Witam

W zalączonym kodzie chcę doodać do obsługi przycisku STARt jednoczesne odliczanioe 3 progressbarow.
Ogolnie w oknie są 3 progressBary symbolizujące poziom zapelnienia skladnikiem i 1 głowny ProgressbAr który odlicza wyprodukowane ciastka wypisując w oknie ponizej.

Do zainteresowanych poprzednim moim postem i sposobem odwolania sie do wartosci pola to wydaje mi sie ze public static int w a potem PRogressBarDemo.w dziala Jezeli nie to wyprowadzcie mnei z bledu.

Wracajac do ProgressBarow mam problem z prawidłowym ich działaniem procenty powinny spadać i synchronizowaniem ich z przyciskiem start . Normalnie jakby te 3 progressBary byly w jednej klasie to odwolanie do metody iterate w klasie main wygladalo by :
frame.iterate());

A w tak złożonej klasie to nie wiem.

Prosba o wskazówki

package GUI;


import java.awt.*;
import java.awt.event.*;

import javax.print.attribute.standard.JobName;
import javax.swing.*;


public class ProgressbarDemo extends JPanel
                             implements ActionListener {
    public final static int ONE_SECOND = 1000;

    private JProgressBar progressBar;
    private Timer timer;
    private JButton startButton;
    private LongTask task;
    private JTextArea taskOutput;
    private String newline = "\n";
    public static int c,tl,m,z;
    private NumericTextField flourInt,fatInt;

    JProgressBar maka,tluszcz,cukier;
    JTextArea out;
    JButton find;
    Thread runner;
    int num = 0;
    JLabel cukierText,tluszczText,makaText;
    
    public ProgressbarDemo() {
        super(new BorderLayout());
        task = new LongTask();
        int k;

        //Create the demo's UI.
        startButton = new JButton("Start");
        startButton.setActionCommand("start");
        startButton.addActionListener(this);
        JTextField flourText=  new JTextField("85",5);
        JLabel flourLabel  = new JLabel("maka");
        JTextField sugarText=  new JTextField("80",5);
        JLabel sugarLabel  = new JLabel("cukier");
        JTextField fatText=  new JTextField("60",5);
        JLabel fatLabel  = new JLabel("tluszcz");
        tl = Integer.parseInt(fatText.getText());
        m = Integer.parseInt(flourText.getText());
        c = Integer.parseInt(sugarText.getText());
        z  = Math.min((Math.min(c,tl)),m);
        // Temp pieca
        JTextField piecText=  new JTextField("120",5);
        JLabel piecLabel  = new JLabel("temperatura pieca");

        progressBar = new JProgressBar(0, task.getLengthOfTask());
        progressBar.setValue(0);
        progressBar.setStringPainted(true);

        taskOutput = new JTextArea(4, 65);
        taskOutput.setMargin(new Insets(5,5,5,5));
        taskOutput.setEditable(false);
        taskOutput.setCursor(null); //inherit the panel's cursor
                                    //see bug 4851758

        JPanel panel = new JPanel();
        
        
        panel.add(startButton);
        panel.add(progressBar);
        JPanel panel2 = new JPanel();
        panel2.add(flourLabel);
        panel2.add(flourText);
        panel2.add(sugarLabel);
        panel2.add(sugarText);
        panel2.add(fatLabel);
        panel2.add(fatText);
        panel2.add(piecLabel);
        panel2.add(piecText);

        
        add(panel2, BorderLayout.WEST);
        
     
        JPanel pane = new JPanel();
        pane.setLayout(new GridLayout(3, 1));
        cukierText  = new JLabel("    ilosc cukru");
        UIManager.put("ProgressBar.foreground", new Color(118, 32, 128));
        cukier = new JProgressBar(0, 100);
        cukier.setValue(87);
        cukier.setStringPainted(true);
        pane.add(cukier);
        pane.add(cukierText);
        
        setContentPane(pane);
        makaText  = new JLabel("    ilosc maki");
        UIManager.put("ProgressBar.foreground", new Color(8, 32, 128));
        maka = new JProgressBar(0, 100);
    
        maka.setValue(50);
        maka.setStringPainted(true);
        pane.add(maka);
        pane.add(makaText);
        
        setContentPane(pane);
        tluszczText  = new JLabel("    ilosc tluszczu");
        UIManager.put("ProgressBar.foreground", new Color(8, 132, 128));
        tluszcz = new JProgressBar(0, 100);
        tluszcz.setValue(41);
        tluszcz.setStringPainted(true);
        pane.add(tluszcz);
        pane.add(tluszczText);
        add(panel, BorderLayout.PAGE_START);
        add(new JScrollPane(taskOutput), BorderLayout.EAST);
        setBorder(BorderFactory.createEmptyBorder(20, 20, 20, 20));
        add(pane,BorderLayout.SOUTH);

