Lightweight Java persistence

static final long serialVersionUID = 1L;

JAXBContext jc = JAXBContext.newInstance( "com.acme.foo" );

    // unmarshal from foo.xml
    Unmarshaller u = jc.createUnmarshaller();
    FooObject fooObj = (FooObject)u.unmarshal( new File( "foo.xml" ) );

    // marshal to System.out
    Marshaller m = jc.createMarshaller();
    m.marshal( fooObj, System.out );

Serializer serializer = new Persister();
MyObject object = serializer.read(MyObject.class, new File("file.xml));

serializer.write(myInstance, new File("file.xml"));