Re: [dom4j-user] How to find the concrete interface implementation?

[Ben Munat]

Just to make sure you aren't having the same confusion I had when I first started with 
Dom4J (and with Java)... If you're looking for the concrete implementation so that you can 
instantiate it -- e.g. "new Element();" -- don't. When using an interface oriented API 
like Dom4J (or Xerces) you use a Factory (from the Factory design pattern) to get 
instances of the object you want. Take a look at the classes DocumentHelper and 
DocumentFactory in the org.dom4j package. You can also just create a Document using the 
factory, get a reference to its root Element, and then use the addElement, addAttribute, 
etc. methods from there.

Hope this wasn't all old news...
b
gary wang wrote:
Hello everyone:
    When I read the source codes of dom4j, I hava a problem.
    The interfaces of Document, Element, and so on, are just interface, 
I can not find the concrete implement codes of methods in these 
interface. Where are they?
   Actually, the problem confused me so much. When I read the source 
codes of Xerces, I also can't find the concrete implement codes of 
interfaces.
   Thanks for help.
 
Best regards!
Gary

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