A little push using Semaphones

[kendel]

Let me first explain the project: I have 1 chef 3 homers, (Producer-Consumer problem). The chef has an unlimited supply of 3 ingredients. Each homer has 1 of the 3 ingredients in unlimited supply, but needs 2 of the other ingredients to complete the donut. Each homer can take 2 of the ingredients he needs to complete the donut. I must use semaphores to complete the assignment.

This is the code I have come up with, but I am unable to get much further. Maybe someone can push me in the right direction.

//package donutchef;
import java.util.LinkedList;
import java.util.concurrent.Semaphore;
import java.util.List;

/**
 *
 * @author Telamon
 */
public class Donut
{

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args)
    {
        // TODO code application logic here

        Homer h1 = Homer.getInstance("Homer 1");
        Homer h2 = Homer.getInstance("Homer 2");
        Homer h3 = Homer.getInstance("Homer 3");

        DonutChef dc1 = DonutChef.getInstance();

        Table table1 = Table.getInstance();


        table1.addCustomer(h1);
        table1.addCustomer(h2);
        table1.addCustomer(h3);

        table1.addChef(dc1);

        Thread Homer1 = new  Thread(h1);
        Thread Homer2 = new  Thread(h2);
        Thread Homer3 = new  Thread(h3);

        Thread DonutChef1 = new Thread(dc1);





    }

}


class DonutChef implements Runnable
{

    private DonutChef()
    {
    }

    public static DonutChef getInstance()
    {
        return new DonutChef();
    }

    public void notifyChef(){
    }

    public void run()
    {
        throw new UnsupportedOperationException("Not supported yet.");
    }

}

class Homer implements Runnable
{

    private String name;

    private Homer ()
    {
    }

    private Homer (String name) {
        this.name = name;
    }

    public static Homer getInstance(String name){
        return new Homer(name);
    }

    private void makeDonut()
    {
    }

    private void eatDonut()
    {
    }



    public void run() {
        throw new UnsupportedOperationException("Not supported yet.");
    }
}





class Table {
    private static Semaphore dsHomer = new Semaphore(0);
    private static Semaphore fillingHomer = new Semaphore(0);
    private static Semaphore sprinklesHomer = new Semaphore(0);

    private List<Homer> Customers;
    private List<DonutChef> Chefs;

    private Table(){
        Customers = new LinkedList<Homer>();
        Chefs = new LinkedList<DonutChef>();
    }

    public static Table getInstance(){
        return new Table();
    }

    public void addCustomer(Homer h){
        Customers.add(h);
    }

    public void addChef(DonutChef donutChef){
        Chefs.add(donutChef);
    }

}