The most commonly used builder is SAXBuilder which constructs a JDOM document using a SAX parser and can pull content from files, streams, sockets, readers, and so on. It can use any underlying SAX parser to handle the parsing chores.
DOMBuilder lets you build JDOM content from existing org.w3c.dom.*
instances.
The StAXStreamBuilder and StAXEventBuilder classes allow you to build JDOM content from StAX-based XMLStreamReader and XMLEventReader instances.