Attr getAttributeNodeNS(String namespaceURI, String localName);
namespaceURI
The URI that uniquely identifies the namespace of this attribute, or null for no namespace.
localName
The identifier that specifies the name of the attribute within its namespace.
The Attr node whose descendants represent the value of the specified attribute, or null if this element has no such attribute.
This method works like getAttributeNode( ), except that the attribute is specified by the combination of a namespace URI and a local name defined within that namespace. This method is useful only with XML documents that use namespaces.