import java.util.concurrent.CountDownLatch;

class CLD {

    static class Task implements Runnable {
        CountDownLatch cdl;
        Task(CountDownLatch cdl){
            this.cdl = cdl;
        } 

        @Override
        public void run() {
            int var = 0;
            for (int i = 0; i < 1000; i++) {
                try {
                    var++;
                    Thread.sleep(1);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
            System.out.println("Ferdig");
            cdl.countDown();


            System.out.println("Fortsetter");
        }
    }



    



    public static void main(String[] args) throws InterruptedException {
        int threads = 3;
        CountDownLatch latch = new CountDownLatch(threads);
        Task t = new Task(latch);
        for (int i = 0; i < threads; i++) {
            new Thread(t).start();
        }


        System.out.println("Venter på trådene");
        latch.await();
        System.out.println("Alle tråder er ferdige.");



        
        



    }
}