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 java.awt.Color;
16   import javax.print.attribute.standard.JobMessageFromOperator;
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: " + "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 " + command.toUpperCase());
55               }
56           }
57       }
58   
59       //INFRASTRUCTURE FOR SOME SIMPLE PAINTING
60   
61       public Interpreter2() {
62           interpreter();
63       }
64   
65       public static void main(String[] args) {
66           SwingUtilities.invokeLater(new Runnable() {
67               public void run() {
68                   new Interpreter2();
69               }
70           });
71       }
72   }