1 /* 2 * Program that paints 300 red, yellow and orange balloons in a blue sky. 3 * It will feature 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 AlternateBalloons { 16 //REQUIRED INFRASTRUCTURE 17 public AlternateBalloons() { 18 paintTheImage(); 19 } 20 21 public static void main (String[] args) { 22 SwingUtilities.invokeLater(new Runnable() { 23 public void run() { 24 new AlternateBalloons(); 25 } 26 }); 27 } 28 29 // THE PAINTER DOING ITS THING 30 31 private void paintTheImage() { 32 SPainter painter = new SPainter("Alternate Balloons", 600, 600); 33 paintSky(painter); // ask intelliJ to generate the stub 34 int nrOfBalloons = 300; 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(6); 55 if (rn == 0) { 56 painter.setColor(Color.RED); 57 } else if (rn == 1) { 58 painter.setColor(Color.ORANGE); 59 } else if (rn == 2) { 60 painter.setColor(Color.GREEN); 61 } else if (rn == 3) { 62 painter.setColor(Color.CYAN); 63 } else if (rn == 4) { 64 painter.setColor(Color.WHITE); 65 } else if (rn == 5) { 66 painter.setColor(Color.GRAY); 67 } else { 68 painter.setColor(Color.YELLOW); 69 } 70 painter.move(); 71 int balloonRadius = 30; 72 SCircle balloon = new SCircle(balloonRadius); 73 painter.paint(balloon); 74 painter.setColor(Color.BLACK); 75 painter.draw(balloon); 76 } 77 } 78 79