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 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) {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("green")) {
41                   miro.setColor(Color.GREEN);
42                   miro.paint(dot);
43               } else if (command.equalsIgnoreCase("yellow")) {
44                   miro.setColor(Color.YELLOW);
45                   miro.paint(dot);
46               } else if (command.equalsIgnoreCase("help")) {
47                   JOptionPane.showMessageDialog(null, "Valid commands are: "
48                           + "RED | BLUE | GREEN | YELLOW | HELP | EXIT");
49               } else if (command .equalsIgnoreCase("exit")) {
50                   miro.end();
51                   System.out.println("Thank you for viewing the dots ...");
52                   break;
53               } else {
54                   JOptionPane.showMessageDialog(null, "Unrecognizable command: "
55                           + command.toUpperCase());
56               }
57           }
58   
59       }
60   
61       //infrastructure for simple painting
62   
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   }