| /* |
| * Copyright (C) The Apache Software Foundation. All rights reserved. |
| * |
| * This software is published under the terms of the Apache Software License |
| * version 1.1, a copy of which has been included with this distribution in |
| * the LICENSE.txt file. |
| */ |
| |
| package org.apache.log4j.helpers; |
| |
| import java.util.Enumeration; |
| import java.util.NoSuchElementException; |
| |
| /** |
| |
| An always-empty Enumerator. |
| |
| @author Anders Kristensen |
| @since version 1.0 |
| */ |
| public class NullEnumeration implements Enumeration { |
| private static final NullEnumeration instance = new NullEnumeration(); |
| |
| private |
| NullEnumeration() { |
| } |
| |
| public |
| static |
| NullEnumeration getInstance() { |
| return instance; |
| } |
| |
| public |
| boolean hasMoreElements() { |
| return false; |
| } |
| |
| public |
| Object nextElement() { |
| throw new NoSuchElementException(); |
| } |
| } |