Tic-tac-toe

Tic-tac-toe (or Noughts and crosses, Xs and Os) is a paper-and-pencil game for two players, X and O, who take turns marking the spaces in a 3×3 grid. The player who succeeds in placing three respective marks in a horizontal, vertical, or diagonal row wins the game.

Here is a Java Code for making Tic-tac-toe by the help of JFrame

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

public class TicTacToe extends JFrame implements ActionListener {
private int[][] winCombinations = new int[][] {
{0, 1, 2}, {3, 4, 5}, {6, 7, 8},
{0, 3, 6}, {1, 4, 7}, {2, 5, 8},
{0, 4, 8}, {2, 4, 6}
};
Font f1 = new Font(“Times New Roman”, 1, 72);

JMenuBar bar;
JMenu jm1;
JMenuItem jt1,jt2;
JButton buttons[] = new JButton[9];
int flg = 0;
String letter = “”;
boolean win = false;

public TicTacToe(){

setLayout(new GridLayout(1,1));

bar=new JMenuBar();
jm1=new JMenu(“File”);
jt1=new JMenuItem(“New”);
jt2=new JMenuItem(“Exit”);

add(bar);
jm1.add(jt1);
jm1.addSeparator();
jm1.add(jt2);
add(jm1);
bar.add(jm1);

setVisible(true);
setSize(400,400);

setLayout(new GridLayout(3,3));

for(int i=0; i<=8; i++){
buttons[i] = new JButton();

add(buttons[i]);
buttons[i].addActionListener(this);
}

setVisible(true);
}

public void actionPerformed(ActionEvent a) {
flg++;

if(flg % 2 == 0){
letter = "O";
} else {
letter = "X";
}

JButton pressedButton = (JButton)a.getSource();
pressedButton.setFont(f1);
pressedButton.setBackground(Color.cyan);

pressedButton.setText(letter);

pressedButton.setEnabled(false);

for(int i=0; i<=7; i++){
if( buttons[winCombinations[i][0]].getText().equals(buttons[winCombinations[i][1]].getText()) &&
buttons[winCombinations[i][1]].getText().equals(buttons[winCombinations[i][2]].getText()) &&
buttons[winCombinations[i][0]].getText() != ""){
win = true;
}
}

if(win == true){
JOptionPane.showMessageDialog(null, letter + " wins the game!");
System.exit(0);
} else if(flg == 9 && win == false){
JOptionPane.showMessageDialog(null, "The game was tie!");
System.exit(0);
}
}

public static void main(String[] args){
TicTacToe starter = new TicTacToe();
}
}

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Result

Download Source Code

Tic Tac Toe