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## Uses of Package
org.apache.log4j

Packages that use org.apache.log4j
org.apache.log4j | Log4j 1.x compatibility layer.
org.apache.log4j.spi | Log4j 1.x compatibility layer.

Classes in org.apache.log4j used by org.apache.log4j
Appender Implement this interface for your own strategies for outputting log statements.
Category Implementation of the Category class for compatibility, despite it having been deprecated a long, long time ago.
Layout
Level Defines the minimum set of levels recognized by the system, that is `OFF`, `FATAL`, `ERROR`, `WARN`, `INFO`, `DEBUG` and `ALL`.
Logger
Priority Refrain from using this class directly, use the `Level` class instead.

Classes in org.apache.log4j used by org.apache.log4j.spi
Appender Implement this interface for your own strategies for outputting log statements.
Category Implementation of the Category class for compatibility, despite it having been deprecated a long, long time ago.
Level Defines the minimum set of levels recognized by the system, that is `OFF`, `FATAL`, `ERROR`, `WARN`, `INFO`, `DEBUG` and `ALL`.
Logger

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