Interpreter3.java
1    /* 
2     * This program is intended to paint different colored dots in a window 
3     * 
4     * The commands it 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     * RANDOM: paint a random colored dot 
10    * HELP: show a list of commands in a dialog message box 
11    * EXIT: terminate the program 
12    */
13   
14   package interpreters;
15   
16   import java.awt.Color;
17   import javax.swing.JOptionPane;
18   import javax.swing.SwingUtilities;
19   import painter.SPainter;
20   import shapes.SCircle;
21   
22   public class Interpreter3 {
23   
24       private static Color randomColor() {
25           int rv = (int)(Math.random()*256);
26           int gv = (int)(Math.random()*256);
27           int bv = (int)(Math.random()*256);
28           return new Color(rv,gv,bv);
29       }
30   
31       private void interpreter() {
32   
33           SPainter miro = new SPainter("Dot Thing",400,400);
34           miro.setScreenLocation(0,0);
35           SCircle dot = new SCircle(180);
36   
37           while (true) {
38   
39               String command = JOptionPane.showInputDialog(null,"Command?");
40               if ( command == null ) { command = "exit"; }
41               if (command.equalsIgnoreCase("blue")) {
42                   miro.setColor(Color.BLUE);
43                   miro.paint(dot);
44               } else if (command.equalsIgnoreCase("red")) {
45                   miro.setColor(Color.RED);
46                   miro.paint(dot);
47               } else if (command.equalsIgnoreCase("green")) {
48                   miro.setColor(Color.GREEN);
49                   miro.paint(dot);
50               } else if (command.equalsIgnoreCase("yellow")) {
51                   miro.setColor(Color.YELLOW);
52                   miro.paint(dot);
53               }else if (command.equalsIgnoreCase("random")) {
54                   miro.setColor(randomColor());
55                   miro.paint(dot);
56               } else if (command.equalsIgnoreCase("help")) {
57                   JOptionPane.showMessageDialog(null,"Valid commands are: "
58                           + "RED | BLUE | GREEN | YELLOW | RANDOM | HELP | EXIT ");
59               } else if (command.equalsIgnoreCase("exit")) {
60                   miro.end();
61                   System.out.println("Thank you for viewing the dots ...");
62                   break;
63               } else {
64                   JOptionPane.showMessageDialog(null, "Unrecognizable command: "
65                           + command.toUpperCase());
66               }
67   
68           }
69   
70       }
71   
72       public Interpreter3(){
73           interpreter();
74       }
75       
76       public static void main(String[] args) {
77   
78           SwingUtilities.invokeLater(new Runnable() {
79               @Override
80               public void run() {
81                   new Interpreter3();
82               }
83           });
84   
85       }
86   
87   }
88