Apple Farmers

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

class Main {
    public static void main(String[] args) throws Exception {
        System.out.println("Hello world!");

        List<Apple> apples = Collections.synchronizedList(new ArrayList<>());

        Thread t1 = new Thread(new Farmer(apples));
        t1.start();

        Thread t2 = new Thread(new Farmer(apples));
        t2.start();

        while (apples.size() == 0) {
            // System.out.println(apples.size());
        }

        System.out.println(apples.size() + " main ended");
    }
}

________________________________________________________________________________

import java.util.*;

public class Farmer implements Runnable {
    List<Apple> busket;
    private static int count;
    private int id;
    private int appleCount;

    public Farmer(List<Apple> busket) {
        this.busket = busket;
        id = count++;
    }

    public void makeApple() {
        Apple apple = new Apple("Apple" + appleCount + " by Farmer" + id);
        System.out.println("making apple: " + apple);

        busket.add(apple);
        appleCount++;
    }

    public void run() {
        while (appleCount < 5) {
            makeApple();
        }
    }
}

________________________________________________________________________

public class Apple {
    private String name;

    public String getName() {
        return name;
    }

    public String toString() {
        return name;
    }

    public Apple(String name) {
        this.name = name;
    }
}