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Commons Collections example source code file (AbstractIteratorDecorator.java)

This example Commons Collections source code file (AbstractIteratorDecorator.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Commons Collections tags/keywords

abstractiteratordecorator, abstractiteratordecorator, illegalargumentexception, illegalargumentexception, iterator, iterator, object, object, util

The Commons Collections AbstractIteratorDecorator.java source code

 *  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 org.apache.commons.collections.iterators;

import java.util.Iterator;

 * Provides basic behaviour for decorating an iterator with extra functionality.
 * <p>
 * All methods are forwarded to the decorated iterator.
 * @since Commons Collections 3.0
 * @version $Revision: 646777 $ $Date: 2008-04-10 13:33:15 +0100 (Thu, 10 Apr 2008) $
 * @author James Strachan
 * @author Stephen Colebourne
public class AbstractIteratorDecorator implements Iterator {

    /** The iterator being decorated */
    protected final Iterator iterator;

     * Constructor that decorates the specified iterator.
     * @param iterator  the iterator to decorate, must not be null
     * @throws IllegalArgumentException if the collection is null
    public AbstractIteratorDecorator(Iterator iterator) {
        if (iterator == null) {
            throw new IllegalArgumentException("Iterator must not be null");
        this.iterator = iterator;

     * Gets the iterator being decorated.
     * @return the decorated iterator
    protected Iterator getIterator() {
        return iterator;

    public boolean hasNext() {
        return iterator.hasNext();

    public Object next() {
        return iterator.next();

    public void remove() {


Other Commons Collections examples (source code examples)

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