Referencing another's Class CardLayout to add cards.

Question

Hi, thanks for having a look at my question.
I had some working code where the Frame was created in the main. Trying out MVC pattern with simple password screen.
I used to create the CardLayout in the main and pass both the frame reference and the cardLayout reference (and a view) to another (controller)class where the view was added to the frame and the cardLayout. No complaints sofar.
I then decided to put the frame in it's own class. In this class the layout is also set to cardLayout.
In the main where I now (still) pass the reference for the frame reference I feel no need to pass the cardLayout reference.
I thought I should be able to refer to the cardLayout by knowing the frame reference.
However, the compiler does not appreciate my formulation. (As a newbie I tried a dozen 'combinations' already to no avail)
I would appreciate if you could help me out here. I have the offending code snippets below, the error at the bottom.
KR WimE
The Main:
import java.awt.*;
import java.awt.event.*;
public class Main {
    public static void main(String[] args) {
          Frame frame = new MVCFrame("Frame");
          MVCModelLogin     mvcModelLogin     = new MVCModelLogin();
          MVCView_Login     mvcView_Login     = new MVCView_Login(mvcModelLogin);
          MVCContrLogin     mvcContrLogin     = new MVCContrLogin(frame, mvcModelLogin, mvcView_Login);
          frame.setVisible(true);
          System.out.println("Main - ended");
    }     The Frame:
import java.awt.*;
import java.awt.event.*;
public class MVCFrame extends Frame {
     public CardLayout cardLayout = new CardLayout();
     public MVCFrame (String title) {
          super(title);
          this.setLayout(cardLayout);
          this.setBounds(64,100,1024,768);
     public void pushStackCardLayoutShow(MVCView_Login view,java.lang.String title) {
          this.add(view, title);
          cardLayout.addLayoutComponent(this, title);          
}The Controller:
import java.awt.*;
import java.awt.event.*;
public class MVCContrLogin {
     private Frame frame;
     private MVCModelLogin model;
     private MVCView_Login  view;
     public MVCContrLogin(Frame frame, MVCModelLogin model, MVCView_Login view)
          System.out.println("Constructor - Controller - Login");
          this.model     = model;
          this.view     = view;
          frame.pushStackCardLayoutShow(view, "mvcView_Login");
//     the offending line:
//   _MVCContrLogin.java:29: cannot find symbol : method pushStackCardLayoutShow(MVCView_Login,java.lang.String)_

Answer 1

You are referencing the MVCFrame as a Frame in MVCContrLogin. A Frame does not have the method pushStackCardLayoutShow. Change the reference type to MVCFrame.
Kaj