Connect Four

import java.awt.event.MouseListener;
import java.awt.event.MouseEvent;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Toolkit;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import javax.swing.Timer;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.Random;

import javax.swing.ImageIcon;
import javax.swing.JPanel;
import javax.imageio.*;
import java.awt.image.*;
import java.io.*;


public class Board  extends JPanel implements Runnable, MouseListener
{
boolean ingame = true;
private Dimension d;
int BOARD_WIDTH=500;
int BOARD_HEIGHT=500;
//deleted x value
//NEW
 int[][] cells = new int[6][7];//row col
 
    int xCell;
    int yCell;
    int turn = 1;
 
BufferedImage img;
String message = "Click Board to Start";
 private Thread animator;

 
    public Board()
    {
          addKeyListener(new TAdapter());
         addMouseListener(this);
        setFocusable(true);
        d = new Dimension(BOARD_WIDTH, BOARD_HEIGHT);
        setBackground(Color.black);
       
           /*         
             try {
                img = ImageIO.read(this.getClass().getResource("mount.jpg"));
            } catch (IOException e) {
                 System.out.println("Image could not be read");
            // System.exit(1);
            }
            */
            if (animator == null || !ingame) {
            animator = new Thread(this);
            animator.start();
            }
                    
  
        setDoubleBuffered(true);
    }
    
    public void paint(Graphics g)
{
super.paint(g);

g.setColor(Color.white);
g.fillRect(0, 0, d.width, d.height);
//g.fillOval(x,y,r,r);

//NEW

int x = 0;
int y = 0;
int r = 50;
int space = 60;
for(int row = 0; row<cells.length; row++){
    for(int col = 0; col<cells[0].length; col++){
       if(cells[row][col]==0)
             g.setColor(Color.blue);
           else if (cells[row][col]==1)
                 g.setColor(Color.red);
                else
                 g.setColor(Color.yellow);
           g.fillOval(x,y,r,r);
      x += space;
}
   y += space;
   x = 0;
}

        Font small = new Font("Helvetica", Font.BOLD, 14);
        FontMetrics metr = this.getFontMetrics(small);
        g.setColor(Color.black);
       g.setFont(small);
        g.drawString(message, 10, d.height-60);

    if (ingame) {
        
    
        
       
        
    // g.drawImage(img,0,0,200,200 ,null);
     
    
   
    }
Toolkit.getDefaultToolkit().sync();
g.dispose();
}
private class TAdapter extends KeyAdapter {

public void keyReleased(KeyEvent e) {
     int key = e.getKeyCode();
     
}

public void keyPressed(KeyEvent e) {
//System.out.println( e.getKeyCode());
   // message = "Key Pressed: " + e.getKeyCode();
    int key = e.getKeyCode();
        if(key==39){
          
        }
        
       

}

}

  public void placeChip(int col){
      
         for(int i = cells.length - 1; i>-1; i--){
              if( cells[i][col]==0){
                  cells[i][col] = turn;
                     
                  if(turn==1)
                      turn=2;
                    else
                     turn=1;
                  break;
                }
            }
    }
    
   


public void mousePressed(MouseEvent e) {
    int x = e.getX();
     int y = e.getY();
     //New
     xCell = (x/60) + 1;
     yCell = (y/60) + 1;
     
    // message = xCell + " " + yCell;
     
     placeChip(xCell-1);

}

public void mouseReleased(MouseEvent e) {

}

public void mouseEntered(MouseEvent e) {

}

public void mouseExited(MouseEvent e) {

}

public void mouseClicked(MouseEvent e) {

}

public void run() {

long beforeTime, timeDiff, sleep;

beforeTime = System.currentTimeMillis();
 int animationDelay = 50;
 long time = 
            System.currentTimeMillis();
    while (true) {//infinite loop
     // spriteManager.update();
      repaint();
      try {
        time += animationDelay;
        Thread.sleep(Math.max(0,time - 
          System.currentTimeMillis()));
      }catch (InterruptedException e) {
        System.out.println(e);
      }//end catch
    }//end while loop

    


}//end of run

}//end of class