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     * - YELOW: 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   
14   package interpreters;
15   
16   import java.awt.Color;
17   import javax.swing.JOptionPane;
18   import javax.swing.SwingUtilities;
19   import painter.SPainter;
20   import shapes.SCircle;
21   
22   public class Interpreter2 {
23   
24       private void interpreter() {
25   
26           //CREATE OBJECTS TO THINK WITH
27           SPainter miro = new SPainter("Dot Thing",400,400);
28           miro.setScreenLocation(0,0);
29           SCircle dot = new SCircle(180);
30   
31           //REPEATEDLY TAKE A COMMAND FROM AN INPUT DIALOG BOX AND INTERPRET IT
32           while ( true ) {
33               String command = JOptionPane.showInputDialog(null,"Command?");
34               if ( command == null) { command = "exit"; } //user clicked on Cancel
35               if ( command.equalsIgnoreCase("blue") ) {
36                   miro.setColor(Color.BLUE);
37                   miro.paint(dot);
38               } else if ( command.equalsIgnoreCase("red") ) {
39                   miro.setColor(Color.RED);
40                   miro.paint(dot);
41               } else if ( command.equalsIgnoreCase("green") ) {
42                   miro.setColor(Color.GREEN);
43                   miro.paint(dot);
44               } else if ( command.equalsIgnoreCase("yellow") ) {
45                   miro.setColor(Color.YELLOW);
46                   miro.paint(dot);
47               } else if ( command.equalsIgnoreCase("help") ) {
48                   JOptionPane.showMessageDialog(null, "Valid commands are: " +
49                           "RED | GREEN | YELLOW | BLUE | HELP | EXIT ");
50               } else if ( command.equalsIgnoreCase("exit") ) {
51                   miro.end();
52                   System.out.println("Thank you for viewing the dots ...");
53                   break;
54               } else {
55                   JOptionPane.showMessageDialog(null, "Uncrecoginzable command: "
56                           + command.toUpperCase());
57               }
58           }
59       }
60   
61       // INFASTRUCTURE FOR SOME SIMPLE PAINTING
62   
63       public Interpreter2() {
64           interpreter();
65       }
66   
67       public static void main(String[] args) {
68           SwingUtilities.invokeLater(new Runnable() {
69               public void run() {
70                   new Interpreter3();
71               }
72           });
73       }
74   }
75