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

public class Rutenett {

    static String sinTur = "X";
    

    public static void main(String[] args) {
        JFrame vindu = new JFrame("Rutenett");
        vindu.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        JPanel panel = new JPanel(new GridLayout(3, 3));

        for (int i = 1; i <= 9; i++) {
            Rute nyKnapp = new Rute(i+"");
            panel.add(nyKnapp);
        }

        vindu.add(panel);

        vindu.pack();
        vindu.setVisible(true);
    }
}



class Rute2 extends JButton {

    class Klikk implements ActionListener {

        @Override
        public void actionPerformed(ActionEvent e) {
            if (Rutenett.sinTur.equals("X")) {
                setText("X");
                Rutenett.sinTur = "O";
            }
            else {
                setText("O");
                Rutenett.sinTur = "X";
            }
            
        }
    }


    Rute2(String tegn) {
        super(tegn);
        addActionListener(new Klikk());
    }
}