /**
25  * An Iterator that returns no elements.
26  *
27  * @author David Hovemeyer
28  */

29 public class NullIterator<E> implements Iterator JavaDoc<E> {
30
31     /* (non-Javadoc)
32      * @see java.util.Iterator#hasNext()
33      */

34     public boolean hasNext() {
35         return false;
36     }
37
38     /* (non-Javadoc)
39      * @see java.util.Iterator#next()
40      */

41     public E next() {
42         throw new UnsupportedOperationException JavaDoc();
43     }
44
45     /* (non-Javadoc)
46      * @see java.util.Iterator#remove()
47      */

48     public void remove() {
49         throw new UnsupportedOperationException JavaDoc();
50     }
51
52 }
53
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