).
The output includes the relative time in milliseconds, thread
name, the level, logger name, and the message followed by the line
separator for the host. In log4j terms it amounts to the "%r [%t]
%level %logger - %m%n" pattern. *
Sample output follows.
176 [main] INFO examples.Sort - Populating an array of 2 elements in reverse order.
225 [main] INFO examples.SortAlgo - Entered the sort method.
304 [main] INFO examples.SortAlgo - Dump of interger array:
317 [main] INFO examples.SortAlgo - Element [0] = 0
331 [main] INFO examples.SortAlgo - Element [1] = 1
343 [main] INFO examples.Sort - The next log statement should be an error message.
346 [main] ERROR examples.SortAlgo - Tried to dump an uninitialized array.
at org.log4j.examples.SortAlgo.dump(SortAlgo.java:58)
at org.log4j.examples.Sort.main(Sort.java:64)
467 [main] INFO examples.Sort - Exiting main method.
- Author:
- Ceki Gülcü
Method Summary |
void |
debug(Marker marker,
java.lang.String msg)
Log a message with the specific Marker at the DEBUG level. |
void |
debug(Marker marker,
java.lang.String format,
java.lang.Object arg)
This method is similar to debug(String, Object) method except that the
marker data is also taken into consideration. |
void |
debug(Marker marker,
java.lang.String format,
java.lang.Object arg1,
java.lang.Object arg2)
This method is similar to debug(String, Object, Object)
method except that the marker data is also taken into
consideration. |
void |
debug(Marker marker,
java.lang.String msg,
java.lang.Throwable t)
This method is similar to debug(String, Throwable) method except that the
marker data is also taken into consideration. |
void |
debug(java.lang.String msg)
A NOP implementation, as this logger is permanently disabled for the DEBUG
level. |
void |
debug(java.lang.String format,
java.lang.Object param1)
A NOP implementation, as this logger is permanently disabled for the DEBUG
level. |
void |
debug(java.lang.String format,
java.lang.Object[] argArray)
Log a message at the DEBUG level according to the specified format
and arguments.
|
void |
debug(java.lang.String format,
java.lang.Object param1,
java.lang.Object param2)
A NOP implementation, as this logger is permanently disabled for the DEBUG
level. |
void |
debug(java.lang.String msg,
java.lang.Throwable t)
A NOP implementation, as this logger is permanently disabled for the DEBUG
level. |
void |
error(Marker marker,
java.lang.String msg)
Log a message with the specific Marker at the ERROR level. |
void |
error(Marker marker,
java.lang.String format,
java.lang.Object arg)
This method is similar to error(String, Object) method except that the
marker data is also taken into consideration. |
void |
error(Marker marker,
java.lang.String format,
java.lang.Object arg1,
java.lang.Object arg2)
This method is similar to error(String, Object, Object)
method except that the marker data is also taken into
consideration. |
void |
error(Marker marker,
java.lang.String msg,
java.lang.Throwable t)
This method is similar to error(String, Throwable)
method except that the marker data is also taken into
consideration. |
void |
error(java.lang.String msg)
A simple implementation which always logs messages of level ERROR acoording
to the format outlined above. |
void |
error(java.lang.String format,
java.lang.Object arg)
Perform single parameter substituion before logging the message of level
ERROR according to the format outlined above. |
void |
error(java.lang.String format,
java.lang.Object[] argArray)
Perform double parameter substituion before logging the message of level
WARN according to the format outlined above. |
void |
error(java.lang.String format,
java.lang.Object arg1,
java.lang.Object arg2)
Perform double parameter substituion before logging the message of level
ERROR according to the format outlined above. |
void |
error(java.lang.String msg,
java.lang.Throwable t)
Log a message of level ERROR, including an exception. |
java.lang.String |
getName()
Return the name of this Logger instance. |
void |
info(Marker marker,
java.lang.String msg)
Log a message with the specific Marker at the INFO level. |
void |
info(Marker marker,
java.lang.String format,
java.lang.Object arg)
This method is similar to info(String, Object) method except that the
marker data is also taken into consideration. |
