i need help finishing this gomoku assignment. import cs$251.$lab$2.*$;

public class Gomoku implements GomokuInterface $\{$

public int turn $=0$;

private Square$[][]$ board;

private Square currentTurn;

private static final int NUM$\_$OF$\_$COLUMNS $=15$;

private static final int NUM$\_$OF$\_$ROWS $=15$;

private static final int POINTS$\_$TO$\_$WIN $=5$;

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

Gomoku game $=$ new Gomoku$()$;

if $($args$.$length $>0)\{$

game.initComputerPlayer$($args$[0])$;

$\}$

GomokuGUI.showGUI$($game$)$;

$\}$

@Override

public int getNumCols$()\{$

return NUM$\_$OF$\_$COLUMNS;

$\}$

@Override

public int getNumRows$()\{$

return NUM$\_$OF$\_$ROWS;

$\}$

@Override

public int getNumInLineForWin$()\{$

return POINTS$\_$TO$\_$WIN;

$\}$

@Override

public TurnResult handleClickAt$($int row, int col$)\{//$this is what changes the board

TurnResult gamenotover $=$ TurnResult.GAME$\_$NOT$\_$OVER;

TurnResult draw $=$ TurnResult.DRAW;

TurnResult crosswins $=$ TurnResult.CROSS$\_$WINS;

TurnResult ringwins $=$ TurnResult.RING$\_$WINS;

board$[$row$][$col$]=$ currentTurn;

String currentBoard $=$ getCurrentBoardAsString$()$;

System.out.println$("$This is the current board: $"+$ currentBoard $)$;

if $($row $<0||$ row $>=$ NUM$\_$OF$\_$ROWS $||$ col $<0||$ col $>=$ NUM$\_$OF$\_$COLUMNS$)\{$

throw new MyCustomException$("$Illegal move!"$)$;

$\}$

if $($board$[$row$][$col$]!=$ Square.EMPTY$)\{$

System.out.println$("$Square at $("+$ row $+","+$ col $+")$ is already occupied."$)$;

return gamenotover;

$\}$

if$($ hasWinningMove$($ board, row, col, currentTurn $))\{$

System.out.println$("$Player $"+$ currentTurn $+"$ wins!"$)$;

return currentTurn $==$ Square.CROSS $?$ crosswins : ringwins;

$\}$

if$($ boardFull$())\{$

System.out.println$("$It$\text{'}$s a tie! The board is full."$)$;

return draw;

$\}$

turn$++$;

switchTurn$()$;

return gamenotover;

$\}$

@Override

public void initializeGame$()\{$

this.board $=$ new Square$[$NUM$\_$OF$\_$ROWS$][$NUM$\_$OF$\_$COLUMNS$]$;

this.currentTurn $=$ Square.EMPTY;

$\}$

@Override

public String getCurrentBoardAsString$()\{$

StringBuilder squareThing $=$ new StringBuilder$()$;

for $($int r $=0$; r $<$ NUM$\_$OF$\_$COLUMNS; r$++)\{$

for $($int c $=0$; c $<$ NUM$\_$OF$\_$ROWS; c$++)\{$

board$[$r$][$c$]=$ Square.EMPTY;

$\}$

return squareThing.toString$()$;

$\}$

@Override

public Square getCurrentTurn$()\{$

return currentTurn;

$\}$

@Override

public void initComputerPlayer$($String s$)\{$

$\}$

public class MyCustomException extends RuntimeException $\{$

public MyCustomException$($String message$)\{$

super$($message$)$;

$\}$

$\}$

private void switchTurn$()\{$

$\}$

private boolean boardFull$()\{$

$\}$

$\}$