1    /* 
2     * This interpreter is intended to paint different colored dots in a window 
3     * 
4     * The commands that the interpreter can recognize and respond to are: 
5     * - BLUE: paint a blue dot 
6     * - RED: paint a red dot 
7     * - HELP: show a list of the commands in a dialog message box 
8     * - EXIT: terminate the program 
9     */
10   
11   package interpreters;
12   
13   import painter.SPainter;
14   import shapes.SCircle;
15   
16   import javax.swing.*;
17   import java.awt.*;
18   
19   public class Interpreter1 {
20   
21       private void interpreter() {
22   
23           //CREATE OBJECTS TO THINK WITH
24           SPainter miro = new SPainter("Dot Thing", 400, 400);
25           miro.setScreenLocation(0, 0);
26           SCircle dot = new SCircle(180);
27   
28           //REPEATEDLY TAKE A COMMAND FROM AN INPUT DIALOG BOX AND INTERPRET IT
29           while (true) {
30               String command = JOptionPane.showInputDialog(null, "Command?");
31               if (command == null) {
32                   command = "exit";
33               } // user clicked on Cancel
34               if (command.equalsIgnoreCase("blue")) {
35                   miro.setColor(Color.BLUE);
36                   miro.paint(dot);
37               } else if (command.equalsIgnoreCase("red")) {
38                   miro.setColor(Color.RED);
39                   miro.paint(dot);
40               } else if (command.equalsIgnoreCase("help")) {
41                   JOptionPane.showMessageDialog(null, "Valid commands are:"
42                           + "RED | BLUE| HELP | EXIT ");
43               } else if (command.equalsIgnoreCase("exit")) {
44                   miro.end();
45                   System.out.println("Thank you for viewing the dots ...");
46                   break;
47               } else {
48                   JOptionPane.showMessageDialog(null, "Unrecognizable command: "
49                           + command.toUpperCase());
50               }
51           }
52       }
53   
54       //INFASTRUCTURE FOR SOME SIMPLE PAINTING
55   
56       public Interpreter1() {
57           interpreter();
58       }
59   
60       public static void main(String[] args) {
61           SwingUtilities.invokeLater(new Runnable() {
62               public void run() {
63                   new Interpreter1();
64                                          }
65                                      });
66               }
67   
68   }
69