package com.timbuchalka;

public class Main {

    public static void main(String[] args) {
        Countdown countdown = new Countdown();

        CountdownThread t1 = new CountdownThread(countdown);
        t1.setName("Thread 1");
        CountdownThread t2 = new CountdownThread(countdown);
        t2.setName("Thread 2");

        t1.start();
        t2.start();
    }
}

class Countdown {
    public  int i ;// using an instance variable rather than local variable

    public void doCountdown() {

        for(  i=10; i > 0; i--) {
            System.out.println( Thread.currentThread().getName() + ": i =" + i);
        }
    }
}

class CountdownThread extends Thread {
    private Countdown threadCountdown;

    public CountdownThread(Countdown countdown) {
        threadCountdown = countdown;
    }

    public void run() {
        threadCountdown.doCountdown();
    }
}