1    package assign_4;
2    
3    import painter.SPainter;
4    import shapes.SSquare;
5    
6    import javax.swing.*;
7    import java.awt.*;
8    import java.util.Random;
9    import java.util.Scanner;
10   
11   public class Stella {
12   
13       public static void main(String[] args) {
14           SwingUtilities.invokeLater(new Runnable() {
15               @Override
16               public void run() {
17                   new assign_4.Stella();
18               }
19           });
20       }
21   
22       private Stella() {
23           paintTheImage();
24       }
25   
26       private void paintTheImage() {
27           int numOfSquares = getNumber();
28           SPainter painter = new SPainter("Stella", 800, 800);
29           SSquare square = new SSquare(700);
30           squares(square, painter, numOfSquares);
31       }
32       private void squares(SSquare square, SPainter painter, int numOfSquares) {
33           Random random = new Random();
34           final float hue = random.nextFloat();
35           final float saturation = (random.nextInt(2000) + 1000) / 10000f;
36           final float luminance = 0.9f;
37           final Color color2 = Color.getHSBColor(hue, saturation, luminance);
38           final float hue1 = random.nextFloat();
39           final float saturation1 = (random.nextInt(2000) + 1000) / 10000f;
40           final float luminance1 = 0.9f;
41           final Color color1 = Color.getHSBColor(hue1, saturation1, luminance1);
42           double num = square.side()/numOfSquares;
43           int j = numOfSquares;
44           int i = 0;
45           while (j >= 0) {
46               if (i == 0) {
47                   painter.setColor(color1);
48                   painter.paint(square);
49                   square.shrink(num);
50               } else {
51                   painter.setColor(color2);
52                   painter.paint(square);
53                   square.shrink(num);
54               }
55               j = j - 1;
56               i = i + 1;
57               if (i >= 2) {
58                   i = 0;
59               }
60           }
61   
62       }
63   
64       private int getNumber() {
65           String nss = JOptionPane.showInputDialog(null, "number of concentric squares" + "?");
66           Scanner scanner = new Scanner(nss);
67           return scanner.nextInt();
68       }
69   
70   }
71   
72