1    /* it contains exactly 9 painted (filled in) circles 
2       it contains circles of exactly 4 different sizes 
3       it contains circles of exactly 4 different colors 
4       none of the circles touch 
5       the image is symmetric about the Y-axis 
6       not all of the circles touch the Y-axis*/
7    
8    package npw;
9    import java.awt.Color;
10   import javax.swing.SwingUtilities;
11   import painter.SPainter;
12   import shapes.SCircle;
13   
14   public class Dots {
15       // THE SOLUTION TO THE DOTS PROBLEM
16       private void paintTheImage() {
17           SPainter klee = new SPainter ("Dots", 600, 600);
18           SCircle dot = new SCircle (10);
19           klee.mrt(200);
20   
21           klee.setColor(Color.BLUE);
22           klee.paint(dot);
23           klee.mlt(200);
24           klee.mlt(200);
25           klee.paint(dot);
26           klee.mrt(200);
27           paintRedDots(dot, klee);
28           paintYellowDots(dot, klee);
29           paintGreenDots(dot, klee);
30           paintBlackDot(dot, klee);
31       }
32   
33       private void paintBlackDot(SCircle dot, SPainter klee) {
34           klee.setColor(Color.black);
35           dot.x5();
36           klee.paint(dot);
37       }
38   
39       private void paintGreenDots(SCircle dot, SPainter klee) {
40           dot.s5(); // decrease the radius by 7
41           klee.setColor(Color.green); // set the color to green
42           klee.mlt(200); // move to the left by 200 units
43           klee.mbk(100); // move down by 200 units
44           klee.paint(dot); // paint the first dot
45           klee.mrt(400); // mirror effect
46           klee.paint(dot); // paint second dot
47           klee.moveToCenter();
48       }
49   
50       private void paintYellowDots(SCircle dot, SPainter klee) {
51           dot.x3(); // increase the radius by 3
52           klee.setColor(Color.yellow); // set the color to yellow
53           klee.mfd(200); // move up by 200 units
54           klee.mrt(200); // move to the right by 200 units
55           klee.paint(dot);
56           klee.mlt(400); // move all the way to the left (mirror)
57           klee.paint(dot); // paint second dot
58           klee.mbk(200); // move back down
59           klee.mrt(200); // back to starting point
60       }
61   
62       private void paintRedDots(SCircle dot, SPainter klee) {
63   
64           dot.x2(); // increase the radius by 2
65   
66           klee.setColor(Color.red); // set the color to red
67           klee.mfd(100); // move up by 100 units
68           klee.mrt(100); // move to the right by 100 units
69           klee.paint(dot);
70           klee.mlt(200); // move all the way to the left (mirror)
71           klee.paint(dot); // paint second dot
72           klee.mbk(100); // move back down
73           klee.mrt(100); // back to starting point
74       }
75   
76       // REQUIRED INFRASTRUCTURE
77       public Dots() {
78           paintTheImage();
79       }
80       public static void main(String[] args) {
81           SwingUtilities.invokeLater(new Runnable() {
82               public void run() {
83                   new Dots ();
84               }
85           });
86       }
87   
88   }
89