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   
12   package interpreters;
13   
14   import java.awt.Color;
15   import javax.swing.JOptionPane;
16   import javax.swing.SwingUtilities;
17   import painter.SPainter;
18   import shapes.SCircle;
19   
20   public class Interpreter1 {
21   
22       private void interpreter() {
23   
24           //CREATE OBJECTS TO THINK WITH
25           SPainter miro = new SPainter("Dot Thing",400,400);
26           miro.setScreenLocation(0,0);
27           SCircle dot = new SCircle(180);
28   
29           //REPEATEDLY TAKE A COMMAND FROM AN INPUT DIALOG BOX AND INTERPRET IT
30           while ( true ) {
31               String command = JOptionPane.showInputDialog(null,"Command?");
32               if ( command == null) { command = "exit"; } //user clicked on Cancel
33               if ( command.equalsIgnoreCase("blue") ) {
34                   miro.setColor(Color.BLUE);
35                   miro.paint(dot);
36               } else if ( command.equalsIgnoreCase("red") ) {
37                   miro.setColor(Color.RED);
38                   miro.paint(dot);
39               } else if ( command.equalsIgnoreCase("help") ) {
40                   JOptionPane.showMessageDialog(null, "Valid commands are: " +
41                           "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, "Uncrecoginzable command: "
48                           + command.toUpperCase());
49               }
50           }
51       }
52   
53       // INFASTRUCTURE FOR SOME SIMPLE PAINTING
54   
55       public Interpreter1() {
56           interpreter();
57       }
58   
59       public static void main(String[] args) {
60           SwingUtilities.invokeLater(new Runnable() {
61               public void run() {
62                   new Interpreter3();
63               }
64           });
65       }
66   }
67   
68   
69