void |
info(Marker marker,
java.lang.String format,
java.lang.Object arg1,
java.lang.Object arg2)
This method is similar to info(String, Object, Object)
method except that the marker data is also taken into
consideration. |
void |
info(Marker marker,
java.lang.String msg,
java.lang.Throwable t)
This method is similar to info(String, Throwable) method
except that the marker data is also taken into consideration. |
void |
info(java.lang.String msg)
A simple implementation which always logs messages of level INFO according
to the format outlined above. |
void |
info(java.lang.String format,
java.lang.Object arg)
Perform single parameter substituion before logging the message of level
INFO according to the format outlined above. |
void |
info(java.lang.String format,
java.lang.Object[] argArray)
Perform double parameter substituion before logging the message of level
INFO according to the format outlined above. |
void |
info(java.lang.String format,
java.lang.Object arg1,
java.lang.Object arg2)
Perform double parameter substituion before logging the message of level
INFO according to the format outlined above. |
void |
info(java.lang.String msg,
java.lang.Throwable t)
Log a message of level INFO, including an exception. |
boolean |
isDebugEnabled()
Always returns false. |
boolean |
isDebugEnabled(Marker marker)
Always returns false. |
boolean |
isErrorEnabled()
Always returns true. |
boolean |
isErrorEnabled(Marker marker)
Always returns true. |
boolean |
isInfoEnabled()
Always returns true. |
boolean |
isInfoEnabled(Marker marker)
Always returns true. |
boolean |
isWarnEnabled()
Always returns true. |
boolean |
isWarnEnabled(Marker marker)
Always returns true. |
void |
warn(Marker marker,
java.lang.String msg)
Log a message with the specific Marker at the WARN level. |
void |
warn(Marker marker,
java.lang.String format,
java.lang.Object arg)
This method is similar to warn(String, Object) method except that the
marker data is also taken into consideration. |
void |
warn(Marker marker,
java.lang.String format,
java.lang.Object arg1,
java.lang.Object arg2)
This method is similar to warn(String, Object, Object)
method except that the marker data is also taken into
consideration. |
void |
warn(Marker marker,
java.lang.String msg,
java.lang.Throwable t)
This method is similar to warn(String, Throwable) method
except that the marker data is also taken into consideration. |
void |
warn(java.lang.String msg)
A simple implementation which always logs messages of level WARN according
to the format outlined above. |
void |
warn(java.lang.String format,
java.lang.Object arg)
Perform single parameter substituion before logging the message of level
WARN according to the format outlined above. |
void |
warn(java.lang.String format,
java.lang.Object[] argArray)
Perform double parameter substituion before logging the message of level
WARN according to the format outlined above. |
void |
warn(java.lang.String format,
java.lang.Object arg1,
java.lang.Object arg2)
Perform double parameter substituion before logging the message of level
WARN according to the format outlined above. |
void |
warn(java.lang.String msg,
java.lang.Throwable t)
Log a message of level WARN, including an exception. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
LINE_SEPARATOR
public static final java.lang.String LINE_SEPARATOR
getName
public java.lang.String getName()
- Description copied from interface:
Logger
- Return the name of this
Logger
instance.
- Specified by:
getName
in interface Logger
isDebugEnabled
public boolean isDebugEnabled()
- Always returns false.
- Specified by:
isDebugEnabled
in interface Logger
- Returns:
- always false
isDebugEnabled
public boolean isDebugEnabled(Marker marker)
- Always returns false.
- Specified by:
isDebugEnabled
in interface MarkingLogger
- Parameters:
marker
- The marker data to take into consideration
- Returns:
- always false
debug
public void debug(java.lang.String msg)
- A NOP implementation, as this logger is permanently disabled for the DEBUG
level.
- Specified by:
debug
in interface Logger
- Parameters:
msg
- the message string to be logged
debug
public void debug(java.lang.String format,
java.lang.Object param1)
- A NOP implementation, as this logger is permanently disabled for the DEBUG
level.
