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     * -GREEN: paint a green dot 
8     * -YELLOW: paint a yellow dot 
9     * -HElP: show a list of the commands in a dialog message box 
10    * -EXIT: terminate the program 
11    */
12   
13   package interpreters;
14   
15   import painter.SPainter;
16   import shapes.SCircle;
17   
18   import javax.swing.*;
19   import java.awt.*;
20   
21   class Interpreters2 {
22       private void interpreter() {
23           //CREATE OBJECTS TO THINK WITH
24           SPainter miro = new SPainter("Dot Thing", 400, 400);
25           miro.setScreenLocation(0, 0);
26           SCircle dot = new SCircle(180);
27   
28           //REPEATEDLY TAKE A COMMAND FROM AN INPUT DIALOG BOX AND INTERPRET
29           while (true) {
30               String command = JOptionPane.showInputDialog(null, "Command?");
31               if (command == null) {
32                   command = "exit";
33               } //user clicked on Cancel
34               if (command.equalsIgnoreCase("blue") ) {
35                   miro.setColor(Color.BLUE);
36                   miro.paint(dot);
37               } else if (command.equalsIgnoreCase("red") ) {
38                   miro.setColor(Color.RED);
39                   miro.paint(dot);
40               } else if (command.equalsIgnoreCase("green") ) {
41                   miro.setColor(Color.GREEN);
42                   miro.paint(dot);
43               } else if (command.equalsIgnoreCase("yellow") ) {
44                   miro.setColor(Color.YELLOW);
45                   miro.paint(dot);
46               } else if (command.equalsIgnoreCase("help") ) {
47                   JOptionPane.showMessageDialog(null, "Valid commands are:"
48                           + "RED | BLUE | GREEN | YELLOW | HELP | EXIT ");
49               } else if (command.equalsIgnoreCase("exit")) {
50                   miro.end();
51                   System.out.println("Thank you for viewing the dots ...");
52                   break;
53               } else {
54                   JOptionPane.showMessageDialog(null, "Unrecognizable command: "
55                           + command.toUpperCase());
56               }
57           }
58       }
59       //INFRASTRUCTURE FOR SOME SIMPLE PAINTING
60   
61       public Interpreters2() {
62           interpreter();
63       }
64   
65       public static void main(String[] args) {
66           SwingUtilities.invokeLater(new Runnable() {
67               ;
68               public void run () {
69                   new Interpreters2();
70               }
71           });
72       }
73   }
74