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   
12   package interpreters;
13   
14   import java.awt.Color;
15   import javax.swing.JOptionPane;
16   import javax.swing.SwingUtilities;
17   import painter.SPainter;
18   import shapes.SCircle;
19   
20   public class Interpreter1 {
21       private void interpreter(){
22           // CREATE OBJECTS TO THINK WITH
23           SPainter miro = new SPainter("Dot Thing", 400, 400);
24           miro.setScreenLocation(0, 0);
25           SCircle dot = new SCircle(180);
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       // INFRASTRUCTURE FOR SIMPLE PAINTING
51   
52       public Interpreter1(){
53           interpreter();
54       }
55   
56       public static void main(String[] args){
57           SwingUtilities.invokeLater(new Runnable(){
58               public void run(){
59                   new Interpreter1();
60               }
61           });
62       }
63   }
64