# Package org.apache.jorphan.collections

package org.apache.jorphan.collections

- Class
  Description
  Data
  Use this class to store database-like data.
  HashTree
  This class is used to create a tree structure of objects.
  HashTreeTraverser
  By implementing this interface, a class can easily traverse a HashTree object, and be notified via callbacks of certain events.
  ListedHashTree
  ListedHashTree is a different implementation of the `HashTree` collection class.
  SearchByClass<T>
  Useful for finding all nodes in the tree that represent objects of a particular type.