| /* |
| * 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 java.util; |
| |
| /** |
| * AbstractSequentialList is an abstract implementation of the List interface. |
| * This implementation does not support adding. A subclass must implement the |
| * abstract method listIterator(). |
| * |
| * @since 1.2 |
| */ |
| public abstract class AbstractSequentialList<E> extends AbstractList<E> { |
| |
| /** |
| * Constructs a new instance of this AbstractSequentialList. |
| */ |
| protected AbstractSequentialList() { |
| } |
| |
| @Override |
| public void add(int location, E object) { |
| listIterator(location).add(object); |
| } |
| |
| @Override |
| public boolean addAll(int location, Collection<? extends E> collection) { |
| ListIterator<E> it = listIterator(location); |
| Iterator<? extends E> colIt = collection.iterator(); |
| int next = it.nextIndex(); |
| while (colIt.hasNext()) { |
| it.add(colIt.next()); |
| } |
| return next != it.nextIndex(); |
| } |
| |
| @Override |
| public E get(int location) { |
| try { |
| return listIterator(location).next(); |
| } catch (NoSuchElementException e) { |
| throw new IndexOutOfBoundsException(); |
| } |
| } |
| |
| @Override |
| public Iterator<E> iterator() { |
| return listIterator(0); |
| } |
| |
| @Override |
| public abstract ListIterator<E> listIterator(int location); |
| |
| @Override |
| public E remove(int location) { |
| try { |
| ListIterator<E> it = listIterator(location); |
| E result = it.next(); |
| it.remove(); |
| return result; |
| } catch (NoSuchElementException e) { |
| throw new IndexOutOfBoundsException(); |
| } |
| } |
| |
| @Override |
| public E set(int location, E object) { |
| ListIterator<E> it = listIterator(location); |
| if (!it.hasNext()) { |
| throw new IndexOutOfBoundsException(); |
| } |
| E result = it.next(); |
| it.set(object); |
| return result; |
| } |
| } |