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Java > Open Source Codes > org > apache > commons > jexl > util > EnumerationIterator


1 /*
2  * Copyright 1999-2001,2004 The Apache Software Foundation.
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 org.apache.commons.jexl.util;
18
19
20 import java.util.Iterator JavaDoc;
21 import java.util.Enumeration JavaDoc;
22
23 /**
24  * An Iterator wrapper for an Enumeration.
25  *
26  * @since 1.0
27  * @author <a HREF="mailto:geirm@optonline.net">Geir Magnusson Jr.</a>
28  * @version $Id: EnumerationIterator.java 398330 2006-04-30 12:52:35Z dion $
29  */
30 public class EnumerationIterator implements Iterator JavaDoc {
31     /**
32      * The enumeration to iterate over.
33      */
34     private final Enumeration JavaDoc enumeration;
35
36     /**
37      * Creates a new iteratorwrapper instance for the specified
38      * Enumeration.
39      *
40      * @param enumer The Enumeration to wrap.
41      */
42     public EnumerationIterator(Enumeration JavaDoc enumer) {
43         enumeration = enumer;
44     }
45
46     /**
47      * Move to next element in the array.
48      *
49      * @return The next object in the array.
50      */
51     public Object JavaDoc next() {
52         return enumeration.nextElement();
53     }
54     
55     /**
56      * Check to see if there is another element in the array.
57      *
58      * @return Whether there is another element.
59      */
60     public boolean hasNext() {
61         return enumeration.hasMoreElements();
62     }
63
64     /**
65      * Unimplemented. No analogy in Enumeration
66      */
67     public void remove() {
68         // not implemented
69 }
70    
71 }
72
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