watki

import java.util.logging.Level;
import java.util.logging.Logger;

class Zadanie implements Runnable {

    @Override
    public void run() {
        for (long i = 0; i <= 1000000; i++) {
            if (i % 1000 == 0) {
                System.out.println(i);
            }
        }
    }
}

public class NewClass {

    public static void main(String[] args) {

        Thread t = new Thread(new Zadanie());
        t.start();

        try {
            t.join();
//        while(true) {
//            try {
//                Thread.sleep(1000);
//            } catch (InterruptedException ex) {
//                Logger.getLogger(NewClass.class.getName()).log(Level.SEVERE, null, ex);
//            }
//
//        }
        } catch (InterruptedException ex) {
            Logger.getLogger(NewClass.class.getName()).log(Level.SEVERE, null, ex);
        }
    }
}