1    /* 
2     * Program to paint  a user-specified number of concentric squares in a 700x700 square with random colors. 
3     */
4    package npw;
5    import java.awt.*;
6    import java.util.Random;
7    import java.util.Scanner;
8    import javax.swing.*;
9    import painter.SPainter;
10   import shapes.SSquare;
11   
12   public class Stella {
13   
14       private void paintTheImage() {
15           String nss = JOptionPane.showInputDialog(null, "number of concentric squares");
16           Scanner scanner = new Scanner(nss);
17           int conSquares = scanner.nextInt();
18           SPainter painter = new SPainter("Stella", 800, 800);
19           double squareSide = 700;
20           SSquare square = new SSquare(squareSide);
21           Random rgen = new Random();
22           int r1 = rgen.nextInt(256);
23           int g1 = rgen.nextInt(256);
24           int b1 = rgen.nextInt(256);
25           int r2 = rgen.nextInt(256);
26           int g2 = rgen.nextInt(256);
27           int b2 = rgen.nextInt(256);
28           painter.setColor(Color.getHSBColor(r1,g1,b1));
29           painter.paint(square);
30           int i = 0;
31           while (i < conSquares) {
32               if (i % 2 == 0) {
33                   painter.setColor(Color.getHSBColor(r2,g2,b2));
34               } else if (i % 2 == 1) {
35                   painter.setColor(Color.getHSBColor(r1,g1,b1));
36               }
37               squareSide = squareSide - (square.side() / conSquares);
38               SSquare newSquare = new SSquare(squareSide);
39               painter.paint(newSquare);
40               i = i + 1;
41           }
42       }
43   
44       public Stella() {
45           paintTheImage();
46       }
47   
48       public static void main(String[] args) {
49           SwingUtilities.invokeLater(new Runnable() {
50               public void run() {
51                   new Stella();
52               }
53           });
54       }
55   }
56   
57