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     *  - GREEN: paint a green dot 
8     *  - YELLOW: paint a yellow dot 
9     *  - HELP: show a list of the commands in a dialogue message box 
10    *  - EXIT: terminate the program 
11    */
12   import painter.SPainter;
13   import shapes.SCircle;
14   
15   import javax.swing.*;
16   import java.awt.*;
17   
18   public class Interpreter2 {
19       private void interpreter() {
20   
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("green")) {
37                       miro.setColor(Color.GREEN);
38                       miro.paint(dot);
39               } else if (command.equalsIgnoreCase("yellow")) {
40                   miro.setColor(Color.YELLOW);
41                   miro.paint(dot);
42               } else if (command.equalsIgnoreCase("help")){
43                   JOptionPane.showMessageDialog(null, "Valid commands are:"
44                           + "RED | GREEN | BLUE | YELLOW | HELP | EXIT");
45               } else if ( command.equalsIgnoreCase("exit") ) {
46                   miro.end();
47                   System.out.println("Thank you for viewing the dots ...");
48                   break;
49               } else {
50                   JOptionPane.showMessageDialog(null, "Unrecognizable command:"
51                           + command.toUpperCase());
52   
53               }
54           }
55       }
56   
57       // INFRASTRUCTURE FOR SOME SIMPLE PAINTING
58   
59       public Interpreter2() {
60           interpreter();
61       }
62   
63       public static void main(String[] args) {
64           SwingUtilities.invokeLater(new Runnable(){
65               public void run() {
66                   new Interpreter2();
67               }
68           });
69       }
70   }