2 * jSite2 - IdGenerator.java -
3 * Copyright © 2008 David Roden
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 package net.pterodactylus.jsite.util;
22 import java.util.Random;
25 * A generator for internal IDs.
27 * @author David ‘Bombe’ Roden <bombe@freenetproject.org>
29 public class IdGenerator {
31 /** The default length of IDs (in bytes before conversion to a string). */
32 public static final int DEFAULT_LENGTH = 20;
34 /** The RNG used to created IDs. */
35 private static Random random = new Random();
38 * Generates a new random ID, consisting of {@link #DEFAULT_LENGTH} random
43 public static byte[] generateId() {
44 return generateId(DEFAULT_LENGTH);
48 * Generates a new random ID, consisting of <code>length</code> random
52 * The length of the ID in bytes before conversion to a string
55 public static byte[] generateId(int length) {
56 byte[] idBytes = new byte[length];
57 random.nextBytes(idBytes);