This is my code in a applet :
import java.awt.*;
import java.applet.*;
import java.util.*;
import javax.swing.*;
public class BallMove extends Applet
{ Random r = new Random();
private int x,x1,x2,x3 ;
private int y,y1,y2,y3 ;
private Image offImage;
private Graphics offGraphics;
private Image img;
private ImageIcon img2;
public void init()
{
offImage = createImage(500,500);
offGraphics = offImage.getGraphics();
img = getImage(getDocumentBase(),"img11.jpg");
img2 = new ImageIcon("img11.jpg");
}
public void paint(Graphics g)
{ super.paint(g);
img2.paintIcon(this,g,180,0);
Color color =new Color(r.nextInt(256),r.nextInt(256),r.nextInt(256));
y= r.nextInt(700);
x=r.nextInt(1000);
y1= r.nextInt(700);
x1=r.nextInt(1000);
y2= r.nextInt(700);
x2=r.nextInt(1000);
x3=r.nextInt(1000);
y3=r.nextInt(700);
g.setColor(color);
g.fillOval(x,y,100,100);
g.fillOval(x1,y1,100,100);
g.fillOval(x2,y2,100,100);
g.fillOval(x3,y3,100,100);
delay(300);
move();
g.drawImage(offImage,0,0,this);
offGraphics.fillOval(x,y,100,100);
offGraphics.fillOval(x1,y1,100,100);
offGraphics.fillOval(x2,y2,100,100);
}
public void delay(int milisecond)
{
try{
Thread.sleep(milisecond);
}catch (Exception e) {}
}
public void move()
{
x= x + 5;
y= y +5;
x1=x1+10;
y1=y1+5;
x2=x2-10;
y2=y2-5;
repaint();
}
public void update(Graphics g)
{
paint(g);
}
}
Background is error when the ball moves. How to fix it ?
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