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

class GridSmile {

    private static int rad = 2, kolonne = 3;

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

        JPanel panel = new JPanel();
        lagerGrid(panel);
        vindu.add(panel);

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

    private static void lagerGrid(JPanel panel){

        class SmileKnapp extends JButton{
            private String tall, smilefjes = ":))";

            public SmileKnapp(String tall){
                super(tall);
                this.tall = tall;
                addActionListener(new SmileKnappAction());
            }

            class SmileKnappAction implements ActionListener{

                @Override
                public void actionPerformed(ActionEvent event){
                    if(getText().equals(smilefjes)){
                        setText(tall);
                        return;
                    }
                    setText(smilefjes);
                }
            }
        }

        panel.setLayout(new GridLayout(rad, kolonne));
        for(int i = 1; i <= rad*kolonne; i++){
            SmileKnapp knapp = new SmileKnapp(Integer.toString(i));
            panel.add(knapp);
        }
    }
    
}