Log4JLogger (Apache Commons Logging 1.2 API)

java.lang.Object
- org.apache.commons.logging.impl.Log4JLogger

All Implemented Interfaces:

Serializable, Log
```
public class Log4JLogger
extends Object
implements Log, Serializable
```
Implementation of Log that maps directly to a Logger for log4J version 1.2.
Initial configuration of the corresponding Logger instances should be done in the usual manner, as outlined in the Log4J documentation.
The reason this logger is distinct from the 1.3 logger is that in version 1.2 of Log4J:
- class Logger takes Priority parameters not Level parameters.
- class Level extends Priority
Log4J1.3 is expected to change Level so it no longer extends Priority, which is a non-binary-compatible change. The class generated by compiling this code against log4j 1.2 will therefore not run against log4j 1.3.
Version:

$Id: Log4JLogger.java 1448119 2013-02-20 12:28:04Z tn $

See Also:
Serialized Form

Constructor Summary

Constructors
Constructor and Description

Log4JLogger()

Log4JLogger(org.apache.log4j.Logger logger)
For use with a log4j factory.

Log4JLogger(String name)
Base constructor.

Constructors
Constructor and Description
`Log4JLogger()`
`Log4JLogger(org.apache.log4j.Logger logger)` For use with a log4j factory.
`Log4JLogger(String name)` Base constructor.

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`debug(Object message)` Logs a message with `org.apache.log4j.Priority.DEBUG`.
`void`	`debug(Object message, Throwable t)` Logs a message with `org.apache.log4j.Priority.DEBUG`.
`void`	`error(Object message)` Logs a message with `org.apache.log4j.Priority.ERROR`.
`void`	`error(Object message, Throwable t)` Logs a message with `org.apache.log4j.Priority.ERROR`.
`void`	`fatal(Object message)` Logs a message with `org.apache.log4j.Priority.FATAL`.
`void`	`fatal(Object message, Throwable t)` Logs a message with `org.apache.log4j.Priority.FATAL`.
`org.apache.log4j.Logger`	`getLogger()` Return the native Logger instance we are using.
`void`	`info(Object message)` Logs a message with `org.apache.log4j.Priority.INFO`.
`void`	`info(Object message, Throwable t)` Logs a message with `org.apache.log4j.Priority.INFO`.
`boolean`	`isDebugEnabled()` Check whether the Log4j Logger used is enabled for `DEBUG` priority.
`boolean`	`isErrorEnabled()` Check whether the Log4j Logger used is enabled for `ERROR` priority.
`boolean`	`isFatalEnabled()` Check whether the Log4j Logger used is enabled for `FATAL` priority.
`boolean`	`isInfoEnabled()` Check whether the Log4j Logger used is enabled for `INFO` priority.
`boolean`	`isTraceEnabled()` Check whether the Log4j Logger used is enabled for `TRACE` priority.
`boolean`	`isWarnEnabled()` Check whether the Log4j Logger used is enabled for `WARN` priority.
`void`	`trace(Object message)` Logs a message with `org.apache.log4j.Priority.TRACE`.
`void`	`trace(Object message, Throwable t)` Logs a message with `org.apache.log4j.Priority.TRACE`.
`void`	`warn(Object message)` Logs a message with `org.apache.log4j.Priority.WARN`.
`void`	`warn(Object message, Throwable t)` Logs a message with `org.apache.log4j.Priority.WARN`.

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

- Constructor Detail
  - Log4JLogger
```
public Log4JLogger()
```
  - Log4JLogger
```
public Log4JLogger(String name)
```
    Base constructor.
  - Log4JLogger
```
public Log4JLogger(org.apache.log4j.Logger logger)
```
    For use with a log4j factory.
- Method Detail
  - trace
```
public void trace(Object message)
```
    Logs a message with org.apache.log4j.Priority.TRACE. When using a log4j version that does not support the TRACE level, the message will be logged at the DEBUG level.
    
    Specified by:
    
    trace in interface Log
    
    Parameters:
    message - to log
    See Also:
    Log.trace(Object)
  - trace
```
public void trace(Object message,
         Throwable t)
```
    Logs a message with org.apache.log4j.Priority.TRACE. When using a log4j version that does not support the TRACE level, the message will be logged at the DEBUG level.
    
    Specified by:
    
    trace in interface Log
    
    Parameters:
    message - to log
    t - log this cause
    See Also:
    Log.trace(Object, Throwable)
  - debug
```
public void debug(Object message)
```
    Logs a message with org.apache.log4j.Priority.DEBUG.
    
