# Package org.apache.log4j.filter

- Class Summary
  Class | Description
  --- | ---
  AndFilter | A filter that 'and's the results of any number of contained filters together.
  DenyAllFilter | This filter drops all logging events.
  ExpressionFilter | A filter supporting complex expressions - supports both infix and postfix expressions (infix expressions must first be converted to postfix prior to processing).
  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.
  LocationInfoFilter | Location information is usually specified at the appender level - all events associated with an appender either create and parse stack traces or they do not.
  LoggerMatchFilter | This is a very simple filter based on logger name matching.
  StringMatchFilter | This is a very simple filter based on string matching.
  TimeFilter | Filters events that fall within a specified time period in each day.

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