# Uses of Package
org.apache.log4j

- Packages that use org.apache.log4j
  Package | Description
  --- | ---
  org.apache.log4j | An rather minimal but sufficient implementation redirecting all calls to a log4j logger to a logback logger.
  org.apache.log4j.spi |

- Classes in org.apache.log4j used by org.apache.log4j
  Class and Description
  Appender Implement this interface for your own strategies for outputting log statements.
  AppenderSkeleton
  Category This class is a minimal implementation of the original `org.apache.log4j.Category` class (as found in log4j 1.2) by delegation of all calls to a `Logger` instance.
  Layout This class is a minimal implementation of the original Log4J class.
  Level Defines the minimum set of levels recognized by the system, that is `OFF`, `FATAL`, `ERROR`, `WARN`, `INFO`, `DEBUG` and `ALL`.
  Logger This class is a minimal implementation of the original `org.apache.log4j.Logger` class (as found in log4j 1.2) delegating all calls to a `Logger` instance.
  Priority Refrain from using this class directly, use the `Level` class instead.
  WriterAppender

- Classes in org.apache.log4j used by org.apache.log4j.spi
  Class and Description
  Appender Implement this interface for your own strategies for outputting log statements.
  Category This class is a minimal implementation of the original `org.apache.log4j.Category` class (as found in log4j 1.2) by delegation of all calls to a `Logger` instance.
  Level Defines the minimum set of levels recognized by the system, that is `OFF`, `FATAL`, `ERROR`, `WARN`, `INFO`, `DEBUG` and `ALL`.
  Logger This class is a minimal implementation of the original `org.apache.log4j.Logger` class (as found in log4j 1.2) delegating all calls to a `Logger` instance.

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