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What are DOM and SAX Parsers?

DOM means Document Object Model. DOM Parser represents entire XML in Tree Format. It creates tree in Memory and then parses it. That means it requires lot of Memory and may time consuming.
SAX means Simple API for XML Parsing. It is event based Parser. It fires event on XML, when it encounters TAG, process it and proceeds.
Hence we can say that SAX is faster than DOM and less memory required.
DOM parser is DOM based and SAX Parser in Event Based.
Both are covered in JAVA under JAXP umbrella term.

Sources:
Internet

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