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