Deplacer un pion en java

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.Paint;
import java.awt.Point;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.io.File;
import java.io.IOException;

import javax.imageio.ImageIO;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;


public class Dames extends JFrame implements MouseMotionListener,MouseListener {

 private int point;
 private int dx, dy;
 private JButton[] cases=new JButton[64];
 private JPanel pan=new JPanel();
 private Icon iconRecord=new ImageIcon();
 private Icon pionNoir=new ImageIcon("pionNoir.png");
 private Icon pionBlanc=new ImageIcon("pionBlanc.png");
 private Icon pionNoir2=new ImageIcon("pionNoir1.jpg");
 private ImageIcon coco= new ImageIcon("pionNoir.png");
 private JLabel label=new JLabel(coco);
 private final Point pos=new Point();
 public Dames()
 {
  this.setTitle("Jeu de dames");
  this.setSize(660, 680);
  this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  this.setLocationRelativeTo(null);
  this.setVisible(true);
  this.getContentPane().add(pan);
  //addMouseMotionListener(this);
  pan.setLayout(null);
  
  
  
  for (int i=0; i<cases.length;i++)
  {
   cases[i]=new JButton();
   label.addMouseListener(this);
   label.addMouseMotionListener(this);
   cases[i].addMouseMotionListener(this);
   cases[i].addMouseListener(this);
   pan.add(cases[i]);
   pan.add(label);
  
   
  }
  for (int posY=0; posY<641; posY+=80)
  {
   for (int pos=0; pos<64; pos++)
   {
    if (posY==0 && pos%2!=0 && (pos>=0 && pos<=7))
    {
     cases[pos].setIcon(pionBlanc);
    }
    if (posY==80 && pos%2==0 && (pos>7 && pos<=15))
    {
     cases[pos].setIcon(pionBlanc);
    }
    if (posY==160 && pos%2!=0 && (pos>=16 && pos<=23))
    {
     cases[pos].setIcon(pionBlanc);
    }
    if (posY==480 && pos%2==0 && (pos>=40 && pos<=47))
    {
     cases[pos].setIcon(pionNoir);
    }
    if (posY==560 && pos%2!=0 && (pos>47 && pos<=55))
    {
     cases[pos].setIcon(pionNoir);
    }
    if (posY==640 && pos%2==0 && (pos>55 && pos<=63))
    {
     cases[pos].setIcon(pionNoir);
    }
   }
  }
  
  int j=0;
  for (int y=0; y<600; y+=80)
  {
   for (int x=0; x<600; x+=80)
   {
    cases[j].setBounds(x, y, 80, 80);
    
    if (y==0 ||y==160 || y==320 || y==480 || y==640){
     if (j%2==0)
     {
      cases[j].setBackground(Color.YELLOW);
     }
     else{
      cases[j].setBackground(Color.BLACK);
      
      
      } 
    }
    else if (y==80 || y==240 ||y==400 || y==560){
     if (j%2==0)
     {
      cases[j].setBackground(Color.BLACK);
      
     }
     else
      cases[j].setBackground(Color.yellow);
    }
     j++;
    
   }
  }
 
 }
 public void mouseMoved(MouseEvent e)
 {
  dx=e.getX();
  dy=e.getY();
  
  for (int i=0; i<cases.length;i++)
  {
   if (e.getSource()==cases[i])
   {
    
    System.out.println("gogo :"+i);
   }
  }
  
 }
 public void mouseDragged(MouseEvent e)
 {

  for (int i=0; i<cases.length;i++)
  {
   
   if (e.getSource()==cases[i])
   {
    System.out.println("la case est"+i);
    iconRecord=cases[i].getIcon();
    //cases[i].setLocation(cases[i].getX()+e.getX()-pos.x-dx, cases[i].getY()+e.getY()-pos.y-dy);
    //cases[i].setIcon(null);
   }
  
  }
 }
 
 public void mousePressed(MouseEvent ee)
 {
  for (int i=0; i<cases.length; i++)
  {
   
  }
  //System.out.println("xxxx :"+ e.getX());
 }
 public void mouseClicked(MouseEvent ev)
 {
  //System.out.println("clique a "+ e.getX());
 }
 public void mouseReleased(MouseEvent e)
 {
  //pos.setLocation(e.getX(), e.getY());
  int posX=e.getX();
  int posY=e.getY();

  for (int i=0; i<cases.length; i++)
  {
   if (e.getSource()==cases[i])
   {
    System.out.println("the case is "+i);
    cases[i].setIcon(iconRecord);
   }
   
  }
  
 }
    public void mouseEntered(MouseEvent e)
    {
     for (int i=0; i<cases.length; i++)
  {
  
  }
    }
    public void mouseExited(MouseEvent e)
    {
     
    }
}