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     * - HELP: show a list of the commands in a dialog message box 
8     * - EXIT: terminate the program 
9     */
10   
11   package interpreters;
12   
13   import java.awt.Color;
14   import java.sql.SQLOutput;
15   import java.util.Locale;
16   import javax.swing.JOptionPane;
17   import javax.swing.SwingUtilities;
18   import painter.SPainter;
19   import shapes.SCircle;
20   
21   public class Interpreter1 {
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) { 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("help")) {
41                   JOptionPane.showMessageDialog(null, "Valid commands are: "
42                       + "RED | BLUE | HELP | EXIT ");
43               } else if (command.equalsIgnoreCase("exit")) {
44                   miro.end();
45                   System.out.println("Thank you for viewing the dots ...");
46                   break;
47               } else {
48                   JOptionPane.showMessageDialog(null, "Unrecognizable command: "
49                           + command.toUpperCase());
50               }
51           }
52       }
53   
54       //INFRASTRUCTURE FOR SOME SIMPLE PAINTING
55   
56       public Interpreter1() {
57           interpreter();
58       }
59   
60       public static void main(String[] args) {
61           SwingUtilities.invokeLater(new Runnable() {
62               public void run() {
63                   new Interpreter1();
64               }
65           });
66       }
67   }
68