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 are: 
5     * -BLUE: paint a blue dot 
6     * - RED: paint a red dot 
7     * -GREEN: paint a green dot 
8     * -YELLOW: yellow 
9     * -HELP: show a list of the commands in a dialog message box 
10    * -EXIT: terminate the program 
11    */
12   package interpreters;
13   
14   import java.awt.Color;
15   import javax.swing.JOptionPane;
16   import javax.swing.SwingUtilities;
17   import painter.SPainter;
18   import shapes.SCircle;
19   
20   public class Interpreter2 {
21       private void interpreter(){
22   
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 IT
29           while ( true ) {
30               String command = JOptionPane.showInputDialog(null,"Command?");
31               if ( command == null ) {command = "exit"; } //user clicked on Cancel
32               if (command.equalsIgnoreCase("blue") ){
33                   miro.setColor(Color.BLUE);
34                   miro.paint(dot);
35               } else if ( command.equalsIgnoreCase("red") ) {
36                   miro.setColor(Color.RED);
37                   miro.paint(dot);
38               } else if ( command.equalsIgnoreCase("green") ) {
39                   miro.setColor(Color.GREEN);
40                   miro.paint(dot);
41               } else if ( command.equalsIgnoreCase("yellow") ) {
42                   miro.setColor(Color.YELLOW);
43                   miro.paint(dot);
44               } else if ( command.equalsIgnoreCase("help") ) {
45                   JOptionPane.showMessageDialog(null, "Valid commands are:" + "RED | BLUE | GREEN | YELLOW | HELP | EXIT ");
46               } else if ( command.equalsIgnoreCase("exit") ) {
47                   miro.end();
48                   System.out.println("Thank you for viewing the dots ...");
49                   break;
50               } else {
51                   JOptionPane.showMessageDialog(null, "Unrecognizable command:" + command.toUpperCase());
52               }
53           }
54       }
55   
56       // INFRASRTUCTURE FOR SOME SIMPLE PAINTING
57   
58       public Interpreter2() {
59           interpreter();
60       }
61   
62       public static void main(String[] args) {
63           SwingUtilities.invokeLater(new Runnable() {
64               public void run() {
65                   new Interpreter3();
66               }
67           });
68       }
69   }
70