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    - GREEN: paint a green dot 
8    - Yellow: paint a Yellow dot 
9    - Help: show a list of the commands in a dialogue message box 
10   - EXIT: terminate the program 
11    */
12   package interpreters;
13   
14   import painter.SPainter;
15   import shapes.SCircle;
16   
17   import javax.swing.*;
18   import java.awt.*;
19   
20   public class Interpreter2 {
21       private void interpreter() {
22           //CREATE OBJECTS WITH
23           SPainter miro = new SPainter("Dot Thing", 400,400);
24           miro.setScreenLocation(0,0);
25           SCircle dot = new SCircle(180);
26   
27           //REPEATEDLY TAKE A COMMAND FROM AN INPUT DIALOG BOX AND INTERPRET IT
28           while (true) {
29               String command = JOptionPane.showInputDialog(null, "Command?");
30               if (command == null) {
31                   command = "exit";
32               } // user clicked on cancel
33               if (command.equalsIgnoreCase("blue")) {
34                   miro.setColor(Color.BLUE);
35                   miro.paint(dot);
36               } else if (command.equalsIgnoreCase("red")) {
37                   miro.setColor(Color.RED);
38                   miro.paint(dot);
39               } else if (command.equalsIgnoreCase("GREEN")) {
40                   miro.setColor(Color.GREEN);
41                   miro.paint(dot);
42               } else if (command.equalsIgnoreCase("YELLOW")) {
43                   miro.setColor(Color.YELLOW);
44                   miro.paint(dot);
45               }else if (command.equalsIgnoreCase("help")){
46                   JOptionPane.showMessageDialog(null,"Valid commands are: "
47                           + "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: "
54                           + command.toUpperCase());
55               }
56   
57           }
58       }
59       //INFRASTRUCTURE FOR SOME SIMPLE PAINTING
60       public Interpreter2() {
61           interpreter();
62       }
63       public static void main(String[] args) {
64           SwingUtilities.invokeLater(new Runnable() {
65               public void run() {
66                   new Interpreter3();
67               }
68           });
69       }
70   }
71