public class Player $\{$

private boolean human;

private String name;

private Player$($boolean human, String name$)\{$

this.human $=$ human;

this.name $=$ name;

$\}$

public static Player createHuman$($String name$)\{$

return new Player$($true$,$ name$)$;

$\}$

public static Player createComputer$()\{$

return new Player$($false$,"$AI$")$;

$\}$

public boolean isHuman$()\{$

return human;

$\}$

public String getName$()\{$

return name;

$\}$

$\}$

public class TestGames $\{$

public static void main$($String$[]$ args$)\{$

TwoPlayerBoardGame game;

game $=$ new TicTacToe$($Player$.$createHuman$("$Student$"),$ Player.createComputer$())$;

game.play$()$;

game $=$ new TicTacToe$($Player$.$createHuman$("$Roy$"),$ Player.createHuman$("$Moss$"))$;

game.play$()$;

game $=$ new ConnectFour$($Player$.$createHuman$("$Student$"),$ Player.createComputer$())$;

game.play$()$;

game $=$ new ConnectFour$($Player$.$createHuman$("$Jen$"),$ Player.createHuman$("$Moss$"))$;

game.play$()$;

$\}$

$\}$

public final class TicTacToe extends TwoPlayerBoardGame $\{$

private char XO $=\text{'}$X$\text{'}$;

private int row;

private int col;

public TicTacToe$($Player p$1,$ Player p$2)\{$

super$($null$,0,$ p$1,$ p$2)$;

$\}$

public String toString$()\{$

return $""$;

$\}$

protected void askForMove$()\{$

$\}$

protected void receiveMove$()\{$

row $=$ console.nextInt$()$;

col $=$ console.nextInt$()$;

$\}$

protected void generateMove$()\{$

row $=$ Math.abs$($random$.$nextInt$())\%3$;

col $=$ Math.abs$($random$.$nextInt$())\%3$;

$\}$

protected boolean validMove$()\{$

return true;

$\}$

protected void applyMove$()\{$

$\}$

protected boolean someoneWon$()\{$

return false;

$\}$

protected void celebrateMove$()\{$

$\}$

protected void prepareForNextMove$()\{$

$\}$

$\}$

$------------------$

import java.util.Scanner;

import java.util.Random;

public abstract class TwoPlayerBoardGame $\{$

protected static final Scanner console $=$ new Scanner$($System$.$in$)$;

protected static final Random random $=$ new Random$()$;

protected final char$[][]$ board;

private final int MAX$\_$MOVES;

protected Player current;

private Player other;

protected TwoPlayerBoardGame$($char$[][]$ board, int MAX$\_$MOVES, Player p$1,$ Player p$2)\{$

this.board $=$ board;

this.MAX$\_$MOVES $=$ MAX$\_$MOVES;

this.current $=$ p$1$;

this.other $=$ p$2$;

$\}$

public final void play$()\{$

for $($int i $=0$; i $$ MAX$\_$MOVES; $++$i$)\{$

System.out.println$($this$)$;

do $\{$

if $($current$.$isHuman$())\{$

askForMove$()$;

receiveMove$()$;

$\}$

else $\{$

generateMove$()$;

$\}$

$\}$

while $(!$validMove$())$;

applyMove$()$;

if $($someoneWon$())\{$

System.out.println$($this$)$;

celebrateMove$()$;

return;

$\}$

else $\{$

prepareForNextMove$()$;

$\}$

$\}$

System.out.println$($this$)$;

System.out.println$("$It$\text{'}$s a draw."$)$;

$\}$

protected abstract void askForMove$()$;

protected abstract void receiveMove$()$;

protected abstract void generateMove$()$;

protected abstract boolean validMove$()$;

protected abstract void applyMove$()$;

protected abstract boolean someoneWon$()$;

protected abstract void celebrateMove$()$;

protected void prepareForNextMove$()\{$

Player tmp $=$ current;

current $=$ other;

other $=$ tmp;

$\}$

$\}$

public final class ConnectFour extends TwoPlayerBoardGame $\{$

private char RY $=\text{'}$R$\text{'}$;

private int col;

private static final int ROWS $=6$;

private static final int COLS $=7$;

public ConnectFour$($Player p$1,$ Player p$2)\{$

super$($null$,0,$ p$1,$ p$2)$;

$\}$

public String toString$()\{$

return $""$;

$\}$

protected void askForMove$()\{$

$\}$

protected void receiveMove$()\{$

$\}$

protected void generateMove$()\{$

$\}$

protected boolean validMove$()\{$

return true;

$\}$

protected void applyMove$()\{$

$\}$

protected boolean someoneWon$()\{$

return false;

$\}$

protected void celebrateMove$()\{$

$\}$

protected void prepareForNextMove$()\{$

$\}$

$\}$

Open TestGames.java. Understand what it accomplishes.

$($a$)$ Once you have edited TicTacToe.java and ConnectFour.java, this file will allow you to

play Tic$-$Tac$-$Toe and Connect Four against unimpressive AI$.$

$($b$)$ It'll also let two humans play the games against one another.

This will help you to test your games for bugs.

Confirm that you can compile TestGames.java $($which forces the compilation of Player.java,

TwoPlayerBoardGame.java, TicTacToe.java, and ConnectFour.java$).$ As you edit TicTacToe.

java and ConnectFour.java, you should frequently recompile and run Test