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     * -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           //Create objects to think with
26           SPainter miro= new SPainter("Dot Thing",400,400);
27           miro.setScreenLocation(0,0);
28           SCircle dot = new SCircle(180);
29   
30           //Repeatedly take a command from an input dialog box and interpret it
31           while (true) {
32               String command = JOptionPane.showInputDialog(null, "Command?");
33               if (command == null) {command = "exit";} //user clicked on cancel
34               if (command.equalsIgnoreCase("blue")){
35                   miro.setColor(Color.BLUE);
36                   miro.paint(dot);
37               } else if (command.equalsIgnoreCase("red")) {
38                   miro.setColor(Color.RED);
39                   miro.paint(dot);
40               } else if (command.equalsIgnoreCase("help")) {
41                   JOptionPane.showMessageDialog(null,"Valid commands are:"+"RED | BLUE | GREEN | YELLOW | HELP | EXIT");
42               } else if (command.equalsIgnoreCase("exit")){
43                   miro.end();
44                   System.out.println("Thank you for viewing the dots ...");
45                   break;
46               } else if (command.equalsIgnoreCase("green")){
47                   miro.setColor(Color.GREEN);
48                   miro.paint(dot);
49               } else if (command.equalsIgnoreCase("yellow")){
50                   miro.setColor(Color.YELLOW);
51                   miro.paint(dot);
52               } else {
53                   JOptionPane.showMessageDialog(null, "Unrecognizable command: "+ command.toUpperCase());
54               }
55           }
56       }
57   
58       //infrastructure for some simple painting]
59       public Interpreter2(){
60           interpreter();
61       }
62       public static void main(String[] args){
63           SwingUtilities.invokeLater(new Runnable(){
64               public void run(){
65                   new Interpreter2();
66               }
67           });
68       }
69   }
70