| DocumentBuilder | Defines the API to obtain DOM Document instances from an XML document. | 
| DocumentBuilderFactory | Defines a factory API that enables applications to obtain a parser that produces DOM object trees from XML documents. | 
| SAXParser | 
          Defines the API that wraps an XMLReader
 implementation class. 
          
    
         | 
      
| SAXParserFactory | Defines a factory API that enables applications to configure and obtain a SAX based parser to parse XML documents. | 
| ParserConfigurationException | Indicates a serious configuration error. | 
| FactoryConfigurationError | Thrown when a problem with configuration with the Parser Factories exists. |