/*
* Copyright (C) 2010 The Guava Authors
*
* Licensed 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 com.google.common.collect;
import com.google.common.annotations.GwtCompatible;
import java.util.ListIterator;
/**
* A list iterator that does not support {@link #remove}, {@link #add}, or
* {@link #set}.
*
* @since 7.0
* @author Louis Wasserman
*/
@GwtCompatible
public abstract class UnmodifiableListIterator<E>
extends UnmodifiableIterator<E> implements ListIterator<E> {
/** Constructor for use by subclasses. */
protected UnmodifiableListIterator() {}
/**
* Guaranteed to throw an exception and leave the underlying data unmodified.
*
* @throws UnsupportedOperationException always
*/
@Override public final void add(E e) {
throw new UnsupportedOperationException();
}
/**
* Guaranteed to throw an exception and leave the underlying data unmodified.
*
* @throws UnsupportedOperationException always
*/
@Override public final void set(E e) {
throw new UnsupportedOperationException();
}
}
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