org.apache.log4j
Class Logger

java.lang.Object
  extended byorg.apache.log4j.Category
      extended byorg.apache.log4j.Logger
All Implemented Interfaces:
AppenderAttachable
Direct Known Subclasses:
RootCategory
public class Logger
extends Category

This is the central class in the log4j package. Most logging operations, except configuration, are done through this class.

Since:
log4j 1.2

Field Summary
 
Fields inherited from class org.apache.log4j.Category
additive, level, name, parent, repository, resourceBundle
 
Constructor Summary
protected Logger(String name)
           
 
Method Summary
static Logger getLogger(Class clazz)
          Same as calling getLogger(clazz.getName()).
static Logger getLogger(String name)
          Retrieve a logger by name.
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()
          Retrieve the root logger.
 
Methods inherited from class org.apache.log4j.Category
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, warn
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

Logger

protected Logger(String name)
Method Detail

getLogger

public static Logger getLogger(String name)
Retrieve a logger by name.

getLogger

public static Logger getLogger(Class clazz)
Same as calling getLogger(clazz.getName()).

getRootLogger

public static Logger getRootLogger()
Retrieve the root logger.

getLogger

public 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.

This method is intended to be used by sub-classes.

Parameters:
name - The name of the logger to retrieve.
factory - A LoggerFactory implementation that will actually create a new Instance.
Since:
0.8.5

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