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