nl.justobjects.toolkit.sys
Class Timer

java.lang.Object
  |
  +--nl.justobjects.toolkit.sys.Timer

All Implemented Interfaces:

java.lang.Runnable

public class Timer

extends java.lang.Object

implements java.lang.Runnable

Interval timer thread with callback to client.

Purpose
It calls the tick method in the TimerCallback interface after a fixed number of milliseconds (indicated by the interval variable). It measures the amount of time spent in the tick method and adjusts for it.

Implementation

Examples
To start up a timer with this class, create it with a callback and the number of milliseconds in the interval then call the start method:

	Timer timer = new Timer(this, 2000);	// 2 second interval
	timer.start();

 

$Source: /var/cvs/justobjects/toolkit/src/nl/justobjects/toolkit/sys/Timer.java,v $

Since:

$Date: 2003/01/06 00:23:49 $

Version:

$Revision: 1.5 $

Author:

$Author: just $ - Just van den Broecke - Just Objects ©

See Also:

TimerCallback

Field Summary

protected TimerCallback	callback The callback interface containing the tick method
protected long	interval The number of milliseconds in the interval
(package private) static int	num
protected java.lang.Thread	timerThread

Constructor Summary

Timer()

Timer(long interval)

Timer(TimerCallback callback)

Timer(TimerCallback callback, long interval)

Method Summary

TimerCallback	getCallback() returns the callback interface
long	getInterval() returns the number of milliseconds in the interval
void	run()
void	setCallback(TimerCallback callback) changes the callback interface
void	setInterval(long newInterval) sets the number of milliseconds in the interval
void	start()
void	stop()

Methods inherited from class java.lang.Object

, clone, equals, finalize, getClass, hashCode, notify, notifyAll, registerNatives, toString, wait, wait, wait

Field Detail

num

static int num

timerThread

protected java.lang.Thread timerThread

interval

protected long interval

The number of milliseconds in the interval

callback

protected TimerCallback callback

The callback interface containing the tick method

Constructor Detail

Timer

public Timer()

Timer

public Timer(TimerCallback callback)

Timer

public Timer(long interval)

Timer

public Timer(TimerCallback callback,
             long interval)

Method Detail

getInterval

public long getInterval()

returns the number of milliseconds in the interval

setInterval

public void setInterval(long newInterval)

sets the number of milliseconds in the interval

Parameters:

newInterval - the new number of milliseconds

getCallback

public TimerCallback getCallback()

returns the callback interface

setCallback

public void setCallback(TimerCallback callback)

changes the callback interface

Parameters:

callback - the new callback

start

public void start()

stop

public void stop()

run

public void run()

Specified by:

run in interface java.lang.Runnable