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 dots 
6     * -RED: paint a red dot 
7     * -GREEN: paint a green dot 
8     * -YELLOW: paint a yellow dot 
9     * -HELP: show a list of 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 INPUT DIALOG BOX AND INTERPRET IT
31           while (true) {
32               String command = JOptionPane.showInputDialog(null, "Command?");
33               if (command == null) {
34                   command = "exit";
35               }//user clicked on Cancel
36               if (command.equalsIgnoreCase("blue")) {
37                   miro.setColor(Color.BLUE);
38                   miro.paint(dot);
39               } else if (command.equalsIgnoreCase("red")) {
40                   miro.setColor(Color.RED);
41                   miro.paint(dot);
42               } else if (command.equalsIgnoreCase("green")) {
43                   miro.setColor(Color.GREEN);
44                   miro.paint(dot);
45               } else if (command.equalsIgnoreCase("yellow")) {
46                   miro.setColor(Color.YELLOW);
47                   miro.paint(dot);
48               } else if (command.equalsIgnoreCase("help")) {
49                   JOptionPane.showMessageDialog(null, "Valid commands are: " + "RED | BLUE | GREEN | YELLOW | HELP | EXIT ");
50               } else if (command.equalsIgnoreCase("exit")) {
51                   miro.end();
52                   System.out.println("Thank you for viewing the dots ... ");
53                   break;
54               } else {
55                   JOptionPane.showMessageDialog(null, "Unrecognizable command: " + command.toUpperCase());
56               }
57           }
58       }
59   
60       //INFRASTRUCTURE FOR SOME SIMPLE PAINTING
61   
62       public Interpreter2() {
63           interpreter();
64       }
65   
66       public static void main(String[] args){
67           SwingUtilities.invokeLater(new Runnable(){
68               public void run(){
69                   new Interpreter2();
70               }
71   
72           });
73       }
74   }
75