public class Main {
public static void main(String[] args) {
Romskip romskip = new Romskip();
Runnable leveringsskip = new Leveringsskip(romskip);
Runnable astronaut = new Astronaut(romskip);
Thread t1 = new Thread(leveringsskip);
Thread t2 = new Thread(astronaut);
t1.start();
t2.start();
}
}