org.dom4j
Interfaces 
Attribute
Branch
CDATA
CharacterData
Comment
Document
DocumentType
Element
ElementHandler
ElementPath
Entity
Namespace
Node
NodeFactory
NodeFilter
ProcessingInstruction
QName
Text
Visitor
XPath
XPathFactory
Classes 
DocumentFactory
DocumentHelper
VisitorSupport
Exceptions 
DocumentException
IllegalAddException
InvalidXPathException
XPathException