1    /* 
2     *This intepreter is intended to pain 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 dialogue 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       private void interpreter() {
21           //CREATE OBJECTS TO THINK 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:"
38                   + "RED | BLUE | HELP | EXIT");
39               } else if ( command.equalsIgnoreCase("exit") ) {
40                   miro.end();
41                   System.out.println("Thank you for viewing the dots ...");
42                   break;
43               } else {
44                   JOptionPane.showMessageDialog(null, "Unrecognizable command:"
45                           + command.toUpperCase());
46   
47               }
48           }
49       }
50   
51       // INFRASTRUCTURE 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               public void run() {
60                   new Interpreter1();
61               }
62           });
63       }
64   }