Hi! i´ve been searching and searching through forums because it seems this problem is very common, but none of the solutions i´ve seen so far suits me, so i´m here looking for some help because i´ve been stuck one week with this. First of all sorry if my english isn´t the best... i´m a bit rusty...

Well, i had some code that worked perfectly, but i needed to perform some changes because i needed the servlet to send more info to the applet, and here started the problems, when i made the changes it started to throw EOFException when i was trying to read the InputStream, and furthermore when i came back to the original code it started to throw the exception in the same place too :banghead:

So here i am... don´t know what to do now and i entrust to you to give me some tips.

Here comes some code.

Applet:
Code:
    	public ListasComponentesSeleccionables cargarListasComponentes( ) throws IOException, ClassNotFoundException {
		
		String serv = "/Desaladora/cargarListasComponentesApplet.do";
		String host = Principal.documentBase.getHost( );
		
		URL direccion = new URL( "http", host, 8080, serv );
		// Create conection
		URLConnection connection = direccion.openConnection( );
		
		connection.setDoInput( true );  
		connection.setDoOutput( true ); 
		connection.setUseCaches( false ); 
		
		connection.setRequestProperty( "Content-Type", "application/x-java-serialized-object" );

		ObjectOutputStream output;
		output = new ObjectOutputStream( connection.getOutputStream( ) );
		
		output.writeObject( new Boolean(true) );
		
		output.flush( );
		output.close( );
		
		
		ObjectInputStream input = new ObjectInputStream( connection.getInputStream( ) ); //<-- Here is the problem
		ListasComponentesSeleccionables response = new ListasComponentesSeleccionables( );
		
		response = ( ListasComponentesSeleccionables ) input.readObject( );
		
		return response;
	}
Servlet:
Code:
    
public class CargarListasComponentesAppletAction extends Action {

	
public ActionForward execute(	ActionMapping mapping,
			                             	ActionForm form,
			                             	HttpServletRequest request,
			                             	HttpServletResponse response ) throws ServletException, IOException, Exception  {

		InitialContext context = new InitialContext();
		SensorManagerService sensor_service;
		ActuatorManagerService actuator_service;
		

		Globals.LOGGER_SECURITY.debug( "Entering ACTION 'CargarListasComponentesAppletAction'" );

		response.setContentType("application/x-java-serialized-object");
		
		try
		{
	
			ObjectInputStream bufferentrada = new ObjectInputStream(request.getInputStream());
			
			Boolean peticionOK = (Boolean)bufferentrada.readObject();
			
			
			ObjectOutputStream buffersalida = new ObjectOutputStream(response.getOutputStream());
			
			
			sensor_service = ( SensorManagerService ) context.lookup( "desaladora/SensorManagerServiceBean/local" );
			ArrayList<AlarmConnectedSensorDTO> sensorList = sensor_service.findAllSensorsToAlarms();
			
			actuator_service = ( ActuatorManagerService ) context.lookup( "desaladora/ActuatorManagerServiceBean/local" );
			ArrayList<AlarmConnectedActuatorDTO> actuatorList = actuator_service.findAllActuatorsToAlarms();
			
			
			buffersalida.writeObject( crearListasSeleccionables(sensorList, actuatorList) );
			
			
			buffersalida.flush();
		}
		catch(Exception e)
		{
			System.out.println("Error en la trasmision de datos");
		}
		
		return null;
	}
	
	private ListasComponentesSeleccionables crearListasSeleccionables(ArrayList<AlarmConnectedSensorDTO> sensorList, ArrayList<AlarmConnectedActuatorDTO> actuatorList) {

		Vector<Integer> vectorSensores = new Vector<Integer>();
		Vector<Integer> vectorActuadores = new Vector<Integer>();
		
		for(AlarmConnectedSensorDTO sensor : sensorList) {
			vectorSensores.add(sensor.getIdSensor( ));
		}
		for(AlarmConnectedActuatorDTO actuator : actuatorList) {
			vectorActuadores.add(actuator.getIdActuator( ));
		}
		ListasComponentesSeleccionables listasComponentesSeleccionables = new ListasComponentesSeleccionables(vectorSensores, vectorActuadores);
		
		return listasComponentesSeleccionables;
	}
	
}

Thank you for your time