import java.util.concurrent.locks.ReentrantLock;

import java.util.concurrent.locks.Lock;

class Tell implements Runnable
{
    Lock laas = new ReentrantLock();
    final int MAXCOUNT = 500000000;
    public int fellesTeller = 0;

    @Override
    public void run() {
        int hallo = 0;
        for (int i = 0; i < MAXCOUNT; i++)
        {
            laas.lock();
            try {
                if (++fellesTeller%100000000 == 0) {
                    System.out.println("Hello for the " + ++hallo + "th time");
                }
            } finally {
                laas.unlock();
            }
        }
        System.out.println(fellesTeller);
    }

        public static void main(String[] args) {
            Runnable r = new Tell();
            Thread t = new Thread(r);
            Thread t2 = new Thread(r);
            t.start();
            t2.start();
        }
}