import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
public class Main {
public static String getChildText(Element parent, String childName) {
NodeList list = parent.getElementsByTagName(childName);
if (list.getLength() > 1) {
throw new IllegalStateException("Multiple child elements with name " + childName);
} else if (list.getLength() == 0) {
return null;
}
Element child = (Element) list.item(0);
return getText(child);
}
public static String getText(Element element) {
StringBuffer buf = new StringBuffer();
NodeList list = element.getChildNodes();
boolean found = false;
for (int i = 0; i < list.getLength(); i++) {
Node node = list.item(i);
if (node.getNodeType() == Node.TEXT_NODE) {
buf.append(node.getNodeValue());
found = true;
}
}
return found ? buf.toString() : null;
}
}
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