import java.awt.EventQueue;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
public class Main extends JFrame {
	int counter = 0;
	public Main(){
		setSize(800,800);
		setVisible(true);
		setTitle("Kółko i Krzyżyk");
		setLayout(new GridLayout(3,3));
		for (int i=1;i<=9;i++){
			JButton button = new JButton("");
			add(button);
			button.addActionListener(new ActionListener(){
				@Override
				public void actionPerformed(ActionEvent e) {
					JButton button = (JButton) e.getSource();
					if ( counter % 2 ==0){
						button.setText("X");
					System.out.println("X");
					}
					else{
						button.setText("O");
						System.out.println("O");
					}
					button.setEnabled(false);
					counter++;
				}
			});
		}
	}
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                new Main();
            }
        });
	}
}