Can someone help me fix my dots and boxes program. I need the counter to actually work, the quit button acts as a forefit button, when square should be filled, the inside isn't by the player who did it$.$ Find any bugs in my code and please fix to make it proper: Here is the big class that contians most of the game logic, the other $4$ are shown in the pictures: public class Grid extends JPanel implements MouseListener $\{$

int height $=480$;

int width $=640$;

int rows $=3$;

int columns $=3$;

int circleRows $=$ rows $+1$;

int circleColumns $=$ columns $+1$;

int area $=$ circleRows $*$ circleColumns;

int firstPlayerMatches;

int secondPlayerMatches;

ArrayList circles;

ArrayList lines;

ArrayList squares;

MCircle firstCircle $=$ null;

MCircle secondCircle $=$ null;

Color currentPlayerColor $=$ Color.blue;

public Grid$()\{$

addMouseListener$($this$)$;

circles $=$ new ArrayListarea$)$;

lines $=$ new ArrayList;

squares $=$ new ArrayList;

int xStart $=($width $-($circleColumns $-1)*80)/2$;

int yStart $=($height $-($circleRows $-1)*80)/2$;

int x $=$ xStart;

int y $=$ yStart;

for $($int i $=0$; i $$ circleRows; i$++)\{$

for $($int j $=0$; j $$ circleColumns; j$++)\{$

circles.add$($new MCircle$($x$,$ y$))$;

x $+=80$;

$\}$

y $+=80$;

x $=$ xStart;

$\}$

setPreferredSize$($new Dimension$($width$,$ height$))$;

setBackground$($Color$.$white$)$;

$\}$

public void mouseClicked$($MouseEvent mouse$)\{$

int x $=$ mouse.getX$()$;

int y $=$ mouse.getY$()$;

for $($MCircle circle : circles$)\{$

if $($circle$.$contains$($x$,$ y$))\{$

if $($firstCircle $==$ null$)\{$

firstCircle $=$ circle;

firstCircle.setColor$($currentPlayerColor$)$;

$\}$ else if $($secondCircle $==$ null && circle $!=$ firstCircle && firstCircle.isAdjacent$($circle$))\{$

secondCircle $=$ circle;

secondCircle$.$setColor$($currentPlayerColor$)$;

MLine line $=$ new MLine$($firstCircle$,$ secondCircle$,$ currentPlayerColor$)$;

lines.add$($line$)$;

boolean boxFormed $=$ checkForBox$($line$)$;

if $(!$boxFormed$)\{$

switchPlayer$()$;

$\}$

firstCircle $=$ null;

secondCircle $=$ null;

repaint$()$;

$\}$

break;

$\}$

$\}$

$\}$

private void switchPlayer$()\{$

currentPlayerColor $=($currentPlayerColor $==$ Color.blue$)?$ Color.red : Color.blue;

$\}$

private boolean checkForBox$($MLine newLine$)\{$

boolean boxFormed $=$ false;

for $($MCircle circle : circles$)\{$

int x $=$ circle.xLoc;

int y $=$ circle.yLoc;

MLine$[]$ possibleLines $=\{$

new MLine$($circle$,$ getCircleAt$($x $+80,$ y$),$ currentPlayerColor$),$

new MLine$($circle$,$ getCircleAt$($x$,$ y $+80),$ currentPlayerColor$),$

new MLine$($getCircleAt$($x $+80,$ y$),$ getCircleAt$($x $+80,$ y $+80),$ currentPlayerColor$),$

new MLine$($getCircleAt$($x$,$ y $+80),$ getCircleAt$($x $+80,$ y $+80),$ currentPlayerColor$)$

$\}$;

if $($lines$.$contains$($possibleLines$[0])$ && lines.contains$($possibleLines$[1])$ &&

lines.contains$($possibleLines$[2])$ && lines.contains$($possibleLines$[3]))\{$

MSquare square $=$ new MSquare$($possibleLines$[0],$ possibleLines$[1],$ possibleLines$[2],$ possibleLines$[3])$;

square.setColor$($currentPlayerColor$)$;

squares.add$($square$)$;

boxFormed $=$ true;

if $($currentPlayerColor $==$ Color.blue$)\{$

firstPlayerMatches$++$;

$\}$ else $\{$

secondPlayerMatches$++$;

$\}$

$\}$

$\}$

return boxFormed;

$\}$

private MCircle getCircleAt$($int x$,$ int y$)\{$

for $($MCircle circle : circles$)\{$

if $($circle$.$xLoc $==$ x && circle.yLoc $==$ y$)\{$

return circle;

$\}$

$\}$

return null;

$\}$

public void mousePressed$($MouseEvent mouse$)\{\}$

public void mouseReleased$($MouseEvent mouse$)\{\}$

public void mouseEntered$($MouseEvent mouse$)\{\}$

public void mouseExited$($MouseEvent mouse$)\{\}$

public void paintComponent$($Graphics brush$)\{$

super.paintComponent$($brush$)$;

for $($MCircle circle : circles$)\{$

circle.draw$(($Graphics$2$D$)$ brush$)$;

$\}$

for $($MLine line : lines$)\{$

line.draw$(($Graphics$2$D$)$ brush$)$;

$\}$

for $($MSquare square : squares$)\{$

square.draw$(($Graphics$2$D$)$ brush$)$;

$\}$

brush.setFont$($new Font$("$Monospaced$",$ Font.BOLD, $25))$;

brush.setColor$($Color$.$blue$)$;

brush.drawString$("$Player $1$ Score: $"+$ firstPlayerMatches, $10,40)$;

brush.setColor$($Color$.$red$)$;