    Specified by:
    
    debug in interface Log
    
    Parameters:
    message - to log
    See Also:
    Log.debug(Object)
  - debug
```
public void debug(Object message,
         Throwable t)
```
    Logs a message with org.apache.log4j.Priority.DEBUG.
    
    Specified by:
    
    debug in interface Log
    
    Parameters:
    message - to log
    t - log this cause
    See Also:
    Log.debug(Object, Throwable)
  - info
```
public void info(Object message)
```
    Logs a message with org.apache.log4j.Priority.INFO.
    
    Specified by:
    
    info in interface Log
    
    Parameters:
    message - to log
    See Also:
    Log.info(Object)
  - info
```
public void info(Object message,
        Throwable t)
```
    Logs a message with org.apache.log4j.Priority.INFO.
    
    Specified by:
    
    info in interface Log
    
    Parameters:
    message - to log
    t - log this cause
    See Also:
    Log.info(Object, Throwable)
  - warn
```
public void warn(Object message)
```
    Logs a message with org.apache.log4j.Priority.WARN.
    
    Specified by:
    
    warn in interface Log
    
    Parameters:
    message - to log
    See Also:
    Log.warn(Object)
  - warn
```
public void warn(Object message,
        Throwable t)
```
    Logs a message with org.apache.log4j.Priority.WARN.
    
    Specified by:
    
    warn in interface Log
    
    Parameters:
    message - to log
    t - log this cause
    See Also:
    Log.warn(Object, Throwable)
  - error
```
public void error(Object message)
```
    Logs a message with org.apache.log4j.Priority.ERROR.
    
    Specified by:
    
    error in interface Log
    
    Parameters:
    message - to log
    See Also:
    Log.error(Object)
  - error
```
public void error(Object message,
         Throwable t)
```
    Logs a message with org.apache.log4j.Priority.ERROR.
    
    Specified by:
    
    error in interface Log
    
    Parameters:
    message - to log
    t - log this cause
    See Also:
    Log.error(Object, Throwable)
  - fatal
```
public void fatal(Object message)
```
    Logs a message with org.apache.log4j.Priority.FATAL.
    
    Specified by:
    
    fatal in interface Log
    
    Parameters:
    message - to log
    See Also:
    Log.fatal(Object)
  - fatal
```
public void fatal(Object message,
         Throwable t)
```
    Logs a message with org.apache.log4j.Priority.FATAL.
    
    Specified by:
    
    fatal in interface Log
    
    Parameters:
    message - to log
    t - log this cause
    See Also:
    Log.fatal(Object, Throwable)
  - getLogger
```
public org.apache.log4j.Logger getLogger()
```
    Return the native Logger instance we are using.
  - isDebugEnabled
```
public boolean isDebugEnabled()
```
    Check whether the Log4j Logger used is enabled for DEBUG priority.
    
    Specified by:
    
    isDebugEnabled in interface Log
    
    Returns:
    true if debug is enabled in the underlying logger.
  - isErrorEnabled
```
public boolean isErrorEnabled()
```
    Check whether the Log4j Logger used is enabled for ERROR priority.
    
    Specified by:
    
    isErrorEnabled in interface Log
    
    Returns:
    true if error is enabled in the underlying logger.
  - isFatalEnabled
```
public boolean isFatalEnabled()
```
    Check whether the Log4j Logger used is enabled for FATAL priority.
    
    Specified by:
    
    isFatalEnabled in interface Log
    
    Returns:
    true if fatal is enabled in the underlying logger.
  - isInfoEnabled
```
public boolean isInfoEnabled()
```
    Check whether the Log4j Logger used is enabled for INFO priority.
    
    Specified by:
    
    isInfoEnabled in interface Log
    
    Returns:
    true if info is enabled in the underlying logger.
  - isTraceEnabled
```
public boolean isTraceEnabled()
```
    Check whether the Log4j Logger used is enabled for TRACE priority. When using a log4j version that does not support the TRACE level, this call will report whether DEBUG is enabled or not.
    
    Specified by:
    
    isTraceEnabled in interface Log
    
    Returns:
    true if trace is enabled in the underlying logger.
  - isWarnEnabled
```
public boolean isWarnEnabled()
```
    Check whether the Log4j Logger used is enabled for WARN priority.
    
    Specified by:
    
    isWarnEnabled in interface Log
    
    Returns:
    true if warn is enabled in the underlying logger.

Class Log4JLogger

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

Log4JLogger

Log4JLogger

Log4JLogger

Method Detail

trace

trace

debug

debug

info

info

warn

warn

error

error

fatal

fatal

getLogger

isDebugEnabled

isErrorEnabled

isFatalEnabled

isInfoEnabled

isTraceEnabled

isWarnEnabled