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   
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 object 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 ) { command = "exit"; }
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 comments 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               @Override
59               public void run() {
60                   new Interpreter1();
61               }
62           });
63       }
64   }
65