Tutorial by Examples

Given the following XML document: <documentation> <tags> <tag name="Java"> <topic name="Regular expressions"> <example>Matching groups</example> <example>Escaping metacharacter...

Using the same example as Evaluating a NodeList in an XML document, here is how you would make multiple XPath calls efficiently: Given the following XML document: <documentation> <tags> <tag name="Java"> <topic name="Regular expression...

In this case, you want to have the expression compiled before the evaluations, so that each call to evaluate does not compile the same expression. The simple syntax would be: XPath xPath = XPathFactory.newInstance().newXPath(); //Make new XPath XPathExpression exp = xPath.compile("/documentat...