Tic Tac Toe class Write a fifth game program that can play

Tic Tac Toe class - Write a fifth game program that can play Tic Tac Toe.

•This game displays the lines of the Tic Tac Toe game and prompts the player to choose a move.

•The move is recorded on the screen and the computer picks his move from those that are left.

•The player then picks his next move.

•The program should allow only legal moves.

•The program should indicate when there is a winner and tell who won.

•The player is then asked if he would like to play again.

•A sample output is shown in the attached file.

Solution

mport java.util.*;

public class TicTacToeGame
{
private int counter;
private char posn[]=new char[10];
private char player;
  
  
public static void main(String args[])
{
String ch;
TicTacToeGame Toe=new TicTacToeGame();
do{
Toe.beginBoard();
Toe.play_game();
System.out.println (\"Would you like to play again (Enter \'Y\')? \");
Scanner in =new Scanner(System.in);
ch=in.nextLine();
System.out.println(\"ch value is \"+ch);
}while (ch.equals(\"Y\"));
  
  
}
public void beginBoard()
{
  
char posndef[] = {\'0\',\'1\', \'2\', \'3\', \'4\', \'5\', \'6\', \'7\', \'8\', \'9\'};
int i;
counter = 0;
player = \'X\';
for (i=1; i<10; i++) posn[i]=posndef[i];
presentBoard();
  
  
}
public String presentBoard()
{
System.out.println( \"\ \ \" );
System.out.println( \"\ \ \" );
System.out.println( \"\ \ \\t\\t\" + posn [1] + \" | \" +posn [2]+ \" | \" +posn [3]);
System.out.println( \" \\t\\t | | \" );
System.out.println( \" \\t\\t ___|____|___ \" );
System.out.println( \"\ \ \\t\\t\" +posn [4]+ \" | \" +posn [5]+ \" | \" +posn [6]);
System.out.println( \" \\t\\t | | \" );
System.out.println( \" \\t\\t ___|____|___ \" );
System.out.println( \"\ \ \\t\\t\" +posn [7]+ \" | \" +posn [8]+ \" | \" +posn [9]);
System.out.println( \" \\t\\t | | \" );
System.out.println( \" \\t\\t | | \" );
System.out.println( \"\ \ \" );
return \"presentBoard\";
}
  
public void play_game()
{
int spot;
char blank = \' \';
  
System.out.println( \"Player \" + getPlayer() +\" will go first and be the letter \'X\'\" );
  
do {
presentBoard();
  
System.out.println( \"\ \ Player \" + getPlayer() +\" choose a posn.\" );
  
boolean posTaken = true;
while (posTaken) {
  
Scanner in =new Scanner (System.in);
spot=in.nextInt();
posTaken = checkPosn(spot);
if(posTaken==false)
posn[spot]=getPlayer();
}
  
System.out.println( \"Nice move.\" );
  
presentBoard();
  
nextPlayer();
}while ( getWinner() == blank );
  
}
  
public char getWinner()
{
char Winner = \' \';
  
// Check if X wins
if (posn[1] == \'X\' && posn[2] == \'X\' && posn[3] == \'X\') Winner = \'X\';
if (posn[4] == \'X\' && posn[5] == \'X\' && posn[6] == \'X\') Winner = \'X\';
if (posn[7] == \'X\' && posn[8] == \'X\' && posn[9] == \'X\') Winner = \'X\';
if (posn[1] == \'X\' && posn[4] == \'X\' && posn[7] == \'X\') Winner = \'X\';
if (posn[2] == \'X\' && posn[5] == \'X\' && posn[8] == \'X\') Winner = \'X\';
if (posn[3] == \'X\' && posn[6] == \'X\' && posn[9] == \'X\') Winner = \'X\';
if (posn[1] == \'X\' && posn[5] == \'X\' && posn[9] == \'X\') Winner = \'X\';
if (posn[3] == \'X\' && posn[5] == \'X\' && posn[7] == \'X\') Winner = \'X\';
if (Winner == \'X\' )
{System.out.println(\"Player1 wins the game.\" );
return Winner;
}
  
// Check if O wins
if (posn[1] == \'O\' && posn[2] == \'O\' && posn[3] == \'O\') Winner = \'O\';
if (posn[4] == \'O\' && posn[5] == \'O\' && posn[6] == \'O\') Winner = \'O\';
if (posn[7] == \'O\' && posn[8] == \'O\' && posn[9] == \'O\') Winner = \'O\';
if (posn[1] == \'O\' && posn[4] == \'O\' && posn[7] == \'O\') Winner = \'O\';
if (posn[2] == \'O\' && posn[5] == \'O\' && posn[8] == \'O\') Winner = \'O\';
if (posn[3] == \'O\' && posn[6] == \'O\' && posn[9] == \'O\') Winner = \'O\';
if (posn[1] == \'O\' && posn[5] == \'O\' && posn[9] == \'O\') Winner = \'O\';
if (posn[3] == \'O\' && posn[5] == \'O\' && posn[7] == \'O\') Winner = \'O\';
if (Winner == \'O\' )
{
System.out.println( \"Player2 wins the game.\" );
return Winner; }
  

for(int i=1;i<10;i++)
{
if(posn[i]==\'X\' || posn[i]==\'O\')
{
if(i==9)
{
char Draw=\'D\';
System.out.println(\" Game is stalemate \");
return Draw;
}
continue;
}
else
break;
  
}
  
return Winner;
}
  
public boolean checkPosn(int spot)
{
  
  
if (posn[spot] == \'X\' || posn[spot] == \'O\')
{
System.out.println(\"That posn is already taken, please choose another\");
return true;
}
else {
return false;
}
  
// counter++;
  
}
  
  
  
public void nextPlayer()
{
if (player == \'X\')
player = \'O\';
else player = \'X\';
  
}
  
public String getTitle()
{
return \"Tic Tac Toe\" ;
}
  
public char getPlayer()
{
return player;
}
  
}