- Specified by:
debug
in interface Logger
- Parameters:
format
- the format stringparam1
- the argument
debug
public void debug(java.lang.String format,
java.lang.Object param1,
java.lang.Object param2)
- A NOP implementation, as this logger is permanently disabled for the DEBUG
level.
- Specified by:
debug
in interface Logger
- Parameters:
format
- the format stringparam1
- the first argumentparam2
- the second argument
debug
public void debug(java.lang.String format,
java.lang.Object[] argArray)
- Description copied from interface:
Logger
- Log a message at the DEBUG level according to the specified format
and arguments.
This form avoids superfluous object creation when the logger
is disabled for the DEBUG level.
- Specified by:
debug
in interface Logger
- Parameters:
format
- the format stringargArray
- an array of arguments
debug
public void debug(java.lang.String msg,
java.lang.Throwable t)
- A NOP implementation, as this logger is permanently disabled for the DEBUG
level.
- Specified by:
debug
in interface Logger
- Parameters:
msg
- the message accompanying the exceptiont
- the exception (throwable) to log
debug
public void debug(Marker marker,
java.lang.String msg)
- Description copied from interface:
MarkingLogger
- Log a message with the specific Marker at the DEBUG level.
- Specified by:
debug
in interface MarkingLogger
- Parameters:
marker
- the marker data specific to this log statementmsg
- the message string to be logged
debug
public void debug(Marker marker,
java.lang.String format,
java.lang.Object arg)
- Description copied from interface:
MarkingLogger
- This method is similar to
Logger.debug(String, Object)
method except that the
marker data is also taken into consideration.
- Specified by:
debug
in interface MarkingLogger
- Parameters:
marker
- the marker data specific to this log statementformat
- the format stringarg
- the argument
debug
public void debug(Marker marker,
java.lang.String format,
java.lang.Object arg1,
java.lang.Object arg2)
- Description copied from interface:
MarkingLogger
- This method is similar to
Logger.debug(String, Object, Object)
method except that the marker data is also taken into
consideration.
- Specified by:
debug
in interface MarkingLogger
- Parameters:
marker
- the marker data specific to this log statementformat
- the format stringarg1
- the first argumentarg2
- the second argument
debug
public void debug(Marker marker,
java.lang.String msg,
java.lang.Throwable t)
- Description copied from interface:
MarkingLogger
- This method is similar to
Logger.debug(String, Throwable)
method except that the
marker data is also taken into consideration.
- Specified by:
debug
in interface MarkingLogger
- Parameters:
marker
- the marker data specific to this log statementmsg
- the message accompanying the exceptiont
- the exception (throwable) to log
isInfoEnabled
public boolean isInfoEnabled()
- Always returns true.
- Specified by:
isInfoEnabled
in interface Logger
- Returns:
- True if this Logger is enabled for the INFO level,
false otherwise.
isInfoEnabled
public boolean isInfoEnabled(Marker marker)
- Always returns true.
- Specified by:
isInfoEnabled
in interface MarkingLogger
- Parameters:
marker
- The marker data to take into consideration
info
public void info(java.lang.String msg)
- A simple implementation which always logs messages of level INFO according
to the format outlined above.
- Specified by:
info
in interface Logger
- Parameters:
msg
- the message string to be logged
info
public void info(java.lang.String format,
java.lang.Object arg)
- Perform single parameter substituion before logging the message of level
INFO according to the format outlined above.
- Specified by:
info
in interface Logger
- Parameters:
format
- the format stringarg
- the argument
info
public void info(java.lang.String format,
java.lang.Object arg1,
java.lang.Object arg2)
- Perform double parameter substituion before logging the message of level
INFO according to the format outlined above.
- Specified by:
info
in interface Logger
- Parameters:
format
- the format stringarg1
- the first argumentarg2
- the second argument
info
public void info(java.lang.String format,
java.lang.Object[] argArray)
- Perform double parameter substituion before logging the message of level
INFO according to the format outlined above.
- Specified by:
info
in interface Logger
- Parameters:
format
- the format stringargArray
- an array of arguments
info
public void info(java.lang.String msg,
java.lang.Throwable t)
- Log a message of level INFO, including an exception.
