JFrame Components not being displayed

Question

I am attempting to add components to a JFrame but the only thing being displayed is my ImageIcon when I run GameMenu.java. I have instantiated setVisible(); specifically after I have set my frame or added components to the panels or menubars. So I'm unsure as to why no components are showing up. I think it may have something to do with my formatting or main method.

Here are my two classes:

GameMenu.java:

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JFrame;
import javax.swing.ImageIcon;
import javax.swing.JLabel;

public class GameMenu{

    public static void main(String[] args) {
        FrameCaller obj = new FrameCaller();
    }

}

class FrameCaller extends JFrame {

    public FrameCaller(){
        setLayout(new FlowLayout());
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        add(new JLabel(new ImageIcon("logo.png")));
        pack();
        setLocationRelativeTo(null);

        JMenuBar mb = new JMenuBar();
            JMenu m1 = new JMenu("Game List");
            JMenu m2 = new JMenu("Help");
            JMenu m3 = new JMenu("Stats");
                mb.add(m1);
                mb.add(m2);
                mb.add(m3);
        JMenuItem showRulesButton = new JMenuItem("View game rules");
        m2.add(showRulesButton);
        JMenuItem m77 = new JMenuItem("View past game stats");
        m3.add(m77);
        mb.setVisible(true);

        JPanel panel = new JPanel();
            JButton newGameButton = new JButton("New Game");
            newGameButton.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    new inGameFrame();
                    dispose();
                }
            });
        panel.add(newGameButton);

        panel.setVisible(true);
        setVisible(true);

    }




}

EightOff.java:

import javax.swing.*;



public class EightOff {

    public static void main(String[] args)
    {
        inGameFrame obj = new inGameFrame();
    }
}

    class inGameFrame extends JFrame
    {
        public inGameFrame() {
            setLayout(new FlowLayout());
            setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            pack();
            setLocationRelativeTo(null);
            setVisible(true);

        }


    }

Any tips would be wonderful. Thanks.