Java Utililty Methods XML DocumentBuilder Create

if (db == null) {
    DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
    dbf.setValidating(false);
    dbf.setIgnoringComments(true);
    dbf.setFeature("http://xml.org/sax/features/namespaces", false);
    dbf.setFeature("http://xml.org/sax/features/validation", false);
    dbf.setFeature("http://apache.org/xml/features/nonvalidating/load-dtd-grammar", false);
    dbf.setFeature("http://apache.org/xml/features/nonvalidating/load-external-dtd", false);
...

DocumentBuilder builder = documentBuilder.get();
if (builder == null) {
    try {
        builder = documentBuilderFactory.newDocumentBuilder();
    } catch (ParserConfigurationException e) {
        throw new RuntimeException(e);
    documentBuilder.set(builder);
...

DocumentBuilderFactory domFactory = DocumentBuilderFactory.newInstance();
domFactory.setNamespaceAware(NamespaceAwareness);
domFactory.setAttribute("http://apache.org/xml/features/dom/include-ignorable-whitespace", Boolean.FALSE);
return domFactory.newDocumentBuilder();

String feature;
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
feature = "http://xml.org/sax/features/external-general-entities";
factory.setFeature(feature, false);
feature = "http://xml.org/sax/features/external-parameter-entities";
factory.setFeature(feature, false);
feature = "http://apache.org/xml/features/nonvalidating/load-external-dtd";
factory.setFeature(feature, false);
...

return DOCUMENT_BUILDER_FACTORY;

String oldDbfImpl = System.getProperty(DBF_SYSTEM_PROPERTY);
System.setProperty(DBF_SYSTEM_PROPERTY, JAVA_INTERNAL_DBF_CLASS);
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
if (oldDbfImpl != null) {
    System.setProperty(DBF_SYSTEM_PROPERTY, oldDbfImpl);
} else {
    System.getProperties().remove(DBF_SYSTEM_PROPERTY);
return dbf;

if (documentBuilderFactory == null) {
    documentBuilderFactory = DocumentBuilderFactory.newInstance();
return documentBuilderFactory;

DocumentBuilderFactory factory = DocumentBuilderFactory
        .newInstance("org.apache.xerces.jaxp.DocumentBuilderFactoryImpl", null);
return factory;

if (documentBuilderFactory == null) {
    documentBuilderFactory = DocumentBuilderFactory.newInstance();
    documentBuilderFactory.setNamespaceAware(true);
    documentBuilderFactory.setExpandEntityReferences(false);
return documentBuilderFactory;

DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setNamespaceAware(isNamespaceAware);
return dbf;