1    /* 
2    *This interpreter is intended to paint different colored dots in a window.* 
3    *The commands that the interpreter can recognize and respond to are: 
4    * - BLUE: paint a blue dot 
5    * - RED: paint a red dot 
6    * - HELP: show a list of the commands in a dialog message box 
7    * - EXIT: terminate the program 
8    */
9    
10   package interpreters;
11   
12   import java.awt.Color;
13   import javax.swing.JOptionPane;
14   import javax.swing.SwingUtilities;
15   import painter.SPainter;
16   import shapes.SCircle;
17   
18   public class Interpreter1 {
19       private void interpreter() {
20           //CREATE OBJECTS TO THINK WITH
21           SPainter miro = new SPainter("Dot Thing", 400, 400);
22           miro.setScreenLocation(0, 0);
23           SCircle dot = new SCircle(180);
24   
25           //REPEATEDLY TAKE A COMMAND FROM AN INPUT DIALOG BOX AND INTERPRET IT
26           while (true) {
27               String command = JOptionPane.showInputDialog(null, "Command?");
28               if (command == null) {
29                   command = "exit";
30               } //user clicked on Cancel
31               if (command.equalsIgnoreCase("blue")) {
32                   miro.setColor(Color.BLUE);
33                   miro.paint(dot);
34               } else if (command.equalsIgnoreCase("red")) {
35                   miro.setColor(Color.RED);
36                   miro.paint(dot);
37               } else if ( command.equalsIgnoreCase("help") ) {
38                   JOptionPane.showMessageDialog(null,"Valid commands are: "
39                           + "RED | BLUE | HELP | EXIT ");
40               } else if ( command.equalsIgnoreCase("exit") ) {
41                   miro.end();
42                   System.out.println("Thank you for viewing the dots ...");
43                   break;
44               }  else {
45                   JOptionPane.showMessageDialog(null, "Unrecognizable command: "
46                           + command.toUpperCase());
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   }