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 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   
23           // CREATE OBJECTS TO THINK WITH
24       SPainter miro = new SPainter("Dot Thing", 400, 400);
25       miro.setScreenLocation(0,0);
26       SCircle dot = new SCircle(180);
27   
28       // REPEATEDLY TAKE A COMMAND FROM AN IMPUT DIALOG BOX AND INTERPRET IT
29       while (true) {
30           String command = JOptionPane.showInputDialog(null,"Command?");
31           if ( command == null) {command = "exit"; } // user clicked on cancel
32           if (command.equalsIgnoreCase("blue")) {
33               miro.setColor(Color.BLUE);
34               miro.paint(dot);
35           }else if ( command.equalsIgnoreCase("red")) {
36               miro.setColor(Color.RED);
37               miro.paint(dot);
38           }else if (command.equalsIgnoreCase("help")) {
39               JOptionPane.showMessageDialog(null, "Valid commands are: " + "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 : " + command.toUpperCase());
46           }
47       }
48       }
49   
50       //INFRASTRUCTURE FOR SOME SIMPLE PAINTING
51   
52       public Interpreter1() {
53           interpreter();
54       }
55   
56       public static void main(String[] args) {
57           SwingUtilities.invokeLater(new Runnable() {
58               public void run() {
59                   new Interpreter1();
60               }
61           });
62       }
63   }
64