Interpreter2.java
1    /* 
2     * This program is intended to paint different colored dots in a window 
3     * 
4     * The commands it 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 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.swing.JOptionPane;
17   import javax.swing.SwingUtilities;
18   import painter.SPainter;
19   import shapes.SCircle;
20   
21   public class Interpreter2 {
22   
23       private void interpreter() {
24   
25           SPainter miro = new SPainter("Dot Thing",400,400);
26           miro.setScreenLocation(0,0);
27           SCircle dot = new SCircle(180);
28   
29           while (true) {
30   
31               String command = JOptionPane.showInputDialog(null,"Command?");
32               if ( command == null ) { command = "exit"; }
33               if (command.equalsIgnoreCase("blue")) {
34                   miro.setColor(Color.BLUE);
35                   miro.paint(dot);
36               } else if (command.equalsIgnoreCase("red")) {
37                   miro.setColor(Color.RED);
38                   miro.paint(dot);
39               } else if (command.equalsIgnoreCase("green")) {
40                   miro.setColor(Color.GREEN);
41                   miro.paint(dot);
42               } else if (command.equalsIgnoreCase("yellow")) {
43                   miro.setColor(Color.YELLOW);
44                   miro.paint(dot);
45               } else if (command.equalsIgnoreCase("help")) {
46                   JOptionPane.showMessageDialog(null,"Valid commands are: "
47                           + "RED | BLUE | GREEN | YELLOW | HELP | EXIT ");
48               } else if (command.equalsIgnoreCase("exit")) {
49                   miro.end();
50                   System.out.println("Thank you for viewing the dots ...");
51                   break;
52               } else {
53                   JOptionPane.showMessageDialog(null, "Unrecognizable command: "
54                           + command.toUpperCase());
55               }
56   
57           }
58   
59       }
60   
61       public Interpreter2(){
62           interpreter();
63       }
64   
65       public static void main(String[] args) {
66   
67           SwingUtilities.invokeLater(new Runnable() {
68               @Override
69               public void run() {
70                   new Interpreter2();
71               }
72           });
73   
74       }
75   
76   }
77