Tic Tac Toe game

Tic Tac Toe Game In Java

Tic Tac Toe game program in java

TicTacToe.java

public class TicTacTOe {
  int _row=3;
char _board[][]=new char[_row][_row];
public void makeBoard(){
for (int i = 0; i <_row; i++) {
for (int j = 0; j < _row; j++) {
_board[i][j]='o';
}

}
}
boolean isValid(int r,int c){
return((r>=0&&r<_row)&&(c>=0&&c<_row));
}
boolean isFill(int r,int c){
return(_board[r][c]!='o');
}
public boolean gamePlay(int r ,int c,int playerNo){
if (!(isValid(r,c))) {
System.out.println("Enter Correct index");
return true ;
}
if (isFill(r,c)) {
System.out.println("This index already fill");
return true;
}
if (playerNo==1) {
_board[r][c]='*';
} else {
        _board[r][c]='+';
}
return false;
}

boolean horizontalAndVerticalMatch(char ch,int n){
// for row and col math
    boolean flag=true;
for (int i = 0; i < _row; i++) {
   flag=true;
  for (int j = 0; j < _row; j++) {
  System.out.println("i="+i+"j="+j);
  char ch1=(n==1)?_board[i][j]:_board[j][i];
         if (ch1!=ch) {
         System.out.println("y");
flag=false;
break;
}
 }
  if (flag) {
  return flag;
}
}
return flag;
}
boolean majorDiagonal(char ch){
return((_board[0][0]==ch)&&(_board[1][1]==ch)&&(_board[2][2]==ch));
}
boolean minorDiagonal(char ch){
return((_board[2][0]==ch)&&(_board[1][1]==ch)&&(_board[0][2]==ch));
}
public boolean isGameOver(int PlayerNo){
char ch;
if (PlayerNo==1) {
ch='*';
} else {
ch='+';
}
return(horizontalAndVerticalMatch(ch,1)||horizontalAndVerticalMatch(ch,2)||majorDiagonal(ch)||minorDiagonal(ch));
}
public void display(){
for (int i = 0; i <_row; i++) {
for (int j = 0; j < _row; j++) {
System.out.print("     "+_board[i][j]);
}
System.out.println("");
}
}

}

MainTicTacToe.java

import java.util.Scanner;

public class MainTicTacToe extends TicTacTOe {

 public static void main(String[] args) {

TicTacTOe obj=new TicTacTOe();

obj.makeBoard();

obj.display();

int r,c;

Scanner input=new Scanner(System.in);

while(true){

boolean flag=true;

while(flag){

System.out.println("Player 1");

System.out.println("enter row");

r=input.nextInt();

System.out.println("enter col");

c=input.nextInt();

flag=obj.gamePlay(r,c,1);

}

if (obj.isGameOver(1)) {

obj.display();

System.out.println("Player 1 Win Game");

break;

}

System.out.println("============");

obj.display();

flag=true;

while(flag){

System.out.println("Player 2");

System.out.println("enter row");

r=input.nextInt();

System.out.println("enter col");

c=input.nextInt();

flag=obj.gamePlay(r,c,2);

}

if (obj.isGameOver(2)) {

obj.display();

System.out.println("Player 2 Win Game");

break;

}

System.out.println("============");

obj.display();

}

}

}