Implement this interface for your own strategies for outputting log statements.
The base class for Appenders in Log4j 1.
Provided for compatibility with Log4j 1.x.
Implementation of the Category class for compatibility, despite it having been deprecated a long, long time ago.
Defines the minimum set of levels recognized by the system, that is
This class behaves just like Log4j's MDC would - and so can cause issues with the redeployment of web applications if the Objects stored in the threads Map cannot be garbage collected.
Refrain from using this class directly, use the
A configurator for properties.
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