1    /* 
2    * This interpreter is intended to paint different color 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   import java.awt.Color;
13   import javax.swing.JOptionPane;
14   import javax.swing.SwingUtilities;
15   import painter.SPainter;
16   import shapes.SCircle;
17   
18   public class Interpreter1 {
19   
20       private void interpreter() {
21           //Create objects 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               } else if ( command.equalsIgnoreCase("help")) {
37                   JOptionPane.showMessageDialog(null, "Valid commands are: " + "RED | BLUE | HELP | EXIT ");
38               } else if ( command.equalsIgnoreCase("exit")) {
39                   miro.end();
40                   System.out.println("Thank You for viewing the dots ...");
41                   break;
42               } else {
43                   JOptionPane.showMessageDialog(null, "Unrecognizable command: " + command.toUpperCase());
44               }
45           }
46       }
47   
48       // INFRASTRUCTURE FOR SOME SIMPLE PAINTING
49   
50       public Interpreter1() {
51           interpreter();
52       }
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