How to read and write xml files?

Question

I have to read and write to and from an XML file. What is the easiest way to read and write XML files using Java?

Answer 1

The above answer only deal with DOM parser (that normally reads the entire file in memory and parse it, what for a big file is a problem), you could use a SAX parser that uses less memory and is faster (anyway that depends on your code).

SAX parser callback some functions when it find a start of element, end of element, attribute, text between elements, etc, so it can parse the document and at the same time you get what you need.

Some example code:

http://www.mkyong.com/java/how-to-read-xml-file-in-java-sax-parser/