This mechanism is frequently used to transmit and receive XML documents. When using the SAX parser we provide the callback methods, and the parser invokes them as it reads the XML data.SAX is a state independent processing, where the handling of an element does not depend on the other elements. In SAX we cannot go back to an earlier part of the document and we can only process element by element, one by one from the start to the end.SAX is fast and efficient and it is useful for state-independent filtering.SAX parser calls a method when an element tag is encountered and calls a different method when text is found.SAX requires much less memory than DOM since SAX does not create an internal tree structure of the XML data, as a DOM does.In the following we are going to see a demo application which output all SAX events. It is extending When a fatal error occurs, the parser cannot continue. For nonfatal errors and warnings, default error handler would not generate exceptions and no messages are displayed.
The following line installs the our own error handler. validate = false; validate = true; SAXParser Factory spf = SAXParser Instance(); Validating(validate); XMLReader reader = null; SAXParser parser = SAXParser(); reader = XMLReader(); Error Handler( import parsers.