1    package interpreters;
2    
3    import java.awt.Color;
4    import javax.swing.JOptionPane;
5    import javax.swing.SwingUtilities;
6    
7    import painter.SPainter;
8    import shapes.SCircle;
9    
10   public class Interpreter2 {
11       private void interpreter() {
12           // Create objects to think with.
13           SPainter miro = new SPainter("Dot Thing", 400, 400);
14           miro.setScreenLocation(0, 0);
15           SCircle dot = new SCircle(180);
16           // Repeatedly take a command from an input dialog box and interpret it
17           while (true) {
18               String command = JOptionPane.showInputDialog(null, "Command?");
19               if (command == null) {
20                   command = "exit";
21               } // user click on cancel
22               if (command.equalsIgnoreCase("blue")) {
23                   miro.setColor(Color.BLUE);
24                   miro.paint(dot);
25               } else if (command.equalsIgnoreCase("red")) {
26                   miro.setColor(Color.RED);
27                   miro.paint(dot);
28               } else if (command.equalsIgnoreCase("help")) {
29                   JOptionPane.showMessageDialog(null, "Valid commands are: " + "RED | BLUE | GREEN | YELLOW | HELP | EXIT ");
30               } else if (command.equalsIgnoreCase("exit")) {
31                   miro.end();
32                   System.out.println("Thank you for viewing the dots ...");
33                   break;
34               } else if (command.equalsIgnoreCase("green")) {
35                   miro.setColor(Color.GREEN);
36                   miro.paint(dot);
37               } else if (command.equalsIgnoreCase("yellow")) {
38                   miro.setColor(Color.YELLOW);
39                   miro.paint(dot);
40               } else {
41                   JOptionPane.showMessageDialog(null, "Unrecognizable command: " + command.toUpperCase());
42               }
43           }
44       }
45   
46   
47   // Infrastructure for some simple painting
48   
49       public Interpreter2() {
50           interpreter();
51       }
52   
53       public static void main(String[] args) {
54           SwingUtilities.invokeLater(new Runnable() {
55               public void run() {
56                   new Interpreter2();
57               }
58           });
59       }
60   }
61