DocumentBuilderFactory.newInstance(); OR TransformerFactory.newInstance();

[otnj2ee]

Usually when we create a reference to an class, we'll do:

Test tst = new Test();

But when we create a DocumentBuilderFactory or a TransformerFactory, we use:

DocumentBuilderFactory.newInstance();

or

TransformerFactory.newInstance();

Why use the newInstance() instead?


Thanks


Scott

[shyam]

coz thats the abstract factory design pattern read more here http://en.wikipedia.org/wiki/Abstract_factory_pattern