1    /* 
2     * This interpreter is intended to paint different colored dots in a window. 
3     * 
4     * The command 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 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   
22   public class Interpreter2 {
23   
24       private void interpreter() {
25   
26           // CREATE OBJECTS TO THINK WITH
27           SPainter miro = new SPainter("Dot Thing",400,400);
28           miro.setScreenLocation(0,0);
29           SCircle dot = new SCircle(180);
30   
31           // REPEATEDLY TAKE A COMMAND FROM AN INPUT DIALOG BOX AND INTERPRET IT
32           while (true) {
33               String command = JOptionPane.showInputDialog(null,"Command?");
34               if (command == null) { command = "exit"; } // user clicked on cancel
35               if ( command.equalsIgnoreCase("blue")) {
36                   miro.setColor(Color.BLUE);
37                   miro.paint(dot);
38               } else if ( command.equalsIgnoreCase("red")) {
39                   miro.setColor(Color.RED);
40                   miro.paint(dot);
41               }    else if ( command.equalsIgnoreCase("green")) {
42                   miro.setColor(Color.GREEN);
43                   miro.paint(dot);
44               }    else if ( command.equalsIgnoreCase("yellow")) {
45                   miro.setColor(Color.YELLOW);
46                   miro.paint(dot);
47               } else if ( command.equalsIgnoreCase("help")) {
48                   JOptionPane.showMessageDialog(null, "Valid commands are:"
49                           + "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: ");
56   
57               }
58   
59           }
60       }
61   
62       // INFRASTRUCTRE FOR SOME SIMPLE PAINTING
63       public Interpreter2() {
64           interpreter();
65       }
66   
67       public static void main(String[] args) {
68           SwingUtilities.invokeLater(new Runnable() {
69               public void run() {
70                   new Interpreter2();
71               }
72   
73           });
74       }
75   
76   
77   }
78   
79   
80