 jakarta.xml.bind"><code>JAXBContext</code></a>'s mapping of global XML element
 declarations and type definitions to Jakarta XML Binding mapped classes to initiate the 
 unmarshalling of the root element of  XML data.  When the <a href="JAXBContext.html" title="class in jakarta.xml.bind"><code>JAXBContext</code></a>'s 
 mappings are not sufficient to unmarshal the root element of XML data, 
 the application can assist the unmarshalling process by using the 
 <a href="#unmarshalByDeclaredType">unmarshal by 