001 /*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017
018 package org.apache.commons.jexl2.internal;
019
020
021 import java.util.Iterator;
022 import java.util.Enumeration;
023
024 /**
025 * An Iterator wrapper for an Enumeration.
026 * @param <T> the type of object this iterator returns
027 * @since 1.0
028 */
029 public class EnumerationIterator<T> implements Iterator<T> {
030 /**
031 * The enumeration to iterate over.
032 */
033 private final Enumeration<T> enumeration;
034
035 /**
036 * Creates a new iteratorwrapper instance for the specified
037 * Enumeration.
038 *
039 * @param enumer The Enumeration to wrap.
040 */
041 public EnumerationIterator(Enumeration<T> enumer) {
042 enumeration = enumer;
043 }
044
045 /**
046 * Move to next element in the array.
047 *
048 * @return The next object in the array.
049 */
050 public T next() {
051 return enumeration.nextElement();
052 }
053
054 /**
055 * Check to see if there is another element in the array.
056 *
057 * @return Whether there is another element.
058 */
059 public boolean hasNext() {
060 return enumeration.hasMoreElements();
061 }
062
063 /**
064 * Unimplemented. No analogy in Enumeration
065 */
066 public void remove() {
067 // not implemented
068 }
069 }