Tic Tac Toe.java

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

public class GUI extends JFrame implements ActionListener {
    JButton[] buttons = new JButton[9];
    int counter = 0;
    String currentPlayer = "X";

    public GUI() {
        setLayout(new GridLayout(3, 3));
        initializeButtons();
        setTitle("Tic Tac Toe Game");
        setSize(500, 500);
        setLocationRelativeTo(null);
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        setVisible(true);
    }

    private void initializeButtons() {
        for (int i = 0; i < 9; i++) {
            buttons[i] = new JButton();
            buttons[i].addActionListener(this);
            add(buttons[i]);
        }
    }

    public void actionPerformed(ActionEvent ae) {
        JButton clickedButton = (JButton) ae.getSource();
        if (clickedButton.getText().equals("")) {
            clickedButton.setText(currentPlayer);
            counter++;
            if (win()) {
                JOptionPane.showMessageDialog(null, currentPlayer + " has won!");
                resetGame();
            } else if (counter == 9) {
                JOptionPane.showMessageDialog(null, "It's a draw!");
                resetGame();
            } else {
                currentPlayer = (currentPlayer.equals("X")) ? "O" : "X";
            }
        }
    }

    private boolean win() {
        for (int i = 0; i < 8; i += 3) {
            if (check(buttons[i], buttons[i + 1], buttons[i + 2])) return true;
        }
        for (int i = 0; i < 3; i++) {
            if (check(buttons[i], buttons[i + 3], buttons[i + 6])) return true;
        }
        if (check(buttons[0], buttons[4], buttons[8])) return true;
        if (check(buttons[2], buttons[4], buttons[6])) return true;
        return false;
    }

    private boolean check(JButton b1, JButton b2, JButton b3) {
        return !b1.getText().equals("") && b1.getText().equals(b2.getText()) && b2.getText().equals(b3.getText());
    }

    private void resetGame() {
        for (JButton button : buttons) {
            button.setText("");
        }
        counter = 0;
        currentPlayer = "X";
    }

}