import java.util.*;
import java.util.List;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.Timer;
public class HW90 extends JApplet {
Graphics2D g;
Rectangle top, left, bottom, right;
int screenW, screenH;
List ballList = new ArrayList();
static final Color[] cols = { Color.blue, Color.red, Color.green, Color.yellow,
Color.cyan, Color.magenta };
Timer tim = new Timer(25, new ActionListener() {
public void actionPerformed(ActionEvent e) {
for (int i = 0; i < ballList.size(); i++) {
((Ball) ballList.get(i)).action();
}
}
});
public void init() {
final JLabel screen = new JLabel();
screen.setOpaque(true);
screen.setBackground(Color.white);