- Specified by:
info
in interface Logger
- Parameters:
msg
- the message accompanying the exceptiont
- the exception (throwable) to log
info
public void info(Marker marker,
java.lang.String msg)
- Description copied from interface:
MarkingLogger
- Log a message with the specific Marker at the INFO level.
- Specified by:
info
in interface MarkingLogger
- Parameters:
marker
- The marker specific to this log statementmsg
- the message string to be logged
info
public void info(Marker marker,
java.lang.String format,
java.lang.Object arg)
- Description copied from interface:
MarkingLogger
- This method is similar to
Logger.info(String, Object)
method except that the
marker data is also taken into consideration.
- Specified by:
info
in interface MarkingLogger
- Parameters:
marker
- the marker data specific to this log statementformat
- the format stringarg
- the argument
info
public void info(Marker marker,
java.lang.String format,
java.lang.Object arg1,
java.lang.Object arg2)
- Description copied from interface:
MarkingLogger
- This method is similar to
Logger.info(String, Object, Object)
method except that the marker data is also taken into
consideration.
- Specified by:
info
in interface MarkingLogger
- Parameters:
marker
- the marker data specific to this log statementformat
- the format stringarg1
- the first argumentarg2
- the second argument
info
public void info(Marker marker,
java.lang.String msg,
java.lang.Throwable t)
- Description copied from interface:
MarkingLogger
- This method is similar to
Logger.info(String, Throwable)
method
except that the marker data is also taken into consideration.
- Specified by:
info
in interface MarkingLogger
- Parameters:
marker
- the marker data for this log statementmsg
- the message accompanying the exceptiont
- the exception (throwable) to log
isWarnEnabled
public boolean isWarnEnabled()
- Always returns true.
- Specified by:
isWarnEnabled
in interface Logger
- Returns:
- True if this Logger is enabled for the WARN level,
false otherwise.
isWarnEnabled
public boolean isWarnEnabled(Marker marker)
- Always returns true.
- Specified by:
isWarnEnabled
in interface MarkingLogger
- Parameters:
marker
- The marker data to take into consideration
warn
public void warn(java.lang.String msg)
- A simple implementation which always logs messages of level WARN according
to the format outlined above.
- Specified by:
warn
in interface Logger
- Parameters:
msg
- the message string to be logged
warn
public void warn(java.lang.String format,
java.lang.Object arg)
- Perform single parameter substituion before logging the message of level
WARN according to the format outlined above.
- Specified by:
warn
in interface Logger
- Parameters:
format
- the format stringarg
- the argument
warn
public void warn(java.lang.String format,
java.lang.Object arg1,
java.lang.Object arg2)
- Perform double parameter substituion before logging the message of level
WARN according to the format outlined above.
- Specified by:
warn
in interface Logger
- Parameters:
format
- the format stringarg1
- the first argumentarg2
- the second argument
warn
public void warn(java.lang.String format,
java.lang.Object[] argArray)
- Perform double parameter substituion before logging the message of level
WARN according to the format outlined above.
- Specified by:
warn
in interface Logger
- Parameters:
format
- the format stringargArray
- an array of arguments
warn
public void warn(java.lang.String msg,
java.lang.Throwable t)
- Log a message of level WARN, including an exception.
- Specified by:
warn
in interface Logger
- Parameters:
msg
- the message accompanying the exceptiont
- the exception (throwable) to log
warn
public void warn(Marker marker,
java.lang.String msg)
- Description copied from interface:
MarkingLogger
- Log a message with the specific Marker at the WARN level.
- Specified by:
warn
in interface MarkingLogger
- Parameters:
marker
- The marker specific to this log statementmsg
- the message string to be logged
warn
public void warn(Marker marker,
java.lang.String format,
java.lang.Object arg)
- Description copied from interface:
MarkingLogger
- This method is similar to
Logger.warn(String, Object)
method except that the
marker data is also taken into consideration.
