NOPLogger

java.lang.Object
- org.slf4j.helpers.MarkerIgnoringBase
- - org.slf4j.helpers.NOPLogger

All Implemented Interfaces:

Serializable, Logger
```
public class NOPLogger
extends MarkerIgnoringBase
```
A direct NOP (no operation) implementation of Logger.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
`protected String`	`name`
`static NOPLogger`	`NOP_LOGGER` The unique instance of NOPLogger.

Fields inherited from interface org.slf4j.Logger
ROOT_LOGGER_NAME

Constructor Summary

Constructors

Modifier	Constructor and Description
`protected`	`NOPLogger()` There is no point in creating multiple instances of NOPLOgger, except by derived classes, hence the protected access for the constructor.

Method Summary

All Methods

Instance Methods

Concrete Methods
Modifier and Type	Method and Description
`void`	`debug(String msg)` A NOP implementation.
`void`	`debug(String format, Object... argArray)` A NOP implementation.
`void`	`debug(String format, Object arg)` A NOP implementation.
`void`	`debug(String format, Object arg1, Object arg2)` A NOP implementation.
`void`	`debug(String msg, Throwable t)` A NOP implementation.
`void`	`error(String msg)` A NOP implementation.
`void`	`error(String format, Object... argArray)` A NOP implementation.
`void`	`error(String format, Object arg1)` A NOP implementation.
`void`	`error(String format, Object arg1, Object arg2)` A NOP implementation.
`void`	`error(String msg, Throwable t)` A NOP implementation.
`String`	`getName()` Always returns the string value "NOP".
`void`	`info(String msg)` A NOP implementation.
`void`	`info(String format, Object... argArray)` A NOP implementation.
`void`	`info(String format, Object arg1)` A NOP implementation.
`void`	`info(String format, Object arg1, Object arg2)` A NOP implementation.
`void`	`info(String msg, Throwable t)` A NOP implementation.
`boolean`	`isDebugEnabled()` Always returns false.
`boolean`	`isErrorEnabled()` A NOP implementation.
`boolean`	`isInfoEnabled()` Always returns false.
`boolean`	`isTraceEnabled()` Always returns false.
`boolean`	`isWarnEnabled()` Always returns false.
`protected Object`	`readResolve()` Replace this instance with a homonymous (same name) logger returned by LoggerFactory.
`void`	`trace(String msg)` A NOP implementation.
`void`	`trace(String format, Object... argArray)` A NOP implementation.
`void`	`trace(String format, Object arg)` A NOP implementation.
`void`	`trace(String format, Object arg1, Object arg2)` A NOP implementation.
`void`	`trace(String msg, Throwable t)` A NOP implementation.
`void`	`warn(String msg)` A NOP implementation.
`void`	`warn(String format, Object... argArray)` A NOP implementation.
`void`	`warn(String format, Object arg1)` A NOP implementation.
`void`	`warn(String format, Object arg1, Object arg2)` A NOP implementation.
`void`	`warn(String msg, Throwable t)` A NOP implementation.

Methods inherited from class org.slf4j.helpers.MarkerIgnoringBase
debug, debug, debug, debug, debug, error, error, error, error, error, info, info, info, info, info, isDebugEnabled, isErrorEnabled, isInfoEnabled, isTraceEnabled, isWarnEnabled, toString, trace, trace, trace, trace, trace, warn, warn, warn, warn, warn

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - NOP_LOGGER
```
public static final NOPLogger NOP_LOGGER
```
    The unique instance of NOPLogger.
  - name
```
protected String name
```
- Constructor Detail
  - NOPLogger
```
protected NOPLogger()
```
    There is no point in creating multiple instances of NOPLOgger, except by derived classes, hence the protected access for the constructor.
- Method Detail
  - getName
```
public String getName()
```
    Always returns the string value "NOP".
    
    Specified by:
    
    getName in interface Logger
    
    Returns:
    
    name of this logger instance
  - isTraceEnabled
```
public final boolean isTraceEnabled()
```
    Always returns false.
    
    Returns:
    
    always false
  - trace
```
public final void trace(String msg)
```
    A NOP implementation.
    
    Parameters:
    
    msg - the message string to be logged
  - trace
```
public final void trace(String format,
                        Object arg)
```
    A NOP implementation.
    
    Parameters:
    
    format - the format string
    
    arg - the argument
  - trace
```
public final void trace(String format,
                        Object arg1,
                        Object arg2)
```
    A NOP implementation.
    
    Parameters:
    
    format - the format string
    
    arg1 - the first argument
    
    arg2 - the second argument
  - trace
```
public final void trace(String format,
                        Object... argArray)
```
    A NOP implementation.
    
    Parameters:
    
    format - the format string
    
    argArray - a list of 3 or more arguments
  - trace
```
public final void trace(String msg,
                        Throwable t)
```
    A NOP implementation.
    
    Parameters:
    
    msg - the message accompanying the exception
    
    t - the exception (throwable) to log
  - isDebugEnabled
```
public final boolean isDebugEnabled()
```
    Always returns false.
    
    Returns:
    
    always false
  - debug
```
public final void debug(String msg)
```
    A NOP implementation.
    
