Tickets.java

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

public class GUI extends JFrame {
    JPanel left = new JPanel(new GridLayout(3,2,5,5));
    JPanel right = new JPanel(new GridLayout(8,1));
    JRadioButton boxes [] = new JRadioButton[6];
    String country [] = {"Jordan", "Palestine", "Egypt", "Algeria", "Saudi Arabia", "Mauritania" };
    JButton clear = new JButton("Clear");
    String tickets [] = {"one ticket", "two ticket", "three tickets"};
    JComboBox comTickets = new JComboBox(tickets);
    ButtonGroup group = new ButtonGroup(); // important,, buttongroup



    public GUI() throws HeadlessException {
        for (int i = 0; i < boxes.length; i++) {
            boxes[i] = new JRadioButton(country[i]);
            left.add(boxes[i]);
            group.add(boxes[i]);
        }
        right.add(comTickets,BorderLayout.NORTH);
        clear.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                group.clearSelection();
            }
        });
        add(clear,BorderLayout.SOUTH);
        add(left,BorderLayout.WEST);
        add(right);

        setTitle("Tickets");
        setVisible(true);
        setLocationRelativeTo(null);
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        setSize(500,300);



    }
}