ONLY ONE THING TO MODIFIED WITH CODE. CODE IS PROVIDED! Below is a tic tac toe game between two players. Please help me add a way to ask the user if they want to play again if they choose to. If they want to, then the game loops. If not then the game terminates. PLEASE HELP!!!!

import java.util.Scanner; public class TicTacToe { /* * Declare instance variables */ private char[][] board; //the game board, a 2D array private boolean xTurn; //true if X's turn, false if O's turn private Scanner keyboard; //Scanner for reading things in from keyboard /* * Constructor, sets things up for the game to run */ public TicTacToe() { //create the board board = new char[3][3]; //initialize the board to all spaces for(int r = 0; r < 3; r++) { for(int c = 0; c < 3; c++) board[r][c] = ' '; } //it's X's turn when we start xTurn = true; //create our keyboard object keyboard = new Scanner(System.in); } /* * Displays a single row of the game board specified by the row parameter */ private void displayRow(int row) { System.out.println(" " + board[row][0] + " | " + board[row][1] + " | " + board[row][2]); } /* * Displays the entire game board */ private void displayBoard() { displayRow(0); System.out.println("-----------"); displayRow(1); System.out.println("-----------"); displayRow(2); } /* * Displays the basic menu options available to the user */ private void displayMenu() { //print whose turn it is if(xTurn) System.out.println("X's Turn!"); else System.out.println("O's Turn!"); //print the options menu System.out.println("What would you like to do?"); System.out.println("1: Make a move"); System.out.println("2: Start Over"); System.out.println("3: Quit"); System.out.print("Choice: "); } /* * Gets the position from the user of where the next move should be made * The board is then updated with a valid move * * Returns true if there is a winner and false if there is no winner * */ private boolean getMove() { boolean invalid = true; int row = 0, column = 0; //keep asking for a position until the user enters a valid one while(invalid) { System.out.println("Which row, column would you like to move to? Enter two numbers between 0-2 separated by a space to indicate position."); row = keyboard.nextInt(); column = keyboard.nextInt(); //check that the position is within bounds if(row >= 0 && row <= 2 && column >= 0 && column <= 2) { //check that the position is not already occupied if(board[row][column] != ' ') System.out.println("That position is already taken"); else invalid = false; } else System.out.println("Invalid position"); } //fill in the game board with the valid position if(xTurn) board[row][column] = 'X'; else board[row][column] = 'O'; return winner(row,column); } /* * Starts the game over by resetting variables */ private void restart() { //empty the game board for(int r = 0; r < 3; r++) { for(int c = 0; c < 3; c++) board[r][c] = ' '; } //reset whose turn it is xTurn = true; } /* * Given the row and column where the last move was made, this method * return true if the move resulted in a win and false otherwise */ private boolean winner(int lastR, int lastC) { boolean winner = false; //assume there's no winner char symbol = board[lastR][lastC]; //the symbol for the last move either X or O //check left-right //the last move we made was in the row lastR, check that row for three of the same symbol int numFound = 0; for(int c = 0; c < 3; c++) { if(board[lastR][c] == symbol) numFound++; } if(numFound == 3) winner = true; //check up-down //the last move we made was in the column lastC, check that column for three of the same symbol numFound = 0; for(int r = 0; r < 3; r++) { if(board[r][lastC] == symbol) numFound++; } if(numFound == 3) winner = true; //check both diagonals numFound = 0; for(int i = 0; i < 3; i++) { if(board[i][i] == symbol) numFound++; } if(numFound == 3) winner = true; numFound = 0; for(int i = 0; i < 3; i++) { if(board[i][2-i] == symbol) numFound++; } if(numFound == 3) winner = true; return winner; } /* * Checks whether the board is full and the game is over * * Return true if full and false otherwise */ private boolean boardFull() { //find the number of spots that are occupied by either an X or an O int numSpotsFilled = 0; for(int r = 0; r < 3; r++) { for(int c = 0; c < 3; c++) { if(board[r][c] == 'X' || board[r][c] == 'O') numSpotsFilled++; } } return numSpotsFilled == 9; } /* * Main entry point to the game. Starts the game. */ public void play() { while(true) { displayBoard(); displayMenu(); int choice = keyboard.nextInt(); if(choice == 1) { if(getMove()) { //we have a winner! displayBoard(); //display board one last time if(xTurn) System.out.println("X Wins!"); else System.out.println("O Wins!"); System.exit(0); } else if(boardFull()) { //we have a draw displayBoard(); //display board one last time System.out.println("Draw!"); System.exit(0); } else { //no winner yet xTurn = !xTurn; //switch whose turn it is } } else if(choice == 2) restart(); else if(choice == 3) System.exit(0); //quit else System.out.println("Invalid Option"); } } public static void main(String[] args) { TicTacToe game = new TicTacToe(); game.play(); } }