Problem when sending and receiving data

I am trying to perform two processes using bean, my problem is that I can not find the way these processes are carried out continuously. The first process is to send an object and the second process is the response of it.

@Component
public class Proceso implements InitializingBean{
private static final String XML_SCHEMA_LOCATION = "/proceso/model/schema/proceso.xsd";
private Envio envio;
private Respuesta respuesta;

public void Proceso_envio(Proceso proceso, OutputStream outputstream) throws JAXBException{
  envio.marshal(proceso, outputstream);}

public void Proceso_respuesta(InputStream inputstream) throws JAXBException, FileNotFoundException{
Object obj = unmarshaller.unmarshal(inputStream);
return (Proceso_respuesta) obj;}

@Override
public void afterPropertiesSet() throws Exception{
SchemaFactory schemaFactory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
Schema schema = schemaFactory.newSchema(getClass().getResource(XML_SCHEMA_LOCATION));
JAXBContext jc = JAXBContext.newInstance(Envio.class, Respuesta.class);

this.marshaller = jc.createMarshaller();
this.marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
this.marshaller.setProperty(Marshaller.JAXB_ENCODING, StandardCharsets.UTF_8.displayName());
this.marshaller.setSchema(schema);

this.unmarshaller = jc.createUnmarshaller();

this.unmarshaller.setSchema(schema);
 }

I imagine that with the code my question becomes clearer.