All Classes (Log4j Version 1.2.17)

All Classes Interface Summary Class Summary Exception Summary
Class	Description
AbsoluteTimeDateFormat	Formats a `Date` in the format "HH:mm:ss,SSS" for example, "15:49:37,459".
AbstractDynamicMBean
Agent	Deprecated.
Appender	Implement this interface for your own strategies for outputting log statements.
AppenderAttachable	Interface for attaching appenders to objects.
AppenderAttachableImpl	A straightforward implementation of the `AppenderAttachable` interface.
AppenderDynamicMBean
AppenderFinalizer	`AppenderFinalizer` has a single method that will finalize resources associated with a `LogBrokerMonitor` in the event that the `LF5Appender` class is destroyed, and the class loader is garbage collected.
AppenderSkeleton	Abstract superclass of the other appenders in the package.
AsyncAppender	The AsyncAppender lets users log events asynchronously.
AttributesRenderer	Render `org.xml.sax.Attributes` objects.
BasicConfigurator	Use this class to quickly configure the package.
BoundedFIFO	`BoundedFIFO` serves as the bounded first-in-first-out buffer heavily used by the `AsyncAppender`.
Category	This class has been deprecated and replaced by the `Logger` subclass.
Configurator	Implemented by classes capable of configuring log4j using a URL.
ConsoleAppender	ConsoleAppender appends log events to `System.out` or `System.err` using a layout specified by the user.
CountingQuietWriter	Counts the number of bytes written.
CyclicBuffer	CyclicBuffer is used by other appenders to hold `LoggingEvents` for immediate or differed display.
DailyRollingFileAppender	DailyRollingFileAppender extends `FileAppender` so that the underlying file is rolled over at a user chosen frequency.
DateLayout	This abstract layout takes care of all the date related options and formatting work.
DateTimeDateFormat	Formats a `Date` in the format "dd MMM yyyy HH:mm:ss,SSS" for example, "06 Nov 1994 15:49:37,459".
DefaultLF5Configurator	The `DefaultLF5Configurator` provides a default configuration for the `LF5Appender`.
DefaultRepositorySelector
DefaultThrowableRenderer	Default implementation of ThrowableRenderer using Throwable.printStackTrace.
DenyAllFilter	This filter drops all logging events.
DOMConfigurator	Use this class to initialize the log4j environment using a DOM tree.
EnhancedPatternLayout	This class is an enhanced version of org.apache.log4j.PatternLayout which was originally developed as part of the abandoned log4j 1.3 effort and has been available in the extras companion.
EnhancedThrowableRenderer	Enhanced implementation of ThrowableRenderer.
ErrorCode	This interface defines commonly encoutered error codes.
ErrorHandler	Appenders may delegate their error handling to `ErrorHandlers`.
ExternallyRolledFileAppender	This appender listens on a socket on the port specified by the Port property for a "RollOver" message.
FallbackErrorHandler	The `FallbackErrorHandler` implements the ErrorHandler interface such that a secondary appender may be specified.
FileAppender	FileAppender appends log events to a file.
FileWatchdog	Check every now and then that a certain file has not changed.
Filter	Users should extend this class to implement customized logging event filtering.
FilteredObjectInputStream	Extended ObjectInputStream that only allows certain classes to be deserialized.
FormattingInfo	FormattingInfo instances contain the information obtained when parsing formatting modifiers in conversion modifiers.
Hierarchy	This class is specialized in retrieving loggers by name and also maintaining the logger hierarchy.
HierarchyDynamicMBean
HierarchyEventListener	Listen to events occuring within a `Hierarchy`.
HTMLLayout	This layout outputs events in a HTML table.
ISO8601DateFormat	Formats a `Date` in the format "yyyy-MM-dd HH:mm:ss,SSS" for example "1999-11-27 15:49:37,459".
Layout	Extend this abstract class to create your own log layout format.
LayoutDynamicMBean
Level	Defines the minimum set of levels recognized by the system, that is `OFF`, `FATAL`, `ERROR`, `WARN`, `INFODEBUG` and `ALL`.
LevelMatchFilter	This is a very simple filter based on level matching.
LevelRangeFilter	This is a very simple filter based on level matching, which can be used to reject messages with priorities outside a certain range.
LF5Appender	`LF5Appender` logs events to a swing based logging console.
Loader	Load resources (or images) from various sources.
LocationInfo	The internal representation of caller location information.
Log4jEntityResolver	An `EntityResolver` specifically designed to return `log4j.dtd` which is embedded within the log4j jar file.
Log4JLogRecord	A `Log4JLogRecord` encapsulates the details of your log4j `LoggingEvent` in a format usable by the `LogBrokerMonitor`.
Logger	This is the central class in the log4j package.
LoggerDynamicMBean
LoggerFactory	Implement this interface to create new instances of Logger or a sub-class of Logger.
LoggerRepository	A `LoggerRepository` is used to create and retrieve `Loggers`.
LoggingEvent	The internal representation of logging events.
LogLevel	The LogLevel class defines a set of standard logging levels.
LogLevelFormatException	Thrown to indicate that the client has attempted to convert a string to one the LogLevel types, but the string does not have the appropriate format.
LogLog	This class used to output log statements from within the log4j package.
LogManager	Use the `LogManager` class to retreive `Logger` instances or to operate on the current `LoggerRepository`.
LogMF	This class provides parameterized logging services using the pattern syntax of java.text.MessageFormat.
LogRecord	LogRecord.
LogRecordFilter	An interface for classes which filters LogRecords.
