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     * -HELP: show a list of the commands in a dialog message box 
8     * -EXIT: terminate the program 
9     */
10   
11   package interpreters;
12   
13   import java.awt.Color;
14   import javax.print.attribute.standard.JobMessageFromOperator;
15   import javax.swing.JOptionPane;
16   import javax.swing.SwingUtilities;
17   import painter.SPainter;
18   import shapes.SCircle;
19   
20   public class Interpreter1 {
21   
22       private void interpreter() {
23   
24           //CREATE OBJECTS TO THINK WITH
25           SPainter miro = new SPainter("Dot Thing",400,400);
26           miro.setScreenLocation(0,0);
27           SCircle dot = new SCircle(180);
28   
29           //REPEATEDLY TAKE A COMMAND FROM AN INPUT DIALOG BOX AND INTERPRET IT
30           while ( true ) {
31               String command = JOptionPane.showInputDialog(null,"Command?");
32               if ( command == null ) { command = "exit"; } // user clicked on Cancel
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("help")) {
40                   JOptionPane.showMessageDialog(null,"Valid commands are: " + "RED | BLUE | HELP | EXIT ");
41               }else if ( command.equalsIgnoreCase("exit")) {
42                   miro.end();
43                   System.out.println("Thank you for viewing the dots ...");
44                   break;
45               }else{
46                   JOptionPane.showMessageDialog(null,"Unrecognizable command " + 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   }
65