ucar.unidata.util
Class Poller

java.lang.Object
  ucar.unidata.util.Poller

All Implemented Interfaces:

Runnable

Direct Known Subclasses:

FilePoller

public abstract class Poller
extends Object
implements Runnable

Class to handle polling.

Version:

$Revision: 1.17 $ $Date: 2006/05/05 19:19:36 $

Author:

Metapps development team

Field Summary

static boolean	debug Debug flag
protected long	interval interval for polling (milliseconds)
protected ActionListener	listener listener for polling events
protected boolean	running flag for running

Constructor Summary

Poller(ActionListener listener, long interval)
Create a Poller

Poller(long interval)
Create a Poller

Method Summary

protected abstract void	doPoll() This method does the work.
long	getInterval() Get the polling interval
void	init() Initialize.
void	run() Run the poller
void	stopRunning() Stop polling.

Methods inherited from class java.lang.Object

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

Field Detail

debug

public static boolean debug

Debug flag

listener

protected ActionListener listener

listener for polling events

interval

protected long interval

interval for polling (milliseconds)

running

protected boolean running

flag for running

Constructor Detail

Poller

public Poller(long interval)

Create a Poller

Parameters:

interval - polling interval

Poller

public Poller(ActionListener listener,
              long interval)

Create a Poller

Parameters:

listener - listener for events

interval - polling interval

Method Detail

init

public void init()

Initialize.

run

public void run()

Run the poller

Specified by:

run in interface Runnable

doPoll

protected abstract void doPoll()

This method does the work. Subclasses implement what they want.

stopRunning

public void stopRunning()

Stop polling.

getInterval

public long getInterval()

Get the polling interval

Returns:

the interval (milliseconds)