CS1 Standard Demo Page

/*
 * This interpreter is intended to paint different colored dots in a window
 *The commands that the interpreter can recognize and respond are:
 * - BLUE: paint a blue dot
 * - RED: paint a red dot
 * - HELP: show a list of the commands in a dialogue message box
 * - EXIT: terminate the program
*/
package interpreters;

import java.awt.Color;
import javax.swing.JOptionPane;
import javax.swing.SwingUtilities;
import painter.SPainter;
import shapes.SCircle;
/**
 *
 * @author dmaslows
 */
public class Interpreter3 {

    private void interpreter() {
    
        // CREATE OBJECTS TO THINK WITH
        SPainter miro = new SPainter("Dot Thing",400,400);
        miro.setScreenLocation(0,0);
        SCircle dot = new SCircle(180);
        
        //REPEATEDLY TAKE A COMMAND FROM AN INPUT DIALOG BOX AND INTERPRET IT
        while ( true ) {
            String command = JOptionPane.showInputDialog(null,"Command?");
            if ( command == null ) { command = "exit"; } // user clicked on Cancel
            if ( command.equalsIgnoreCase("blue")) {
                miro.setColor(Color.BLUE);
                miro.paint(dot);
            } else if ( command.equalsIgnoreCase("red")) {
                miro.setColor(Color.RED);
                miro.paint(dot);
            }   if ( command.equalsIgnoreCase("green")) {
                miro.setColor(Color.GREEN);
                miro.paint(dot);
            } else if ( command.equalsIgnoreCase("yellow")) {
                miro.setColor(Color.YELLOW);
                miro.paint(dot);
            } else if ( command.equalsIgnoreCase("random")) {
                miro.setColor(randomColor());
                miro.paint(dot);
            } else if ( command.equalsIgnoreCase("help")) {
                JOptionPane.showMessageDialog(null,"Valid commands are: "
                + "RED | BLUE | GREEN | YELLOW | RANDOM |HELP | EXIT ");
             } else if ( command.equalsIgnoreCase("exit")) {
                 miro.end();
                 System.out.println("Thank you for viewing the dots ...");
                 break;
             } else {
                 JOptionPane.showMessageDialog(null, "Unrecognizable command: "
                 + command.toUpperCase());
            }
        }
   
    }
    //INFRASTRUCTURE FOR SOME SIMPLE PAINTING

    public Interpreter3() {
    interpreter();
    }
  public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                new Interpreter3();

            }
        });
    }

    private static Color randomColor() {
       int rv = (int)(Math.random()*256);
       int gv = (int)(Math.random()*256);
       int bv = (int)(Math.random()*256);
       return new Color(rv,gv,bv);
    }
    
}