Appender (SLF4J 2.0.1 API)

```
public interface Appender
```
Implement this interface for your own strategies for outputting log statements.

Author:

Ceki Gülcü

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method and Description
`void`	`addFilter(Filter newFilter)` Add a filter to the end of the filter list.
`void`	`clearFilters()` Clear the list of filters by removing all the filters in it.
`void`	`close()` Release any resources allocated within the appender such as file handles, network connections, etc.
`void`	`doAppend(LoggingEvent event)` Log in `Appender` specific way.
`ErrorHandler`	`getErrorHandler()` Returns the `ErrorHandler` for this appender.
`Filter`	`getFilter()` Returns the head Filter.
`Layout`	`getLayout()` Returns this appenders layout.
`String`	`getName()` Get the name of this appender.
`boolean`	`requiresLayout()` Configurators call this method to determine if the appender requires a layout.
`void`	`setErrorHandler(ErrorHandler errorHandler)` Set the `ErrorHandler` for this appender.
`void`	`setLayout(Layout layout)` Set the `Layout` for this appender.
`void`	`setName(String name)` Set the name of this appender.

- Method Detail
  - addFilter
```
void addFilter(Filter newFilter)
```
    Add a filter to the end of the filter list.
    
    Since:
    
    0.9.0
  - getFilter
```
Filter getFilter()
```
    Returns the head Filter. The Filters are organized in a linked list and so all Filters on this Appender are available through the result.
    
    Returns:
    
    the head Filter or null, if no Filters are present
    
    Since:
    
    1.1
  - clearFilters
```
void clearFilters()
```
    Clear the list of filters by removing all the filters in it.
    
    Since:
    
    0.9.0
  - close
```
void close()
```
    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.
    
    Since:
    
    0.8.4
  - doAppend
```
void doAppend(LoggingEvent event)
```
    Log in Appender specific way. When appropriate, Loggers will call the doAppend method of appender implementations in order to log.
  - getName
```
String getName()
```
    Get the name of this appender. The name uniquely identifies the appender.
  - setErrorHandler
```
void setErrorHandler(ErrorHandler errorHandler)
```
    Set the ErrorHandler for this appender.
    
    Since:
    
    0.9.0
  - getErrorHandler
```
ErrorHandler getErrorHandler()
```
    Returns the ErrorHandler for this appender.
    
    Since:
    
    1.1
  - setLayout
```
void setLayout(Layout layout)
```
    Set the Layout for this appender.
    
    Since:
    
    0.8.1
  - getLayout
```
Layout getLayout()
```
    Returns this appenders layout.
    
    Since:
    
    1.1
  - setName
```
void setName(String name)
```
    Set the name of this appender. The name is used by other components to identify this appender.
    
    Since:
    
    0.8.1
  - requiresLayout
```
boolean requiresLayout()
```
    Configurators call this method to determine if the appender requires a layout. If this method returns true, meaning that layout is required, then the configurator will configure a layout using the configuration information at its disposal. If this method returns false, meaning that a layout is not required, then layout configuration will be skipped even if there is available layout configuration information at the disposal of the configurator.
    In the rather exceptional case, where the appender implementation admits a layout but can also work without it, then the appender should return true.
    
    Since:
    
    0.8.4

Interface Appender

Method Summary

Method Detail

addFilter

getFilter

clearFilters

close

doAppend

getName

setErrorHandler

getErrorHandler

setLayout

getLayout

setName

requiresLayout