public abstract class

FileWatchdog

extends Thread

java.lang.Object
↳	java.lang.Thread
	↳	org.apache.log4j.helpers.FileWatchdog

Class Overview

Check every now and then that a certain file has not changed. If it has, then call the doOnChange() method.

Summary

Constants
long	DEFAULT_DELAY	The default delay between every file modification check, set to 60 seconds.

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Inherited Constants

From class java.lang.Thread

Fields
protected long	delay	The delay to observe between every check.
protected String	filename	The name of the file to observe for changes.

Protected Constructors
	FileWatchdog(String filename)

Public Methods
void	run()
void	setDelay(long delay) Set the delay to observe between each check of the file changes.

Protected Methods
void	checkAndConfigure()
abstract void	doOnChange()

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Inherited Methods

From class java.lang.Thread

static int	activeCount()
final void	checkAccess()
Object	clone()
int	countStackFrames()
static Thread	currentThread()
void	destroy()
static void	dumpStack()
static int	enumerate(Thread[] arg0)
static Map<Thread, StackTraceElement[]>	getAllStackTraces()
ClassLoader	getContextClassLoader()
static Thread.UncaughtExceptionHandler	getDefaultUncaughtExceptionHandler()
long	getId()
final String	getName()
final int	getPriority()
StackTraceElement[]	getStackTrace()
Thread.State	getState()
final ThreadGroup	getThreadGroup()
Thread.UncaughtExceptionHandler	getUncaughtExceptionHandler()
static boolean	holdsLock(Object arg0)
void	interrupt()
static boolean	interrupted()
final boolean	isAlive()
final boolean	isDaemon()
boolean	isInterrupted()
final void	join()
synchronized final void	join(long arg0, int arg1)
synchronized final void	join(long arg0)
final void	resume()
void	run()
void	setContextClassLoader(ClassLoader arg0)
final void	setDaemon(boolean arg0)
static void	setDefaultUncaughtExceptionHandler(Thread.UncaughtExceptionHandler arg0)
final void	setName(String arg0)
final void	setPriority(int arg0)
void	setUncaughtExceptionHandler(Thread.UncaughtExceptionHandler arg0)
static void	sleep(long arg0, int arg1)
static void	sleep(long arg0)
synchronized void	start()
synchronized final void	stop(Throwable arg0)
final void	stop()
final void	suspend()
String	toString()
static void	yield()

From class java.lang.Object

From interface java.lang.Runnable

Constants

public static final long DEFAULT_DELAY

The default delay between every file modification check, set to 60 seconds.

Constant Value: 60000 (0x000000000000ea60)

Fields

protected long delay

The delay to observe between every check. By default set DEFAULT_DELAY.

protected String filename

The name of the file to observe for changes.

Protected Constructors

protected FileWatchdog (String filename)

Public Methods

public void run ()

public void setDelay (long delay)

Set the delay to observe between each check of the file changes.

Classes