import commonj.timers.TimerListener; //导入依赖的package包/类
public synchronized Timer schedule(TimerListener listener, Date when) throws IllegalArgumentException,
    IllegalStateException {

    DefaultTimerTask task = new DefaultTimerTask(timerCount++, listener);
    timers.put(timerCount, task);

    // schedule to fire
    timer.schedule(task, when);

    return task;
}
 

import commonj.timers.TimerListener; //导入依赖的package包/类
/**
 * Set the TimerListener to schedule.
 */
public void setTimerListener(TimerListener timerListener) {
	this.timerListener = timerListener;
}
 

import commonj.timers.TimerListener; //导入依赖的package包/类
/**
 * Return the TimerListener to schedule.
 */
public TimerListener getTimerListener() {
	return this.timerListener;
}
 

import commonj.timers.TimerListener; //导入依赖的package包/类
public synchronized Timer scheduleAtFixedRate(TimerListener arg0, Date arg1, long arg2)
    throws IllegalArgumentException, IllegalStateException {
    throw new UnsupportedOperationException();
}
 

import commonj.timers.TimerListener; //导入依赖的package包/类
public DefaultTimerTask(int id, commonj.timers.TimerListener listener) {
    this.id = id;
    this.listener = listener;
}
 

import commonj.timers.TimerListener; //导入依赖的package包/类
public commonj.timers.TimerListener getTimerListener() {
    return listener;
}
 

import commonj.timers.TimerListener; //导入依赖的package包/类
/**
 * Create a new ScheduledTimerListener.
 * @param timerListener the TimerListener to schedule
 * @param delay the delay before starting the task for the first time (ms)
 * @param period the period between repeated task executions (ms)
 * @param fixedRate whether to schedule as fixed-rate execution
 */
public ScheduledTimerListener(TimerListener timerListener, long delay, long period, boolean fixedRate) {
	this.timerListener = timerListener;
	this.delay = delay;
	this.period = period;
	this.fixedRate = fixedRate;
}