The JAXP interface uses a factory design pattern. That is, you use factories to create objects. This hides the implementation classes.

The procedure is:

1. Create a TransformerFactory instance.

2. Load your stylesheet into a Transformer instance.

3. Transform your source to your output using the Transfomer instance.

// Step 1: Establishes the factory/environment/etc.
TransformerFactory tfactory = TransformerFactory.newInstance();

// Step 2: Loads and compiles the stylesheet
Transformer xform = tfactory.newTransformer(new StreamSource("mystyle.xsl"));

// Step 3: Apply the transform to the input document
xform.transform(new StreamSource("in.xml"),new StreamSource("out.xhtml"));