Focusing on the Difference between SAX and DOM Parsers in XML

Focus keyword: SAX and DOM parsers in XML

SAX Parser:

A SAX (Simple API for XML) parser is event-based and operates by sequentially reading the XML document from start to end. It does not store the entire XML document in memory but instead processes it as a stream of data. This makes it more memory-efficient and suitable for large XML files. SAX parsers parse the document from top to bottom and trigger events corresponding to different parts of the XML structure.

DOM Parser:

A DOM (Document Object Model) parser, on the other hand, loads the entire XML document into memory and represents it as a tree structure. This allows for easy traversal and manipulation of the XML data. DOM parsers provide random access to any part of the document, which makes them more suitable for tasks that involve frequent accessing and modification of the XML content. However, loading the entire document into memory can be resource-intensive, especially for large XML files.

In summary, the main difference between SAX and DOM parsers in XML is the way they handle XML data: SAX parsers process XML as a stream of events, while DOM parsers load the entire XML document into memory as a tree structure.