1    package interpreters;
2    import java.awt.Color;
3    import javax.swing.JOptionPane;
4    import javax.swing.SwingUtilities;
5    import painter.SPainter;
6    import shapes.SCircle;
7    
8    
9    public class Interpreter3 {
10   
11       private void interpreter() {
12   
13           //CREATE OBJECTS TO THINK WITH
14           SPainter miro = new SPainter("Dot Thing", 400, 400);
15           miro.setScreenLocation(0, 0);
16           SCircle dot = new SCircle(180);
17   
18           //REPEATEDLY TAKE A COMMAND FROM AN INPUT DIALOG BOX AND INTERPRET IT
19           while (true) {
20               String command = JOptionPane.showInputDialog(null, "Command?");
21               if (command == null) {
22                   command = "exit";
23               } // user clicked on Cancel
24               if (command.equalsIgnoreCase("blue")) {
25                   miro.setColor(Color.BLUE);
26                   miro.paint(dot);
27               } else if (command.equalsIgnoreCase("red")) {
28                   miro.setColor(Color.RED);
29                   miro.paint(dot);
30               } else if (command.equalsIgnoreCase("green")) {
31                   miro.setColor(Color.GREEN);
32                   miro.paint(dot);
33               } else if (command.equalsIgnoreCase("yellow")) {
34                   miro.setColor(Color.YELLOW);
35                   miro.paint(dot);
36               } else if ( command.equalsIgnoreCase("random") ) {
37                   miro.setColor(randomColor());
38                   miro.paint(dot);
39               } else if (command.equalsIgnoreCase("help")) {
40                   JOptionPane.showMessageDialog(null, "Valid commands are: "
41                           + "RED | BLUE | GREEN | YELLOW |HELP | EXIT | RANDOM |  ");
42               } else if (command.equalsIgnoreCase("exit")) {
43                   miro.end();
44                   System.out.println("Thank you for viewing the dots ...");
45                   break;
46               } else {
47                   JOptionPane.showMessageDialog(null, "Unrecognizable command: "
48                           + command.toUpperCase());
49               }
50   
51   
52           }
53   
54   
55       }
56   
57       public static Color randomColor() {
58           int rv = (int)(Math.random()*256);
59           int gv = (int)(Math.random()*256);int bv = (int)(Math.random()*256);
60           return new Color(rv,gv,bv);
61       }
62   
63   
64       //INFRASTRUCTURE FOR SOME SIMPLE PAINTING
65   
66       public Interpreter3() {
67           interpreter();
68       }
69   
70       public static void main(String[] args) {
71           SwingUtilities.invokeLater(new Runnable() {
72               public void run() {
73                   new Interpreter3();
74               }
75           });
76       }
77   }
78