import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathFactory;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
public class Main {
public static void main(String[] args) throws Exception {
XPath xpath = XPathFactory.newInstance().newXPath();
String xpathExpression = "/howto/topic/@name";
InputSource inputSource = new InputSource("howto.xml");
NodeList nodes = (NodeList) xpath
.evaluate(xpathExpression, inputSource, XPathConstants.NODESET);
int j = nodes.getLength();
for (int i = 0; i < j; i++) {
System.out.println(nodes.item(i).getTextContent());
}
}
}