1    /* 
2     * This interpreter is intended to paint different colored dots in a window. * 
3     * The commands that the interpreter can recognize and respond to are: 
4     * - BLUE: paint a blue dot 
5     * - RED: paint a red dot 
6     * - HELP: show a list of the commands in a dialog message box 
7     * - EXIT: terminate the program 
8     */
9    
10   package interpreters;
11   
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   
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 AN 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               } else if ( command.equalsIgnoreCase("red")) {
35                   miro.setColor( Color.RED );
36                   miro.paint(dot);
37               } else if ( command.equalsIgnoreCase("help")) {
38                   JOptionPane.showInputDialog( null, "Valid commands are: "
39                   + "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:"
46                   +command.toUpperCase());
47               }
48           }
49       }
50   
51       // INFRSTRUCTURE FOR SOME SIMPLE PAINTING
52   
53       public Interpreter1() {
54           interpreter();
55       }
56   
57       public static void main(String[] args) {
58           SwingUtilities.invokeLater(new Runnable() {
59               @Override
60               public void run() {
61                   new Interpreter1();
62               }
63           });
64       }
65   }
66