    Parameters:
    
    msg - the message string to be logged
  - debug
```
public final void debug(String format,
                        Object arg)
```
    A NOP implementation.
    
    Parameters:
    
    format - the format string
    
    arg - the argument
  - debug
```
public final void debug(String format,
                        Object arg1,
                        Object arg2)
```
    A NOP implementation.
    
    Parameters:
    
    format - the format string
    
    arg1 - the first argument
    
    arg2 - the second argument
  - debug
```
public final void debug(String format,
                        Object... argArray)
```
    A NOP implementation.
    
    Parameters:
    
    format - the format string
    
    argArray - a list of 3 or more arguments
  - debug
```
public final void debug(String msg,
                        Throwable t)
```
    A NOP implementation.
    
    Parameters:
    
    msg - the message accompanying the exception
    
    t - the exception (throwable) to log
  - isInfoEnabled
```
public final boolean isInfoEnabled()
```
    Always returns false.
    
    Returns:
    
    always false
  - info
```
public final void info(String msg)
```
    A NOP implementation.
    
    Parameters:
    
    msg - the message string to be logged
  - info
```
public final void info(String format,
                       Object arg1)
```
    A NOP implementation.
    
    Parameters:
    
    format - the format string
    
    arg1 - the argument
  - info
```
public final void info(String format,
                       Object arg1,
                       Object arg2)
```
    A NOP implementation.
    
    Parameters:
    
    format - the format string
    
    arg1 - the first argument
    
    arg2 - the second argument
  - info
```
public final void info(String format,
                       Object... argArray)
```
    A NOP implementation.
    
    Parameters:
    
    format - the format string
    
    argArray - a list of 3 or more arguments
  - info
```
public final void info(String msg,
                       Throwable t)
```
    A NOP implementation.
    
    Parameters:
    
    msg - the message accompanying the exception
    
    t - the exception (throwable) to log
  - isWarnEnabled
```
public final boolean isWarnEnabled()
```
    Always returns false.
    
    Returns:
    
    always false
  - warn
```
public final void warn(String msg)
```
    A NOP implementation.
    
    Parameters:
    
    msg - the message string to be logged
  - warn
```
public final void warn(String format,
                       Object arg1)
```
    A NOP implementation.
    
    Parameters:
    
    format - the format string
    
    arg1 - the argument
  - warn
```
public final void warn(String format,
                       Object arg1,
                       Object arg2)
```
    A NOP implementation.
    
    Parameters:
    
    format - the format string
    
    arg1 - the first argument
    
    arg2 - the second argument
  - warn
```
public final void warn(String format,
                       Object... argArray)
```
    A NOP implementation.
    
    Parameters:
    
    format - the format string
    
    argArray - a list of 3 or more arguments
  - warn
```
public final void warn(String msg,
                       Throwable t)
```
    A NOP implementation.
    
    Parameters:
    
    msg - the message accompanying the exception
    
    t - the exception (throwable) to log
  - isErrorEnabled
```
public final boolean isErrorEnabled()
```
    A NOP implementation.
    
    Returns:
    
    True if this Logger is enabled for the ERROR level, false otherwise.
  - error
```
public final void error(String msg)
```
    A NOP implementation.
    
    Parameters:
    
    msg - the message string to be logged
  - error
```
public final void error(String format,
                        Object arg1)
```
    A NOP implementation.
    
    Parameters:
    
    format - the format string
    
    arg1 - the argument
  - error
```
public final void error(String format,
                        Object arg1,
                        Object arg2)
```
    A NOP implementation.
    
    Parameters:
    
    format - the format string
    
    arg1 - the first argument
    
    arg2 - the second argument
  - error
```
public final void error(String format,
                        Object... argArray)
```
    A NOP implementation.
    
    Parameters:
    
    format - the format string
    
    argArray - a list of 3 or more arguments
  - error
```
public final void error(String msg,
                        Throwable t)
```
    A NOP implementation.
    
    Parameters:
    
    msg - the message accompanying the exception
    
    t - the exception (throwable) to log
  - readResolve
```
protected Object readResolve()
                      throws ObjectStreamException
```
    Replace this instance with a homonymous (same name) logger returned by LoggerFactory. Note that this method is only called during deserialization.
    This approach will work well if the desired ILoggerFactory is the one references by LoggerFactory. However, if the user manages its logger hierarchy through a different (non-static) mechanism, e.g. dependency injection, then this approach would be mostly counterproductive.
    
    Returns:
    
    logger with same name as returned by LoggerFactory
    
    Throws:
    
    ObjectStreamException -

Class NOPLogger

Field Summary

Fields

Fields inherited from interface org.slf4j.Logger

Constructor Summary

Constructors

Method Summary

Methods inherited from class org.slf4j.helpers.MarkerIgnoringBase

Methods inherited from class java.lang.Object

Field Detail

NOP_LOGGER

name

Constructor Detail

NOPLogger

Method Detail

getName

isTraceEnabled

trace

trace

trace

trace

trace

isDebugEnabled

debug

debug

debug

debug

debug

isInfoEnabled

info

info

info

info

info

isWarnEnabled

warn

warn

warn

warn

warn

isErrorEnabled

error

error

error

error

error

readResolve