import javax.swing.*;
import java.awt.*;

public class Main
{
    public static void main(String[] args)
    {
        ProgramFrame programFrame = new ProgramFrame();
        ProgramMenu programMenu = new ProgramMenu();

        programFrame.setProgramFrame();
        programMenu.setProgramMenu();
    }
}

public class ProgramFrame
{
    private JFrame frame;

    public void setProgramFrame()
    {
        frame = new JFrame("");

        frame.setIconImage(new ImageIcon("res/IconImage.png").getImage());
        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        frame.setExtendedState(Frame.MAXIMIZED_BOTH);
        frame.setLayout(new GridBagLayout());
        frame.setVisible(true);
    }

    public JFrame getFrame()
    {
        return frame;
    }
}

public class ProgramMenu
{
    private JButton menuPlayButton;

    public void setProgramMenu()
    {
        setProgramMenuButtons();
    }

    private void setProgramMenuButtons()
    {
        setMenuPlayButton();
    }

    private void setMenuPlayButton()
    {
        menuPlayButton = new JButton();

        new ProgramFrame().getFrame().add(menuPlayButton);
    }
}