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 are: 
5     * -BLUE: paint a blue dot 
6     * -RED: paint a red dot 
7     * -GREEN: paint a green dot 
8     * -YELLOW: paint a yellow dot 
9     * -HELP: show a list of the commands in a dialog message box 
10    * -EXIT: terminate the program 
11    */
12   
13   package interpreters;
14   
15   import java.awt.Color;
16   import javax.swing.JOptionPane;
17   import javax.swing.SwingUtilities;
18   import painter.SPainter;
19   import shapes.SCircle;
20   
21   public class Interpreter2 {
22   
23       private void interpreter() {
24   
25           // CREATE OBJECTS TO THINK WITH
26           SPainter miro = new SPainter("Dot Thing", 400, 400);
27           miro.setScreenLocation(0,0);
28           SCircle dot = new SCircle(180);
29   
30           // REPEATEDLY TAKE A COMMAND FROM AN IMPUT DIALOG BOX AND INTERPRET IT
31           while (true) {
32               String command = JOptionPane.showInputDialog(null,"Command?");
33               if ( command == null) {command = "exit"; } // 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("green")) {
41                   miro.setColor(Color.GREEN);
42                   miro.paint(dot);
43               }else if (command.equalsIgnoreCase("yellow")) {
44                   miro.setColor(Color.YELLOW);
45                   miro.paint(dot);
46               }else if (command.equalsIgnoreCase("help")) {
47                   JOptionPane.showMessageDialog(null, "Valid commands are: " + "RED | BLUE | GREEN | YELLOW | HELP | EXIT ");
48               }else if (command.equalsIgnoreCase("exit")) {
49                   miro.end();
50                   System.out.println("Thank you for viewing the dots ...");
51                   break;
52               }else {
53                   JOptionPane.showMessageDialog(null, "Unrecognizable command : " + command.toUpperCase());
54               }
55           }
56       }
57   
58       //INFRASTRUCTURE FOR SOME SIMPLE PAINTING
59   
60       public Interpreter2() {
61           interpreter();
62       }
63   
64       public static void main(String[] args) {
65           SwingUtilities.invokeLater(new Runnable() {
66               public void run() {
67                   new Interpreter2();
68               }
69           });
70       }
71   }
72