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Java > Open Source Codes > org > apache > fop > fo > OneCharIterator


1 /*
2  * Licensed to the Apache Software Foundation (ASF) under one or more
3  * contributor license agreements. See the NOTICE file distributed with
4  * this work for additional information regarding copyright ownership.
5  * The ASF licenses this file to You under the Apache License, Version 2.0
6  * (the "License"); you may not use this file except in compliance with
7  * the License. You may obtain a copy of the License at
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17
18 /* $Id: OneCharIterator.java 426576 2006-07-28 15:44:37Z jeremias $ */
19
20 package org.apache.fop.fo;
21
22 import java.util.NoSuchElementException JavaDoc;
23
24 /**
25  * Class providing an iterator for one character.
26  */
27 public class OneCharIterator extends CharIterator {
28
29     private boolean bFirst = true;
30     private char charCode;
31
32     /**
33      * Constructor
34      * @param c the character that this iterator should iterate.
35      */
36     public OneCharIterator(char c) {
37         this.charCode = c;
38     }
39
40     /**
41      * @return true if there is another element in the collection over which to
42      * iterate (since this iterator only handles one character, this will return
43      * false if it is past that character).
44      */
45     public boolean hasNext() {
46         return bFirst;
47     }
48
49     /**
50      * @return the next character, if there is one (since there is only one
51      * character over which to iterate, it must be the first character).
52      * @throws NoSuchElementException if past the first character
53      */
54     public char nextChar() throws NoSuchElementException JavaDoc {
55         if (bFirst) {
56             bFirst = false;
57             return charCode;
58         } else {
59             throw new NoSuchElementException JavaDoc();
60         }
61     }
62
63 }
64
65
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