1    /* 
2    *Ballons Program that paints 300 balloons in a blue sky 
3    */
4    package npw;
5    
6    import java.awt.Color;
7    import java.util.Random;
8    import javax.swing.SwingUtilities;
9    import painter.SPainter;
10   import shapes.SCircle;
11   import shapes.SSquare;
12   
13   public class Balloons {
14   
15       //Required Infrastructure
16   
17       public Balloons() {
18           paintTheImage();
19       }
20   
21       public static void main(String[] args) {
22           SwingUtilities.invokeLater(new Runnable() {
23               public void run() {
24                   new Balloons();
25               }
26           });
27       }
28   
29       //Painter Doing what it does
30   
31       private void paintTheImage() {
32           SPainter painter = new SPainter("Balloons", 600, 600);
33           paintSky(painter);
34           int nrOfBalloons = 100;
35           paintBalloons(painter,nrOfBalloons);
36       }
37   
38       private void paintSky(SPainter painter) {
39           painter.setColor(Color.BLUE);
40           SSquare sky = new SSquare(2000);
41           painter.paint(sky);
42       }
43   
44       private void paintBalloons(SPainter painter, int nrOfBalloons) {
45           int i = 1;
46           while ( i <= nrOfBalloons ) {
47               paintOneBalloon(painter);
48               i = i + 1;
49           }
50       }
51   
52       private void paintOneBalloon(SPainter painter) {
53           Random rgen = new Random();
54           int rn = rgen.nextInt(3);
55           if ( rn == 0 ) {
56               painter.setColor(Color.RED);
57           } else if ( rn == 1 ) {
58               painter.setColor(Color.ORANGE);
59           } else {
60               painter.setColor(Color.YELLOW);
61           }
62           painter.move();
63           int balloonRadius = 20;
64           SCircle balloon = new SCircle(balloonRadius);
65           painter.paint(balloon);
66           painter.setColor(Color.BLACK);
67           painter.draw(balloon);
68       }
69   
70   }
71