สวัสดีครับ ผมจะสร้างการสั่งอาหารขึ้นมาอะครับแต่พอผมติกทุกอย่างแล้วมันไม่คำนวณเงินออกมาไห้ผมควรทำอย่างไรอะครับ
นี้รูปประกอบครับ http://www.mx7.com/view2/AeCBUXhWmXzCXaAL
นี้ครับcode
import java.awt.EventQueue;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JCheckBox;
import javax.swing.JRadioButton;
import javax.swing.ButtonGroup;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class BBQ2 extends JFrame
{
    JCheckBox cbox1 = new JCheckBox("Bacon 2$");
    JCheckBox cbox2 = new JCheckBox("pork 2$");
    JCheckBox cbox3 = new JCheckBox("Beef 2$");

    JRadioButton radio101 = new JRadioButton("Size 1 1$");
    JRadioButton radio102 = new JRadioButton("Size 2 2$");
    JRadioButton radio103 = new JRadioButton("Size 3 3$");

    JRadioButton radio201 = new JRadioButton("Coke 2$");
    JRadioButton radio202 = new JRadioButton("Tea 2$");
    JRadioButton radio203 = new JRadioButton("Water 1$");

    JLabel label01 = new JLabel("");

    public static void main(String[] args)
    {
        EventQueue.invokeLater(new Runnable()
        {
            public void run()
            {
                BBQ2 frame = new BBQ2();
                frame.setVisible(true);
            }
        });
    }

    public BBQ2()
    {
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setBounds(100, 100, 300, 250);
        setTitle("BBQ2");
        getContentPane().setLayout(null);

        // Panel  1
        JPanel panel1 = new JPanel();
        panel1.setBounds(0, 0, 100, 100);
        panel1.setBorder(BorderFactory.createTitledBorder("Topping"));
        panel1.setLayout(new GridLayout(0, 1));
        
        panel1.add(cbox1);
        panel1.add(cbox2);
        panel1.add(cbox3);
        getContentPane().add(panel1);

        // Panel 2
        JPanel panel2 = new JPanel();
        panel2.setBounds(100, 0, 100, 100);
        panel2.setBorder(BorderFactory.createTitledBorder("Size"));
        panel2.setLayout(new GridLayout(0, 1));
        ButtonGroup radiogroup1 = new ButtonGroup();
        radiogroup1.add(radio101);
        radiogroup1.add(radio102);
        radiogroup1.add(radio103);
        panel2.add(radio101);
        panel2.add(radio102);
        panel2.add(radio103);
        getContentPane().add(panel2);

        // Panel 3
        JPanel panel3 = new JPanel();
        panel3.setBounds(200, 0, 100, 100);
        panel3.setBorder(BorderFactory.createTitledBorder("Drink"));
        panel3.setLayout(new GridLayout(0, 1));
        ButtonGroup radiogroup2 = new ButtonGroup();
        radiogroup2.add(radio201);
        radiogroup2.add(radio202);
        radiogroup2.add(radio203);
        panel3.add(radio201);
        panel3.add(radio202);
        panel3.add(radio203);
        getContentPane().add(panel3);

        // Panel 4
        JPanel panel4 = new JPanel();
        panel4.setBounds(0, 100, 300, 50);
        panel4.setBorder(BorderFactory.createTitledBorder(""));
        panel4.setLayout(new GridLayout(0, 1));
        JButton button01 = new JButton("Process Selection");
        button01.addActionListener(new ActionListener() {
           @Override
           public void actionPerformed(ActionEvent e)
            {
               String st= "";
               if(cbox1.isSelected()){ st=st+"2$"; }
               if(cbox2.isSelected()){ st=st+"2$"; }
               if(cbox3.isSelected()){ st=st+"2$"; }
                label01.setText(st);            }
        });
        panel4.add(button01);
        getContentPane().add(panel4);
              
    
        // Panel 5
        
        JPanel panel5 = new JPanel();
        panel5.setBounds(0, 150, 300, 50);
        panel5.setBorder(BorderFactory.createTitledBorder(""));
        panel5.setLayout(new GridLayout(0, 1));
        panel5.add(label01);
        getContentPane().add(panel5);

    }
}