| /* $Id$ |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package org.apache.etch.util; |
| |
| import java.util.Iterator; |
| import java.util.NoSuchElementException; |
| |
| /** |
| * @param <E> |
| * @author wert |
| */ |
| public class EmptyIterator<E> implements Iterator<E> |
| { |
| /* (non-Javadoc) |
| * @see java.util.Iterator#hasNext() |
| */ |
| public boolean hasNext() |
| { |
| return false; |
| } |
| |
| /* (non-Javadoc) |
| * @see java.util.Iterator#next() |
| */ |
| public E next() |
| { |
| throw new NoSuchElementException(); |
| } |
| |
| /* (non-Javadoc) |
| * @see java.util.Iterator#remove() |
| */ |
| public void remove() |
| { |
| throw new IllegalStateException(); |
| } |
| |
| /** |
| * An empty iterator to use when you need it. |
| */ |
| public final static Iterator<Object> EMPTY_ITERATOR = new EmptyIterator<Object>(); |
| } |