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    * - 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 javax.swing.JOptionPane;
15   import javax.swing.SwingUtilities;
16   import painter.SPainter;
17   import shapes.SCircle;
18   
19   public class Interpreter1 {
20   
21       private void interpreter() {
22           // CREATE OBJECTS TO THINK WITH
23           SPainter miro = new SPainter("Dot Thing", 400, 400);
24           miro.setScreenLocation(0, 0);
25           SCircle dot = new SCircle(180);
26   
27           // REPEATEDLY TAKE A COMMAND FROM AN INPUT DIALOG BOX AND INTERPRET IT
28           while (true) {
29               String command = JOptionPane.showInputDialog(null, "Command?");
30               if (command == null) {
31                   command = "exit";
32               } // user clicked on Cancel
33               if (command.equalsIgnoreCase("blue")) {
34                   miro.setColor(Color.BLUE);
35                   miro.paint(dot);
36               } else if (command.equalsIgnoreCase("red")) {
37                   miro.setColor(Color.RED);
38                   miro.paint(dot);
39               } else if (command.equalsIgnoreCase("help")) {
40                   JOptionPane.showMessageDialog(null, "Valid commands are: "
41                           + "RED | BLUE | HELP | EXIT ");
42               } else if (command.equalsIgnoreCase("exit")) {
43                   miro.end();
44                   System.out.println("Thank you for viewing the dots...");
45                   break;
46               } else {
47                   JOptionPane.showMessageDialog(null, "Unrecognizable command: "
48                           + command.toUpperCase());
49               }
50           }
51       }
52       // INFRASTRUCTURE FOR SOME SIMPLE PAINTING
53   
54       public Interpreter1() {
55           interpreter();
56       }
57   
58       public static void main(String[] args) {
59           SwingUtilities.invokeLater(new Runnable() {
60               public void run() {
61                   new Interpreter1();
62               }
63           });
64       }
65   }
66   
67   
68