1 /* 2 * Program that paints 100 red, yellow, and orange balloons in a blue sky. 3 * It will feat. commands. 4 */ 5 6 package npw; 7 8 import java.awt.Color; 9 import java.util.Random; 10 import javax.swing.SwingUtilities; 11 import painter.SPainter; 12 import shapes.SCircle; 13 import shapes.SSquare; 14 15 public class Balloons { 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 private void paintTheImage() { 30 SPainter painter = new SPainter("Balloons", 600, 600); 31 paintSky(painter); 32 int nrOfBalloons = 100; 33 paintBalloons(painter,nrOfBalloons); 34 } 35 36 private void paintSky(SPainter painter) { 37 painter.setColor(Color.BLUE); 38 SSquare sky = new SSquare(2000); 39 painter.paint(sky); 40 } 41 42 private void paintBalloons(SPainter painter, int nrOfBalloons) { 43 int i = 1; 44 while (i <= nrOfBalloons) { 45 paintOneBalloon(painter); 46 i = i + 1; 47 } 48 } 49 50 private void paintOneBalloon(SPainter painter) { 51 Random rgen = new Random(); 52 int rn = rgen.nextInt(3); 53 if (rn == 0) { 54 painter.setColor(Color.RED); 55 } else if (rn == 1) { 56 painter.setColor(Color.ORANGE); 57 } else { 58 painter.setColor(Color.YELLOW); 59 } 60 painter.move(); 61 int balloonRadius = 20; 62 SCircle balloon = new SCircle(balloonRadius); 63 painter.paint(balloon); 64 painter.setColor(Color.BLACK); 65 painter.draw(balloon); 66 } 67 68 69 } 70