public class Logger extends Category
additive, level, name, parent, repository, resourceBundle| Modifier and Type | Method and Description |
|---|---|
static Logger |
getLogger(Class clazz)
Shorthand for
getLogger(clazz.getName()). |
static Logger |
getLogger(String name)
Retrieve a logger named according to the value of the
name parameter. |
static Logger |
getLogger(String name,
LoggerFactory factory)
Like
getLogger(String) except that the type of logger instantiated depends on the type returned by the
LoggerFactory.makeNewLoggerInstance(java.lang.String) method of the
factory parameter. |
static Logger |
getRootLogger()
Return the root logger for the current logger repository.
|
boolean |
isTraceEnabled()
Check whether this category is enabled for the TRACE Level.
|
void |
trace(Object message)
Log a message object with the
TRACE level. |
void |
trace(Object message,
Throwable t)
Log a message object with the
TRACE level including the stack trace of the
Throwablet passed as parameter. |
addAppender, assertLog, callAppenders, debug, debug, error, error, exists, fatal, fatal, forcedLog, getAdditivity, getAllAppenders, getAppender, getChainedPriority, getCurrentCategories, getDefaultHierarchy, getEffectiveLevel, getHierarchy, getInstance, getInstance, getLevel, getLoggerRepository, getName, getParent, getPriority, getResourceBundle, getResourceBundleString, getRoot, info, info, isAttached, isDebugEnabled, isEnabledFor, isInfoEnabled, l7dlog, l7dlog, log, log, log, removeAllAppenders, removeAppender, removeAppender, setAdditivity, setLevel, setPriority, setResourceBundle, shutdown, warn, warnprotected Logger(String name)
public static Logger getLogger(String name)
name parameter. If the named logger already
exists, then the existing instance will be returned. Otherwise, a new instance is created.
By default, loggers do not have a set level but inherit it from their neareast ancestor with a set level. This is one of the central features of log4j.
name - The name of the logger to retrieve.public static Logger getLogger(Class clazz)
getLogger(clazz.getName()).clazz - The name of clazz will be used as the name of the logger to retrieve. See
getLogger(String) for more detailed information.public static Logger getRootLogger()
The Logger.getName() method for the root logger always returns string value: "root". However,
calling
Logger.getLogger("root") does not retrieve the root logger but a
logger just under root named "root".
In other words, calling this method is the only way to retrieve the root logger.
public static Logger getLogger(String name, LoggerFactory factory)
getLogger(String) except that the type of logger instantiated depends on the type returned by the
LoggerFactory.makeNewLoggerInstance(java.lang.String) method of the
factory parameter.
This method is intended to be used by sub-classes.
name - The name of the logger to retrieve.factory - A LoggerFactory implementation that will actually create a new Instance.public void trace(Object message)
TRACE level.message - the message object to log.for an explanation of the logic applied.public void trace(Object message, Throwable t)
TRACE level including the stack trace of the
Throwablet passed as parameter.
See Category.debug(Object) form for more detailed information.
message - the message object to log.t - the exception to log, including its stack trace.public boolean isTraceEnabled()
true if this category is enabled for level TRACE, false otherwise.Copyright © 1999–2023 QOS.CH Sarl (Switzerland). All rights reserved.