Java: riportare in Reflection-Mode una serie di operazioni

import com.ulcjava.container.servlet.client.ConnectorCommandException;


....


    if ((reason instanceof ConnectorException) && (reason.getCause() instanceof ConnectorCommandException) ) {
        ConnectorCommandException cause = (ConnectorCommandException) reason.getCause();
        if (cause.getResponseInfo().getResponseCode() == 500) {
        JOptionPane.showMessageDialog(getOwner(), "La sessione non è più attiva.","La sessione non è più attiva.", JOptionPane.ERROR_MESSAGE);
        return;
        }
       
    }




-------------------- Con Reflection ----------------
Nota...senza import!!

try {
        Class connector_command_exception = Class.forName(CONNECTOR_COMMAND_EXCEPTION);

        if ((reason instanceof ConnectorException) && (connector_command_exception.isInstance(reason.getCause())) ) {
        Object causeInstance = reason.getCause();
        Method responseInfoMethod = causeInstance.getClass().getMethod("getResponseInfo");
        Object responseCodeInstance = responseInfoMethod.invoke(causeInstance, new Object[]{});
        Method responseCodeMethod = responseCodeInstance.getClass().getMethod("getResponseCode");
        int cause=((Integer)responseCodeMethod.invoke(responseCodeInstance, new Object[]{})).intValue();
        if (cause == 500) {
            JOptionPane.showMessageDialog(getOwner(), "Sessione utente terminata.","La sessione utente è terminata.", JOptionPane.ERROR_MESSAGE);
            return;
        }
        }
    } catch (ClassNotFoundException e) {
        e.printStackTrace();
    } catch (SecurityException e) {
        e.printStackTrace();
    } catch (NoSuchMethodException e) {
        e.printStackTrace();
    } catch (IllegalArgumentException e) {
        e.printStackTrace();
    } catch (IllegalAccessException e) {
        e.printStackTrace();
    } catch (InvocationTargetException e) {
        e.printStackTrace();
    }