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        -HELP:show a list of the commands in a dialogue message box 
7        -EXIT:terminate the program 
8     */
9    package interpreters;
10   import java.awt.Color;
11   import javax.swing.JOptionPane;
12   import javax.swing.SwingUtilities;
13   import painter.SPainter;
14   import shapes.SCircle;
15   
16   public class Interpreter1 {
17       private void interpreter(){
18           //Create objects to think with
19           SPainter micro=new SPainter("Dot Thing",400,400);
20           micro.setScreenLocation(0,0);
21           SCircle dot= new SCircle(180);
22           //Repeatedly take a command from an input dialog box and interpret it
23           while (true){
24               String command=JOptionPane.showInputDialog(null,"Command?");
25               if (command==null){command="exit";}//user clicked on Cancel
26               if (command.equalsIgnoreCase("blue")){
27                   micro.setColor(Color.BLUE);
28                   micro.paint(dot);
29               }else if (command.equalsIgnoreCase("red")) {
30                   micro.setColor(Color.RED);
31                   micro.paint(dot);
32               }else if (command.equalsIgnoreCase("help")) {
33                   JOptionPane.showMessageDialog(null, "Valid commands are:" + "RED, BLUE, HELP, EXIT");
34               }else if (command.equalsIgnoreCase("exit")) {
35                   micro.end();
36                   System.out.println("Thank you for viewing the dots...");
37                   break;
38               }else{
39                   JOptionPane.showMessageDialog(null, "Unrecognizable command:"+ command.toUpperCase());
40               }
41           }
42   
43       }
44       //Infrastructure for some simple painting
45       public Interpreter1(){
46           interpreter();
47       }
48   public static void main(String[] args){
49       SwingUtilities.invokeLater(new Runnable(){
50           public void run(){
51               new Interpreter1();
52           }
53       });
54   
55   
56       }
57   }