# Hierarchy For Package org.zkoss.util

Package Hierarchies:

- All Packages

## Class Hierarchy

- java.lang.Object
  - java.util.AbstractCollection<E> (implements java.util.Collection<E>)
    - java.util.AbstractList<E> (implements java.util.List<E>)
      - java.util.AbstractSequentialList<E>
        - org.zkoss.util.NotableLinkedList<E> (implements java.lang.Cloneable, java.util.List<E>, java.io.Serializable)
      - org.zkoss.util.CollectionsX.ArrayList<E>
    - java.util.AbstractSet<E> (implements java.util.Set<E>)
      - org.zkoss.util.IdentityHashSet<T> (implements java.lang.Cloneable, java.io.Serializable, java.util.Set<E>)
    - org.zkoss.util.CollectionsX.ArrayCollection<E>
    - org.zkoss.util.CollectionsX.OneCollection<E>
    - org.zkoss.util.DualCollection<T> (implements java.io.Serializable)
  - java.util.AbstractMap<K,​V> (implements java.util.Map<K,​V>)
    - org.zkoss.util.EmptyCacheMap<K,​V> (implements org.zkoss.util.Cache<K,​V>)
    - org.zkoss.util.FilterMap<K,​V>
  - org.zkoss.util.ArraysX
  - org.zkoss.util.CacheMap<K,​V> (implements org.zkoss.util.Cache<K,​V>, java.lang.Cloneable, java.util.Map<K,​V>, java.io.Serializable)
  - org.zkoss.util.CacheMap.Value<V> (implements java.lang.Cloneable, java.io.Serializable)
  - org.zkoss.util.Checksums
  - org.zkoss.util.Cleanups
  - org.zkoss.util.CollectionsX
  - org.zkoss.util.CollectionsX.ArrayEnumeration<E> (implements java.util.Enumeration<E>)
  - org.zkoss.util.CollectionsX.ArrayIterator<E> (implements java.util.Iterator<E>)
    - org.zkoss.util.CollectionsX.ArrayListIterator<E> (implements java.util.ListIterator<E>)
  - org.zkoss.util.CollectionsX.CollectionEnumeration<E> (implements java.util.Enumeration<E>)
  - org.zkoss.util.CollectionsX.EnumerationIterator<E> (implements java.util.Iterator<E>)
  - org.zkoss.util.CollectionsX.OneEnumeration<E> (implements java.util.Enumeration<E>)
  - org.zkoss.util.CollectionsX.OneIterator<E> (implements java.util.Iterator<E>)
  - org.zkoss.util.Dates
  - org.zkoss.util.FastReadArray<T> (implements java.lang.Cloneable, java.io.Serializable)
  - org.zkoss.util.FastReadCache<K,​V> (implements org.zkoss.util.Cache<K,​V>, java.lang.Cloneable, java.io.Serializable)
  - org.zkoss.util.IdentityComparator<T> (implements java.util.Comparator<T>)
  - org.zkoss.util.Locales
  - org.zkoss.util.Maps
  - org.zkoss.util.Maps.SerializableEntry<K,​V> (implements java.util.Map.Entry<K,​V>, java.io.Serializable)
  - org.zkoss.util.MultiCache<K,​V> (implements org.zkoss.util.Cache<K,​V>, java.lang.Cloneable, java.io.Serializable)
  - org.zkoss.util.Pair<X,​Y> (implements java.io.Serializable)
  - java.lang.Throwable (implements java.io.Serializable)
    - java.lang.Exception
      - java.lang.RuntimeException
        - org.zkoss.lang.SystemException (implements org.zkoss.mesg.Messageable)
          - org.zkoss.util.IllegalSyntaxException
  - org.zkoss.util.TimeZones
  - org.zkoss.util.URLs
  - org.zkoss.util.Utils
  - org.zkoss.util.WaitLock

## Interface Hierarchy

- org.zkoss.util.Cache<K,​V>
- org.zkoss.util.Cleanups.Cleanup
- org.zkoss.util.Converter<F,​T>
- org.zkoss.util.FilterMap.Filter<V>