transform a String into an org.w3c.dom.Document

loadXMLFromString.java

import org.w3c.dom.Document;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.xml.sax.InputSource;

public static Document loadXMLFromString(String xml) {
    DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
    try {
        DocumentBuilder documentBuilder = documentBuilderFactory.newDocumentBuilder();
        InputSource inputSource = new InputSource(new StringReader(xml));
        return documentBuilder.parse(inputSource);
    } catch (ParserConfigurationException|SAXException|IOException e) {
        e.printStackTrace();
    }
    return null;
}