# Package org.apache.tomcat.util.log

- Class Summary
  Class | Description
  --- | ---
  SystemLogHandler | This helper class may be used to do sophisticated redirection of System.out and System.err on a per Thread basis.
  UserDataHelper | This helper class assists with the logging associated with invalid input data.

- Enum Summary
  Enum | Description
  --- | ---
  UserDataHelper.Mode | Log mode for the next log message.

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