# Package org.apache.log4j.util

- Interface Summary
  Interface | Description
  --- | ---
  Filter |

- Class Summary
  Class | Description
  --- | ---
  AbsoluteDateAndTimeFilter |
  AbsoluteTimeFilter |
  Compare |
  ControlFilter |
  ISO8601Filter |
  JunitTestRunnerFilter |
  LineNumberFilter |
  MDCOrderFilter | This class switches MDC values into the order (unreasonably) expected by the witness files.
  RelativeTimeFilter |
  SerializationTestHelper | Utiities for serialization tests.
  SunReflectFilter | The sun.reflect.* lines are not present in all JDKs.
  Transformer |
  XMLDateFilter |
  XMLLineAttributeFilter |
  XMLTimestampFilter |

- Exception Summary
  Exception | Description
  --- | ---
  UnexpectedFormatException |

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