Network error IDException: failed to connect to /ANDRESPCSQLEXPRESS
(port 1433): connect failed: ENETUNREACH (Network is unreachable)

Attempt to invoke interface method
'java.sql.PreparedStatementjava.sql.Conn
ection.prepareStatement(java.lang.String)'
on a null object reference

public Connection conexionBD() {
        Connection conexion = null;
        try{
            StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
            StrictMode.setThreadPolicy(policy);
            Class.forName("net.sourceforge.jtds.jdbc.Driver").newInstance();
            conexion = DriverManager.getConnection("jdbc:jtds:sqlserver://ANDRESPC\SQLEXPRESS;databasename=speedex1;user=andres;password=123;");

        }
        catch (Exception e) {
            Toast.makeText(getApplicationContext(), e.getMessage(), Toast.LENGTH_LONG).show();
        }
        return conexion;
    }

public void consultarPaquete() {
        try {
            PreparedStatement pat = conexionBD().prepareStatement("SELECT es.estado, en.fechaLlegada, t.transporte, en.precioTotal FROM estado es, envio en, medioTransporte t WHERE es.estadoId = en.estadoId AND t.transporteId = en.transporteId AND en.envioId = ?");
            pat.setInt(1, Integer.parseInt(envio));
            pat.executeUpdate();
            ResultSet rs = pat.executeQuery();
            if(rs.next()){
                //asignandole a los atributos de la clase

                estado = rs.getString(1);
                fecha = rs.getString(2);
                transporte = rs.getString(3);
                precio = rs.getDouble(4);
            }
            //cerrando conexion
            pat.close();

            Toast.makeText(getApplicationContext(), "Consulta exitosa", Toast.LENGTH_LONG).show();
        }
        catch (Exception ex) {
            Toast.makeText(getApplicationContext(), ex.getMessage(), Toast.LENGTH_LONG).show();
        }
    }

public void ejecutarConsulta(View view) {

    consultarPaquete();
    System.out.println("El estado es " + estado + "/n" + "La fecha es " + fecha + "/n" + "El tipo de transporte es " + transporte + "/n" + "El precio es " + precio);
}