<?xml version="1.0"?>
<Employees>
        <Employee>
		<firstname>John</firstname>
		<lastname>Watson</lastname>
		<age>30</age>
		<email>johnwatson@sh.com<;/email>
	</Employee>
	<Employee1>
		<firstname>John</firstname>
		<lastname>Watson</lastname>
		<age>30</age>
		<email>johnwatson@sh.com<;/email>
	</Employee1>
	<Employee2>
		<firstname>Sherlock</firstname>
		<lastname>Homes</lastname>
		<age>32</age>
		<email>sherlock@sh.com<;/email>
	</Employee2>
	<Employee3>
		<firstname>Jim</firstname>
		<lastname>Moriarty</lastname>
		<age>52</age>
		<email>jim@sh.com<;/email>
	</Employee3>
	<Employee4>
		<firstname>Mycroft</firstname>
		<lastname>Holmes</lastname>
		<age>41</age>
		<email>mycroft@sh.com<;/email>
	</Employee4>
        ....
</Employees>

....
XPathFactory xpathfactory = XPathFactory.newInstance();
XPath xpath = xpathfactory.newXPath();
XPathExpression expr = xpath.compile("//Employee");//может есть что-то подобное XPathExpression expr = xpath.compile("//Employee[*]");
....