# Hierarchy For All Packages

Package Hierarchies:

- org.apache.commons.logging,
- org.apache.commons.logging.impl

## Class Hierarchy

- java.lang.Object
  - org.apache.commons.logging.impl.AvalonLogger (implements org.apache.commons.logging.Log)
  - java.util.Dictionary<K,V>
    - java.util.Hashtable<K,V> (implements java.lang.Cloneable, java.util.Map<K,V>, java.io.Serializable)
      - org.apache.commons.logging.impl.WeakHashtable
  - org.apache.commons.logging.impl.Jdk13LumberjackLogger (implements org.apache.commons.logging.Log, java.io.Serializable)
  - org.apache.commons.logging.impl.Jdk14Logger (implements org.apache.commons.logging.Log, java.io.Serializable)
  - org.apache.commons.logging.impl.Log4JLogger (implements org.apache.commons.logging.Log, java.io.Serializable)
  - org.apache.commons.logging.LogFactory
    - org.apache.commons.logging.impl.Log4jApiLogFactory
    - org.apache.commons.logging.impl.LogFactoryImpl
    - org.apache.commons.logging.impl.Slf4jLogFactory
  - org.apache.commons.logging.impl.LogKitLogger (implements org.apache.commons.logging.Log, java.io.Serializable)
  - org.apache.commons.logging.LogSource
  - org.apache.commons.logging.impl.NoOpLog (implements org.apache.commons.logging.Log, java.io.Serializable)
  - org.apache.commons.logging.impl.ServletContextCleaner (implements javax.servlet.ServletContextListener)
  - org.apache.commons.logging.impl.SimpleLog (implements org.apache.commons.logging.Log, java.io.Serializable)
  - java.lang.Throwable (implements java.io.Serializable)
    - java.lang.Exception
      - java.lang.RuntimeException
        - org.apache.commons.logging.LogConfigurationException

## Interface Hierarchy

- org.apache.commons.logging.Log