Programmering A (Java) Hjälp!!

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

public class Burgerkingorder extends JFrame {
	
		private JLabel label;
		private JPanel bakgrund, p1, p2;
		private CardLayout cl;
		
	public Burgerkingorder() {
			setLayout(new FlowLayout());
		
		//konstruktor	
		label = new JLabel("Have it your way!");
		add(label);
		
	}
		public JPanel createJPanels(){
			bakgrund = new JPanel();
			p1 = new JPanel();				//ändrade BPanel1 till JPanel.
			p1.setBackground(Color.blue);
			p2 = new JPanel();				//ändrade BPanel2 till JPanel.
			p2.setBackground(Color.blue);
			cl = new CardLayout();
			bakgrund.setLayout(cl);
			bakgrund.add(p1,"FF1");
			bakgrund.add(p2, "xxx");
			return bakgrund;
	}
	
		//nedan följer fönstrets egenskaper
		public static void main (String args[]){
			
		Burgerkingorder gui = new Burgerkingorder();
		gui.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		gui.setSize(202,270);
		gui.setVisible(true);
		gui.setTitle("Välkommen till Burgerking!");
		
		/*MenuBar = själva raden, Menu = kategorierna (ex. arkiv, redigera), 
		 MenuItem = underkategorierna (ex. importera, avsluta)*/
		 
		JMenuBar meny = new JMenuBar();
		gui.setJMenuBar(meny);
		
		JMenu arkiv = new JMenu("Arkiv");
		meny.add(arkiv);
		JMenuItem burgare = new JMenuItem("Burgare");
		arkiv.add(burgare);
		
		JMenuItem drycker = new JMenuItem("Drycker");
		arkiv.add(drycker);

		JMenu help = new JMenu("Hjälp");
		meny.add(help);
		JMenuItem about = new JMenuItem("Om...");
		help.add(about);
		
		}
		class listener implements ActionListener{
			public void actionPerformed (ActionEvent ae){
				if(ae.getActionCommand().equals("Burgare")){
					System.out.println("Burgare");
					cl.show(bakgrund, "Burgare");
				}
				else if(ae.getActionCommand().equals("Drycker")){
					System.out.println("Drycker");
					cl.show(bakgrund, "Drycker");
				}
			}
			
		}
		
	}

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

public class BPanel1 extends JPanel {
	
	private JLabel yourway, klicka, kostnad;
	private JCheckBox whopper, bigking, angus, cheeseburger;
	private JComboBox whopperantal, bigkingantal, angusantal, cheeseburgerantal;
	private JButton b1 = new JButton("Prisfakta");
	private JTextField pris;
	private JButton b2 = new JButton("Beställ");
	private JPanel panel = new JPanel();
	private toDoListener toDo;
	
	public BPanel1(){
		
		whopper = new JCheckBox("Whopper");
		add(whopper);
		
		String[] whopperantal = { "1", "2", "3" };
		JComboBox whoppercombo = new JComboBox(whopperantal);
		add(whoppercombo);
		
		bigking = new JCheckBox("Big King XXL");
		add(bigking);
		
		String[] bigkingantal = { "1", "2", "3" };
		JComboBox bigkingcombo = new JComboBox(bigkingantal);
		add(bigkingcombo);
		
		angus = new JCheckBox("The Angus");
		add(angus);
		
		String[] angusantal = { "1", "2", "3" };
		JComboBox anguscombo = new JComboBox(angusantal);
		add(anguscombo);
		
		cheeseburger = new JCheckBox("Cheeseburger");
		add(cheeseburger);
		
		String[] cheeseburgerantal = { "1", "2", "3", "4", "5" };
		JComboBox cheeseburgercombo = new JComboBox(cheeseburgerantal);
		add(cheeseburgercombo);
		
		klicka = new JLabel("Klicka för pris");
		add(klicka);
		
		b1 = new JButton("Kostnad");
		add(b1);
		b1.addActionListener(new toDoListener());
		
		kostnad = new JLabel("________");
		add(kostnad);
		
		b2 = new JButton("Beställ!");
		add(b2);
		
		add(panel);
		panel.setLayout(new GridLayout(2, 5));
	}
		

	
	public class toDoListener implements ActionListener {
			public void actionPerformed(ActionEvent e) {
				kostnad.setText("50 SEK");
		}
	}
		
}