1    /* 
2        This interpreter is intended to paint different colored dots in a window. 
3        The commands that the interpreter can recognize and respond to are 
4        -BLUE: paint a blue dot 
5        -RED: paint a red dot 
6        -GREEN: paint a green dot 
7        -YELLOW:paint a yellow dot 
8        -HELP:show a list of the commands in a dialogue message box 
9        -EXIT:terminate the program 
10    */
11   package interpreters;
12   import java.awt.Color;
13   import javax.swing.JOptionPane;
14   import javax.swing.SwingUtilities;
15   import painter.SPainter;
16   import shapes.SCircle;
17   
18   public class Interpreter2 {
19       private void interpreter(){
20           //Create objects to think with
21           SPainter micro=new SPainter("Dot Thing",400,400);
22           micro.setScreenLocation(0,0);
23           SCircle dot= new SCircle(180);
24           //Repeatedly take a command from an input dialog box and interpret it
25           while (true){
26               String command=JOptionPane.showInputDialog(null,"Command?");
27               if (command==null){command="exit";}//user clicked on Cancel
28               if (command.equalsIgnoreCase("blue")){
29                   micro.setColor(Color.BLUE);
30                   micro.paint(dot);
31               }else if (command.equalsIgnoreCase("red")) {
32                   micro.setColor(Color.RED);
33                   micro.paint(dot);
34               }else if (command.equalsIgnoreCase("green")) {
35                   micro.setColor(Color.GREEN);
36                   micro.paint(dot);
37               }else if (command.equalsIgnoreCase("yellow")) {
38                   micro.setColor(Color.YELLOW);
39                   micro.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                   micro.end();
44                   System.out.println("Thank you for viewing the dots...");
45                   break;
46               }else{
47                   JOptionPane.showMessageDialog(null, "Unrecognizable command:"+ command.toUpperCase());
48               }
49           }
50   
51       }
52       //Infrastructure for some simple painting
53       public Interpreter2(){
54           interpreter();
55       }
56       public static void main(String[] args){
57           SwingUtilities.invokeLater(new Runnable(){
58               public void run(){
59                   new Interpreter2();
60               }
61           });
62   
63   
64       }
65   }