the bat doesnt hit the ball the ball rather goes through the bat. i want the bat to hit the ball.

import java.applet.Applet;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.geom.Ellipse2D;
import java.awt.Color;
import java.awt.BasicStroke;
import java.awt.geom.Line2D;
import java.awt.event.MouseMotionListener;
import java.awt.event.MouseListener;
import java.awt.event.MouseEvent;

public class BatBallApplet extends Applet
{


    public boolean inPlay = false;

    public BatBallApplet()

    {

    bat = new Rectangle(BAT_X, BAT_Y, BAT_WIDTH, BAT_HEIGHT);

    class MousePressListener implements MouseMotionListener
       {

              public void mousePressed(MouseEvent event){}
           public void mouseDragged(MouseEvent event){}
           public void mouseReleased(MouseEvent event){}

           public void mouseMoved(MouseEvent event)

           {

           int x = event.getX();
        int y = 285; // determines the position of movement

        bat.setLocation(x,y);

            repaint();

           }

           public void mouseClicked(MouseEvent event)

               {

               inPlay = true;

               }

           }


       MouseMotionListener listener = new MousePressListener();
        addMouseMotionListener(listener);
      }

    public void paint(Graphics g)

          {

          Graphics2D g2 = (Graphics2D)g;

              g2.draw(bat);
              g2.fill(bat);

                  Ellipse2D.Double ball = new Ellipse2D.Double(x,y,Ball_WIDTH,Ball_HEIGHT);

                  g2.draw(ball);
                  g2.setColor(Color.red);
                  g2.fill(ball);


                  if(x >= getWidth())
                  xd = -2;

                  if(y >= getHeight())
                  yd = -2;

                  if(x <= 0)
                  xd = +2;

                  if(y <= 0)
                  yd = +2;


                  if (inPlay = true)

                  {

                  x = x + xd;
                  y = y + yd;

                  }

                  else

                  {
                    inPlay = false;
                  }


              repaint();
                  try{
                                 Thread.sleep(5);
                          }
                          catch(Exception e){}


     }



private Ellipse2D ball;
private Rectangle bat;
public static final int BAT_X = 10;
public static final int BAT_Y = 285; //initialises the position of the bat

public static final int BAT_WIDTH = 30; // intialising bat size
public static final int BAT_HEIGHT = 10;// ""

public static final double Ball_WIDTH = 10;
public static final double Ball_HEIGHT = 10;
private int x;
private int y;
private int xd =1;
private int yd =1;

}