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 dots 
6     * -RED: paint a red fot 
7     * -HELP: show a list of 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 INPUT DIALOG BOX AND INTERPRET IT
29           while (true) {
30               String command = JOptionPane.showInputDialog(null, "Command?");
31               if (command == null) {
32                   command = "exit";
33               }//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("help")) {
41                   JOptionPane.showMessageDialog(null, "Valid commands are: " + "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: " + command.toUpperCase());
48               }
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