SimpleXPathAPI and XPathWrapper

[Tahura Chaudhry]

The two sample programs, SimpleXPathAPI and XPathWrapper, both read XML, 
find the context node and evaluate the given XPath expression. My question 
is what is the difference between these two samples.

If I'm writing a program that evaluates a given XPath expression for a given 
XML document, which of the two programs should I use as reference.

thanks,
Tahura