/* * Timer.java * Copyright (C) 1999 dog <dog@dog.net.uk> *  * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. *  * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU * Lesser General Public License for more details. *  * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA *  * You may retrieve the latest version of this library from * http://www.dog.net.uk/knife/ */package dog.util;/** * A timer class that wakes up listeners after a specified number of milliseconds. * * @author dog@dog.net.uk * @version 1.0 */public final class Timer extends Thread {	long time;	long interval = 0;	TimerListener listener;	/**	 * Constructs a timer.	 */	public Timer(TimerListener listener) {		this(listener, 0, false);	}		/**	 * Constructs a timer with the specified interval, and starts it.	 */	public Timer(TimerListener listener, long interval) {		this(listener, interval, true);	}		/**	 * Constructs a timer with the specified interval, indicating whether or not to start it.	 */	public Timer(TimerListener listener, long interval, boolean start) {		this.listener = listener;		this.interval = interval;		time = System.currentTimeMillis();		setDaemon(true);		setPriority(Thread.MIN_PRIORITY);		if (start)			start();	}	// -- Accessor methods --	/**	 * Returns this timer's interval.	 */	public long getInterval() {		return interval;	}	/**	 * Sets this timer's interval.	 */	public void setInterval(long interval) {		this.interval = interval;	}	/**	 * Runs this timer.	 */	public void run() {		boolean interrupt = false;		while (!interrupt) {			synchronized (this) {				try {					wait(interval);				} catch (InterruptedException e) {					interrupt = true;				}				listener.timerFired(new TimerEvent(this, interval));			}		}	}}