1    
2    /* 
3    *This interpreter is intended to paint different colored dots in a window. 
4    * 
5    * The commands that the interpreter can recognize and respond to are: 
6    *  - BLUE: paint a blue dot 
7    *  - RED: paint a red dot 
8    *  - HELP: show a list of the commands in a dialog message box 
9    *  - EXIT: terminate the program 
10   */
11   package interpreters;
12   import painter.SPainter;
13   import shapes.SCircle;
14   import javax.swing.*;
15   import java.awt.*;
16   
17   public class Interpreter1 {
18   
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("help")) {
37                   JOptionPane.showMessageDialog(null, "Valid commands are: "
38                           + "RED | BLUE | HELP | EXIT") ;
39                   } else if ( command.equalsIgnoreCase("exit")) {
40                   miro.end();
41                   System.out.println("Thank you for viewing the dots ...");
42                   break;
43                   } else {
44                   JOptionPane.showMessageDialog(null, "Unrecognizable command:"
45                           + command.toUpperCase());
46                   }
47               }
48   
49       }
50   
51       //INFRASTRUCTURE FOR SOME SIMPLE PAINTING
52   
53       public Interpreter1() {
54           interpreter();
55           }
56   
57           public static void main(String[] args) {
58           SwingUtilities.invokeLater(new Runnable() {
59   public void run() {
60                   new Interpreter1();
61                   }
62           });
63           }
64   }
65   
66