Tic_Tac_Toe.java

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

class TicTacToeGameinSwing implements ActionListener
{
    JFrame frame = new JFrame();
    JPanel t_panel = new JPanel(); // top_panel
    JPanel bt_panel = new JPanel(); // bottom panel
    JLabel textfield = new JLabel();
    JButton[] bton = new JButton[9];
    int chance_flag = 0;
    Random random = new Random();
    boolean pl1_chance;

    // Creating class constructor for creating grid
    TicTacToeGameinSwing()
    {
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(500, 500);
        frame.getContentPane().setBackground(new Color(250, 184, 97));
        frame.setTitle("Tic Tac Toe Game in Swing");
        frame.setLayout(new BorderLayout());
        frame.setVisible(true);

        textfield.setBackground(new Color(0,0,0));
        textfield.setForeground(new Color(150,0,0));
        textfield.setFont(new Font("Serif", Font.BOLD, 35));
        textfield.setHorizontalAlignment(JLabel.CENTER);
        textfield.setOpaque(true);

        t_panel.setLayout(new BorderLayout());
        t_panel.setBounds(0, 0, 0, 0);

        bt_panel.setLayout(new GridLayout(3, 3));
        bt_panel.setBackground(new Color(0, 0, 0));

        for (int i = 0; i < 9; i++)
        {
            bton[i] = new JButton();
            bt_panel.add(bton[i]);
            bton[i].setFont(new Font("Serif", Font.BOLD, 100));
            bton[i].setFocusable(false);
            bton[i].addActionListener(this); // for the event of pressing this button.
            bton[i].setBackground(Color.LIGHT_GRAY);
        }

        t_panel.add(textfield);
        frame.add(t_panel, BorderLayout.SOUTH);
        frame.add(bt_panel);

        startGame();
    }

    // Creating method to start the game and decide the chance
    public void startGame()
    {
        try
        {
            textfield.setText("Tic Tac Toe Game");
            Thread.sleep(4000);
        }
        catch (InterruptedException e)
        {
            e.printStackTrace();
        }
        int chance=random.nextInt(100);

        if (chance%2 == 0)
        {
            pl1_chance = true;
            textfield.setText("Player X turn");
        }
        else
        {
            pl1_chance = false;
            textfield.setText("Player O turn");
        }
    }

    public void gameOver(String s) // what to do when game is over.
    {
        chance_flag = 0;
        Object[] option={"Restart","Exit"};
        int n=JOptionPane.showOptionDialog(frame, "Game Over\n"+s,"Game Over", JOptionPane.YES_NO_CANCEL_OPTION, JOptionPane.QUESTION_MESSAGE, null, option, option[0]);
        if(n==0)
        {
            frame.dispose();
            new TicTacToeGameinSwing();
        }
        else
        {
            frame.dispose();
        }

    }

    // Creating method for checking winning conditions
    public void matchCheck()
    {
        if ((bton[0].getText() == "X") && (bton[1].getText() == "X") && (bton[2].getText() == "X"))
        {
            xWins(0, 1, 2);
        }
        else if ((bton[0].getText() == "X") && (bton[4].getText() == "X") && (bton[8].getText() == "X"))
        {
            xWins(0, 4, 8);
        }
        else if ((bton[0].getText() == "X") && (bton[3].getText() == "X") && (bton[6].getText() == "X"))
        {
            xWins(0, 3, 6);
        }
        else if ((bton[1].getText() == "X") && (bton[4].getText() == "X") && (bton[7].getText() == "X"))
        {
            xWins(1, 4, 7);
        }
        else if ((bton[2].getText() == "X") && (bton[4].getText() == "X") && (bton[6].getText() == "X"))
        {
            xWins(2, 4, 6);
        }
        else if ((bton[2].getText() == "X") && (bton[5].getText() == "X") && (bton[8].getText() == "X"))
        {
            xWins(2, 5, 8);
        }
        else if ((bton[3].getText() == "X") && (bton[4].getText() == "X") && (bton[5].getText() == "X"))
        {
            xWins(3, 4, 5);
        }
        else if ((bton[6].getText() == "X") && (bton[7].getText() == "X") && (bton[8].getText() == "X"))
        {
            xWins(6, 7, 8);
        }

        else if ((bton[0].getText() == "O") && (bton[1].getText() == "O") && (bton[2].getText() == "O"))
        {
            oWins(0, 1, 2);
        }
        else if ((bton[0].getText() == "O") && (bton[3].getText() == "O") && (bton[6].getText() == "O"))
        {
            oWins(0, 3, 6);
        }
        else if ((bton[0].getText() == "O") && (bton[4].getText() == "O") && (bton[8].getText() == "O"))
        {
            oWins(0, 4, 8);
        }
        else if ((bton[1].getText() == "O") && (bton[4].getText() == "O") && (bton[7].getText() == "O"))
        {
            oWins(1, 4, 7);
        }
        else if ((bton[2].getText() == "O") && (bton[4].getText() == "O") && (bton[6].getText() == "O"))
        {
            oWins(2, 4, 6);
        }
        else if ((bton[2].getText() == "O") && (bton[5].getText() == "O") && (bton[8].getText() == "O"))
        {
            oWins(2, 5, 8);
        }
        else if ((bton[3].getText() == "O") && (bton[4].getText() == "O") && (bton[5].getText() == "O"))
        {
            oWins(3, 4, 5);
        } else if ((bton[6].getText() == "O") && (bton[7].getText() == "O") && (bton[8].getText() == "O"))
        {
            oWins(6, 7, 8);
        }
        else if(chance_flag==9)
        {
            textfield.setText("Game Draw!!");
            gameOver("Game Draw!!");
        }
    }

    // Method to print that Player X wins
    public void xWins(int x1, int x2, int x3)
    {
        bton[x1].setBackground(Color.YELLOW);
        bton[x2].setBackground(Color.YELLOW);
        bton[x3].setBackground(Color.YELLOW);

        for (int i = 0; i < 9; i++)
        {
            bton[i].setEnabled(false);
        }
        textfield.setText("Player X wins");
        gameOver("Player X Wins");
    }

    // Method to print that Player O wins
    public void oWins(int x1, int x2, int x3)
    {
        bton[x1].setBackground(Color.YELLOW);
        bton[x2].setBackground(Color.YELLOW);
        bton[x3].setBackground(Color.YELLOW);

        for (int i = 0; i < 9; i++)
        {
            bton[i].setEnabled(false);
        }
        textfield.setText("Player O Wins");
        gameOver("Player O Wins");
    }

    // Method for performing action after every turn
    @Override
    public void actionPerformed(ActionEvent e)
    {
        for (int i = 0; i < 9; i++)
        {
            if (e.getSource() == bton[i])
            {
                if (pl1_chance)
                {
                    if (bton[i].getText() == "") // if button not pressed yet.
                    {
                        bton[i].setForeground(new Color(210, 10, 10));
                        bton[i].setText("X");
                        pl1_chance = false;
                        textfield.setText("O turn");
                        chance_flag++;
                        matchCheck();
                    }
                }
                else
                {
                    if (bton[i].getText() == "") // if button not pressed yet.
                    {
                        bton[i].setForeground(new Color(0, 100, 9));
                        bton[i].setText("O");
                        pl1_chance = true;
                        textfield.setText("X turn");
                        chance_flag++;
                        matchCheck();
                    }
                }
            }
        }
    }
}

// Driver code
public class Tic_Tac_Toe
{
    public static void main(String[] args) throws Exception
    {
        new TicTacToeGameinSwing();
    }
}