# Hierarchy For Package org.apache.catalina.util

Package Hierarchies:

- All Packages

## Class Hierarchy

- java.lang.Object
  - java.util.AbstractCollection<E> (implements java.util.Collection<E>)
    - java.util.AbstractSet<E> (implements java.util.Set<E>)
      - java.util.HashSet<E> (implements java.lang.Cloneable, java.io.Serializable, java.util.Set<E>)
        - org.apache.catalina.util.ResourceSet<T>
  - org.apache.catalina.util.CharsetMapper
  - org.apache.catalina.util.ConcurrentDateFormat
  - org.apache.catalina.util.ContextName
  - org.apache.catalina.util.DOMWriter
  - org.apache.catalina.util.ErrorPageSupport
  - org.apache.catalina.util.Extension
  - org.apache.catalina.util.ExtensionValidator
  - java.io.InputStream (implements java.io.Closeable)
    - java.io.ObjectInputStream (implements java.io.ObjectInput, java.io.ObjectStreamConstants)
      - org.apache.catalina.util.CustomObjectInputStream
  - org.apache.catalina.util.Introspection
  - org.apache.catalina.util.IOTools
  - org.apache.catalina.util.LifecycleBase (implements org.apache.catalina.Lifecycle)
    - org.apache.catalina.util.LifecycleMBeanBase (implements org.apache.catalina.JmxEnabled)
    - org.apache.catalina.util.SessionIdGeneratorBase (implements org.apache.catalina.SessionIdGenerator)
      - org.apache.catalina.util.StandardSessionIdGenerator
  - org.apache.catalina.util.ManifestResource
  - org.apache.catalina.util.NetMask
  - org.apache.catalina.util.NetMaskSet
  - org.apache.catalina.util.ParameterMap<K,V> (implements java.util.Map<K,V>, java.io.Serializable)
  - org.apache.catalina.util.RequestUtil
  - org.apache.catalina.util.ServerInfo
  - org.apache.catalina.util.SessionConfig
  - org.apache.catalina.util.Strftime
  - org.apache.catalina.util.StringUtil
  - org.apache.catalina.util.TimeBucketCounter
  - org.apache.catalina.util.TLSUtil
  - org.apache.catalina.util.TomcatCSS
  - org.apache.catalina.util.ToStringUtil
  - org.apache.catalina.util.URLEncoder (implements java.lang.Cloneable)
  - org.apache.catalina.util.XMLWriter