1 /*
2 * Copyright (C) 2010 The Guava Authors
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 package com.google.common.collect;
18
19 import com.google.common.annotations.GwtCompatible;
20
21 import java.util.ListIterator;
22
23 /**
24 * A list iterator that does not support {@link #remove}, {@link #add}, or
25 * {@link #set}.
26 *
27 * @since 7.0
28 * @author Louis Wasserman
29 */
30 @GwtCompatible
31 public abstract class UnmodifiableListIterator<E>
32 extends UnmodifiableIterator<E> implements ListIterator<E> {
33 /** Constructor for use by subclasses. */
34 protected UnmodifiableListIterator() {}
35
36 /**
37 * Guaranteed to throw an exception and leave the underlying data unmodified.
38 *
39 * @throws UnsupportedOperationException always
40 * @deprecated Unsupported operation.
41 */
42 @Deprecated @Override public final void add(E e) {
43 throw new UnsupportedOperationException();
44 }
45
46 /**
47 * Guaranteed to throw an exception and leave the underlying data unmodified.
48 *
49 * @throws UnsupportedOperationException always
50 * @deprecated Unsupported operation.
51 */
52 @Deprecated @Override public final void set(E e) {
53 throw new UnsupportedOperationException();
54 }
55 }