1 /*
2 * $Id: NumberList.java [29-May-2004]
3 *
4 * Copyright (c) 2004, Ben Fortuna
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * o Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 *
14 * o Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * o Neither the name of Ben Fortuna nor the names of any other contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
25 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
26 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
27 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
28 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
29 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
30 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
31 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
32 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 */
34 package net.fortuna.ical4j.model;
35
36 import java.util.ArrayList;
37 import java.util.Iterator;
38 import java.util.List;
39 import java.util.StringTokenizer;
40
41 /***
42 * Defines a list of numbers.
43 * @author benfortuna
44 */
45 public class NumberList {
46
47 private List numbers;
48
49 /***
50 * Constructor.
51 */
52 public NumberList() {
53 numbers = new ArrayList();
54 }
55
56 /***
57 * Constructor.
58 * @param aString a string representation of a number list
59 */
60 public NumberList(final String aString) {
61 numbers = new ArrayList();
62
63 for (StringTokenizer t = new StringTokenizer(aString, ","); t.hasMoreTokens();) {
64 numbers.add(new Integer(t.nextToken()));
65 }
66 }
67
68 /***
69 * @param aNumber a number to add to the list
70 * @return
71 */
72 public final boolean add(final Integer aNumber) {
73 return numbers.add(aNumber);
74 }
75
76 /***
77 * @return
78 */
79 public final boolean isEmpty() {
80 return numbers.isEmpty();
81 }
82
83 /***
84 * @return
85 */
86 public final Iterator iterator() {
87 return numbers.iterator();
88 }
89
90 /***
91 * @param aNumber a number to remove from the list
92 * @return
93 */
94 public final boolean remove(final Integer aNumber) {
95 return numbers.remove(aNumber);
96 }
97
98 /***
99 * @return
100 */
101 public final int size() {
102 return numbers.size();
103 }
104
105
106 /***
107 * @see java.lang.Object#toString()
108 */
109 public final String toString() {
110 StringBuffer b = new StringBuffer();
111
112 for (Iterator i = iterator(); i.hasNext();) {
113 b.append(i.next());
114
115 if (i.hasNext()) {
116 b.append(',');
117 }
118 }
119
120 return b.toString();
121 }
122 }