The Document Interface as an Abstract Factory

The Document interface, summarized in Example 10.4, serves two purposes in DOM:

  1. As an abstract factory, it creates instances of other nodes for that document.

  2. It is the representation of the document node.

Example 10.4. The Document Interface
 package org.w3c.dom; public interface Document extends Node { public Element createElement(String tagName) throws DOMException; public Element createElementNS(String namespaceURI, String qualifiedName) throws DOMException; public Text createTextNode(String data); public Comment createComment(String data); public CDATASection createCDATASection(String data) throws DOMException; public ProcessingInstruction createProcessingInstruction( String target, String data) ...

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