App.java

import java.util.Scanner;

public class App {
   class Main {
        public static void main(String[] args) {
        char board [][]= new char[3][3];
        for(int row  =0 ; row < board.length ; row++){
            for (int col = 0; col < board[row].length; col++) {
                board[row][col] = ' ';
            }
        }

        char player = 'X';
        boolean gameOver = false ;
        Scanner sc = new Scanner(System.in) ;
        int count = 0 ;
        

        while (!gameOver && count <= 9) {
            printBoard(board);
            System.out.print("palyer1 : " + player + " enter position :- ");
            int row = sc.nextInt() ;
            int col = sc.nextInt() ;
            System.out.println();
            if (board[row][col] == ' '){
                board[row][col] = player;
                gameOver = haveWon(board , player) ;
                if (gameOver){
                    System.out.print("player : " + player + " has won : ");
                }
                else{
                    player = (player == 'X') ? 'O' : 'X' ;
                }
            }
            else {
                System.out.println("Invalid move , Try Again !... ");
                if (count < 9){
                    count--;
                }
            }
            count++;
        }
        printBoard(board);
    }

    public static void printBoard ( char board[][]) {
        for(int row  =0 ; row < board.length ; row++){
            System.out.print(" | ");
            for (int col = 0; col < board[row].length; col++) {
                System.out.print( board[row][col] + " | ");    
            }
            System.out.println();
        }
    }
    public static boolean haveWon (char board [][] , char player){
        for(int row  =0 ; row < board.length ; row++){
            if (board[row][0] == player && board[row][1] == player && board[row][2] == player){
                return true ;
            }     
        }

        for(int col  =0 ; col < board.length ; col++){
            if (board[1][col] == player && board[2][col] == player && board[2][col] == player){
                return true ;
            }     
        }

        if (board[0][0] == player  && board[1][1]  == player && board[2][2] == player){
            return true ;  
        }
        if (board[0][2] == player  && board[1][1]  == player && board[2][0] == player){
            return true ;  
        }

        return false ;
    }


   }
}