org.apache.log4j.varia: public class: NullAppender

org.apache.log4j.varia
public class: NullAppender [javadoc | source]

java.lang.Object
   org.apache.log4j.AppenderSkeleton
      org.apache.log4j.varia.NullAppender

All Implemented Interfaces:
OptionHandler, Appender

A NullAppender merely exists, it never outputs a message to any device.

author: Ceki - Gülc¨

Fields inherited from org.apache.log4j.AppenderSkeleton:
layout, name, threshold, errorHandler, headFilter, tailFilter, closed

Constructor:
public NullAppender() { }

Method from org.apache.log4j.varia.NullAppender Summary:
activateOptions, append, close, doAppend, getInstance, requiresLayout

Methods from org.apache.log4j.AppenderSkeleton:
activateOptions, addFilter, append, clearFilters, doAppend, finalize, getErrorHandler, getFilter, getFirstFilter, getLayout, getName, getThreshold, isAsSevereAsThreshold, setErrorHandler, setLayout, setName, setThreshold

Methods from java.lang.Object:
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method from org.apache.log4j.varia.NullAppender Detail:
public void activateOptions() { } There are no options to acticate.
protected void append(LoggingEvent event) { } Does not do anything.
public void close() { }
public void doAppend(LoggingEvent event) { } Does not do anything.
public NullAppender getInstance() { return instance; } Whenever you can, use this method to retreive an instance instead of instantiating a new one with `new`.
public boolean requiresLayout() { return false; } NullAppenders do not need a layout.

Method from org.apache.log4j.varia.NullAppender Detail:

 public  void activateOptions() {

}

There are no options to acticate.

 protected  void append(LoggingEvent event) {

}

Does not do anything.

 public  void close() {

}

 public  void doAppend(LoggingEvent event) {

}

Does not do anything.

 public NullAppender getInstance() {
    return instance;
}

new

 public boolean requiresLayout() {
    return false;
}

NullAppenders do not need a layout.