1 // BlockIterator.java
2 /*
3 * Copyright (c) 2003, Henri Yandell
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or
7 * without modification, are permitted provided that the
8 * following conditions are met:
9 *
10 * + Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
13 * + Redistributions in binary form must reproduce the above copyright notice,
14 * this list of conditions and the following disclaimer in the documentation
15 * and/or other materials provided with the distribution.
16 *
17 * + Neither the name of Genjava-Core nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
22 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
25 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
32 */
33 package com.generationjava.collections;
34
35 import java.util.Iterator;
36 import java.util.ArrayList;
37
38 public class BlockIterator implements Iterator {
39
40 private Iterator iterator;
41 private int size;
42
43 public BlockIterator(int size, Iterator iterator) {
44 this.size = size;
45 this.iterator = iterator;
46 }
47
48 public boolean hasNext() {
49 return this.iterator.hasNext();
50 }
51
52 public Object next() {
53 ArrayList list = new ArrayList(size);
54 int loop = this.size;
55 while( (loop > 0) && (this.iterator.hasNext()) ) {
56 list.add(this.iterator.next());
57 loop--;
58 }
59 return list;
60 }
61
62 public void remove() {
63 //
64 }
65
66 }
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