Java: Create multiple content panes and switch between them

Question

I am creating my first Java GUI application and I want to have multiple screen/panes. So far I have created two Java froms. One is called HomeInterface.form and the other is called RestockInterface.form.

However, I want to switch between both JPanels by clicking the buttons. The problem here is, I don't know how to implement this probably. At the moment everytime I click the Button backToHomeInterfaceButton a new JFrame get created. Also, I have to create a new HomeInterface object in order to get the rootPanel. This is ridiculous.

Do you guys know how I can implement this probably without creating a new object and frame each time? I want to keep the same frame and just switch between the different rootPanels without creating a new one each time.

Please keep in mind, I don't want to use CardLayout or TabbedLayout, I am using the IntelliJ GridLayout and want to keep this!

HomeInterface.form code:

public class HomeInferface{
    private JPanel rootPanel;
    private JButton thisIsMyButtonButton;
    private JPanel test;

    public HomeInferface(){
        JFrame frame = new JFrame("Beispiel Frame");
        frame.setSize(500, 500);
        frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
        frame.add(rootPanel);
        frame.setVisible(true);

        thisIsMyButtonButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                SellInterface sellInterface = new SellInterface();
                frame.setContentPane(sellInterface.getRootPanel());
                frame.revalidate();
            }
        });

        public JPanel getRootPanel() {
            return rootPanel;
        }
    }
}

RestockForm.form:

public class RestockInterface {
    private JPanel rootPanel;
    private JButton backToHomeInterfaceButton;

    public RestockInterface(JFrame frame) {
        backToHomeInterfaceButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                HomeInferface homeInterface = new HomeInferface();                    
                frame.setContentPane(homeInterface.getRootPanel());
                frame.revalidate();
            }
        });
    }

    public JPanel getRootPanel() {
        return rootPanel;
    }
}