XML parsing problem

[shitij]

Hi Everybody,
I have two applications which are used to parse XML file. The first one is using DOM object to parse it and the second one is using SAX2 to parse the file. The same file is parsed for both applications one by one. The DOM parser application takes much lesser time with more memory consumption as compared to SAX parser.
If DOM consumes much more memory as compared to SAX2, then why SAX2 parser is much slower than DOM parser.

[OReubens]

You answered your own question.

DOM is faster because it uses more memory. SAX2 is slower because it goes out of it's way to do it's job in as few memory as possible.

The 'problem' here is that you're probably just reading small XML files. If that's all you'll ever need to do, then DOM is probably a better way to go.

If however you need to be able to parse large/huge XML files (possibly larger than available memory), then DOM probably won't be able to parse them while SAX2 will.