001/*
002 * jPOS Project [http://jpos.org]
003 * Copyright (C) 2000-2026 jPOS Software SRL
004 *
005 * This program is free software: you can redistribute it and/or modify
006 * it under the terms of the GNU Affero General Public License as
007 * published by the Free Software Foundation, either version 3 of the
008 * License, or (at your option) any later version.
009 *
010 * This program is distributed in the hope that it will be useful,
011 * but WITHOUT ANY WARRANTY; without even the implied warranty of
012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
013 * GNU Affero General Public License for more details.
014 *
015 * You should have received a copy of the GNU Affero General Public License
016 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
017 */
018
019package org.jpos.util;
020
021import java.util.Timer;
022
023/**
024 * Timer accesor singleton
025 * @author Alejandro P. Revilla
026 * @version $Id$
027 */
028
029public class DefaultTimer {
030    private static volatile Timer defaultTimer = null;
031
032    private DefaultTimer() { }
033
034    /**
035     * Returns the shared daemon {@link Timer} instance, creating it lazily if needed.
036     * @return the default timer
037     */
038    public static Timer getTimer() {
039        if (defaultTimer == null) {
040            synchronized (DefaultTimer.class) {
041                if (defaultTimer == null) 
042                    defaultTimer = new Timer(true);
043            }
044        }
045        return defaultTimer;
046    }
047}