- Specified by:
warn
in interface MarkingLogger
- Parameters:
marker
- the marker data specific to this log statementformat
- the format stringarg
- the argument
warn
public void warn(Marker marker,
java.lang.String format,
java.lang.Object arg1,
java.lang.Object arg2)
- Description copied from interface:
MarkingLogger
- This method is similar to
Logger.warn(String, Object, Object)
method except that the marker data is also taken into
consideration.
- Specified by:
warn
in interface MarkingLogger
- Parameters:
marker
- the marker data specific to this log statementformat
- the format stringarg1
- the first argumentarg2
- the second argument
warn
public void warn(Marker marker,
java.lang.String msg,
java.lang.Throwable t)
- Description copied from interface:
MarkingLogger
- This method is similar to
Logger.warn(String, Throwable)
method
except that the marker data is also taken into consideration.
- Specified by:
warn
in interface MarkingLogger
- Parameters:
marker
- the marker data for this log statementmsg
- the message accompanying the exceptiont
- the exception (throwable) to log
isErrorEnabled
public boolean isErrorEnabled()
- Always returns true.
- Specified by:
isErrorEnabled
in interface Logger
- Returns:
- True if this Logger is enabled for the ERROR level,
false otherwise.
isErrorEnabled
public boolean isErrorEnabled(Marker marker)
- Always returns true.
- Specified by:
isErrorEnabled
in interface MarkingLogger
- Parameters:
marker
- The marker data to take into consideration
error
public void error(java.lang.String msg)
- A simple implementation which always logs messages of level ERROR acoording
to the format outlined above.
- Specified by:
error
in interface Logger
- Parameters:
msg
- the message string to be logged
error
public void error(java.lang.String format,
java.lang.Object arg)
- Perform single parameter substituion before logging the message of level
ERROR according to the format outlined above.
- Specified by:
error
in interface Logger
- Parameters:
format
- the format stringarg
- the argument
error
public void error(java.lang.String format,
java.lang.Object arg1,
java.lang.Object arg2)
- Perform double parameter substituion before logging the message of level
ERROR according to the format outlined above.
- Specified by:
error
in interface Logger
- Parameters:
format
- the format stringarg1
- the first argumentarg2
- the second argument
error
public void error(java.lang.String format,
java.lang.Object[] argArray)
- Perform double parameter substituion before logging the message of level
WARN according to the format outlined above.
- Specified by:
error
in interface Logger
- Parameters:
format
- the format stringargArray
- an array of arguments
error
public void error(java.lang.String msg,
java.lang.Throwable t)
- Log a message of level ERROR, including an exception.
- Specified by:
error
in interface Logger
- Parameters:
msg
- the message accompanying the exceptiont
- the exception (throwable) to log
error
public void error(Marker marker,
java.lang.String msg)
- Description copied from interface:
MarkingLogger
- Log a message with the specific Marker at the ERROR level.
- Specified by:
error
in interface MarkingLogger
- Parameters:
marker
- The marker specific to this log statementmsg
- the message string to be logged
error
public void error(Marker marker,
java.lang.String format,
java.lang.Object arg)
- Description copied from interface:
MarkingLogger
- This method is similar to
Logger.error(String, Object)
method except that the
marker data is also taken into consideration.
- Specified by:
error
in interface MarkingLogger
- Parameters:
marker
- the marker data specific to this log statementformat
- the format stringarg
- the argument
error
public void error(Marker marker,
java.lang.String format,
java.lang.Object arg1,
java.lang.Object arg2)
- Description copied from interface:
MarkingLogger
- This method is similar to
Logger.error(String, Object, Object)
method except that the marker data is also taken into
consideration.
- Specified by:
error
in interface MarkingLogger
- Parameters:
marker
- the marker data specific to this log statementformat
- the format stringarg1
- the first argumentarg2
- the second argument
error
public void error(Marker marker,
java.lang.String msg,
java.lang.Throwable t)
- Description copied from interface:
MarkingLogger
- This method is similar to
Logger.error(String, Throwable)
method except that the marker data is also taken into
consideration.
- Specified by:
error
in interface MarkingLogger
- Parameters:
marker
- the marker data specific to this log statementmsg
- the message accompanying the exceptiont
- the exception (throwable) to log