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Java > Open Source Codes > net > sf > jga > util > StringTokenizerIterator


1 // ============================================================================
2 // $Id: StringTokenizerIterator.java,v 1.6 2005/08/02 23:45:22 davidahall Exp $
3 // Copyright (c) 2003-2005 David A. Hall
4 // ============================================================================
5 // The contents of this file are subject to the Common Development and
6 // Distribution License (CDDL), Version 1.0 (the License); you may not use this
7 // file except in compliance with the License. You should have received a copy
8 // of the the License along with this file: if not, a copy of the License is
9 // available from Sun Microsystems, Inc.
10 //
11 // http://www.sun.com/cddl/cddl.html
12 //
13 // From time to time, the license steward (initially Sun Microsystems, Inc.) may
14 // publish revised and/or new versions of the License. You may not use,
15 // distribute, or otherwise make this file available under subsequent versions
16 // of the License.
17 //
18 // Alternatively, the contents of this file may be used under the terms of the
19 // GNU Lesser General Public License Version 2.1 or later (the "LGPL"), in which
20 // case the provisions of the LGPL are applicable instead of those above. If you
21 // wish to allow use of your version of this file only under the terms of the
22 // LGPL, and not to allow others to use your version of this file under the
23 // terms of the CDDL, indicate your decision by deleting the provisions above
24 // and replace them with the notice and other provisions required by the LGPL.
25 // If you do not delete the provisions above, a recipient may use your version
26 // of this file under the terms of either the CDDL or the LGPL.
27 //
28 // This library is distributed in the hope that it will be useful,
29 // but WITHOUT ANY WARRANTY; without even the implied warranty of
30 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
31 // ============================================================================
32 package net.sf.jga.util;
33
34 import java.util.NoSuchElementException JavaDoc;
35 import java.util.StringTokenizer JavaDoc;
36 import java.util.Iterator JavaDoc;
37
38 /**
39  * Adapts a StringTokenizer to the Iterator interface.
40  * <p>
41  * Copyright &copy; 2003-2005 David A. Hall
42  *
43  * @author <a HREF="mailto:davidahall@users.sf.net">David A. Hall</a>
44  */
45
46 public class StringTokenizerIterator
47     implements Iterator JavaDoc<String JavaDoc>, Iterable JavaDoc<String JavaDoc>
48 {
49     private StringTokenizer JavaDoc _base;
50     
51     public StringTokenizerIterator (StringTokenizer JavaDoc tok) {
52         if (tok == null)
53             throw new IllegalArgumentException JavaDoc();
54         
55         _base = tok;
56     }
57     
58     // - - - - - - - - - - - - - -
59 // Iterable<String> interface
60 // - - - - - - - - - - - - - -
61
62     public Iterator JavaDoc<String JavaDoc> iterator() { return this; }
63     
64     // - - - - - - - - - - - - - -
65 // Iterator<String> interface
66 // - - - - - - - - - - - - - -
67
68     /**
69      * Returns true if the base tokenizer has tokens remaining.
70      */
71
72     public boolean hasNext() {
73         return _base.hasMoreTokens();
74     }
75     
76     /**
77      * Returns the next string in the base tokenizer.
78      * @throws NoSuchElementException if there are no more tokens in the base
79      * tokenizer's string
80      */
81
82     public String JavaDoc next() {
83         return _base.nextToken();
84     }
85
86     public void remove() { throw new UnsupportedOperationException JavaDoc(); }
87 }
88
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