Factories

• Builder uses a factory to build nodes

• Default factory builds standard classes

• Can change factories using the setFactory() method in Builder

• Subclassing enables:

  • Extra utility methods
    • public String getAttributeValue(String name, String uri, String default)
  • Read-only tree
  • Application specific classes
    • XHTMLElement
    • PElement
    • DivElement
    • etc.