protected Transformer() 
{

}

Default constructor is protected on purpose.

 abstract public  void clearParameters()
Clear all parameters set with setParameter.

 abstract public ErrorListener getErrorListener()
Get the error event handler in effect for the transformation.
Implementations must provide a default error listener.

 abstract public Properties getOutputProperties()
Get a copy of the output properties for the transformation.

The properties returned should contain properties set by the user,
and properties set by the stylesheet, and these properties
are "defaulted" by default properties specified by
section 16 of the
XSL Transformations (XSLT) W3C Recommendation.  The properties that
were specifically set by the user or the stylesheet should be in the base
Properties list, while the XSLT default properties that were not
specifically set should be the default Properties list.  Thus,
getOutputProperties().getProperty(String key) will obtain any
property in that was set by #setOutputProperty ,
#setOutputProperties , in the stylesheet, or the default
properties, while
getOutputProperties().get(String key) will only retrieve properties
that were explicitly set by #setOutputProperty ,
#setOutputProperties , or in the stylesheet.

Note that mutation of the Properties object returned will not
effect the properties that the transformer contains.

If any of the argument keys are not recognized and are not
namespace qualified, the property will be ignored and not returned.
In other words the behaviour is not orthogonal with
 setOutputProperties .

 abstract public String getOutputProperty(String name) throws IllegalArgumentException
Get an output property that is in effect for the
transformer.  The property specified may be a property
that was set with setOutputProperty, or it may be a
property specified in the stylesheet.

 abstract public Object getParameter(String name)
Get a parameter that was explicitly set with setParameter.

This method does not return a default parameter value, which
cannot be determined until the node context is evaluated during
the transformation process.

 abstract public URIResolver getURIResolver()
Get an object that will be used to resolve URIs used in
document().

 public  void reset() 
{
		// implementors should override this method
		throw new UnsupportedOperationException(
			"This Transformer, \"" + this.getClass().getName() + "\", does not support the reset functionality."
			+ "  Specification \"" + this.getClass().getPackage().getSpecificationTitle() + "\""
			+ " version \"" + this.getClass().getPackage().getSpecificationVersion() + "\""
			);
}

Reset this Transformer to its original configuration.

Transformer is reset to the same state as when it was created with TransformerFactory#newTransformer() , TransformerFactory#newTransformer(Source source) or Templates#newTransformer() . reset() is designed to allow the reuse of existing Transformers thus saving resources associated with the creation of new Transformers.

The reset Transformer is not guaranteed to have the same URIResolver or ErrorListener Objects, e.g. Object#equals(Object obj) . It is guaranteed to have a functionally equal URIResolver and ErrorListener.

 abstract public  void setErrorListener(ErrorListener listener) throws IllegalArgumentException
Set the error event listener in effect for the transformation.

 abstract public  void setOutputProperties(Properties oformat)
Set the output properties for the transformation.  These
properties will override properties set in the Templates
with xsl:output.

If argument to this function is null, any properties
previously set are removed, and the value will revert to the value
defined in the templates object.

Pass a qualified property key name as a two-part string, the namespace
URI enclosed in curly braces ({}), followed by the local name. If the
name has a null URL, the String only contain the local name. An
application can safely check for a non-null URI by testing to see if the
first character of the name is a '{' character.
For example, if a URI and local name were obtained from an element
defined with <xyz:foo
xmlns:xyz="http://xyz.foo.com/yada/baz.html"/>,
then the qualified name would be "{http://xyz.foo.com/yada/baz.html}foo".
Note that no prefix is used.
An IllegalArgumentException is thrown  if any of the
argument keys are not recognized and are not namespace qualified.

 abstract public  void setOutputProperty(String name,
    String value) throws IllegalArgumentException
Set an output property that will be in effect for the
transformation.

Pass a qualified property name as a two-part string, the namespace URI
enclosed in curly braces ({}), followed by the local name. If the
name has a null URL, the String only contain the local name. An
application can safely check for a non-null URI by testing to see if the
first character of the name is a '{' character.
For example, if a URI and local name were obtained from an element
defined with <xyz:foo
xmlns:xyz="http://xyz.foo.com/yada/baz.html"/>,
then the qualified name would be "{http://xyz.foo.com/yada/baz.html}foo".
Note that no prefix is used.

The Properties object that was passed to #setOutputProperties 
won't be effected by calling this method.

 abstract public  void setParameter(String name,
    Object value)
Add a parameter for the transformation.

Pass a qualified name as a two-part string, the namespace URI
enclosed in curly braces ({}), followed by the local name. If the
name has a null URL, the String only contain the local name. An
application can safely check for a non-null URI by testing to see if the
first character of the name is a '{' character.
For example, if a URI and local name were obtained from an element
defined with <xyz:foo
xmlns:xyz="http://xyz.foo.com/yada/baz.html"/>,
then the qualified name would be "{http://xyz.foo.com/yada/baz.html}foo".
Note that no prefix is used.

 abstract public  void setURIResolver(URIResolver resolver)
Set an object that will be used to resolve URIs used in
document().

If the resolver argument is null, the URIResolver value will
be cleared and the transformer will no longer have a resolver.

 abstract public  void transform(Source xmlSource,
    Result outputTarget) throws TransformerException
Transform the XML Source to a Result.
Specific transformation behavior is determined by the settings of the
TransformerFactory in effect when the
Transformer was instantiated and any modifications made to
the Transformer instance.

An empty Source is represented as an empty document
as constructed by javax.xml.parsers.DocumentBuilder#newDocument() .
The result of transforming an empty Source depends on
the transformation behavior; it is not always an empty
Result.