CS1 Standard Demo Page

/*
 *This program interprets melodic lines given in ABC notation as a
 * chromesthete might.
 *
 * A Pitch class will be defined, and will take center stage in the procesing.
 *
 * Interpreting a melody in ABC notation will amount to flashing
 * colored rectangles for prescribed durations, while sounding
 * the pitch! The color of the rectangle wil correspond to pitch class.
 * The duration will correspond to the duration of the note.
 *
 * For this first version of the program, the duration will be held
 * constant at 1 beat.
 *
 * Three sorts of images will appear on the screen, the chromesthetic
 * output box, a text input box, and a error message box. Simplicity
 * of design is rendered by permitting only one box to be on the screen
 * at a time.
 *
 * ABC represents notes in a manner consistent with these examples:
 * C, D, E, C D E c d e
 *
 */
package chromesthesia0;

import javax.swing.*;
import painter.SPainter;
import java.util.Scanner;
import javax.swing.SwingUtilities;

public class Chromesthesia {

    public static void main(String[] args){
        SwingUtilities.invokeLater(new ThreadForGUI());
    }
    private static class ThreadForGUI implements Runnable{
        public void run(){
            new Chromesthesia();
        }
    }
    public Chromesthesia(){
        interpreter();
    }

    private static SPainter miro;
    private static Pitch[] pitches;

    public static void interpreter(){
        intialization();

        while(true){
            String input = getInput();
            if (input.equalsIgnoreCase("EXIT")){
                break;
            }else {
                try{
                    playMelody(input,pitches);
                }catch (Exception ex){
                    showErrorMessage(ex.toString());
                }
            }
        }
        cleanup();
    }
    private static Pitch[] establishPitches(SPainter painter){
        Pitch[] pitches = new Pitch[9];
        Pitch pitchMiddleC = new Pitch("C", painter);
        pitches[0] = pitchMiddleC;
        Pitch pitchLowC = new Pitch("C," , painter);
        pitches[1] = pitchLowC;
        Pitch pitchHighC = new Pitch("c", painter);
        pitches[2] = pitchHighC;
        Pitch pitchMiddleD = new Pitch("D", painter);
        pitches[3] = pitchMiddleD;
        Pitch pitchLowD = new Pitch("D," ,painter);
        pitches[4] = pitchLowD;
        Pitch pitchHighD = new Pitch("d", painter);
        pitches[5] = pitchHighD;
        Pitch pitchMiddleE = new Pitch("E", painter);
        pitches[6] = pitchMiddleE;
        Pitch pitchLowE = new Pitch("E,", painter);
        pitches[7] = pitchLowE;
        Pitch pitchHighE = new Pitch("e", painter);
        pitches[8] = pitchHighE;
        return pitches;
    }

    private static Pitch find(String token, Pitch[] pitches) throws Exception{
        for (int i = 0; i < pitches.length; i = i + 1){
            Pitch pitch = pitches[i];
            if( pitch.abcName().equals(token)){
                return pitch;
            }
        }
        throw new Exception("### PITCH " + token + "NOT FOUND");
    }
    private static void display(Pitch[] pitches){
        for( int i = 0; i < pitches.length; i = i +1){
            System.out.println(pitches[i].toString());
        }
    }
    private static void playMelody(String input, Pitch[] pitches) throws Exception{
        Scanner scanner = new Scanner(input);
        while( scanner.hasNext()){
            String token =  scanner.next();
            Pitch pitch = find(token, pitches);
            pitch.play("1");
        }
    }
    static private void showErrorMessage(String message){
        miro.setVisible(false);
        JOptionPane.showMessageDialog(null, message);
    }

    private static void intialization(){

        miro = new SPainter("Chromesthesia", 500, 500);
        miro.setVisible(false);
        miro.setBrushWidth(7);

        pitches =  establishPitches(miro);
        display(pitches);
    }

    private static String getInput(){
        miro.setVisible(false);
        String label = "Please enter a melody in ABC notation, or EXIT ...     ";
        String input = JOptionPane.showInputDialog(null, label);
        miro.setVisible(true);
        if (input == null ) {input = "";}
        return input;
    }
    static private void cleanup(){
        System.exit(0);
    }
}