class ParallellTil1000000 {

    int teller;
    int[] tellerarray = new int[10];

    class TelleArbeider implements Runnable {
        /*
         * En arbeider som øker telleren 100000
         * ganger i en for-løkke
         */
        int id;

        TelleArbeider(int id) {
            this.id = id;
        }

        @Override
        public void run() {
            for (int i = 0; i < 100_000; i++) {
                tellerarray[id]++;
            }
        }
    }

    public void tell() {

        Thread[] traader = new Thread[10];

        for (int i = 0; i < 10; i++) {
            traader[i] = new Thread(new TelleArbeider(i));
            traader[i].start();
        }

        for (int i = 0; i < 10; i++) {
            try {
                traader[i].join();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }

        for (int i = 0; i < 10; i++) {
            teller += tellerarray[i];
        }
    }

    public static void main(String[] args) {

        ParallellTil1000000 p = new ParallellTil1000000();
        p.tell();
        System.out.println(p.teller);
    }
}