public SAXSource() 
{

}

Zero-argument default constructor. If this constructor is used, and no SAX source is set using #setInputSource(InputSource inputSource) , then the Transformer will create an empty source org.xml.sax.InputSource using new InputSource() .

Also see:

javax.xml.transform.Transformer#transform(Source xmlSource, Result outputTarget)

 public SAXSource(InputSource inputSource) 
{
        this.inputSource = inputSource;
}

Create a SAXSource, using a SAX InputSource. The javax.xml.transform.Transformer or javax.xml.transform.sax.SAXTransformerFactory creates a reader via org.xml.sax.helpers.XMLReaderFactory (if setXMLReader is not used), sets itself as the reader's org.xml.sax.ContentHandler , and calls reader.parse(inputSource).

Parameters:

inputSource - An input source reference that must be non-null and that will be passed to the parse method of the reader.

 public SAXSource(XMLReader reader,
    InputSource inputSource) 
{
        this.reader      = reader;
        this.inputSource = inputSource;
}

Create a SAXSource, using an org.xml.sax.XMLReader and a SAX InputSource. The javax.xml.transform.Transformer or javax.xml.transform.sax.SAXTransformerFactory will set itself to be the reader's org.xml.sax.ContentHandler , and then will call reader.parse(inputSource).

Parameters:

reader - An XMLReader to be used for the parse.

inputSource - A SAX input source reference that must be non-null and that will be passed to the reader parse method.

 public InputSource getInputSource() 
{
        return inputSource;
}

Get the SAX InputSource to be used for the Source.

 public String getSystemId() 
{
        if (inputSource == null) {
            return null;
        } else {
            return inputSource.getSystemId();
        }
}

Get the base ID (URI or system ID) from where URIs will be resolved.

 public XMLReader getXMLReader() 
{
        return reader;
}

Get the XMLReader to be used for the Source.

 public  void setInputSource(InputSource inputSource) 
{
        this.inputSource = inputSource;
}

Set the SAX InputSource to be used for the Source.

 public  void setSystemId(String systemId) 
{
        if (null == inputSource) {
            inputSource = new InputSource(systemId);
        } else {
            inputSource.setSystemId(systemId);
        }
}

Set the system identifier for this Source. If an input source has already been set, it will set the system ID or that input source, otherwise it will create a new input source.

The system identifier is optional if there is a byte stream or a character stream, but it is still useful to provide one, since the application can use it to resolve relative URIs and can include it in error messages and warnings (the parser will attempt to open a connection to the URI only if no byte stream or character stream is specified).

 public  void setXMLReader(XMLReader reader) 
{
        this.reader = reader;
}

Set the XMLReader to be used for the Source.

 public static InputSource sourceToInputSource(Source source) 
{
        if (source instanceof SAXSource) {
            return ((SAXSource) source).getInputSource();
        } else if (source instanceof StreamSource) {
            StreamSource ss      = (StreamSource) source;
            InputSource  isource = new InputSource(ss.getSystemId());
            isource.setByteStream(ss.getInputStream());
            isource.setCharacterStream(ss.getReader());
            isource.setPublicId(ss.getPublicId());
            return isource;
        } else {
            return null;
        }
}

Attempt to obtain a SAX InputSource object from a Source object.