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Google Collections Library is a suite of new collections and collection-related goodness for Java 5.0

There is a newer version: 1.0

/*
 * Copyright (C) 2008 Google Inc.
 *
 * 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.Iterator;

/**
 * An iterator that does not support {@link #remove}.
 *
 * @author Jared Levy
 */
@GwtCompatible
public abstract class UnmodifiableIterator implements Iterator {
  /**
   * Guaranteed to throw an exception and leave the underlying data unmodified.
   *
   * @throws UnsupportedOperationException always
   */
  public final void remove() {
    throw new UnsupportedOperationException();
  }
}