1    /* 
2    This is a program that is going to paint dots of different colors. 
3    The commands that the interpreter recognizes: 
4     BLUE 
5     RED 
6     HELP: show list of commands 
7     EXIT: terminate program 
8     */
9    
10   package interpreters;
11   import java.awt.Color;
12   import javax.swing.JOptionPane;
13   import javax.swing.SwingUtilities;
14   import painter.SPainter;
15   import shapes.SCircle;
16   
17   import javax.swing.*;
18   
19   
20   public class Interpreter1 {
21       private void interpreter() {
22           // CREATE OBJECTS TO THINK WITH
23           SPainter miro = new SPainter("Dot Thing", 400,400);
24           miro.setScreenLocation(0,0);
25           SCircle dot = new SCircle(180);
26   
27           // REPEATEDLY TAKE A COMMAND FROM THE INPUT DIALOG BOX AND INTERPRET IT
28           while ( true ) {
29               String command = JOptionPane.showInputDialog(null, "Command?");
30               if ( command == null ) { command = "exit"; } // user clicked on Cancel
31               if ( command.equalsIgnoreCase("blue") ) {
32                   miro.setColor(Color.BLUE);
33                   miro.paint(dot);
34               }
35               else if ( command.equalsIgnoreCase("red") ) {
36                   miro.setColor(Color.RED);
37                   miro.paint(dot);
38               }
39               else if ( command.equalsIgnoreCase("help")) {
40                   JOptionPane.showMessageDialog(null,
41                           "Valid commands are: " + "RED | BLUE | HELP | EXIT" );
42               }
43               else if ( command.equalsIgnoreCase("exit") ) {
44                   miro.end();
45                   System.out.println("Thank you for viewing the dots ...");
46                   break;
47               }
48               else {
49                   JOptionPane.showMessageDialog(null, "Unrecognizable command: ");
50               }
51           }
52       }
53   
54       // REQUIRED INFRASTRUCTURE FOR PAINTING
55   
56       public Interpreter1() {
57          interpreter(); }
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