LogSF	This class provides parameterized logging services using the SLF4J pattern syntax.
LogXF	This is a base class for LogMF and LogSF parameterized logging classes.
MDC	The MDC class is similar to the `NDC` class except that it is based on a map instead of a stack.
MDCKeySetExtractor
MessageRenderer	Render `javax.jms.Message` objects.
NDC	The NDC class implements nested diagnostic contexts as defined by Neil Harrison in the article "Patterns for Logging Diagnostic Messages" part of the book "Pattern Languages of Program Design 3" edited by Martin et al.
NOPLogger	No-operation implementation of Logger used by NOPLoggerRepository.
NOPLoggerRepository	No-operation implementation of LoggerRepository which is used when LogManager.repositorySelector is erroneously nulled during class reloading.
NTEventLogAppender	Append to the NT event log system.
NullAppender	A NullAppender merely exists, it never outputs a message to any device.
NullEnumeration	An always-empty Enumerator.
ObjectRenderer	Implement this interface in order to render objects as strings.
OnlyOnceErrorHandler	The `OnlyOnceErrorHandler` implements log4j's default error handling policy which consists of emitting a message for the first error in an appender and ignoring all following errors.
OptionConverter	A convenience class to convert property values to specific types.
OptionHandler	A string based interface to configure package components.
PassingLogRecordFilter	An implementation of LogRecordFilter which always returns true.
PatternConverter	PatternConverter is an abtract class that provides the formatting functionality that derived classes need.
PatternLayout	A flexible layout configurable with pattern string.
PatternParser	Most of the work of the `PatternLayout` class is delegated to the PatternParser class.
Priority	Refrain from using this class directly, use the `Level` class instead.
PropertyConfigurator	Allows the configuration of log4j from an external file.
PropertyGetter	Used for inferring configuration information for a log4j's component.
PropertyGetter.PropertyCallback
PropertyPrinter	Prints the configuration of the log4j default hierarchy (which needs to be auto-initialized) as a propoperties file on a `PrintWriter`.
PropertySetter	General purpose Object property setter.
PropertySetterException	Thrown when an error is encountered whilst attempting to set a property using the `PropertySetter` utility class.
QuietWriter	QuietWriter does not throw exceptions when things go wrong.
RelativeTimeDateFormat	Formats a `Date` by printing the number of milliseconds elapsed since construction of the format.
ReloadingPropertyConfigurator
RendererMap	Map class objects to an `ObjectRenderer`.
RendererSupport
RepositorySelector	The `LogManager` uses one (and only one) `RepositorySelector` implementation to select the `LoggerRepository` for a particular application context.
Roller	A simple application to send roll over messages to a potentially remote `ExternallyRolledFileAppender`.
RollingFileAppender	RollingFileAppender extends FileAppender to backup the log files when they reach a certain size.
RootCategory	Deprecated. Replaced by `RootLogger`.
RootLogger	RootLogger sits at the top of the logger hierachy.
SAXErrorHandler
SimpleLayout	SimpleLayout consists of the level of the log statement, followed by " - " and then the log message itself.
SimpleSocketServer	A simple `SocketNode` based server.
SMTPAppender	Send an e-mail when a specific logging event occurs, typically on errors or fatal errors.
SocketAppender	Sends `LoggingEvent` objects to a remote a log server, usually a `SocketNode`.
SocketHubAppender	Sends `LoggingEvent` objects to a set of remote log servers, usually a `SocketNodes`.
SocketNode	Read `LoggingEvent` objects sent from a remote client using Sockets (TCP).
SocketServer	A `SocketNode` based server that uses a different hierarchy for each client.
StartLogFactor5	Starts an instance of the LogFactor5 console for off-line viewing.
StringMatchFilter	This is a very simple filter based on string matching.
SyslogAppender	Use SyslogAppender to send log messages to a remote syslog daemon.
SyslogQuietWriter	SyslogQuietWriter extends QuietWriter by prepending the syslog level code before each printed String.
SyslogWriter	SyslogWriter is a wrapper around the java.net.DatagramSocket class so that it behaves like a java.io.Writer.
TelnetAppender	The TelnetAppender is a log4j appender that specializes in writing to a read-only socket.
ThreadGroupRenderer	Render `ThreadGroup` objects in a format similar to the information output by the `ThreadGroup.list()` method.
ThreadLocalMap	`ThreadLocalMap` extends `InheritableThreadLocal` to bequeath a copy of the hashtable of the MDC of the parent thread.
ThrowableInformation	ThrowableInformation is log4j's internal representation of throwables.
ThrowableRenderer	Implemented by classes that render instances of java.lang.Throwable (exceptions and errors) into a string representation.
ThrowableRendererSupport	Implemented by logger repositories that support configurable rendering of Throwables.
Transform	Utility class for transforming strings.
TriggeringEventEvaluator	Implementions of this interface allow certain appenders to decide when to perform an appender specific action.
TTCCLayout	TTCC layout format consists of time, thread, category and nested diagnostic context information, hence the name.
UnrecognizedElementHandler	When implemented by an object configured by DOMConfigurator, the handle method will be called when an unrecognized child element is encountered.
UtilLoggingLevel	An extension of the Level class that provides support for java.util.logging Levels.
WriterAppender	WriterAppender appends log events to a `Writer` or an `OutputStream` depending on the user's choice.
XMLLayout	The output of the XMLLayout consists of a series of log4j:event elements as defined in the log4j.dtd.
ZeroConfSupport