Re: Help with program

Knute Johnson <>
Wed, 29 Apr 2009 15:07:55 -0700
Knute Johnson wrote:

Jeff wrote:

"Knute Johnson" <> wrote in message

Jeff B wrote:

Hi everyone,

I have another question on a whole new projet that i am working on.
I created a connect for using just the command line and it worked
fine, so the second half the assignment was to then create a
graphical game board using swing and awt. I got the table created
so i then preceeded to try and put the two together. I have got it
to where the game board comes up but when you push the column button
idicating which column you would like to place your move in the
whole board fills will checkers it does not stop and wait for the
next move?
Can someone please look at what I have done? I have looked and
looked and compared to my original game code for the command line
and what I could not figure out was where to put a couple of my do
while statements.

I have attached the file as test3 java, i guess i will need to post
the images also, anyway thanks for any help.





I compiled your program but it did not display a game board and
pressing the buttons produced nothing. It's a little big to go
wading through without some idea of what your real question is. You
might start with something simpler and post your questions one piece
at a time.


Knute Johnson
email s/nospam/knute2009/

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Hi Knute,

Thanks for the response!! I think that maybe why it did not show any
of the graphics is that i ihad them in a folders called images and
the code pointed to that location so if you did not have them in that
folder that might be why it did not display.

I believe I have fould most of my errors and have it mostly working.

I found that I had integrated the actual game code correctly as i
continued to push the buttons i got the confirmations for wins, it was
the display that ended up being the problem.
What was happening is when i pused a column number to indiacte which
column to drop the checker the board would then display all spaces
filled with the red checker and when i pushed
the column again they would all change to black so the switch player
was working. I put in some break statements and i started just
getting single columns or single rows filled
I had the display board in three places , in the win, in the tie, or
just place the next move if statments so i removed all three of those
instances and called to display the new move once right before the if
statements and that fixed my problem it started displaying the
individual moves in the correct column / row.
However i have my math wrong when i called the method to paint the
icons as i started playing upside down, it placed the checkers at the
top and worked its way down.
I could not figure out the math to correctly place the checker so I
created anothe method to swap the numbers 6 = 1 5 = 2 etc. and that
fixed my problem.

So now the only thing i am trying to figure out now is how to clear
the game and reset it for a fresh game. the closest i have come is to
reset the underlying board and variables and then call
T3=new test3 to create a new instance which works but what it does is
just start a new window on top of the other and not actually clear and

I hope this makes sense of what i am trying to explain. I just wanted
you (and other readers) to know what I had found thus far.

Thank you so much for looking into this.



You could just turn all the spots back to gray to reset the board.

Another way to do this would be to keep your matrix in an array or what
ever and paint the board and the checkers where needed. That way when
you wanted to restart the game, you could just clear the matrix and
redraw your board. Or if you want to use components for your places on
the board you could set them to draw themselves gray when the game is


Here's one way to do a simple game.

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class TTT extends JPanel {
     enum Mark { X, O, BLANK, DRAW };
     Mark[] mark = new Mark[9];
     boolean player = true;

     public TTT() {
         setPreferredSize(new Dimension(400,300));

         for (int i=0; i<mark.length; i++)
             mark[i] = Mark.BLANK;

         addMouseListener(new MouseAdapter() {
             public void mouseClicked(MouseEvent me) {
                 int row = 0;
                 int col = 0;
                 if (me.getX() < getWidth()/3)
                     col = 0;
                 else if (me.getX() < getWidth()*2/3)
                     col = 1;
                     col = 2;
                 if (me.getY() < getHeight()/3)
                     row = 0;
                 else if (me.getY() < getHeight()*2/3)
                     row = 1;
                     row = 2;
                 int index = row * 3 + col;
                 if (mark[index] == Mark.BLANK) {
                     if (player)
                         mark[index] = Mark.X;
                         mark[index] = Mark.O;
                     player = !player;

                     Mark m = checkForWin();
                     if (m != Mark.BLANK) {
                         String msg = null;
                         if(m == Mark.DRAW)
                             msg = "Game is a Draw";
                             msg = "Winner is " + m.toString();
                         for (int i=0; i<mark.length; i++)
                             mark[i] = Mark.BLANK;
                         player = true;

     public void paintComponent(Graphics g) {
         Font f = new Font("Monospaced",Font.PLAIN,getHeight()/4);
         FontMetrics fm = g.getFontMetrics();


         for (int i=0; i<mark.length; i++) {
             String c = null;
             switch (mark[i]) {
                 case X: c = "X"; break;
                 case O: c = "O"; break;
                 case BLANK: c = " "; break;

     Mark checkForWin() {
         if (mark[0] == mark[1] && mark[1] == mark[2] &&
          mark[0] != Mark.BLANK) {
             return mark[0];
         } else if (mark[3] == mark[4] && mark[4] == mark[5] &&
          mark[3] != Mark.BLANK) {
             return mark[3];
         } else if (mark[6] == mark[7] && mark[7] == mark[8] &&
          mark[6] != Mark.BLANK) {
             return mark[6];
         } else if (mark[0] == mark[4] && mark[4] == mark[8] &&
          mark[0] != Mark.BLANK) {
             return mark[0];
         } else if (mark[2] == mark[4] && mark[4] == mark[6] &&
          mark[2] != Mark.BLANK) {
             return mark[2];
         } else if (mark[0] == mark[3] && mark[3] == mark[6] &&
          mark[0] != Mark.BLANK) {
             return mark[0];
         } else if (mark[1] == mark[4] && mark[4] == mark[7] &&
          mark[1] != Mark.BLANK) {
             return mark[1];
         } else if (mark[2] == mark[5] && mark[5] == mark[8] &&
          mark[2] != Mark.BLANK) {
             return mark[2];

         for (int i=0; i<mark.length; i++)
             if (mark[i] == Mark.BLANK)
                 return Mark.BLANK;

         return Mark.DRAW;

     public static void main(String[] args) {
         EventQueue.invokeLater(new Runnable() {
             public void run() {
                 JFrame f = new JFrame();
                 TTT ttt = new TTT();


Knute Johnson
email s/nospam/knute2009/

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