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/**
* This example is to show the unmarshalling of a Javabean with setters
* but no getters.
*
* Author: Sekhar Vajjhala
*
* $Id: Main.java,v 1.2 2009-11-11 14:17:30 pavel_bucek Exp $
*/
/**
* OBSERVATIONS:
*
* 1. The Javabean USAddress contains getters but not setters. I
* first thought that an unmarshal call would fail. However, it
* succeeded. Then I remembered that JAXBRI is unmarshalling using
* fields. However this may not be clear to a newbie JAXB 2.0
* user and is therefore worth clarifying.
*
* 2. If AccessType.PROPERTY is the default, then the above
* unmarshalling would be expected to fail (probably an
* exception).
*
* 3. An attempt to unmarshal into a JAXBElement instance resulted in
* a ClassCastException.
* Exception in thread "main" java.lang.ClassCastException: USAddress
* at Main.main(Main.java:36)
*
* Note the way I hit this problem was that I copied the
* unmarshal-read sample where the the unmarshal call was cast
* to JAXBElement instance. However, I chose to use the
* @XmlRootElement on USAddress but forgot to cast the return type
* of the Unmarshaller.unmarshal to USAddress.
*
*/
import java.io.FileInputStream;
import java.io.IOException;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBElement;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Unmarshaller;
public class Main {
public static void main( String[] args ) {
try {
/**
* Create a JAXBContext passing it a list of classes to be
* marshalled.
*/
JAXBContext jc = JAXBContext.newInstance(USAddress.class);
// create an Unmarshaller
Unmarshaller u = jc.createUnmarshaller();
// unmarshal a USAddress instance annotated with XmlRootElement.
// JAXBElement<?> addrElement = (JAXBElement<?>)u.unmarshal( new FileInputStream( "po.xml" ) );
// USAddress usaddr = (USAddress) addrElement.getValue();
USAddress usaddr = (USAddress) u.unmarshal( new FileInputStream( "po.xml" ) );
displayAddress(usaddr);
System.out.println("");
} catch( JAXBException je ) {
je.printStackTrace();
} catch( IOException ioe ) {
ioe.printStackTrace();
}
}
public static void displayAddress( USAddress address ) {
// display the address
System.out.println( "\t" + address.getName() );
System.out.println( "\t" + address.getStreet() );
}
}