1    /* 
2     *This interpreter is inteded 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 painter.SPainter;
14   import shapes.SCircle;
15   
16   import javax.swing.*;
17   import java.awt.*;
18   
19   public class Interpreter1 {
20       private void interpreter() {
21           //CREATE OBJECTS TO THINK WITH
22           SPainter miro = new SPainter("Dot Thing", 400, 400);
23           miro.setScreenLocation(0,0);
24           SCircle dot = new SCircle(180);
25   
26           //REPEATEDLY TAKE A COMMAND FROM AN INPUT DIALOG BOX AND INTERPRET IT
27           while (true) {
28               String command = JOptionPane.showInputDialog(null,"command?");
29               if (command == null) {command="exit";} //user clicked on Cancel
30               if (command.equalsIgnoreCase("blue")) {
31                   miro.setColor(Color.BLUE);
32                   miro.paint(dot);
33               } else if (command.equalsIgnoreCase("red")) {
34                   miro.setColor(Color.RED);
35                   miro.paint(dot);
36   
37               } else if (command.equalsIgnoreCase("help")) {
38                   JOptionPane.showMessageDialog(null, "Valid commands are: " + "RED | BLUE | HELP | EXIT ");
39               } else if (command.equalsIgnoreCase("exit")) {
40                   miro.end();
41                   System.out.println("Thank you for viewing the dots ...");
42                   break;
43               } else {
44                   JOptionPane.showMessageDialog(null, "Unrecognizable command" + command.toUpperCase());
45               }
46           }
47       }
48   
49       // INFRASTRUCTURE FOR SOME SIMPLE PAINTING
50   
51       public  Interpreter1() {
52           interpreter();
53       }
54   
55       public static void main(String[] args) {
56           SwingUtilities.invokeLater(new Runnable() {
57               public  void run() {
58                   new Interpreter1();
59               }
60           });
61       }
62   }
63