mirror of
https://codeberg.org/Mercury-IM/Smack
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90 lines
2.2 KiB
Java
90 lines
2.2 KiB
Java
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// GenericsNote: Converted.
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/*
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* Copyright 2004 The Apache Software Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.jivesoftware.smack.util.collections;
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import java.util.NoSuchElementException;
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/**
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* Provides an implementation of an empty iterator.
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*
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* @author Matt Hall, John Watkinson, Stephen Colebourne
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* @version $Revision: 1.1 $ $Date: 2005/10/11 17:05:24 $
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* @since Commons Collections 3.1
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*/
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abstract class AbstractEmptyIterator <E> {
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/**
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* Constructor.
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*/
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protected AbstractEmptyIterator() {
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super();
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}
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public boolean hasNext() {
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return false;
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}
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public E next() {
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throw new NoSuchElementException("Iterator contains no elements");
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}
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public boolean hasPrevious() {
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return false;
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}
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public E previous() {
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throw new NoSuchElementException("Iterator contains no elements");
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}
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public int nextIndex() {
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return 0;
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}
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public int previousIndex() {
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return -1;
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}
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public void add(E obj) {
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throw new UnsupportedOperationException("add() not supported for empty Iterator");
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}
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public void set(E obj) {
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throw new IllegalStateException("Iterator contains no elements");
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}
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public void remove() {
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throw new IllegalStateException("Iterator contains no elements");
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}
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public E getKey() {
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throw new IllegalStateException("Iterator contains no elements");
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}
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public E getValue() {
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throw new IllegalStateException("Iterator contains no elements");
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}
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public E setValue(E value) {
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throw new IllegalStateException("Iterator contains no elements");
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}
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public void reset() {
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// do nothing
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}
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}
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