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>From: Srivathsan C [mailto:bc_srivathsan@yahoo.com]
>Sent: Wed 8/27/2003 3:38 AM
>To: xml-dev@lists.xml.org
>Subject: [xml-dev] Need help on JAXB!
>
> Hi All,
>
> What is the advantages and disadvantages of using JAXB over
> SAX/DOM parser?
> Any sample for the same will be very useful
If your program is centered around XML, and you want to parse it and
process it as XML, SAX and DOM are good APIs. SAX is event oriented, lean
and faster. SAX is very fast, and if you are simply extracting or inserting
data into documents, it is generally the tool of choice. DOM is tree
oriented, navigational, moderately large, and strongly reflective of
web-browser programming. Both are very popular APIs. If what you want to do
is navigate and manipulate trees, DOM is your choice - but it can be very
memory intensive.
JAXB does two-way mappings between XML documents and Java objects. You
write a DTD, then the JAXB compiler creates a set of Java classes that
contain the code used to parse XML documents that use this DTD. JAXB does
not do tree manipulation, it places the data into Java objects, where it is
accessed using conventional Java techniques. This makes it simpler to use
for data-oriented applications, but it is not much good for
document-oriented applications.
This is all discussed with concrete code examples here:
http://java.sun.com/xml/webservices.pdf
Jonathan
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