1    /* 
2     * This interpreter is intended to pass 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 dialog message box 
10    * - EXIT: terminate the program 
11    */
12   
13   package interpreters;
14   
15   import java.awt.Color;
16   import java.sql.SQLOutput;
17   import java.util.Locale;
18   import javax.swing.JOptionPane;
19   import javax.swing.SwingUtilities;
20   import painter.SPainter;
21   import shapes.SCircle;
22   
23   public class Interpreter2 {
24   
25       private void interpreter() {
26   
27           //CREATE OBJECTS TO THINK WITH
28           SPainter miro = new SPainter("Dot Thing", 400, 400);
29           miro.setScreenLocation(0,0);
30           SCircle dot = new SCircle(180);
31   
32           //REPEATEDLY TAKE A COMMAND FROM AN INPUT DIALOG BOX AND INTERPRET IT
33           while (true) {
34               String command  = JOptionPane.showInputDialog(null, "Command?");
35               if (command == null) { command = "exit"; } //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: "
50                           + "RED | BLUE | GREEN | YELLOW | HELP | EXIT ");
51               } else if (command.equalsIgnoreCase("exit")) {
52                   miro.end();
53                   System.out.println("Thank you for viewing the dots ...");
54                   break;
55               } else {
56                   JOptionPane.showMessageDialog(null, "Unrecognizable command: "
57                           + command.toUpperCase());
58               }
59           }
60       }
61   
62       //INFRASTRUCTURE FOR SOME SIMPLE PAINTING
63   
64       public Interpreter2() {
65           interpreter();
66       }
67   
68       public static void main(String[] args) {
69           SwingUtilities.invokeLater(new Runnable() {
70               public void run() {
71                   new Interpreter2();
72               }
73           });
74       }
75   }
76