org.apache.log4j.varia
Class NullAppender
java.lang.Object
org.apache.log4j.spi.ComponentBase
org.apache.log4j.AppenderSkeleton
org.apache.log4j.varia.NullAppender
- All Implemented Interfaces:
- Appender, Component, OptionHandler
- public class NullAppender
- extends AppenderSkeleton
A NullAppender merely exists, it never outputs a message to any
device.
- Author:
- Ceki Gülc¨
Method Summary |
protected void |
append(LoggingEvent event)
Does not do anything. |
void |
close()
Release any resources allocated within the appender such as file handles,
network connections, etc.
|
void |
doAppend(LoggingEvent event)
Does not do anything. |
static NullAppender |
getInstance()
Whenever you can, use this method to retreive an instance instead
of instantiating a new one with new . |
Methods inherited from class org.apache.log4j.AppenderSkeleton |
activateOptions, addFilter, clearFilters, finalize, getErrorHandler, getFilter, getFirstFilter, getLayout, getName, getThreshold, isActive, isAsSevereAsThreshold, isClosed, setErrorHandler, setLayout, setName, setThreshold |
NullAppender
public NullAppender()
getInstance
public static NullAppender getInstance()
- Whenever you can, use this method to retreive an instance instead
of instantiating a new one with
new
.
close
public void close()
- Description copied from interface:
Appender
- Release any resources allocated within the appender such as file handles,
network connections, etc.
It is a programming error to append to a closed appender.
doAppend
public void doAppend(LoggingEvent event)
- Does not do anything.
- Specified by:
doAppend
in interface Appender
- Overrides:
doAppend
in class AppenderSkeleton
append
protected void append(LoggingEvent event)
- Does not do anything.
- Specified by:
append
in class AppenderSkeleton
Copyright 2000-2005 Apache Software Foundation.