1    /* 
2     * Program that has the user input a number and that many squares will be 
3     * painted on top of each other getting increasingly smaller and the color 
4     * of the squares alternate between two random colors. 
5     */
6    
7    package npw;
8    
9    import java.awt.Color;
10   import java.util.Random;
11   import java.util.Scanner;
12   import javax.swing.JOptionPane;
13   import javax.swing.SwingUtilities;
14   import painter.SPainter;
15   import shapes.SSquare;
16   
17   public class Stella {
18   
19       public static void main(String[] args) {
20           SPainter painter = new SPainter("Stella", 800, 800);
21           SSquare square = new SSquare(700);
22           int nrOfSquares = getNumber("number of squares");
23           Color randomcolor1 = randomColor();
24           Color randomcolor2 = randomColor();
25           double change = (700.0 / nrOfSquares);
26           int x = 0;
27           while (x < nrOfSquares) {
28               if (x % 2 == 1) {
29                   painter.setColor(randomcolor1);
30               } else {
31                   painter.setColor(randomcolor2);
32               }
33               x = x + 1;
34               painter.paint(square);
35               square.shrink(change);
36           }
37       }
38   
39       private static int getNumber(String prompt) {
40           String nss = JOptionPane.showInputDialog(null,prompt+"?");
41           Scanner scanner = new Scanner(nss);
42           return scanner.nextInt();
43       }
44   
45       private static Color randomColor() {
46           Random rgen = new Random();
47           int r = rgen.nextInt(256);
48           int g = rgen.nextInt(256);
49           int b = rgen.nextInt(256);
50           return new Color(r,b,g);
51       }
52   }
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