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Because JAXP 1.0 supported only parsing, therefore, it was called Java API for XML Parsing.
A SAX parser parses an XML document in a streaming fashion (forward only) and reports the events, in the sequence encountered, to the registered content handler, sax. Content Handler.) and errors (if any) to the registered error handler, sax. If you don't register an error handler, you will never know if there was any error while parsing the XML, and what it was.start Document is called only once before reporting any other event.Similarly, end Document is called only once after the entire XML is parsed successfully. SAXParser Factory spfactory = SAXParser Instance(); Namespace Aware(true); SAXParser saxparser = SAXParser(); //write your handler for processing events and handling error Default Handler handler = new My Handler(); //parse the XML and report events and errors (if any) to the handler saxparser.parse(new File("data.xml"), handler); DOM parsing is an object-based parsing mechanism, which generates an XML object model: an inverted tree-like data structure, which represents the XML document.But, there is a different JSR (#173) filed for pull parsing, also known as Streaming API for XML (St AX) parsing, and nothing much can be done about that now. SAX APIs were proposed by David Megginson (in early 1998) as an effort towards a standard API for event-based parsing of XML (read the genesis of SAX here).Even though SAX is not a W3C REC, it is surely the de facto industry standard for parsing XML documents.