# Package org.apache.commons.logging.impl

package org.apache.commons.logging.impl
Concrete implementations of commons-logging wrapper APIs.

- Related Packages
  Package
  Description
  org.apache.commons.logging
  Simple wrapper API around multiple logging APIs.
- Classes
  Class
  Description
  AvalonLogger
  Deprecated.
  Scheduled for removal because the Apache Avalon Project has been discontinued.
  Jdk13LumberjackLogger
  Deprecated.
  Scheduled for removal because the Lumberjack Project has been discontinued.
  Jdk14Logger
  Implementation of the `org.apache.commons.logging.Log` interface that wraps the standard JDK logging mechanisms that were introduced in the Merlin release (JDK 1.4).
  Log4jApiLogFactory
  Logger factory hardcoded to send everything to Log4j API.
  Log4JLogger
  Deprecated.
  Scheduled for removal since version 1.x of Log4j has reached end-of-life.
  LogFactoryImpl
  Concrete subclass of `LogFactory` that implements the following algorithm to dynamically select a logging implementation class to instantiate a wrapper for: Use a factory configuration attribute named `org.apache.commons.logging.Log` to identify the requested implementation class. Use the `org.apache.commons.logging.Log` system property to identify the requested implementation class. If Log4J is available, return an instance of `org.apache.commons.logging.impl.Log4JLogger`. If JDK 1.4 or later is available, return an instance of `org.apache.commons.logging.impl.Jdk14Logger`. Otherwise, return an instance of `org.apache.commons.logging.impl.SimpleLog`.
  LogKitLogger
  Deprecated.
  Scheduled for removal because the Apache Avalon Project has been discontinued.
  NoOpLog
  Trivial implementation of Log that throws away all messages.
  ServletContextCleaner
  This class is capable of receiving notifications about the undeployment of a webapp, and responds by ensuring that commons-logging releases all memory associated with the undeployed webapp.
  SimpleLog
  Simple implementation of Log that sends all enabled log messages, for all defined loggers, to System.err.
  Slf4jLogFactory
  Logger factory hardcoded to send everything to SLF4J.
  WeakHashtable
  Deprecated.
  No longer used, will be removed in 2.0.