1    /* 
2     * Program that paints 100 red, yellow and orange balloons in a blue sky. 
3     * It will feature commands. 
4     */
5    package npw;
6    
7    import java.awt.Color;
8    import java.util.Random;
9    import javax.swing.SwingUtilities;
10   import painter.SPainter;
11   import shapes.SCircle;
12   import shapes.SSquare;
13   
14   public class Balloons {
15       //Required infrastructure
16       public Balloons() {
17           paintTheImage();
18       }
19       public static void main(String[]args) {
20           SwingUtilities.invokeLater(new Runnable() {
21               public void run() {
22                   new Balloons();
23               }
24           });
25       }
26       //The painter doing its thing
27       private void paintTheImage(){
28           SPainter painter = new SPainter("Balloons",600,600);
29           paintSky(painter);
30           int nrOfBalloons = 100;
31           paintBalloons(painter,nrOfBalloons);
32       }
33       private void paintSky(SPainter painter) {
34           painter.setColor(Color.BLUE);
35           SSquare sky = new SSquare(2000);
36           painter.paint(sky);
37       }
38   
39       private void paintBalloons(SPainter painter, int nrOfBalloons) {
40           int i = 1;
41           while (i <= nrOfBalloons){
42               paintOneBalloon(painter);
43               i = i + 1;
44           }
45       }
46   
47       private void paintOneBalloon(SPainter painter) {
48           Random rgen = new Random();
49           int rn = rgen.nextInt(3);
50           if (rn == 0) {
51               painter.setColor(Color.RED);
52           } else if (rn == 1) {
53               painter.setColor(Color.ORANGE);
54           } else {
55               painter.setColor(Color.YELLOW);
56           }
57           painter.move();
58           int balloonRadius = 20;
59           SCircle balloon = new SCircle(balloonRadius);
60           painter.paint(balloon);
61           painter.setColor(Color.BLACK);
62           painter.draw(balloon);
63       }
64   }
65