001/* 002 * Copyright (C) 2010 The Guava Authors 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package com.google.common.collect; 018 019import com.google.common.annotations.GwtCompatible; 020import java.util.ListIterator; 021 022/** 023 * A list iterator that does not support {@link #remove}, {@link #add}, or {@link #set}. 024 * 025 * @since 7.0 026 * @author Louis Wasserman 027 */ 028@GwtCompatible 029public abstract class UnmodifiableListIterator<E> extends UnmodifiableIterator<E> 030 implements ListIterator<E> { 031 /** Constructor for use by subclasses. */ 032 protected UnmodifiableListIterator() {} 033 034 /** 035 * Guaranteed to throw an exception and leave the underlying data unmodified. 036 * 037 * @throws UnsupportedOperationException always 038 * @deprecated Unsupported operation. 039 */ 040 @Deprecated 041 @Override 042 public final void add(E e) { 043 throw new UnsupportedOperationException(); 044 } 045 046 /** 047 * Guaranteed to throw an exception and leave the underlying data unmodified. 048 * 049 * @throws UnsupportedOperationException always 050 * @deprecated Unsupported operation. 051 */ 052 @Deprecated 053 @Override 054 public final void set(E e) { 055 throw new UnsupportedOperationException(); 056 } 057}