Logger

java.lang.Object
- org.apache.log4j.Category
- - org.apache.log4j.Logger

All Implemented Interfaces:

AppenderAttachable

Direct Known Subclasses:

NOPLogger, RootLogger
```
public class Logger
extends Category
```

Field Summary

Fields
Modifier and Type Field Description

private static java.lang.String FQCN
The fully qualified name of the Logger class.
- Fields inherited from class org.apache.log4j.Category
  aai, additive, bundle, level, name, parent, repository

Constructor Summary

Constructors
Modifier Constructor Description

protected Logger(java.lang.String name)

(package private) Logger(LoggerContext context, java.lang.String name)

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static Logger`	`getLogger(java.lang.Class<?> clazz)`
`static Logger`	`getLogger(java.lang.String name)`
`static Logger`	`getLogger(java.lang.String name, LoggerFactory factory)`
`static Logger`	`getRootLogger()`
`boolean`	`isTraceEnabled()`
`void`	`trace(java.lang.Object message)`
`void`	`trace(java.lang.Object message, java.lang.Throwable t)`

Methods inherited from class org.apache.log4j.Category
addAppender, assertLog, callAppenders, closeNestedAppenders, debug, debug, error, error, exists, fatal, fatal, forcedLog, getAdditivity, getAllAppenders, getAppender, getChainedPriority, getCurrentCategories, getDefaultHierarchy, getEffectiveLevel, getHierarchy, getInstance, getInstance, getLevel, getLogger, getLoggerRepository, getName, getParent, getPriority, getResourceBundle, getRoot, info, info, isAttached, isDebugEnabled, isEnabledFor, isErrorEnabled, isFatalEnabled, isInfoEnabled, isWarnEnabled, l7dlog, l7dlog, log, log, log, maybeLog, removeAllAppenders, removeAppender, removeAppender, searchInterfaces, setAdditivity, setHierarchy, setLevel, setPriority, setResourceBundle, shutdown, warn, warn

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

Field Detail
- FQCN
```
private static final java.lang.String FQCN
```
  The fully qualified name of the Logger class.

Constructor Detail

Logger

Logger(LoggerContext context,
       java.lang.String name)

Logger

protected Logger(java.lang.String name)

Method Detail

getLogger

public static Logger getLogger(java.lang.Class<?> clazz)

getLogger

public static Logger getLogger(java.lang.String name)

getLogger

public static Logger getLogger(java.lang.String name,
                               LoggerFactory factory)

getRootLogger
```
public static Logger getRootLogger()
```

isTraceEnabled
```
public boolean isTraceEnabled()
```

trace

public void trace(java.lang.Object message)

trace

public void trace(java.lang.Object message,
                  java.lang.Throwable t)