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.swing.JOptionPane;
15   import javax.swing.SwingUtilities;
16   import painter.SPainter;
17   import shapes.SCircle;
18   
19   public class Interpreter1 {
20       private void interpreter() {
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:" + "RED | BLUE | HELP | EXIT" );
38               } else if ( command.equalsIgnoreCase("exit") ) {
39                   miro.end();
40                   System.out.println("Thank you for viewing the dots ...");
41                   break;
42               } else {
43                   JOptionPane.showMessageDialog(null, "Unrecognizable command:" + command.toUpperCase());
44               }
45           }
46       }
47       //INFRASTRUCTURE FOR SOME SIMPLE PAINTING
48   
49       public Interpreter1() {
50           interpreter();
51       }
52   
53       public static void main(String[] args) {
54           SwingUtilities.invokeLater(new Runnable() {
55               public void run() {
56                   new Interpreter1();
57               }
58           });
59       }
60   }
61