| PwdGenerator.java |
1 /**
2 * Copyright (c) 2000-2008 Liferay, Inc. All rights reserved.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to deal
6 * in the Software without restriction, including without limitation the rights
7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 * copies of the Software, and to permit persons to whom the Software is
9 * furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 * SOFTWARE.
21 */
22
23 package com.liferay.util;
24
25 import com.liferay.portal.kernel.util.StringMaker;
26
27 /**
28 * <a href="PwdGenerator.java.html"><b><i>View Source</i></b></a>
29 *
30 * @author Brian Wing Shun Chan
31 *
32 */
33 public class PwdGenerator {
34
35 public static String KEY1 = "0123456789";
36
37 public static String KEY2 = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
38
39 public static String KEY3 = "abcdefghijklmnopqrstuvwxyz";
40
41 public static String getPinNumber() {
42 return _getPassword(KEY1, 4);
43 }
44
45 public static String getPassword() {
46 return getPassword(8);
47 }
48
49 public static String getPassword(int length) {
50 return _getPassword(KEY1 + KEY2 + KEY3, length);
51 }
52
53 public static String getPassword(String key, int length) {
54 return _getPassword(key, length);
55 }
56
57 private static String _getPassword(String key, int length) {
58 StringMaker sm = new StringMaker();
59
60 for (int i = 0; i < length; i++) {
61 sm.append(key.charAt((int)(Math.random() * key.length())));
62 }
63
64 return sm.toString();
65 }
66
67 }