        //Create a timer.
        timer = new Timer(ONE_SECOND, new ActionListener() {
            public void actionPerformed(ActionEvent evt) {
                progressBar.setValue(task.getCurrent());
                String s = task.getMessage();
                if (s != null) {
                    taskOutput.append(s + newline);
                    taskOutput.setCaretPosition(
                            taskOutput.getDocument().getLength());
                }
                if (task.isDone()) {
                    Toolkit.getDefaultToolkit().beep();
                    timer.stop();
                    startButton.setEnabled(true);
                    setCursor(null); //turn off the wait cursor
                    progressBar.setValue(progressBar.getMinimum());
                }
            }
        });
    }
    private void setContentPane(JPanel pane) {
	
	}

    public void actionPerformed(ActionEvent evt) {
        startButton.setEnabled(false);
        setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
        task.go();
        timer.start();
            }
    /**
     * Create the GUI and show it.  For thread safety,
     * this method should be invoked from the
     * event-dispatching thread.
     */
    public void iterate() {
        while (m > 0) {
            maka.setValue(m);
            try {
                Thread.sleep(100);
            } catch (InterruptedException e) { }
            m -= 5;
        }
    }
    public void iterate2() {
        while (c > 0) {
            cukier.setValue(c);
            try {
                Thread.sleep(100);
            } catch (InterruptedException e) { }
            c -= 5;
        }
    }
    public void iterate3() {
        while (tl > 0) {
            tluszcz.setValue(tl);
            try {
                Thread.sleep(100);
            } catch (InterruptedException e) { }
            tl -= 5;
        }
    }
 
}
class LongTask {
    private int lengthOfTask;
    private int current = 0;
    private boolean done = false;
    private boolean canceled = false;
    private String statMessage;

    public LongTask() {
        lengthOfTask =ProgressbarDemo.z;
    }
    /**
     * Called from ProgressBarDemo to start the task.
     */
    public void go() {
        final SwingWorker worker = new SwingWorker() {
            public Object construct() {
                current = 0;
                done = false;
                canceled = false;
                statMessage = null;
                return new ActualTask();
            }
        };
        worker.start();
    }

    public int getLengthOfTask() {
        return ProgressbarDemo.z;
    }

    public int getCurrent() {
        return current;
    }

    public void stop() {
        canceled = true;
        statMessage = null;
    }

    public boolean isDone() {
        return done;
    }


    public String getMessage() {
        return statMessage;
    }

    class ActualTask {
        ActualTask() {
            //Fake a long task,
            //making a random amount of progress every second.
            while (!canceled && !done) {
                try {
                    Thread.sleep(1000); //sleep for a second
                    current +=5 ; //make some progress
                    if (current >= ProgressbarDemo.z) {
                        done = true;
                        current = ProgressbarDemo.z;
                    }
                    statMessage = "Wyprodukowano " + current +
                                  " z " + ProgressbarDemo.z + " Ciastek .";
                } catch (InterruptedException e) {
                    System.out.println("ActualTask interrupted");
                }
            }
        }
    }
}

abstract class SwingWorker {
    private Object value;  // see getValue(), setValue()


    private static class ThreadVar {
        private Thread thread;
        ThreadVar(Thread t) { thread = t; }
        synchronized Thread get() { return thread; }
        synchronized void clear() { thread = null; }
    }

    private ThreadVar threadVar;

    protected synchronized Object getValue() { 
        return value; 
    }

    private synchronized void setValue(Object x) { 
        value = x; 
    }

 
    public abstract Object construct();


    public void finished() {
    }

    public void interrupt() {
        Thread t = threadVar.get();
        if (t != null) {
            t.interrupt();
        }
        threadVar.clear();
    }

   
    public Object get() {
        while (true) {  
            Thread t = threadVar.get();
            if (t == null) {
                return getValue();
            }
            try {
                t.join();
            }
            catch (InterruptedException e) {
                Thread.currentThread().interrupt(); // propagate
                return null;
            }
        }
    }



    public SwingWorker() {
        final Runnable doFinished = new Runnable() {
           public void run() { finished(); }
        };

        Runnable doConstruct = new Runnable() { 
            public void run() {
                try {
                    setValue(construct());
                }
                finally {
                    threadVar.clear();
                }

                SwingUtilities.invokeLater(doFinished);
            }
        };

        Thread t = new Thread(doConstruct);
        threadVar = new ThreadVar(t);
    }

    /**
     * Start the worker thread.
     */
    public void start() {
        Thread t = threadVar.get();
        if (t != null) {
            t.start();
        }
    }
}